Asteroids

2025SH help

Last update: 2025-09-24 14:14 UTC

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.981

Aphelion (Q)

1.434

Eccentricity (e)

0.188

Inclination (i)

3.0

deg

Orbit period (P)

484.5

Earth MOID

0.00348

U parameter

7.7

Next Earth close approach

Date

2025-10-02

Nominal distance (from Earth center)

0.0093

1391533

Maximum Brightness

19.6

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

27.4

mag

Diameter

9 - 20*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2025-09-16

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

61000.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

1.207188

1-sigma variation

0.000600

Unit

Eccentricity (e)

Value

0.187622

1-sigma variation

0.000413

Unit

Inclination (i)

Value

2.9898

1-sigma variation

0.0043

Unit

Long. of Ascending Node (Ω)

Value

196.1540

1-sigma variation

0.0078

Unit

Arg. of Perihelion (ω)

Value

203.9658

1-sigma variation

0.0237

Unit

Mean Anomaly (M)

Value

15.96705

1-sigma variation

0.00361

Unit

Perihelion distance

Value

0.980693

1-sigma variation

Unit

Aphelion distance

Value

1.433683

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.403727

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.004882

1-sigma variation

Unit

MOID

Value

0.003484

1-sigma variation

Unit

Orbit Period

Value

484.4633

1-sigma variation

Unit

U parameter

Value

7.7

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	3.60464E-7	2.47827E-7	2.53671E-6	3.81357E-6	-1.36033E-5	2.00839E-6
e	2.47827E-7	1.70418E-7	1.74684E-6	2.59630E-6	-9.31373E-6	1.37319E-6
i	2.53671E-6	1.74684E-6	1.80970E-5	2.45894E-5	-9.23253E-5	1.34658E-5
Ω	3.81357E-6	2.59630E-6	2.45894E-5	6.09641E-5	-1.75146E-4	2.73691E-5
ω	-1.36033E-5	-9.31373E-6	-9.23253E-5	-1.75146E-4	5.60677E-4	-8.50735E-5
M	2.00839E-6	1.37319E-6	1.34658E-5	2.73691E-5	-8.50735E-5	1.30132E-5

Date of computation: 2025-09-24 14:14 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

27.364

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

9 - 20*

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

0.432094

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2025-09-16.185629

Unit

Source

[2]

Last Observation

Value

2025-09-23.79175

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

21 (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 2025SH 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	1951-10-10 07:47	> 1 mo	0.0044592	0.0041987	0.0526848
EARTH	1955-12-07 08:37	> 1 mo	0.1023235	0.0352112	0.3498086
EARTH	1990-09-13 20:05	> 1 d	0.1017023	0.0156187	0.0987912
EARTH	1994-11-02 14:49	> 1 mo	0.0218059	0.0171628	0.0355131
EARTH	2025-10-02 08:54	2.3	0.0093018	0.0092441	0.0000193
EARTH	2029-09-09 15:52	> 1 d	0.1445900	0.0898417	0.0183225
EARTH	2066-12-17 18:09	> 1 d	0.1931419	0.0439245	0.1262870
EARTH	2070-11-28 20:20	> 1 w	0.0511713	0.0344154	0.0785925
EARTH	2074-10-20 20:25	> 1 w	0.0162625	0.0064795	0.0094393
EARTH	2078-11-16 07:46	> 1 mo	0.0332214	0.0277674	0.0673126
EARTH	2082-12-12 13:52	> 1 w	0.1405185	0.0401018	0.4188534
EARTH	2121-09-07 03:18	> 1 mo	0.1935222	0.0154680	1.4351676
EARTH	2125-09-22 11:22	> 1 mo	0.0453589	0.0054306	1.2164196

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
337.77255923	273.08859157	0.00348367	MINIMUM
177.39085131	116.00618166	0.42567315	SADDLE
355.25375244	113.98739168	1.98904269	SADDLE
176.64024465	295.39188515	2.42641749	MAXIMUM

Download:

MOID Plots

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