Constellation guide

STAR DECK
GUIDE TO THE
CONSTELLATIONS
BY
MICHAEL K. SHEPARD, PH.D.

ii
TABLE OF CONTENTS
Introduction 1
Constellations by Season 3
Guide to the Constellations
Andromeda, Aquarius 4
Aquila, Aries, Auriga 5
Bootes, Camelopardus, Cancer 6
Canes Venatici, Canis Major, Canis Minor 7
Capricornus, Cassiopeia 8
Cepheus, Cetus, Coma Berenices 9
Corona Borealis, Corvus, Crater 10
Cygnus, Delphinus, Draco 11
Equuleus, Eridanus, Gemini 12
Hercules, Hydra, Lacerta 13
Leo, Leo Minor, Lepus, Libra, Lynx 14
Lyra, Monoceros 15
Ophiuchus, Orion 16
Pegasus, Perseus 17
Pisces, Sagitta, Sagittarius 18
Scorpius, Scutum, Serpens 19
Sextans, Taurus 20
Triangulum, Ursa Major, Ursa Minor 21
Virgo, Vulpecula 22
Additional References 23
Copyright 2002, Michael K. Shepard

1
GUIDE TO THE STAR DECK
Introduction
As an introduction to astronomy, you cannot go wrong by first learning the night
sky. You only need a dark night, your eyes, and a good guide. This set of cards is not
designed to replace an atlas, but to engage your interest and teach you the patterns, myths,
and relationships between constellations. They may be used as “field cards” that you take
outside with you, or they may be played in a variety of card games.
The cultural and historical story behind the constellations is a subject all its own,
and there are numerous books on the subject for the curious. These cards show 52 of the
modern 88 constellations as designated by the International Astronomical Union. Many of
them have remained unchanged since antiquity, while others have been added in the past
century or so. The majority of these constellations are Greek or Roman in origin and often
have one or more myths associated with them. Many of these myths are summarized in the
accompanying Constellation Guide.
I have often followed convention, or at least the majority, in the patterns I have
drawn for each constellation. In some cases, I have diverged from convention and drawn
the pattern that I myself see. I have attempted to limit each constellation to stars of 4th
magnitude or brighter, so that they are visible from most suburban viewing locations. In a
few rare cases, dimmer stars are required. In some instances, I have left out easily seen
stars because they do not contribute directly to the pattern, and may even detract from it.
Many people make the mistake of trying to “see” the shape of the constellation in
each pattern of stars. I say mistake, because often the pattern bears little resemblance to the
name. In my experience, it is better to develop some mnemonic between the pattern and the
name. In many cases, the name is appropriate for the mnemonic – Delphinus looks like a
dolphin. In others, one’s imagination must be employed a bit more rigorously. Under each
description, I have given the mnemonic that I use. You may find it helpful, or you may find
one better for you.
For users in the northern mid-latitudes (N. America, Europe, Asia), this 52 card
subset of this deck is sufficient to cover every constellation that can be easily seen, happily
corresponding to a standard 52 card deck for playing card games.
Features of the Cards
There are four card “suits” corresponding to the four seasons; green for northern
spring (Mar-May), yellow for northern summer (June-Aug), red for northern autumn (Sept-
Nov), and blue for northern winter (Dec-Feb). The season of each card indicates the best
time of year to see the associated constellation. Each season has three zodiac cards (12
total), corresponding to “face cards” in a standard playing deck. These are noted with the
word “Zodiac” under the constellation name.
If the constellation is circumpolar from mid-latitudes, a circular symbol is placed to
the right of the name; if it falls along the plane of the Milky Way (the galactic equator), a
pinwheel symbol is placed to the left of the name. In a few cases, both symbols are needed.
The meaning of the constellation is located along the bottom of the card. In some cases, a
constellation may have several meanings. For example, Bootes is sometimes referred to as
the “bear driver”, “herdsman”, “ox driver”, “ploughman”, or “hunter”! One of these is
chosen for the card, and the others are listed in the Constellation Guide.

2
In order to keep the star symbols simple, I have shown only four star magnitude
categories; brighter than 0.5, 0.5-1.5, 1.5-2.5, and dimmer than 2.5. As noted earlier, I have
tried to keep the limiting magnitude to 4, however in a few cases stars as dim as 5th
magnitude are shown (naked eye limitations are ~4-5 in suburban locations and ~6 under
dark skies). The key to the star magnitude is shown in the upper left or right corner.
Each constellation boundary as defined by the IAU is drawn using dashed lines.
Any star within these boundaries, whether illustrated on the cards or not, belongs to that
constellation. The adjacent constellations are listed outside of the boundary to help keep
the position of each constellation in perspective. In addition, a small square symbol is
shown in the bottom left or right of each card; this square represents one square degree of
the sky (roughly equivalent to placing four touching full moons in square shape) and is
used to give one a sense of scale. If the constellation is relatively small, it is enlarged to fill
the card space – so the square degree symbol is enlarged as well.
The brighter stars have been named and colored to show their approximate true
color. Finally, prominent galaxies, nebula, and star clusters are shown. Their common
name is given, or their designation in the Messier catalog of deep sky objects. For example,
the Great Nebula in the sword of Orion is Messier 42, abbreviated M42. Brief descriptions
of these objects are given in the Constellation Guide.
In the following descriptions, I have briefly summarized one or more of the myths
associated with the constellation, where appropriate. In some cases, there is no mythology
associated with the constellation. Roman and Greek names for the Olympians and Titans
are used interchangeably since the stories are often told in both forms. Table I lists the
Roman name and equivalent Greek name for each character discussed.
Table I
Roman and Greek gods
Roman Greek
Jupiter Zeus
Juno Hera
Mercury Hermes
Venus Aphrodite
Mars Ares
Saturn Chronos
Neptune Poseidon
Pluto Hades
Hercules Heracles
Ceres Demeter
Cupid Eros
Following each description, there is a summary of astronomical features. Finally,
there is a brief description of how to remember the constellation (or at least how I
remember it).

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CONSTELLATIONS BY SEASONS
Spring (Green)
1. Bootes
2. Cancer
3. Canes Venatici
4. Coma Berenices
5. Corvus
6. Crater
7. Hydra
8. Leo
9. Leo Minor
10. Sextans
11. Ursa Major
12. Ursa Minor
13. Virgo
Summer (Yellow)
1. Aquila
2. Corona Borealis
3. Cygnus
4. Draco
5. Hercules
6. Libra
7. Lyra
8. Ophiuchus
9. Sagitta
10. Sagittarius
11. Scorpius
12. Scutum
13. Serpens
Autumn (Red)
1. Andromeda
2. Aquarius
3. Capricornus
4. Cassiopeia
5. Cepheus
6. Cetus
7. Delphinus
8. Equuleus
9. Lacerta
10. Pegasus
11. Pisces
12. Triangulum
13. Vulpecula
Winter (Blue)
1. Aries
2. Auriga
3. Camelopardus
4. Canis Major
5. Canis Minor
6. Eridanus
7. Gemini
8. Lepus
9. Lynx
10. Monoceros
11. Orion
12. Perseus
13. Taurus

4
Andromeda – The Princess
Daughter of King Cepheus and Queen Cassiopeia of Ethiopia, the Princess Andromeda
became a pawn in Olympic chess. Cassiopeia was vain, and boasted that she was more beautiful
than the Nereids, sea nymphs that inhabited the oceans. Upon hearing the boast, the Nereids
complained to their father, Poseidon, Lord of the Seas. To punish Cassiopeia, Poseidon created
Cetus, a sea monster (also referred to as a whale) which ravaged the coastline of Ethiopia, killing
everyone and everything in its path. Upon consulting an oracle, King Cepheus learned that the
only way to appease Cetus would be to sacrifice of his daughter, Andromeda, to the monster. She
was chained to the coast to await her fate, when out the clouds swooped Perseus, mounted on the
winged horse Pegasus and carrying the head of Medusa, the snake-haired Gorgon. Anyone or
anything that looked directly at Medusa turned instantly to stone, which is the fate that befell
Cetus. Perseus then freed Andromeda and married her.
Within this constellation is the largest nearby galaxy, Andromeda galaxy. This is a large
spiral galaxy that is the twin of our own. Its fuzzy glow can easily be glimpsed under dark skies
with the unaided eye, but may prove difficult in the suburbs without binoculars. You will note
that Andromeda is adjacent to or nearby the key players in the legend above: Perseus, Pegasus,
Cepheus, Cassiopeia, and Cetus.
How to remember Andromeda: Two legs trailing off behind Pegasus as the unsuspecting
Andromeda is plucked from the shore.
Aquarius – The Water Bearer
Zodiac Sign
Water is necessary for life. In ancient times, when the constellations were originally
depicted and named, the wet season began about the same time that the sun entered this
constellation (in the Mediterranean, there are essentially two seasons: cool and wet, and hot and
dry). Thus, it was natural that this group of stars should somehow be connected with water. You
will find that Aquarius is surrounded by other water-related signs: Pisces the fish, Eridanus the
river, Cetus the sea monster, Capricorn the sea goat, Delphinus the dolphin, and Pisces Australis,
the southern fish. According to several authors, this entire region of the sky is referred to as “The
Sea”.
The Water Bearer is often depicted as a man pouring water from an urn. However, this
constellation is also sometimes referred to as the Cup Bearer, a person who waited upon
important people and brought them water. In the past, this sign has been associated with
Ganymede, a young mortal boy kidnapped by Jupiter to wait on him at Olympus. Aquila the
Eagle, Jupiter’s bird, performed the actual kidnapping.
How to remember Aquarius: The asterism of four stars near the top reminds one of the
water faucet handle on those old-fashioned bathtubs or sinks. The group of stars below makes a
fine bucket to pour in the water.

5
Aquila – The Eagle
Milky Way
This constellation was said to represent the Eagle of Jupiter, a regal symbol appropriate
for the king of the gods. He performed many unpleasant tasks for Jupiter, including the
kidnapping of Ganymede (see Aquarius), and the punishment of Prometheus for giving fire to
mankind.
The bright star in Aquila is Altair, and is one of the brightest stars in the sky. Together
with Deneb (Cygnus) and Vega (Lyra), it makes up the Summer Triangle. The Milky Way
travels in spectacular fashion through this constellation in the summer.
How to remember Aquila: Altair is bright like an eagle’s eye, and there are obvious
wings and the trunk and tail of the main body.
Aries – The Ram
Zodiac Sign
This is the first zodiac sign, and there are many stories of its origin. One story is that this
is the Ram with the Golden Fleece that Jason and the Argonauts were sent to recover. Another
story is that this represents the rams which Odysseus and his men hid under to escape from the
blinded Cyclops. This story has the additional appeal in that the Sun is in Aries at the beginning
of spring. The analogy is that Odysseus hid under a ram to escape from the dark cave of the
Cyclops into the bright outdoors, while in the Ram the sun returns from the dark of winter into
the light of spring.
Thousands of years ago, the sun entered Aries on the first day of spring, or the Spring
Equinox. In consequence, the Spring (or Vernal) Equinox is sometimes called the First Point of
Aries. However, the precession of the equinoxes (due to the slow wobble of the Earth’s spin
axis) has shifted the equinoxes so that it is now in the constellation Pisces. Many cultures
celebrated the Spring Equinox since it heralded the arrival of warmer weather and the growing
season. At least some aspects of our modern Easter derive from these celebrations.
How to remember Aries: A curved ram’s horn.
Auriga – The Charioteer
Milky Way
This constellation has also been referred to as the Ploughman. The bright star Capella
represents a she-goat. One responsibility of ploughman and charioteers was the care of livestock,
and Capella represents this. In some stories, Capella represents the she-goat that nursed or
provided milk for the infant Jupiter when he was being hidden from the wrath of his father
Saturn.
The corner star in this constellation is also one of the horns of Taurus, the Bull. The
Milky Way goes through Auriga, and there are several star clusters in the center that can just be
glimpsed by eye in dark skies and are easily seen in binoculars.
How to remember Auriga: I see a pentagon, and remember it is Auriga.

6
Boötes – The Bear Driver
This constellation has also been referred to as the Ox Driver, the Ploughman, the Hunter,
and the Herdsman! There are interesting stories behind each name. However, I have chosen to
refer to it as the Bear Driver, a man who, with his two hunting dogs (Canes Venatici), drives the
two bears (Ursa Major and Minor) around the pole.
The star Arcturus is one of the brighter stars in the sky.
How to remember Bootes: Most depictions of Bootes show him wielding a club of some
kind. I see the entire constellation as one gigantic club. However, one should think twice before
going after a bear with a club and two dogs.
Camelopardus – The Giraffe
Circumpolar
The name is said to derive from “camel-leopard” or spotted camel, which is what one
might call a giraffe if confronted with it for the first time. All of the stars in this constellation are
faint and require dark skies to see.
How to remember Camelopardus: I have a tough time with this faint constellation. One
can, with some imagination, see the a giraffe in profile, with two long, skinny legs, and a long
neck.
Cancer – The Crab
Zodiac
The classical story is that the crab was sent by Juno (Hera) to distract Hercules while he
was trying to kill the Hydra, one of his twelve labors. You’ve got to wonder what she was
thinking – Hercules simply smashed it with his foot, and went on to kill the Hydra. This is the
faintest constellation in the zodiac, but it does contain the Praesepe, or Beehive. This star cluster
can just be seen as a fuzzy patch with the naked eye, and is spectacular in binoculars and small
telescopes.
In ancient times, the sun was in the constellation Cancer on the Summer Solstice (first
day of summer, around June 21st
.). This coincides with the sun being at its highest point in the
sky all year (for the northern hemisphere, lowest point for those in the southern hemisphere).
Many cultures celebrate some form of summer festival commemorating this day. If you look on a
globe, you find the Tropic of Cancer to be a circle above the equator at a latitude of 23.5° North.
Everywhere on this line, the sun is directly overhead at noon on the Summer Solstice. Because of
the precession of the Equinoxes, however, the sun is now in the constellation Taurus on the
Summer Solstice. (Should we change this circle name to the Tropic of Taurus?)
How to remember Cancer: The Praesepe is relatively easy to see in moderately dark
skies and appears brighter to me than the rest of the constellation. In my view, the Praesepe is the
head with two beady eyes projecting from it, and claws or legs on either side of these. My crab
has only a single leg.

7
Canes Venatici – The Hunting Dogs
This rather unremarkable constellation represents the two hunting dogs of Boötes, the
Bear Driver. The brightest star in this constellation is named “Cor Caroli”, or the “Heart of
Charles II”, and is a colorful (orange and blue) double star in small telescopes.
How to remember Canes Venatici: Two stars, two dogs.
Canis Major – the Big Dog
This constellation represents the larger of two hunting dogs belonging to Orion, and can
be seen to be sitting at his master’s feet, or in hot pursuit of Lepus, the Hare.
Sirius, also known as the “Dog Star”, is the brightest star in this constellation and, in fact,
is the brightest star in the sky. Sirius was of great importance to ancient Egypt. In the early days
of Egypt (~3000 B.C.E.), it was observed to rise just before the sun (heliacal rising) on the
summer solstice (see Cancer). Thus it marked the new year for the Egyptians, and coincidentally
signaled the beginning of the Nile’s annual flooding. Nowadays, the heliacal rising occurs later
in the summer (mid-August) when the weather can be overbearingly hot and uncomfortable. As a
result, we refer to these as “Dog Days”.
Sirius is also of interest because it has a companion star which is a white dwarf. These
stars are incredibly dense; a teaspoon of them would weigh tons.
How to remember Canis Major: Sirius is the gleam in the dog’s eye, and it sits at its
master’s feet.
Canis Minor – the Little Dog
This constellation represents the smaller of Orion’s hunting dogs. There is little to note
about it except the bright star Procyon. Interestingly, Procyon, like Sirius, has a white dwarf
companion.
How to remember Canis Minor: It rises a bit earlier than Canis Major. A playful young
dog (with another bright eye) that is always up before its elder.

8
Capricornus – the Sea Goat
Zodiac
This constellation represents a frightening episode in the history of the Olympian gods.
The Titans were the predecessors of the Olympians, but were put down in a fierce battle by
Jupiter (Zeus) and company. In one of several attempts at revolt, a powerful and demonic
monster, Typhon, was created by Earth and sent against the gods. It came upon them swiftly and
without warning. In their fear, they changed into animal shapes to escape. Jupiter took the form
of a Ram (another story for Aries). The satyr (goat-man) Pan was drinking at the shore when
Typhon appeared. He literally “pan-icked” and tried to escape using the form of a fish. In his
rush though, he only got it half-right and ended up with the upper body of a goat and lower body
of a fish.
In ancient times, the sun was in the constellation Capricornus on the Winter Solstice (first
day of winter, around Dec 21st
.). This coincides with the sun being at its lowest point in the sky
all year (for the northern hemisphere, highest point for those in the southern hemisphere).
Festivals commemorating the event were common in all cultures since from this point on, the sun
would rise a little higher in the sky every day. If you look on a globe, you find the Tropic of
Capricorn to be a circle below the equator at latitude 23.5° south. Everywhere on this line, the
sun is directly overhead at noon on the Winter Solstice. Because of the procession of the
Equinoxes, the sun is now in the constellation Sagittarius on the Winter Solstice.
How to remember Capricornus: It looks like a toy boat, but it’s really a sea goat.
Cassiopeia – the Queen
Circumpolar, Milky Way
The constellation represents the Queen sitting on her throne. The story of Cassiopeia is
really the story of her daughter, Andromeda, which was set in motion by the vanity of
Cassiopeia. As punishment for her bragging, it was said the sea nymphs had Cassiopeia placed in
the heavens destined to go around and around the pole. Half of the time she was upright, the
other half she was tipped over in a very un-regal fashion.
The Milky way is not particularly evident during the Northern Winter months. However,
one exception to this is the region around Cassiopeia where it is splendid.
How to remember Cassiopeia: Some see a throne. I see a giant M when above the pole,
or W when below. Since the M is more often and easily seen, think of it as the first letter of
Cassiopeia’s motto: ME, ME, ME!

9
Cepheus – the King
Circumpolar
The story of Cepheus is, like that of Cassiopeia, the story of his daughter Andromeda.
Cepheus is the one who consults the oracle to find out why the sea monster (Cetus) is tearing up
his country and killing his subjects. And, it’s Cepheus who ultimately makes the decision to
sacrifice his daughter for the sake of his kingdom. I say Cassiopeia would have been a more
appropriate choice. Luckily, Perseus got him off the hook.
How to remember Cepheus: A great and empty house turned upside down represents the
palace (and life) of this unfortunate king.
Cetus – the Sea Monster (or Whale)
This constellation is quite spread out, and none of the stars are particularly bright. As told
in the story of Andromeda, this represents the monster sent to punish the Ethiopians for the
boasting of their Queen Cassiopeia. Various stories have various monsters, but at least some of
the myth may have originated from early glimpses of or stories about whales. It is no
coincidence that the order of mammals to which whales belong is the “cetaceans”. Note that this
constellation is in the middle of the larger region sometimes referred to as the “Sea” (see
Aquarius).
Cetus is home to one of the more famous variable stars, Mira, which means “wonderful”.
Mira has a long period of approximately 330 days. For five months or so, it is so dim it cannot be
seen without a telescope. Then it slowly increases in brightness until it is second magnitude –
about as bright or brighter than any star in this constellation. After about two weeks at its peak, it
slowly fades to invisibility before repeating the cycle.
How to remember Cetus: I see the head and body of some type of monster.
Coma Berenices – the Hair of Berenice
A king of Egypt, Ptolemy 2nd
, went to battle against the Assyrians. His wife and Queen,
Berenice, offered her hair as a sacrifice to Venus (Aphrodite) if she would bring him safely
home. He came home safely and she did as promised. However, the locks were stolen from the
altar and the king became incensed. Thinking quickly, the court astronomer (who may have been
the culprit) told the king and queen that Venus herself had placed the shorn hair in the heavens,
and pointed out the region of the sky known now as Coma Berenices. The constellation itself is
not much to brag about, but under dark skies, the area literally sparkles with closely spaced stars.
From an astronomical standpoint, this constellation is home to many star clusters,
galaxies, and nebulae. Perhaps more interesting, the North Pole of the Milky Way Galaxy (or
North Galactic Pole) can be found in this constellation.
How to remember Coma Berenices: The group of three stars isn’t much, but under dark
skies, it is not difficult to imagine that this area contains the highlights of dark and lustrous hair.

10
Corona Borealis – the Northern Crown
This constellation is also referred to as Ariadne’s Crown. Ariadne was the mortal
daughter of King Minos of Crete and was said to be very beautiful. She fell in love with and
married Theseus, a Greek hero, after he slew the Minotaur on the island of Crete. However, she
also caught the eye of the god Bacchus (god of wine and revelry) who, some say, ordered
Theseus to abandon her. Whatever the reason, Theseus did abandon Ariadne and she became the
Bride of Bacchus, and an immortal. The crown in the sky signifies her betrothal and marriage to
the god.
How to remember Corona Borealis: It appears to be a tiara, with the brightest star in the
fore.
Corvus – the Crow
The Crow (also called the Raven in earlier references) was the bird of Apollo. One story
has that Apollo changed into a crow to escape the Typhon. Another says that the crow was
originally a different color (some say snow white, others silver) and had a beautiful voice. He
was once sent on an errand by Apollo to fetch a cup of water (Crater). Along the way, the crow
was distracted by food and returned much later than he should have. As punishment, Apollo
turned him black and gave him the terrible voice we know the crow by today. In addition, he set
both the crow and cup near the Hydra with the order that the Hydra prevent Corvus from
drinking (from the cup) forever. Finally, a third story says Apollo turned the crow black for
being the bearer of bad news – in this case, it was the impending marriage of the woman Coronis
to another man. Coronis was carrying Apollo’s child at the time (see Ophiuchus).
How to remember Corvus: A trapezium of stars with a short “tail”, it sits adjacent to
Crater, and on the back of the Hydra.
Crater – the Cup
One story has this constellation to be the cup for which Apollo sent his crow (see
Corvus). Other stories present it as the cup (or goblet) of Bacchus, Achilles, Hercules, among
others! Another interesting story, attributed to the Hebrews, is that it represents the story of the
stolen (planted) cup found in the grain sack of Benjamin in the story of Joseph. Yet another
story, attributed to early Christians, is that represents the cup of Christ, or Holy Grail.
How to remember Crater: Another trapezium of stars, it sits next to Corvus and on the
back of the Hydra. In darker skies, a grouping of faint stars in the shape of a bowl can be seen
connected to the trapezium, making it appear more like a goblet.

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Cygnus – the Swan
Milky Way
This group of stars has been called one type of bird or another by many cultures, although
it is also commonly referred to as the Northern Cross. There are two major myths associated with
the swan designation. One myth is that Jupiter changed himself into a swan (the bird of Venus,
goddess of love) in order to first attract Leda, the mother of Pollux and Helen of Troy by Jupiter.
A second story is that this represents the devotion of Cycnus (later changed to Cygnus) to his
friend Phaethon. Phaethon was the son of Helios, the sun god (also Apollo in some stories). One
day he drove the chariot of the sun across the sky, but lost control, was killed by Jupiter, and
landed in the river Eridanus. Cycnus dove over and over into the river until he recovered the
body of his friend. For his faithfulness, he was transformed into a swan (with a slight name
change) and placed in the sky.
Cygnus lies along a beautiful stretch of the Milky Way. The brightest star, Deneb, is one
of three stars (along with Altair and Vega) that make up the Summer Triangle. Its name means
“tail of the hen” and not surprisingly forms the tail of the swan. The head of the swan is Albireo
and is noteworthy as perhaps the most beautiful double star in the sky. One only needs
binoculars or a small telescope to observe the beautiful golden yellow and azure blue pair.
How to remember Cygnus: It is easy to see a large cross or a swan flying along the
course of the Milky Way.
Delphinus – the Dolphin
This is a beautiful constellation, simple and compact. It represents a dolphin that
Poseidon employed to help win the amours of Amphitrite, daughter of Oceanus. The dolphin was
successful, Amphitrite became the wife of Poseidon, and the dolphin was rewarded by being
placed forever in the skies. Note that this constellation is on the boundary of the region referred
to earlier (see Aquarius) as the “Sea”.
How to remember Delphinus: The perfect diamond shaped group of stars is the body, and
the trailing star is the tail of a dolphin leaping out of the sea.
Draco – the Dragon
Circumpolar
This constellation wraps nearly the entire way around the northern celestial pole. One
story says that the dragon was one of the monsters fighting with the Titans against the Olympians
for ultimate control of the world (see Capricornus). Some even associate it with Typhon. In any
event, it engaged Minerva (Athena) and she hurled it into the sky where it became hopelessly
twisted and snared.
From an astronomical perspective, Draco is interesting because its brightest star (Thuban)
was the pole star some 5000 years ago when the Egyptians were building the pyramids. Because
of the precession of the Equinoxes (see Aries), it has slowly drifted away from the pole and
Polaris, our current North Star, resides there.
How to remember Draco: A tortuous winding of stars around the pole, none of which are
particularly bright.

12
Equuleus – the Foal
This constellation represents a young horse, or foal. Some say it’s the offspring of
Pegasus; otherwise, its origin is somewhat obscure.
How to remember Equuleus: One can imagine the shape indicated to be the head and
neck of a small horse.
Eridanus – the River
The longest constellation in the sky, Eridanus starts near the foot of Orion and sinuously
continues south until it stops near the southern pole. Only the northern part of this constellation
is and was visible to Europeans and N. Americans, while it is and was fully visible to those
living near the equator or “down under”. Most cultures associate it with their major river, the
Nile and Euphrates being two of the more well-known. In mythology, this is the river into which
Phaethon (see Cygnus) fell after an unsuccessful attempt to drive the sun across the sky.
In another story, Hercules is given the unpleasant task of cleaning out the stables of
Augeas in a single day. The stables held thousands of cattle and hadn’t been cleaned in years. To
accomplish his task, he diverts two rivers into the stables to wash them clean, and then restores
them to their normal course.
Achernar, ninth brightest star in the sky, means “end of the river”, and it is not visible
from the mid-latitudes of the north.
How to remember Eridanus: Long and sinuous, it starts near Rigel (Orion) and heads
south.
Gemini – the Twins
This constellation represents two fraternal twin brothers born of the same mother, Leda,
but different fathers! The father of Castor was the mortal King of Sparta, while the father of
Pollux was Jupiter (Zeus). They were considered warlike heroes and were members of the crew
of the Argonaut on the quest for the Golden Fleece, among other adventures. Castor was killed in
a dispute, and Pollux, who was immortal, was so disconsolate that he begged Jupiter to kill him
as well. Immortals can’t be killed, but Jupiter had pity and placed both of them in the sky
together.
How to remember Gemini: Castor and Pollux are similar in brightness, and form the
heads of two lines representing two figures. These two stars are joined in the constellation to
represent their inseparability.

13
Hercules – the Strong Man
Hercules was the immortal son of Jupiter (Zeus) and a mortal mother, Alcmene. Hercules
personality could be summarized as good to the core but unusually rash. Even as a baby,
Hercules displayed incredible strength and courage. It is said that, still in his crib, he wrung the
neck of a serpent sent by Juno (Hera) to kill him. His feats are too numerous to even summarize
here, except to mention that the better known stories about him involve his Twelve Labors which
were performed as a penance. Many of these Labors involve or overlap the stories of other
constellations including the Hydra, Eridanus, Cancer, and Leo, and are mentioned under those
constellations.
How to remember Hercules: A large standing man with two upraised arms (probably in
battle) but with no head to speak of.
Hydra – the Sea Serpent
This is one of the foes that Hercules had to overcome in his Twelve Labors. The Hydra
was said to have nine heads, one of which was immortal. If you cut off any head, two were said
to grow in its place. Hercules finally overcame the Hydra by burning the neck stump after cutting
off a head, thereby cauterizing it and preventing new heads from growing. The immortal head
was disposed of by burying it under a huge rock, effectively removing it as a threat.
The Hydra is a huge constellation, stretching over a significant fraction of celestial real
estate. Unfortunately, it is also rather unremarkable and contains only one brighter star. Although
the story gives it nine-heads, there is no equivalent in the shape of the constellation.
How to remember Hydra: It’s long – like a giant snake should be. The head is a
relatively easy asterism to pick out, just below Cancer and Leo. Interestingly, it is NOT located
in the “Sea”, or even next to Hercules.
Lacerta – the Lizard
Milky Way
This rather faint and inconspicuous constellation was formed from “left-over” stars
between Pegasus and Cygnus in the 17th
century. There is little or no mythological background
for the constellation, and equally little to say about it from a naked-eye astronomical perspective.
How to remember Lacerta: The zig-zag nature of stars in this constellation reminds me
of the way in which the lizards (or newts) of my youth were capable of running, just staying out
of hands reach.

14
Leo – the Lion
Zodiac
The first of Hercules’ Twelve Labors was to rid the earth of the Nemean Lion, a beast
that no weapon could harm. Hercules strangled it, and wore its skin as a trophy. The brightest
star, Regulus, is one of the brighter in the sky and is sometimes referred to as “Cor Leonis”, the
Heart of the Lion.
How to remember Leo: The backward question mark is easily seen and forms the head
and mane of the lion. The stars behind it form the body and haunches of a reclined, but alert lion.
Leo Minor – the Lion Cub
This is another constellation, like Lacerta, created from “left-over” stars with no classical
mythology.
How to remember Leo Minor: An inconspicuous grouping sitting near (actually above)
the parent Leo.
Lepus – the Hare
There is little classical mythology associated with this constellation except as a potential
hunting target for Orion and Canis Major.
How to remember Lepus: I see a rather cartoonish looking rabbit head, with two long and
floppy ears.
Libra – the Scales
Zodiac
The only non-animal in the zodiac, the stars in Libra used to be part of Scorpius. In fact,
the Arabic names of the two brighter stars in this constellation actually mean the northern and
southern claw. Sometime later, this grouping of stars was recognized as a separate constellation.
The scales are said to represent the equal length of days and nights around the equinoxes. At
least one writer has noted that some 4000 years ago the Autumnal equinox was in this
constellation, one of two dates when days and nights are equal lengths.
How to remember Libra: I don’t see scales, but a kite with a long tail.
Lynx – the Wildcat
This is a very inconspicuous grouping of stars – only one brighter than 4th
magnitude.
One story says this is the remains of a certain King Lyncus who angered the goddess Ceres. She
turned him into a lynx and made him difficult to see. Others say that at least part of the reason
for the name of this grouping is that one needs the eyes of a lynx to see them.
How to remember Lynx: A long chain of fainter stars, it is adjacent to the other “cats” in
the sky, Leo and Leo Minor.

15
Lyra – the Harp
The best known myth about this constellation is that of Orpheus. He was said to be an
extremely gifted player of the harp, better than even his father Apollo, and capable of rendering
docile the most savage beast. He was a member of the crew of the Argonaut, and once saved
them from the intoxicating sounds of the Sirens by playing his lyre. His wife, Eurydice, was
killed by a snake on their wedding day, and Orpheus went to Hades (the Underworld) and asked
Pluto to release her back to the living. Pluto was persuaded by the magical music Orpheus
played, and agreed to let her go back under the condition that neither looked back before
reaching the surface. Unfortunately, Orpheus himself looked back and lost Eurydice forever. He
was so melancholy that he roamed the world playing sad but beautiful music. It is said he was
killed by a group of women who fell in madly love with him (and his music) but were enraged
when he rebuffed them.
The brightest star, Vega, is a jewel in the summer sky and passes directly overhead at
northern mid-latitudes. It, along with Deneb and Altair, form the Summer Triangle.
How to remember Lyra: Four fainter stars form a parallelogram which is the body of the
lyre. Vega and another star sit above the parallelogram and form the head of the lyre.
Monoceros – the Unicorn
Milky Way
The unicorn is a horse-like creature with a single horn on its head, said to possess
magical properties. Some believe the mythology of unicorns to have originated with early
sightings of rhinoceros. However, there is no classical mythology associated with this
constellation. None of the stars are particularly bright, nor is the Milky Way readily evident.
How to remember Monoceros: This is a tough constellation for me, even with Orion as a
guide. All of the stars are difficult to see. When I can glimpse them, however, I see a profile of
the unicorn with front and rear legs visible, and a neck and head with a small “horn” projecting
from the head. One can also think of it as sneaking up on Orion, something only the most
stealthy or magical beasts could accomplish.

16
Ophiuchus – the Healer
The name of this constellation literally means “serpent holder” and it is almost always
associated with the constellation Serpens, the Serpent. In antiquity, it is thought that this
constellation represented the snake charmer who was also capable of healing snake bites. In
latter days, this constellation came to be associated in all but name with Aesculapius (or
Ascleios), the son of Apollo. He was borne of a mortal mother Coronis, but she angered Apollo
by marrying another mortal just prior giving birth (see Corvus). In his anger, Apollo killed
Coronis (and her new husband), only saving the newborn Aesculapius. Some say Apollo himself
taught the boy, others say he was put in the care of Chiron the Centaur; in any event he was
taught the healing arts. He was said to have learned the secret of raising the dead by careful
observation of serpents – thus the snake handler. (Snakes are often found in mythology as
symbols of death and rebirth because they shed their skins every year). His efforts to raise the
dead, including Orion the Hunter, angered the gods. Pluto, king of the underworld, was
especially upset since resurrection was a direct threat to his kingdom. He asked Jupiter for help,
and Jupiter killed Aesculapius with a thunderbolt (some say Aquila the Eagle carried it) and
placed him in the sky.
Ophiuchus is not the brightest of constellations, but it is rather easily seen. Interestingly,
it falls along the ecliptic (next to Scorpius) but has never been part of the zodiac.
How to remember Ophiuchus: I see the large torso of a man standing on Scorpius. This
position is symbolic of his power to overcome the poison of the Scorpion when raising Orion
from the dead.
Orion – the Hunter
Milky Way
Orion was said to have been the son of Jupiter and a nymph. A huge and powerful hunter,
he once boasted that he would kill every beast on the Earth. Gaia, the Earth goddess, overheard
the boast and sent Scorpius, the Scorpion, to sting and kill Orion. Later, Aesculapius (see
Ophiuchus) resurrected him.
Orion is one of the most recognizable constellations and dominates the winter evening
sky. Two of its stars are especially bright. Betelgeuse is in the top left corner, or shoulder, and is
a deep orange supergiant star. (Betelgeuse is pronounced a myriad of ways, none of which sound
particularly appealing. This is fitting, since the name literally means “armpit of the giant”). Rigel
is in the lower right corner and is a hot, blue giant. Below the belt of Orion is a grouping of stars
known as the Sword of Orion. The central star has a fuzzy appearance to the naked-eye, but is
resolved to be a spectacular gas nebula in small telescopes.
How to remember Orion: If you recognize no other constellation in the winter, you will
recognize Orion. It dominates the sky. In keeping with the hunting theme, Orion is surrounded
by two hunting dogs, Canis Major and Minor, a unicorn, Monoceros, and a hare, Lepus. He is
also on the edge of, or just in, the river Eridanus.

17
Pegasus – the Winged Horse
When Perseus slew the Gorgon Medusa, some of the Gorgon’s blood dripped into the sea
and formed the winged horse, Pegasus. In classical mythology, this is the end of Perseus’
involvement with Pegasus. However, later writers include Pegasus in the story of Perseus,
especially in the rescue of Andromeda from the sea monster, Cetus. I prefer the latter stories. In
classical mythology and later, Pegasus is most associated with Bellapheron, who like Hercules,
was given nearly impossible tasks as penance for earlier wrong doing. He was only able to
complete them because Pegasus was sent by Minerva (Athena) to help him. However,
Bellapheron is not given a constellation (although some associate him with Auriga).
How to remember Pegasus: Pegasus is a huge constellation and its most prominent
feature is the “square” of stars that make up the body of the horse – often referred to as the “great
square of Pegasus”. The common view of this constellation is the torso and front half of a great
horse, flying upside down. The two front legs are visible, as are the neck and head of the horse.
Andromeda is attached to the back corner of the torso, legs flying off behind the steed as she
hangs on for dear life.
Perseus – the Hero
Milky Way
Perseus was the grandson of King Acrisius of Argos and son of Jupiter (Zeus), but didn’t
know it. His mother, Danae, had been banished by the king because a prophet had told him his
grandson would one day kill him. Fortunately, both Danae and Perseus were taken in by a kind
fisherman named Dictys. The brother of Dictys, named Polydectes, was the ruler of the island
where they lived and a very unsavory sort. Polydectes was attracted to Danae and became
engaged to her. Perseus was poor and embarrassed because he had nothing to give Polydectes
and his mother as a wedding gift. Polydectes, not really wanting Perseus around, tricked the
young man into offering the head of the Gorgon, Medusa as a gift. There were three Gorgons,
each with wings and hair of snakes. It was said that whoever looked that them directly was
turned to stone. Fortunately for Perseus, he was aided by two gods, Athena (Minerva) and
Hermes (Mercury); otherwise, he was surely doomed. Athena loaned him her shield (which she
had on loan from Zeus), and Hermes loaned him a sword; they also arranged for three other gifts
– winged sandals, a pouch that would hold anything no matter its size, and a helmet that rendered
the wearer invisible. In some versions, Perseus is also given, or loaned, the services of Pegasus,
the flying horse. After several intermediate adventures, Perseus locates the Gorgons. Using the
shield of Athena as a mirror to look at the Gorgons indirectly, he kills Medusa as they sleep. On
the way back, he runs across Andromeda, chained to the Ethiopian coastline as a sacrifice to
Cetus. Some accounts say he slays Cetus with the sword of Hermes, others say he turns it to
stone by showing it the head of Medusa. Whatever the means, the outcome is the same –
Andromeda is saved, Perseus marries her, and they live happily ever after. Except that this is
Greek mythology we’re talking about, and they don’t really live happily ever after, but that’s
another story.
Perseus is a rich constellation and contains numerous star clusters visible in small
telescopes. The famed “Double Cluster” of Perseus is faintly visible to the unaided eye in darker
skies. In addition, this constellation contains the variable star “Algol” which means “demon-
star”. Appropriately, this star represents the head of Medusa.
How to remember Perseus: I see a distorted Greek letter π, for Perseus.

18
Pisces – the Fish
Zodiac
When the demon-monster Typhon was unleashed in the battle between the Titans and
Olympians, the Olympians changed into different creatures to escape (see Capricornus). Venus
and her son Cupid both changed into fish to escape, and to keep from losing one another in the
water, tied themselves together with a cord.
Pisces is quite extended and generally faint. It lies in the celestial “Sea” adjacent to the
Water Bearer (Aquarius) and the sea monster (Cetus). The First Point of Aries, or Vernal
Equinox, used to lie in Aries. It now lies in Pisces.
How to remember Pisces: If one has darker skies, this constellation has two polygonal
shaped asterisms – “fish” – at the ends of the cord. However, in most skies, I see little more than
the cord and one fish at the southern end.
Sagitta – the Arrow
Milky Way
In one of his many exploits, Hercules is said to have helped free Prometheus from
punishment. Prometheus was the Titan responsible for giving fire to humans. The other gods,
especially Jupiter, were angry with him for this and other deeds, and sentenced him to be chained
to the Caucasus Mountains. There he could not rest and was tortured daily by the eagle, Aquila.
Hercules shot and killed the eagle with an arrow. Another story says that this is the arrow of
Cupid.
Sagitta is a small constellation, but easily picked out among the stars of the Milky Way.
How to remember Sagitta: It looks like a small arrow or dart and is above Aquila and
adjacent to Hercules.
Sagittarius – the Archer
Zodiac, Milky Way
This constellation is a warlike archer, oftentimes depicted as a centaur (half-man/half-
horse). It is also referred to in some literature as the centaur; this is unfortunate, however,
because there is another constellation called Centaur (which represents Chiron) visible in the
southern hemisphere.
Astronomically, this region is rich with dark and bright nebulae and star clusters. In fact,
the center of the Milky Way lies in this direction.
How to remember Sagittarius: Ever since the “teapot” was pointed out to me, that’s all
I’ve ever seen.

19
Scorpius – the Scorpion
Zodiac, Milky Way
The scorpion was sent by Gaia, the Earth Goddess, to kill Orion, a great hunter (see
Orion) who once threatened to hunt the Earth to extinction. The scorpion succeeded. However,
Aesculapius (see Ophiuchus) brought Orion back from the dead using medicinal herbs.
Antares, a bright red star in the head of the scorpion, is a red supergiant and several
hundred times the size of our own sun. Its name literally means “Rival of Mars” (Ares is the
Greek name for Mars). This part of the sky also contains a rich portion of the Milky Way with
numerous star clusters visible to small telescopes.
Also of interest are two fairly bright stars just west of the head of the scorpion in the
constellation Libra. These stars are named “Zubenelgenubi” and “Zubeneschamali” (quite a
mouthful) which literally mean the “northern claw” and “southern claw”, referring to the time
when they both were once part of the constellation Scorpius.
How to remember Scorpius: In the northern midlatitudes, this constellation is on or near
the southern horizon. However, it is a jewel and you will have no difficulties seeing the shape of
the scorpion, from the lovely Antares in the head, to the tip of the stinger at the tail.
Scutum – the Shield
Milky Way
This obscure constellation has no mythological history. Instead, it is a memorial to John
Sobieski, a 17th
century Polish king, placed in the sky by the astronomer Hevelius. The shield
symbolizes the king’s coat-of-arms.
Although the constellation itself is not particularly noteworthy, this portion of the sky is
rich with the Milky Way.
How to remember Scutum: I see a thin, elongate shield.
Serpens – the Serpent
This constellation is closely linked to Ophiuchus, the Healer. To ancient cultures, the
serpent represented immortality since it is observed to be “reborn” every year with the shedding
of old skin. It was often associated with the healing arts, and even today the symbol of modern
medicine consists of a single serpent wrapped around the Staff of Aesculapius.
Another symbol, the Caduceus, consisting of two snakes intertwined about the Wand of
Hermes, is also occasionally used to represent the healing arts, but is more appropriate as a
symbol for commerce since Hermes (Mercury) was the patron of commerce (and, unfortunately,
thieves).
Serpens is a split constellation, one portion each to the west and east of Ophiuchus.
Serpens Caput is the western portion and translates as “Head of the Serpent”. Serpens Cauda, the
eastern portion, means “Tail of the Serpent”. The body of the serpent is incorporated into the
stars of Ophiuchus.
How to remember Serpens: It is wrapped around Ophiuchus, head to the west, tail to the
east.

20
Sextans – the Sextant
The astronomer Hevelius, responsible for many of our modern constellations, is also
responsible for this one, which commemorates an exquisite sextant he used for his work but lost
in a fire. It is a very dim constellation, the brightest star just brighter than the 5th
magnitude.
How to remember Sextans: A dim triangle with which to measure the heavens.
Taurus – the Bull
Zodiac
This constellation is a bull (or related animal) to a great many cultures, and traces its
origins into deep antiquity. Interestingly, some 6000 years ago, the Vernal (or Spring) Equinox
was in Taurus and many ancient cultures began their new year with this sign. Today the
procession of the Equinoxes (see Aries) has moved the Vernal Equinox into Pisces and the
Summer Solstice into Taurus.
In classical mythology, this constellation is most associated with Jupiter (Zeus) and
Europa. Europa was a beautiful mortal maiden, and Jupiter was smitten with her. He changed
himself into a great white bull and enchanted Europa. She moved close and found the bull so
docile that she climbed onto its back. At once Jupiter took off, and she became the mother, by
Jupiter, of King Minos of Crete.
Astronomically, there are several interesting objects in this constellation. Aldebaran, the
brightest star, is of reddish hue and makes one eye of the bull. It is internal to, though not related
to the Hyades, a loose cluster of five or six stars said to be seven (!?) daughters of Atlas. They
are said to have raised Bacchus, the god of wine and merrymaking, who is also associated with
the bull. The Hyades are also associated with rain and storms, although the reasons for this
association are obscure.
The Pleiades, or Seven Sisters, are also daughters of Atlas and half-sisters of the Hyades.
There are more than seven stars in this beautiful cluster, but only six are easily seen. An entire
volume of history could be written about the Pleiades; they have been observed and revered by
every civilization for which records remain. Among my favorite anecdotes is that the midnight
culmination (reaching its highest point) of the Pleiades marked the beginning of the new year for
several ancient societies. Today, that event falls around mid-November. In the ancient past,
however, it was earlier in the autumn and would have been associated with the Celtic festival of
Samhaim, the precursor of our modern Halloween.
How to remember Taurus: The V-shaped is easily imagined to be the head of a great bull
with long and pointy horns. The Hyades fall around the face of the bull and surround its red-eye,
Aldebaran. The Pleiades rise just before the head of the bull and appear to be a miniature dipper
– in fact, many people refer to them as “the little dipper”, not to be confused with the little dipper
of Ursa Minor.

21
Triangulum – the Triangle
A minor but very old constellation. There is no specific mythology associated with it, but
it has represented at various times and to various peoples the Greek letter Delta, the
mathematical accomplishments of the Greeks, the delta of the Nile river, the island of Sicily, and
the Trinity of the Christian church.
How to remember Triangulum: The name says it all.
Ursa Major – the Great Bear
Circumpolar
This is one of the oldest constellations in the sky, at least in its more familiar guise of the
“Big Dipper”. The classical story of this constellation is that it represents another of Jupiter’s
amorous conquests, or more truthfully one of his many amorous disgraces. Callisto was the
daughter of the King of Arcadia, a beautiful maiden who joined company with Diana, the virgin
goddess of the Moon and the Hunt. One day in the forests of Arcadia, she was spied by Jupiter.
He changed into human form and took advantage of the girl. Nine months later, a son, Arcas,
was borne to Callisto. Hera, Jupiter’s wife, eventually found out, of course, and was livid. She
couldn’t punish Jupiter so, as usual, she took her anger out on the poor maiden and turned her
into a bear. When her son Arcas was grown, he came upon his mother while hunting. Not
knowing it was her, he was about to attack when Jupiter, having pity, turned him into a smaller
bear and placed them both in the sky. Some versions of the story turn Arcas into Boötes, the bear
driver.
One can always find Polaris, the North Star, by sighting along the two stars of the edge of
the dipper.
How to remember Ursa Major: I always look for the Big Dipper and fill in the remainder
of this large constellation: a snout, legs, and claws.
Ursa Minor – the Small Bear
Circumpolar
Analogous with Ursa Major, this constellation is more commonly known as “The Little
Dipper”. The mythological origin of this constellation is related to Ursa Major; it represents the
Arcas, son of Callisto. Several of the stars in the dipper are quite faint and require rather dark
skies to be seen.
Astronomically, Ursa Minor’s main claim to fame is Polaris, the North Star. Polaris lies
less than a degree from true celestial north, and has been used for centuries as a guiding beacon.
However, it was not always so. The slow wobble of the Earth known as precession slowly moves
the celestial pole in a giant circle, once every 26,000 years. Some 5000 years ago when the
Egyptians were building the pyramids at Giza, the star Thuban, in Draco, was the North Star. In
some 12,000 years, Vega, in Lyra, will be close to celestial North.
How to remember Ursa Minor: Unlike Ursa Major, the only stars of significant
brightness in this constellation form the Little Dipper. Polaris is the tail of the bear, or endpoint
on the handle of the dipper.

22
Virgo – the Maiden
Zodiac
Although a literal translation of Virgo is “The Virgin”, this term in Latin only means
young girl or maiden. The rest of the meaning is inferred. Virgo was a goddess that represented
grain and the harvest – literally “food”, a very important concept when a poor harvest meant
famine, starvation, and death. In many cases, the constellation was identified with the goddess
Ceres, goddess of the hearth and home; in other cases, she was identified with Persephone, the
daughter of Ceres and Queen of the Underworld. In other cultures, she was associated with
Ishtar, Astarte, (both cultural ancestors of Aphrodite or Venus) and the Saxon goddess of spring
Eostre. This last name is interesting because our festival of Easter may have originally derived
from it, and Virgo is seen during spring evenings. Perhaps not surprisingly, the Autumn Equinox
falls in Virgo, a traditional time for celebrating the harvest. The star Spica, one of the brightest in
the sky, means “Ear of Grain”, and is usually represented as wheat or corn.
How to remember Virgo: Spica makes a good guide-star, the remainder of the
constellation appears to be a woman in a long dress or robe with outstretched arms.
Vulpecula – the Fox
Hevelius created this obscure constellation. Originally, it was to be both a fox and a
goose, but common usage has dropped the goose and retained the fox. There is little of naked-
eye interest here. There is, however, a famous planetary nebula, the Dumbell (from its shape)
that is lovely in small telescopes.
How to remember Vulpecula: This is one of the more challenging constellations to see,
and it may be easier to remember it by position – its brightest stars are directly above Sagitta.

23
Additional References
I’ve drawn upon many sources in putting together this guide, but I highly recommend the books
below for additional reading.
Star Names: Their Lore and Meaning by Richard Hinckley Allen (1963) and published by
Dover Publications, Inc., New York, NY. (ISBN 0-486-21079-0).
The New Patterns in the Sky. Myths and Legends of the Stars by Julius D. W. Staal (1988) and
published by The McDonald and Woodward Publishing Company, Blacksburg, VA. (ISBN 0-
939923-04-1).
Burnham’s Celestial Handbook. An Observers Guide to the Universe Beyond the Solar System
(in 3 volumes) (1978) by Robert Burnham Jr. and published by Dover Publications, Inc., New
York, NY. (ISBN 0-486-23673-0).

Constellation guide

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