Asteroids

2025UF9 help

Last update: 2025-11-02 13:00 UTC

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.990

Aphelion (Q)

1.234

Eccentricity (e)

0.109

Inclination (i)

37.2

deg

Orbit period (P)

428.2

Earth MOID

0.00104

U parameter

6.1

Next Earth close approach

Date

2052-10-22

Nominal distance (from Earth center)

0.19752

29548783

Maximum Brightness

24.6

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

25.1

mag

Diameter

25 - 60*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2025-10-28

Observatory

ATLAS Chile, Rio Hurtado

ORBIT VISUALISATION TOOLS

External links

Proper elements

Epoch

Near present day

Near middle of observation arc

Orbit properties

Epoch
Semimajor Axis
Eccentricity (e)
Inclination (i)
Long. of Ascending Node (Ω)
Arg. of Perihelion (ω)
Mean Anomaly (M)
Perihelion distance
Aphelion distance
Asc. Node-Earth Sep.
Desc. Node-Earth Sep.
MOID
Orbit Period
U parameter

Value

1-sigma variation

Unit

Epoch

Value

61000.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

1.111865

1-sigma variation

0.000042

Unit

Eccentricity (e)

Value

0.109438

1-sigma variation

0.000032

Unit

Inclination (i)

Value

37.2077

1-sigma variation

0.0021

Unit

Long. of Ascending Node (Ω)

Value

35.9379

1-sigma variation

5.294E-6

Unit

Arg. of Perihelion (ω)

Value

16.9272

1-sigma variation

0.0045

Unit

Mean Anomaly (M)

Value

5.31638

1-sigma variation

0.00349

Unit

Perihelion distance

Value

0.990185

1-sigma variation

Unit

Aphelion distance

Value

1.233545

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.001041

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.219194

1-sigma variation

Unit

MOID

Value

0.001040

1-sigma variation

Unit

Orbit Period

Value

428.2293

1-sigma variation

Unit

U parameter

Value

6.1

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.75087E-9	1.35802E-9	8.89708E-8	-2.21143E-10	-1.88299E-7	1.45805E-7
e	1.35802E-9	1.05332E-9	6.90070E-8	-1.71519E-10	-1.46029E-7	1.13073E-7
i	8.89708E-8	6.90070E-8	4.52462E-6	-1.12464E-8	-9.57024E-6	7.41050E-6
Ω	-2.21143E-10	-1.71519E-10	-1.12464E-8	2.80236E-11	2.37937E-8	-1.84242E-8
ω	-1.88299E-7	-1.46029E-7	-9.57024E-6	2.37937E-8	2.02950E-5	-1.57157E-5
M	1.45805E-7	1.13073E-7	7.41050E-6	-1.84242E-8	-1.57157E-5	1.21696E-5

Date of computation: 2025-11-02 13:00 UTC

Note: The ASCII file is in a format suitable for Orbfit input.

Download ASCII file:

Physical properties

Rotation Period
Quality
Amplitude
Rotation Direction
Spinvector L
Spinvector B

Rotational properties

Value

Unit

Source

Rotation Period

Value

Unit

Source

[-]

Quality

Value

Unit

Source

[-]

Amplitude

Value

Unit

mag

Source

[-]

Rotation Direction

Value

Unit

Source

[-]

Spinvector L

Value

Unit

Source

[-]

Spinvector B

Value

Unit

Source

[-]

Taxonomy
Taxonomy (all)

Taxonomy

Value

Unit

Source

Taxonomy

Value

Unit

Source

[-]

Taxonomy (all)

Value

Unit

Source

[-]

Absolute Magnitude (H)
Slope Parameter (G)

H / G

Value

Unit

Source

Absolute Magnitude (H)

Value

25.142

Unit

mag

Source

[1]

Slope Parameter (G)

Value

0.15**

Unit

mag

Source

[1]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

0.05 - 0.25

Unit

Source

[2]

Diameter

Value

25 - 60*

Unit

Source

[2]

Color Index Information

Color Index Information

Value

Unit

Source

Color Index Information

Value

Unit

mag

Source

[-]

Sightings

Sightings

Value

Unit

Source

Sightings

Value

Unit

Source

[-]

Download this part as:

Sources

No.	Name	Additional
[1]	ESA Aegis	ESA orbit determination and impact monitoring system
[2]	Estimation	Estimated from absolute magnitude

Observational Information

Arc Length
Unobserved
Normalized RMS of residuals

Arc Information

Value

Unit

Source

Arc Length

Value

Unit

Source

[1]

Unobserved

Value

Unit

Source

[1]

Normalized RMS of residuals

Value

0.528398

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2025-10-28.285397

Unit

Source

[2]

Last Observation

Value

2025-11-01.147984

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

84 (6)

Unit

Source

[1]

Radar Summary

First Observation
Last Observation
Delay (Discarded)
Doppler (Discarded)
Total Optical Observations (Discarded)

Radar

Value

Unit

Source

First Observation

Value

Unit

Source

[-]

Last Observation

Value

Unit

Source

[-]

Delay (Discarded)

Value

0 (0)

Unit

Source

[-]

Doppler (Discarded)

Value

0 (0)

Unit

Source

[-]

Total Radar Observations (Discarded)

Value

0 (0)

Unit

Source

[-]

Note: The ASCII file is in a format suitable for Orbfit input.

Sources

No.	Name	Additional
[1]	ESA Aegis	ESA orbit determination and impact monitoring system
[2]	MPC	Minor Planet Center: https://www.minorplanetcenter.net

Computation parameters

As seen from:

Initial Date: *

Final Date: *

Output option:

One line per time step

Time step:*

* - these fields are required

Close Approaches for 2025UF9 from 1950 to 2125

Body	Date in UTC	Time uncert. in min	Nominal distance in au	Min. possible distance in au	Distance uncert. in au
EARTH	1952-10-28 23:25	330.2	0.0013226	0.0012947	0.0012990
EARTH	1974-11-02 07:01	14.0	0.1049443	0.1040651	0.0002931
EARTH	1981-10-23 01:00	84.5	0.1721911	0.1670825	0.0017029
EARTH	2003-10-28 03:17	392.7	0.0488049	0.0260928	0.0075719
EARTH	2025-10-29 12:41	< 1 s	0.0019381	0.0019378	0.0000001
EARTH	2052-10-22 00:11	441.0	0.1975214	0.1708976	0.0088748
EARTH	2059-10-30 12:33	568.9	0.0116586	0.0010224	0.0108101
EARTH	2079-10-26 12:13	> 1 w	0.0995173	0.0001578	0.2665731
EARTH	2106-11-02 15:06	> 1 w	0.0719882	0.0002991	0.4448928

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
344.81163137	295.52857898	0.00103987	MINIMUM
160.11572621	113.15156986	0.21891692	MINIMUM
70.96753683	29.02248320	0.65991330	SADDLE
254.60116527	199.42717517	0.69769915	SADDLE
47.13722262	178.75176966	1.95605022	SADDLE
286.07262810	58.01083230	1.98637104	SADDLE
335.66367019	107.48655153	2.00392975	MAXIMUM
166.99072503	298.12477096	2.22206190	MAXIMUM

Download:

MOID Plots

Click on the images to zoom-in and zoom-out