Asteroids

2025OA3 help

Last update: 2025-07-29 13:15 UTC

Orbital Properties

Epoch

60800.0

MJD

Orbit type

Aten

Perihelion (q)

0.606

Aphelion (Q)

1.232

Eccentricity (e)

0.341

Inclination (i)

19.9

deg

Orbit period (P)

321.8

Earth MOID

0.01039

U parameter

7.9

Next Earth close approach

Date

2025-08-04

Nominal distance (from Earth center)

0.0153

2288713

Maximum Brightness

18.4

mag

Risk

Object is not in risk list

Object is not in priority list

Physical Properties

Absolute Magnitude (H)

25.1

mag

Diameter

25 - 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

0.919039

1-sigma variation

0.000353

Unit

Eccentricity (e)

Value

0.340984

1-sigma variation

0.000860

Unit

Inclination (i)

Value

19.9267

1-sigma variation

0.0768

Unit

Long. of Ascending Node (Ω)

Value

130.7189

1-sigma variation

0.0030

Unit

Arg. of Perihelion (ω)

Value

308.1330

1-sigma variation

0.0582

Unit

Mean Anomaly (M)

Value

168.03261

1-sigma variation

0.23972

Unit

Perihelion distance

Value

0.605662

1-sigma variation

Unit

Aphelion distance

Value

1.232417

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.314667

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.014604

1-sigma variation

Unit

MOID

Value

0.010393

1-sigma variation

Unit

Orbit Period

Value

321.8101

1-sigma variation

Unit

U parameter

Value

7.9

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.24572E-7	3.02969E-7	2.70885E-5	1.06838E-6	-2.05399E-5	8.45788E-5
e	3.02969E-7	7.39297E-7	6.60414E-5	2.58510E-6	-4.99567E-5	2.06020E-4
i	2.70885E-5	6.60414E-5	5.90092E-3	2.31454E-4	-4.46658E-3	1.84126E-2
Ω	1.06838E-6	2.58510E-6	2.31454E-4	9.23652E-6	-1.76145E-4	7.23653E-4
ω	-2.05399E-5	-4.99567E-5	-4.46658E-3	-1.76145E-4	3.38669E-3	-1.39459E-2
M	8.45788E-5	2.06020E-4	1.84126E-2	7.23653E-4	-1.39459E-2	5.74663E-2

Date of computation: 2025-07-29 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

25.101

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

[-]

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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

0.262861

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2025-07-25.422762

Unit

Source

[2]

Last Observation

Value

2025-07-29.226866

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 2025OA3 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	1950-08-04 19:56	16.0	0.0569031	0.0104039	0.0398040
EARTH	1958-07-30 22:02	1326.5	0.1738145	0.0837800	0.0300822
VENUS	1962-05-26 16:39	> 1 d	0.0311761	0.0144683	0.0260507
EARTH	1973-08-03 21:30	830.7	0.0176997	0.0092795	0.0253714
VENUS	1982-09-17 21:49	1409.8	0.0422459	0.0181178	0.0205003
EARTH	1988-08-03 18:56	672.3	0.0145792	0.0092769	0.0270989
EARTH	2003-08-01 12:47	839.1	0.1356203	0.0879325	0.0159576
VENUS	2009-02-25 05:22	> 1 d	0.0442694	0.0183217	0.0408218
EARTH	2010-08-03 14:48	> 1 d	0.1299529	0.0366887	0.0318094
VENUS	2015-04-27 11:11	> 1 d	0.0480455	0.0185323	0.0426453
EARTH	2025-08-04 02:38	< 1 min	0.0152991	0.0151390	0.0000534
EARTH	2032-07-30 17:14	> 1 d	0.1890455	0.1250433	0.0215661
EARTH	2047-08-03 11:35	> 1 d	0.0707725	0.0110243	0.0711168
EARTH	2054-08-03 18:47	> 1 d	0.1250781	0.0189898	0.0649802
EARTH	2069-07-31 08:13	> 1 d	0.1628511	0.0466538	0.0389811
EARTH	2076-08-04 09:55	89.0	0.0345754	0.0112803	0.0159801
VENUS	2090-12-22 01:46	> 1 d	0.0473145	0.0196801	0.0659283
VENUS	2097-02-16 03:46	> 1 d	0.0339565	0.0190114	0.0634060
EARTH	2098-08-03 20:35	1322.9	0.0390521	0.0088252	0.0531605
EARTH	2105-08-05 08:57	127.6	0.0859413	0.0290680	0.0190451

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
250.91736563	210.07150912	0.01039325	MINIMUM
67.06951865	60.72184417	0.26161915	MINIMUM
153.03057400	138.09716954	0.40490981	SADDLE
342.18091922	313.35359573	0.45298135	SADDLE
352.53811678	148.32610346	1.60421055	SADDLE
183.54778293	340.60532885	2.19766461	MAXIMUM

Download:

MOID Plots

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