Asteroids

2025JA2 help

Last update: 2025-11-24 16:53 UTC

Orbital Properties

Epoch

61000.0

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

0.01772

U parameter

6.4

Next Earth close approach

Date

2032-05-04

Nominal distance (from Earth center)

0.17006

25440056

Maximum Brightness

22.8

mag

Risk

Object is not in risk 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

61000.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

0.695441

1-sigma variation

0.000022

Unit

Eccentricity (e)

Value

0.535656

1-sigma variation

0.000043

Unit

Inclination (i)

Value

43.8630

1-sigma variation

0.0359

Unit

Long. of Ascending Node (Ω)

Value

225.7886

1-sigma variation

0.0004

Unit

Arg. of Perihelion (ω)

Value

165.4313

1-sigma variation

0.0083

Unit

Mean Anomaly (M)

Value

196.04772

1-sigma variation

0.00897

Unit

Perihelion distance

Value

0.322924

1-sigma variation

Unit

Aphelion distance

Value

1.067958

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.019298

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.664264

1-sigma variation

Unit

MOID

Value

0.017723

1-sigma variation

Unit

Orbit Period

Value

211.8306

1-sigma variation

Unit

U parameter

Value

6.4

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	4.74901E-10	9.29078E-10	7.81567E-7	-8.48991E-9	-1.80128E-7	1.95190E-7
e	9.29078E-10	1.81998E-9	1.53024E-6	-1.66216E-8	-3.52563E-7	3.82480E-7
i	7.81567E-7	1.53024E-6	1.28692E-3	-1.39788E-5	-2.96530E-4	3.21547E-4
Ω	-8.48991E-9	-1.66216E-8	-1.39788E-5	1.51843E-7	3.22104E-6	-3.49263E-6
ω	-1.80128E-7	-3.52563E-7	-2.96530E-4	3.22104E-6	6.83338E-5	-7.40786E-5
M	1.95190E-7	3.82480E-7	3.21547E-4	-3.49263E-6	-7.40786E-5	8.03874E-5

Date of computation: 2025-11-24 16:53 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

23.247

Unit

mag

Source

[1]

Slope Parameter (G)

Value

0.15**

Unit

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

[-]

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

298

Unit

Source

[1]

Normalized RMS of residuals

Value

0.603675

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

2025-05-17.3108

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

92 (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

Note: Ephemerides requests are limited to a maximum of 1000 points and a final date not exceeding 2040/12/31 00:00.

Close Approaches for 2025JA2 from 1950 to 2126

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 09:17	64.0	0.0115955	0.0113832	0.0004376
EARTH	1956-05-06 07:10	6.4	0.0224527	0.0210155	0.0005279
EARTH	1967-05-06 21:55	38.6	0.0698779	0.0605072	0.0031543
MERCURY	1970-06-28 05:19	292.8	0.0423561	0.0133764	0.0104895
EARTH	1974-05-06 00:46	104.4	0.1121943	0.0980579	0.0047316
EARTH	1978-05-05 17:17	120.6	0.1496164	0.1357007	0.0046617
MERCURY	1983-04-02 10:53	433.0	0.0212795	0.0110661	0.0131254
EARTH	1985-05-06 15:38	37.0	0.0298542	0.0198849	0.0045810
EARTH	1996-05-06 10:18	39.5	0.0494967	0.0352187	0.0049949
MERCURY	1998-11-27 11:58	395.8	0.0192421	0.0109403	0.0115454
EARTH	2003-05-05 23:17	122.2	0.1412862	0.1272349	0.0046951
EARTH	2007-05-06 13:03	76.4	0.1210625	0.1108800	0.0034088
EARTH	2014-05-06 19:48	32.2	0.0620255	0.0554092	0.0022229
MERCURY	2014-07-24 22:54	174.2	0.0133629	0.0109002	0.0036049
EARTH	2018-05-05 03:46	51.5	0.1900161	0.1862151	0.0012690
EARTH	2025-05-06 21:48	< 1 s	0.0236756	0.0236313	0.0000148
MERCURY	2030-03-21 06:26	60.8	0.0266137	0.0208157	0.0019933
EARTH	2032-05-04 19:53	33.6	0.1700563	0.1654776	0.0015273
EARTH	2036-05-06 04:48	26.4	0.0995305	0.0933256	0.0020743
MERCURY	2042-12-24 16:10	239.2	0.0279838	0.0109493	0.0078023
EARTH	2043-05-07 01:35	46.4	0.0776840	0.0672875	0.0034924
EARTH	2047-05-05 17:49	79.9	0.1796630	0.1689534	0.0035813
EARTH	2054-05-07 07:04	2.9	0.0217561	0.0194623	0.0021483
MERCURY	2058-08-21 17:10	461.2	0.0305008	0.0109129	0.0156886
EARTH	2061-05-05 06:19	211.7	0.1685812	0.1446504	0.0080059
EARTH	2065-05-06 12:33	134.8	0.1045241	0.0798464	0.0083461
MERCURY	2071-05-27 15:39	777.0	0.0128553	0.0113815	0.0129399
EARTH	2072-05-06 13:44	144.6	0.0670415	0.0354768	0.0112284
EARTH	2076-05-04 20:44	309.4	0.1927415	0.1577105	0.0118274
EARTH	2083-05-07 15:43	65.3	0.0360475	0.0203817	0.0133475
MERCURY	2084-03-01 09:11	1191.0	0.0293052	0.0111951	0.0390618
EARTH	2090-05-06 04:15	406.3	0.1408407	0.0901568	0.0171415
EARTH	2094-05-06 12:59	303.3	0.1320249	0.0886970	0.0147770
MERCURY	2096-12-05 16:48	1161.3	0.0317851	0.0112097	0.0385792
EARTH	2101-05-08 04:30	97.9	0.0362444	0.0204346	0.0126411
EARTH	2112-05-07 21:21	83.0	0.0636393	0.0399778	0.0082902
EARTH	2119-05-08 00:27	82.6	0.1127059	0.0994577	0.0044348
EARTH	2123-05-07 13:41	19.3	0.1539263	0.1502204	0.0012368
MERCURY	2125-05-10 07:43	1.7	0.0372046	0.0366448	0.0001869

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
207.18814791	124.09745971	0.01772250	MINIMUM
17.87472318	319.10521836	0.65812464	MINIMUM
62.47372454	21.21323612	0.70155419	SADDLE
320.31780735	229.26297431	0.76726595	SADDLE
333.75850036	75.91333990	1.30256759	SADDLE
183.55812742	294.47256705	2.05475099	MAXIMUM

Download:

MOID Plots

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