Asteroids

2025JH2 help

Last update: 2026-03-17 23:26 UTC

Orbital Properties

Epoch

61200.0

MJD

Orbit type

Aten

Perihelion (q)

0.882

Aphelion (Q)

1.040

Eccentricity (e)

0.082

Inclination (i)

10.5

deg

Orbit period (P)

344.0

Earth MOID

0.02514

U parameter

5.1

Next Earth close approach

Date

2041-05-05

Nominal distance (from Earth center)

0.06374

9534950

Maximum Brightness

23.5

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

mag

Diameter

11 - 24*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2025-05-08

Observatory

Mt. Lemmon 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

0.960870

1-sigma variation

0.000007

Unit

Eccentricity (e)

Value

0.082307

1-sigma variation

0.000034

Unit

Inclination (i)

Value

10.4673

1-sigma variation

0.0093

Unit

Long. of Ascending Node (Ω)

Value

50.8667

1-sigma variation

4.288E-5

Unit

Arg. of Perihelion (ω)

Value

18.5154

1-sigma variation

0.0023

Unit

Mean Anomaly (M)

Value

209.58678

1-sigma variation

0.00066

Unit

Perihelion distance

Value

0.881784

1-sigma variation

Unit

Aphelion distance

Value

1.039956

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.104815

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.025242

1-sigma variation

Unit

MOID

Value

0.025142

1-sigma variation

Unit

Orbit Period

Value

344.0292

1-sigma variation

Unit

U parameter

Value

5.1

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	4.63521E-11	-2.29840E-10	-6.33241E-8	-2.87146E-10	-1.52941E-8	-1.76462E-9
e	-2.29840E-10	1.14381E-9	3.15412E-7	1.42992E-9	7.65798E-8	7.69515E-9
i	-6.33241E-8	3.15412E-7	8.70023E-5	3.94303E-7	2.11264E-5	2.07535E-6
Ω	-2.87146E-10	1.42992E-9	3.94303E-7	1.83890E-9	9.56230E-8	9.57073E-9
ω	-1.52941E-8	7.65798E-8	2.11264E-5	9.56230E-8	5.25778E-6	3.02173E-7
M	-1.76462E-9	7.69515E-9	2.07535E-6	9.57073E-9	3.02173E-7	4.41599E-7

Date of computation: 2026-03-17 23:26 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

27.008

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

11 - 24*

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

368

Unit

Source

[1]

Normalized RMS of residuals

Value

1.06364

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2025-05-02.404552

Unit

Source

[2]

Last Observation

Value

2025-05-15.261791

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

27 (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 2025JH2 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	1959-05-10 00:44	154.2	0.0322201	0.0302647	0.0007004
EARTH	1959-10-24 07:10	467.6	0.1186771	0.1173272	0.0004648
EARTH	1976-01-01 06:36	171.4	0.1714265	0.1713470	0.0000268
EARTH	1976-05-13 03:32	28.9	0.0333549	0.0328549	0.0001681
EARTH	1976-10-11 06:32	11.8	0.1424471	0.1421174	0.0001100
EARTH	1992-05-02 17:17	27.9	0.1094758	0.1075279	0.0006499
EARTH	1992-11-11 02:08	379.5	0.1022711	0.1022356	0.0000206
EARTH	2008-12-25 03:11	441.0	0.1625895	0.1608886	0.0005743
EARTH	2009-05-15 02:06	145.9	0.0464310	0.0442798	0.0007287
EARTH	2009-10-05 12:46	430.3	0.1538763	0.1526014	0.0004329
EARTH	2025-01-13 15:45	47.2	0.1831915	0.1828137	0.0001260
EARTH	2025-05-10 21:02	< 1 min	0.0253088	0.0252445	0.0000214
EARTH	2025-10-15 10:56	50.8	0.1348944	0.1347692	0.0000417
EARTH	2041-05-05 19:58	106.8	0.0637372	0.0611619	0.0008645
EARTH	2041-10-30 00:50	418.7	0.1102173	0.1094036	0.0002830
EARTH	2057-12-05 15:42	314.6	0.1286012	0.1279986	0.0002041
EARTH	2058-05-21 23:58	52.5	0.1046352	0.1030205	0.0005388
EARTH	2058-09-11 09:21	99.9	0.1914287	0.1902952	0.0003793
EARTH	2074-01-12 07:37	162.4	0.1826557	0.1817953	0.0002880
EARTH	2074-05-10 14:40	56.7	0.0252589	0.0250356	0.0000855
EARTH	2074-10-16 02:54	342.3	0.1333998	0.1324875	0.0003076
EARTH	2090-04-29 22:36	190.4	0.1635869	0.1456644	0.0060097
EARTH	2090-11-21 14:30	> 1 d	0.1074757	0.1048446	0.0014385
EARTH	2091-05-27 22:03	592.9	0.1571610	0.1399547	0.0058053
EARTH	2107-01-07 05:36	> 1 d	0.1777838	0.1687310	0.0033979
EARTH	2107-05-12 06:27	964.0	0.0252288	0.0251533	0.0005246
EARTH	2107-10-14 18:13	> 1 d	0.1385805	0.1257460	0.0049388
EARTH	2123-05-02 01:30	> 1 d	0.1367310	0.0446629	0.0864497
EARTH	2123-11-15 19:45	> 1 mo	0.1025641	0.1022957	0.0065303
EARTH	2124-05-30 13:37	> 1 d	0.1829172	0.0710837	0.0848431

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
159.12797038	128.15003151	0.02347332	MINIMUM
340.79298607	308.23498145	0.10405816	MINIMUM
62.74997915	34.49036528	0.18444055	SADDLE
257.45353094	221.74978206	0.18509549	SADDLE
354.26901240	142.42510272	1.89639487	SADDLE
170.64824646	318.75384088	2.02652740	MAXIMUM

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MOID Plots

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