Asteroids

2025NH1 help

Last update: 2025-07-09 17:00 UTC

Orbital Properties

Epoch

60800.0

MJD

Orbit type

Aten

Perihelion (q)

0.399

Aphelion (Q)

1.258

Eccentricity (e)

0.518

Inclination (i)

4.7

deg

Orbit period (P)

275.6

Earth MOID

0.00004

U parameter

5.4

Next Earth close approach

Date

2027-04-22

Nominal distance (from Earth center)

0.15102

22592434

Maximum Brightness

30.5

mag

Risk

Object is not in risk list

Object is not in priority list

Physical Properties

Absolute Magnitude (H)

30.9

mag

Diameter

1.8 - 4*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2025-07-04

Observatory

Space Surveillance Telescope, HEH Station

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

0.828733

1-sigma variation

0.000006

Unit

Eccentricity (e)

Value

0.518125

1-sigma variation

0.000209

Unit

Inclination (i)

Value

4.7163

1-sigma variation

0.0029

Unit

Long. of Ascending Node (Ω)

Value

102.9439

1-sigma variation

1.234E-5

Unit

Arg. of Perihelion (ω)

Value

321.1168

1-sigma variation

0.0018

Unit

Mean Anomaly (M)

Value

191.12274

1-sigma variation

0.02664

Unit

Perihelion distance

Value

0.399346

1-sigma variation

Unit

Aphelion distance

Value

1.258120

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.551721

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.000287

1-sigma variation

Unit

MOID

Value

0.000043

1-sigma variation

Unit

Orbit Period

Value

275.5625

1-sigma variation

Unit

U parameter

Value

5.4

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	3.83219E-11	1.17161E-9	1.63350E-8	-6.31908E-11	8.80476E-9	1.51894E-7
e	1.17161E-9	4.36045E-8	6.07007E-7	-2.47988E-9	3.60050E-7	5.55958E-6
i	1.63350E-8	6.07007E-7	8.46036E-6	-3.47785E-8	5.00922E-6	7.74027E-5
Ω	-6.31908E-11	-2.47988E-9	-3.47785E-8	1.52328E-10	-2.09227E-8	-3.14921E-7
ω	8.80476E-9	3.60050E-7	5.00922E-6	-2.09227E-8	3.08348E-6	4.55870E-5
M	1.51894E-7	5.55958E-6	7.74027E-5	-3.14921E-7	4.55870E-5	7.09769E-4

Date of computation: 2025-07-09 17:00 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

30.887

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

1.8 - 4*

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

0.6

Unit

Source

[1]

Unobserved

Value

Unit

Source

[1]

Normalized RMS of residuals

Value

0.302354

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2025-07-04.355331

Unit

Source

[2]

Last Observation

Value

2025-07-04.909059

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

8 (1)

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 2025NH1 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	1957-04-18 05:40	> 1 d	0.1425957	0.1151632	0.0097620
EARTH	1960-04-13 10:34	133.4	0.0869323	0.0816356	0.0025888
VENUS	1962-06-15 23:15	129.7	0.0123718	0.0121735	0.0004519
EARTH	1963-04-14 19:06	59.1	0.1025980	0.0988655	0.0012898
EARTH	1966-04-17 07:53	84.7	0.1799977	0.1748614	0.0017194
VENUS	1971-04-24 14:42	75.7	0.0339722	0.0305917	0.0011286
EARTH	1973-07-02 07:07	17.4	0.1310537	0.1300963	0.0003191
EARTH	1976-07-04 02:16	7.2	0.0473894	0.0460641	0.0004418
EARTH	1979-07-05 06:38	13.4	0.0262095	0.0231660	0.0010145
EARTH	1982-07-01 17:08	88.8	0.1096684	0.1071828	0.0008285
EARTH	1985-06-22 08:03	143.8	0.1790833	0.1774224	0.0005537
VENUS	1985-10-30 22:14	41.8	0.0234281	0.0220493	0.0004661
VENUS	2001-06-18 03:37	36.2	0.0302157	0.0289106	0.0004353
EARTH	2003-04-23 01:12	141.1	0.1692592	0.1674757	0.0005952
EARTH	2006-04-15 07:28	60.4	0.1087531	0.1068831	0.0006289
EARTH	2009-04-13 17:50	4.9	0.0825792	0.0821609	0.0001584
EARTH	2012-04-15 06:37	32.7	0.1342482	0.1317548	0.0008366
EARTH	2019-07-01 03:41	17.1	0.1843623	0.1834642	0.0002993
EARTH	2022-07-03 18:05	8.2	0.0914168	0.0909222	0.0001649
VENUS	2024-11-02 20:17	22.4	0.0321308	0.0318252	0.0001019
EARTH	2025-07-04 23:24	< 1 s	0.0006251	0.0006241	0.0000003
EARTH	2027-04-22 21:43	6.6	0.1510211	0.1507990	0.0000741
VENUS	2032-10-29 24:00	109.6	0.0371725	0.0297549	0.0024772
EARTH	2035-04-27 04:50	220.5	0.1410958	0.1385396	0.0008572
EARTH	2038-07-03 15:59	125.1	0.0685245	0.0630358	0.0018296
EARTH	2046-07-01 02:22	67.4	0.1935934	0.1889221	0.0015571
EARTH	2048-04-22 01:15	51.7	0.1039101	0.1027718	0.0003839
EARTH	2051-06-29 07:09	105.1	0.1257874	0.1238752	0.0006374
VENUS	2059-01-19 15:47	39.6	0.0240211	0.0214244	0.0009136
EARTH	2059-07-03 23:45	22.5	0.1066855	0.1052397	0.0004820
EARTH	2061-04-20 13:52	6.4	0.0808179	0.0805409	0.0001239
VENUS	2061-09-29 11:19	73.6	0.0200778	0.0167918	0.0011005
EARTH	2064-06-22 12:42	114.3	0.1630161	0.1623859	0.0002101
EARTH	2072-07-03 01:04	20.7	0.1171373	0.1150151	0.0007074
EARTH	2074-04-21 03:07	9.9	0.0804645	0.0803620	0.0000342
VENUS	2075-08-30 05:22	47.0	0.0352040	0.0332201	0.0006690
EARTH	2077-06-25 19:57	207.6	0.1453472	0.1425869	0.0009202
EARTH	2085-07-01 11:51	66.1	0.1777304	0.1728689	0.0016205
EARTH	2087-04-23 06:46	80.8	0.1048603	0.1032528	0.0005435
EARTH	2090-07-02 04:39	143.9	0.0928213	0.0888209	0.0013335
VENUS	2096-08-01 02:35	66.7	0.0357279	0.0329868	0.0009235
VENUS	2099-04-11 03:48	41.1	0.0097035	0.0063473	0.0011770
EARTH	2100-04-26 09:54	133.1	0.1333845	0.1320679	0.0004406
EARTH	2103-07-03 17:35	367.8	0.0916058	0.0812005	0.0034689
EARTH	2111-07-04 07:23	479.3	0.1385987	0.1032686	0.0117771
VENUS	2111-07-30 04:56	773.5	0.0469144	0.0039363	0.0150675
EARTH	2113-04-21 21:46	222.3	0.0821370	0.0804434	0.0022974
EARTH	2116-06-24 15:55	> 1 d	0.1587519	0.1391456	0.0065404
EARTH	2124-07-05 05:59	229.4	0.0726606	0.0476327	0.0083440

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
244.09644759	180.69347676	0.00004259	MINIMUM
113.77446855	100.58732520	0.08102659	MINIMUM
177.92142378	140.27204429	0.25246180	SADDLE
356.89340730	317.96618950	0.58906392	SADDLE
357.17481427	138.48741817	1.41139851	SADDLE
179.37741399	321.11238006	2.24451698	MAXIMUM

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MOID Plots

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