Asteroids

2025JA2 help

Last update: 2025-05-15 12:30 UTC

Orbital Properties

Epoch

60800.0

MJD

Orbit type

Aten

Perihelion (q)

0.323

Aphelion (Q)

1.068

Eccentricity (e)

0.536

Inclination (i)

43.9

deg

Orbit period (P)

211.8

Earth MOID

0.01923

U parameter

6.5

Next Earth close approach

Date

2032-05-04

Nominal distance (from Earth center)

0.1703

25476878

Maximum Brightness

22.8

mag

Risk

Object is not in risk list

Object is in priority list

Physical Properties

Absolute Magnitude (H)

23.2

mag

Diameter

60 - 130*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2025-05-06

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

60800.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

0.695320

1-sigma variation

0.000022

Unit

Eccentricity (e)

Value

0.535762

1-sigma variation

0.000043

Unit

Inclination (i)

Value

43.8729

1-sigma variation

0.0362

Unit

Long. of Ascending Node (Ω)

Value

225.7904

1-sigma variation

0.0004

Unit

Arg. of Perihelion (ω)

Value

165.4567

1-sigma variation

0.0084

Unit

Mean Anomaly (M)

Value

216.09021

1-sigma variation

0.02523

Unit

Perihelion distance

Value

0.322794

1-sigma variation

Unit

Aphelion distance

Value

1.067846

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.020931

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.664312

1-sigma variation

Unit

MOID

Value

0.019231

1-sigma variation

Unit

Orbit Period

Value

211.7755

1-sigma variation

Unit

U parameter

Value

6.5

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	4.90843E-10	9.46354E-10	8.01281E-7	-8.78506E-9	-1.85520E-7	5.58953E-7
e	9.46354E-10	1.82765E-9	1.54651E-6	-1.69543E-8	-3.57901E-7	1.07847E-6
i	8.01281E-7	1.54651E-6	1.30897E-3	-1.43504E-5	-3.02966E-4	9.12885E-4
Ω	-8.78506E-9	-1.69543E-8	-1.43504E-5	1.57328E-7	3.32157E-6	-1.00083E-5
ω	-1.85520E-7	-3.57901E-7	-3.02966E-4	3.32157E-6	7.01350E-5	-2.11319E-4
M	5.58953E-7	1.07847E-6	9.12885E-4	-1.00083E-5	-2.11319E-4	6.36721E-4

Date of computation: 2025-05-15 12:30 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

23.248

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

60 - 130*

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

0.596228

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2025-05-06.176325

Unit

Source

[2]

Last Observation

Value

2025-05-13.9465

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

90 (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 2025JA2 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
MERCURY	1954-10-31 09:28	108.2	0.0115250	0.0113512	0.0006664
EARTH	1956-05-06 07:11	8.3	0.0223632	0.0202931	0.0008126
EARTH	1967-05-06 21:48	42.3	0.0703858	0.0601717	0.0034412
MERCURY	1970-06-28 06:07	309.0	0.0440410	0.0132832	0.0111160
EARTH	1974-05-06 01:03	106.8	0.1114398	0.0968655	0.0048791
EARTH	1978-05-05 16:57	122.2	0.1503561	0.1363285	0.0046994
MERCURY	1983-04-02 12:02	427.3	0.0192489	0.0110973	0.0124001
EARTH	1985-05-06 15:44	35.2	0.0291391	0.0197290	0.0044118
EARTH	1996-05-06 10:12	39.3	0.0502835	0.0363663	0.0048475
MERCURY	1998-11-27 13:00	382.6	0.0174702	0.0109670	0.0105657
EARTH	2003-05-05 23:37	118.7	0.1405450	0.1268899	0.0045625
EARTH	2007-05-06 12:51	75.5	0.1216032	0.1116256	0.0033398
EARTH	2014-05-06 19:53	32.4	0.0616678	0.0550110	0.0022370
MERCURY	2014-07-24 23:22	175.6	0.0139690	0.0108938	0.0039333
EARTH	2018-05-05 03:37	52.0	0.1902204	0.1863890	0.0012791
EARTH	2025-05-06 21:48	< 1 s	0.0236731	0.0236284	0.0000149
MERCURY	2030-03-21 06:17	61.3	0.0262944	0.0204754	0.0020040
EARTH	2032-05-04 19:48	33.9	0.1703024	0.1656863	0.0015398
EARTH	2036-05-06 04:52	26.5	0.0991965	0.0929420	0.0020909
MERCURY	2042-12-24 15:31	241.1	0.0292425	0.0110181	0.0079253
EARTH	2043-05-07 01:28	47.0	0.0782459	0.0677583	0.0035228
EARTH	2047-05-05 18:02	80.6	0.1790868	0.1682755	0.0036154
EARTH	2054-05-07 07:04	2.4	0.0214214	0.0194498	0.0020364
MERCURY	2058-08-21 15:54	479.0	0.0279688	0.0109588	0.0160198
EARTH	2061-05-05 05:43	222.6	0.1698883	0.1448756	0.0083689
EARTH	2065-05-06 12:55	140.9	0.1031569	0.0771634	0.0088039
MERCURY	2071-05-27 13:32	828.6	0.0114780	0.0113936	0.0035169
EARTH	2072-05-06 13:19	166.6	0.0689159	0.0345392	0.0123277
EARTH	2076-05-04 21:41	376.8	0.1906627	0.1485145	0.0142728
EARTH	2083-05-07 15:54	75.1	0.0335906	0.0201456	0.0173997
MERCURY	2084-03-01 05:26	> 1 d	0.0367782	0.0110026	0.0548381
EARTH	2090-05-06 02:52	620.9	0.1442178	0.0701581	0.0253863
EARTH	2094-05-06 14:01	470.9	0.1290278	0.0632129	0.0230821
MERCURY	2096-12-05 12:46	> 1 d	0.0398730	0.0109838	0.0640025
EARTH	2101-05-08 04:07	188.6	0.0389875	0.0206548	0.0224014
EARTH	2112-05-07 21:41	176.6	0.0616198	0.0227742	0.0180394
EARTH	2119-05-07 24:00	282.2	0.1140708	0.0727539	0.0140304
EARTH	2123-05-07 13:56	200.0	0.1532367	0.1274640	0.0086742
MERCURY	2125-05-10 07:08	551.1	0.0359918	0.0114714	0.0189710

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
207.23512003	123.24380516	0.01923064	MINIMUM
17.76850278	317.99464681	0.65832143	MINIMUM
62.32651697	20.19640825	0.70165521	SADDLE
320.43188901	228.40985524	0.76613046	SADDLE
334.00594864	75.26950909	1.30159445	SADDLE
183.59180939	293.62005457	2.05443534	MAXIMUM

Download:

MOID Plots

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