Asteroids

2025JA help

Last update: 2026-06-04 23:11 UTC

Orbital Properties

Epoch

61200.0

MJD

Orbit type

Apollo

Perihelion (q)

0.952

Aphelion (Q)

1.163

Eccentricity (e)

0.100

Inclination (i)

8.8

deg

Orbit period (P)

397.3

Earth MOID

0.00335

U parameter

5.1

Next Earth close approach

Date

2036-11-30

Nominal distance (from Earth center)

0.12845

19215850

Maximum Brightness

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

28.1

mag

Diameter

6 - 15*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2025-05-01

Observatory

University of Arizona Catalina Sky Survey

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

61200.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

1.057594

1-sigma variation

0.000009

Unit

Eccentricity (e)

Value

0.099713

1-sigma variation

0.000012

Unit

Inclination (i)

Value

8.7960

1-sigma variation

0.0009

Unit

Long. of Ascending Node (Ω)

Value

41.9359

1-sigma variation

2.322E-5

Unit

Arg. of Perihelion (ω)

Value

110.7035

1-sigma variation

0.0012

Unit

Mean Anomaly (M)

Value

63.63318

1-sigma variation

0.00677

Unit

Perihelion distance

Value

0.952138

1-sigma variation

Unit

Aphelion distance

Value

1.163049

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.093126

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.003731

1-sigma variation

Unit

MOID

Value

0.003346

1-sigma variation

Unit

Orbit Period

Value

397.2617

1-sigma variation

Unit

U parameter

Value

5.1

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	7.73163E-11	1.02533E-10	8.25455E-9	2.03308E-10	9.54277E-9	-5.95206E-8
e	1.02533E-10	1.37442E-10	1.10413E-8	2.72014E-10	1.21266E-8	-7.85999E-8
i	8.25455E-9	1.10413E-8	8.88073E-7	2.18623E-8	9.84706E-7	-6.33310E-6
Ω	2.03308E-10	2.72014E-10	2.18623E-8	5.39334E-10	2.42276E-8	-1.55967E-7
ω	9.54277E-9	1.21266E-8	9.84706E-7	2.42276E-8	1.36817E-6	-7.46641E-6
M	-5.95206E-8	-7.85999E-8	-6.33310E-6	-1.55967E-7	-7.46641E-6	4.58967E-5

Date of computation: 2026-06-04 23:11 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

28.062

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

6 - 15*

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

400

Unit

Source

[1]

Normalized RMS of residuals

Value

0.859262

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2025-05-01.440203

Unit

Source

[2]

Last Observation

Value

2025-05-02.931382

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

159 (15)

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 2025JA 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
EARTH	1950-04-25 18:40	> 1 w	0.0904623	0.0042696	0.2109650
EARTH	1964-10-08 05:57	> 1 w	0.1672586	0.1311790	0.0132541
EARTH	1965-05-04 18:33	> 1 d	0.0363634	0.0026056	0.0319633
EARTH	1978-10-24 08:30	66.8	0.1340373	0.1328927	0.0003831
EARTH	1979-05-01 19:47	99.3	0.0164370	0.0133237	0.0010431
EARTH	1993-11-09 22:59	452.3	0.0745631	0.0718709	0.0009341
EARTH	1994-04-22 18:37	158.9	0.1185756	0.1132867	0.0017632
EARTH	2008-11-19 21:17	94.9	0.0770061	0.0741472	0.0009798
EARTH	2010-05-13 06:34	67.3	0.1973200	0.1929811	0.0014463
EARTH	2024-10-14 11:15	16.3	0.1516752	0.1516585	0.0000056
EARTH	2025-05-02 03:46	< 1 s	0.0034107	0.0034096	0.0000003
EARTH	2036-11-30 01:51	54.7	0.1284500	0.1264086	0.0006856
EARTH	2049-10-26 15:15	662.2	0.1332298	0.1310745	0.0007291
EARTH	2050-05-04 02:28	136.6	0.0279176	0.0237728	0.0013825
EARTH	2061-10-19 05:30	> 1 d	0.1549058	0.1380872	0.0064099
EARTH	2062-05-07 04:39	1113.3	0.0773988	0.0353577	0.0140138
EARTH	2084-11-29 13:19	712.7	0.1062405	0.0977081	0.0033164
EARTH	2096-11-18 22:16	> 1 d	0.0866897	0.0859797	0.0020296
EARTH	2097-04-22 02:59	> 1 d	0.0922924	0.0422888	0.0167412
EARTH	2108-11-16 21:13	> 1 d	0.0891045	0.0863806	0.0055231
EARTH	2109-04-25 08:28	> 1 d	0.0762971	0.0056558	0.0238813
EARTH	2120-11-24 11:36	> 1 d	0.0860559	0.0833505	0.0030755
EARTH	2121-04-13 06:28	> 1 d	0.1359585	0.1012584	0.0116467

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
63.74262339	119.49002253	0.00166830	MINIMUM
270.98002253	317.06508309	0.08009338	MINIMUM
343.25066250	32.34048939	0.15181470	SADDLE
169.00658521	222.10896421	0.22007230	SADDLE
6.05847740	237.42831432	1.95807985	SADDLE
190.23844023	61.66484113	2.14899297	MAXIMUM

Download:

MOID Plots

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