Asteroids

2025OM4 help

Last update: 2025-07-30 13:15 UTC

Orbital Properties

Epoch

60800.0

MJD

Orbit type

Aten

Perihelion (q)

0.609

Aphelion (Q)

1.115

Eccentricity (e)

0.294

Inclination (i)

2.3

deg

Orbit period (P)

292.4

Earth MOID

0.01383

U parameter

7.3

Next Earth close approach

Date

2029-07-27

Nominal distance (from Earth center)

0.04508

6744300

Maximum Brightness

20.2

mag

Risk

Object is not in risk list

Object is not in priority list

Physical Properties

Absolute Magnitude (H)

mag

Diameter

26 - 60*

Taxonomic type

Rotation period (T)

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

60800.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

0.862216

1-sigma variation

0.000127

Unit

Eccentricity (e)

Value

0.293699

1-sigma variation

0.000393

Unit

Inclination (i)

Value

2.2712

1-sigma variation

0.0040

Unit

Long. of Ascending Node (Ω)

Value

139.6074

1-sigma variation

0.0023

Unit

Arg. of Perihelion (ω)

Value

19.7997

1-sigma variation

0.0041

Unit

Mean Anomaly (M)

Value

21.81152

1-sigma variation

0.05667

Unit

Perihelion distance

Value

0.608984

1-sigma variation

Unit

Aphelion distance

Value

1.115448

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.369536

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.075579

1-sigma variation

Unit

MOID

Value

0.013829

1-sigma variation

Unit

Orbit Period

Value

292.4304

1-sigma variation

Unit

U parameter

Value

7.3

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.61832E-8	-4.96540E-8	-5.04580E-7	2.36321E-7	-3.47409E-7	7.09801E-6
e	-4.96540E-8	1.54247E-7	1.56252E-6	-6.71789E-7	1.19696E-6	-2.22092E-5
i	-5.04580E-7	1.56252E-6	1.58443E-5	-6.98510E-6	1.18428E-5	-2.24569E-4
Ω	2.36321E-7	-6.71789E-7	-6.98510E-6	5.07067E-6	-1.51323E-6	9.15457E-5
ω	-3.47409E-7	1.19696E-6	1.18428E-5	-1.51323E-6	1.66293E-5	-1.82131E-4
M	7.09801E-6	-2.22092E-5	-2.24569E-4	9.15457E-5	-1.82131E-4	3.21105E-3

Date of computation: 2025-07-30 13:15 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

25.02

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

26 - 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

0.717189

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2025-07-25.481638

Unit

Source

[2]

Last Observation

Value

2025-07-28.90661

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

18 (0)

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 2025OM4 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	1961-10-18 13:52	1112.1	0.1430383	0.0436793	0.0410600
EARTH	1965-10-19 20:38	1362.2	0.0499346	0.0340067	0.0415969
EARTH	1969-10-15 10:05	> 1 w	0.0447382	0.0297140	0.0363350
EARTH	1973-09-21 12:30	> 1 w	0.0983707	0.0643601	0.0118739
EARTH	1977-08-25 01:09	> 1 w	0.1025811	0.0876259	0.0050034
VENUS	1979-10-11 10:45	731.1	0.0238575	0.0151703	0.0052227
EARTH	1981-08-01 23:50	> 1 d	0.0612279	0.0527277	0.0029025
VENUS	1981-12-30 11:32	> 1 d	0.0429306	0.0281185	0.0104637
EARTH	1985-07-26 13:41	> 1 d	0.0323662	0.0150722	0.0227932
EARTH	1989-07-24 23:22	> 1 d	0.0218579	0.0147073	0.0229723
EARTH	1993-07-25 00:57	> 1 d	0.0237325	0.0148012	0.0203289
EARTH	1997-07-28 19:24	> 1 d	0.0457837	0.0223531	0.0084566
VENUS	1997-12-31 00:56	1328.7	0.0357203	0.0308527	0.0056167
EARTH	2001-08-04 17:49	> 1 d	0.0692832	0.0539120	0.0051948
VENUS	2003-10-12 01:36	> 1 d	0.0168186	0.0101668	0.0182293
EARTH	2005-08-09 04:14	> 1 d	0.0811835	0.0612811	0.0068348
VENUS	2005-12-27 07:57	649.8	0.0371364	0.0313524	0.0049439
EARTH	2009-08-12 05:33	> 1 d	0.0859171	0.0805941	0.0017743
VENUS	2011-10-11 05:02	> 1 d	0.0168623	0.0101770	0.0155326
EARTH	2013-08-10 08:59	> 1 d	0.0845855	0.0696243	0.0050334
VENUS	2013-12-27 17:59	1183.4	0.0308349	0.0307319	0.0009592
EARTH	2017-08-04 17:26	> 1 d	0.0718062	0.0579027	0.0046817
EARTH	2021-07-31 21:07	> 1 d	0.0610279	0.0507038	0.0034721
EARTH	2025-07-28 03:40	1.5	0.0474048	0.0471944	0.0000701
EARTH	2029-07-27 12:11	1173.2	0.0447620	0.0330652	0.0039858
EARTH	2033-07-28 14:07	> 1 d	0.0500527	0.0330174	0.0058367
EARTH	2037-08-01 18:22	> 1 d	0.0650551	0.0500550	0.0050584
EARTH	2041-08-07 00:24	> 1 d	0.0788014	0.0703307	0.0028359
EARTH	2045-08-13 15:31	552.6	0.0913319	0.0889779	0.0007851
EARTH	2049-08-17 11:06	1391.4	0.0971452	0.0954929	0.0005536
EARTH	2053-08-20 10:06	> 1 d	0.1011307	0.0974588	0.0012354
VENUS	2053-12-24 19:32	1230.3	0.0416030	0.0303372	0.0056348
EARTH	2057-08-19 11:04	> 1 d	0.1005739	0.0945691	0.0020286
EARTH	2061-08-17 22:14	> 1 d	0.0992109	0.0911201	0.0027329
EARTH	2065-08-13 13:05	> 1 d	0.0936862	0.0849531	0.0029390
EARTH	2069-08-09 21:57	> 1 d	0.0877614	0.0810085	0.0022652
EARTH	2073-08-05 19:11	503.1	0.0796737	0.0778310	0.0006159
EARTH	2077-08-03 14:09	1095.3	0.0747287	0.0695937	0.0017149
EARTH	2081-08-02 14:39	> 1 d	0.0721489	0.0605456	0.0038932
EARTH	2085-08-03 16:30	> 1 d	0.0752878	0.0600010	0.0051427
EARTH	2089-08-06 06:54	> 1 d	0.0810197	0.0660511	0.0050337
EARTH	2093-08-10 17:40	> 1 d	0.0898188	0.0781892	0.0039039
EARTH	2097-08-15 11:33	> 1 d	0.0971086	0.0897918	0.0024510
EARTH	2101-08-22 06:44	> 1 d	0.1035399	0.1001391	0.0011365
EARTH	2105-08-26 23:21	386.8	0.1071040	0.1059567	0.0003825
EARTH	2109-08-31 12:10	1316.5	0.1090214	0.1085189	0.0001714
EARTH	2113-09-03 03:36	> 1 d	0.1093515	0.1085178	0.0002910
EARTH	2117-09-04 23:12	> 1 d	0.1096096	0.1081921	0.0004969
EARTH	2121-09-04 11:29	> 1 d	0.1097860	0.1085637	0.0004351
EARTH	2125-09-03 07:42	> 1 d	0.1100709	0.1094637	0.0002270

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
127.82276132	197.68884406	0.01382993	MINIMUM
237.48138208	282.18490133	0.03554143	MINIMUM
183.35695563	240.36876516	0.10816529	SADDLE
4.69001417	62.14844660	0.38284773	SADDLE
4.51547582	241.89490626	1.61707755	SADDLE
182.28737941	59.56069975	2.10671252	MAXIMUM

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MOID Plots

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