Asteroids

2025MB help

Last update: 2026-07-30 14:25 UTC

Orbital Properties

Epoch

61200.0

MJD

Orbit type

Apollo

Perihelion (q)

0.918

Aphelion (Q)

1.558

Eccentricity (e)

0.259

Inclination (i)

5.6

deg

Orbit period (P)

502.9

Earth MOID

0.00097

U parameter

6.2

Next Earth close approach

Date

2036-07-10

Nominal distance (from Earth center)

0.08396

12560865

Maximum Brightness

29.7

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

29.7

mag

Diameter

3 - 7*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2025-06-16

Observatory

Kitt Peak-Bok

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

1.237669

1-sigma variation

0.000066

Unit

Eccentricity (e)

Value

0.258601

1-sigma variation

0.000061

Unit

Inclination (i)

Value

5.6231

1-sigma variation

0.0005

Unit

Long. of Ascending Node (Ω)

Value

87.3003

1-sigma variation

0.0001

Unit

Arg. of Perihelion (ω)

Value

237.4412

1-sigma variation

0.0026

Unit

Mean Anomaly (M)

Value

219.31543

1-sigma variation

0.01762

Unit

Perihelion distance

Value

0.917606

1-sigma variation

Unit

Aphelion distance

Value

1.557731

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.357209

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.002168

1-sigma variation

Unit

MOID

Value

0.000965

1-sigma variation

Unit

Orbit Period

Value

502.9271

1-sigma variation

Unit

U parameter

Value

6.2

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	4.40991E-9	4.06166E-9	3.17256E-8	5.26617E-9	1.70391E-7	-1.16974E-6
e	4.06166E-9	3.74171E-9	2.91930E-8	4.86358E-9	1.57164E-7	-1.07748E-6
i	3.17256E-8	2.91930E-8	2.29420E-7	3.73624E-8	1.21800E-6	-8.41159E-6
Ω	5.26617E-9	4.86358E-9	3.73624E-8	6.53364E-9	2.07294E-7	-1.39868E-6
ω	1.70391E-7	1.57164E-7	1.21800E-6	2.07294E-7	6.64965E-6	-4.52279E-5
M	-1.16974E-6	-1.07748E-6	-8.41159E-6	-1.39868E-6	-4.52279E-5	3.10293E-4

Date of computation: 2026-07-30 14:25 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

29.745

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

3 - 7*

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

423

Unit

Source

[1]

Normalized RMS of residuals

Value

0.696554

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2025-06-16.294549

Unit

Source

[2]

Last Observation

Value

2025-06-17.970708

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

46 (4)

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

Filters

Initial Date: *

Final Date: *

Normalised Only accepted

Max residual (arcsec):

* - these fields are required

Plot

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 2025MB 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	1951-06-12 18:35	> 1 mo	0.0646674	0.0031312	23.0321386
EARTH	1960-10-30 01:09	> 1 mo	0.0609953	0.0597975	2.2305370
EARTH	1973-09-04 22:26	> 1 mo	0.1353404	0.1211999	1.3842302
EARTH	1986-07-04 13:00	> 1 mo	0.0771426	0.0106348	9.4084427
EARTH	1995-11-11 16:36	> 1 mo	0.1878167	0.0590155	1.9906699
EARTH	1999-06-15 16:42	> 1 mo	0.0317633	0.0014195	1.9867885
EARTH	2008-10-12 13:38	> 1 mo	0.1037282	0.0556514	0.8102192
EARTH	2021-06-18 13:31	374.0	0.0025547	0.0008725	0.0020221
EARTH	2025-06-18 05:45	< 1 s	0.0009020	0.0009014	0.0000002
EARTH	2036-07-10 02:23	> 1 d	0.0839642	0.0729391	0.0036942
EARTH	2047-08-31 10:58	> 1 d	0.1246325	0.1234076	0.0004962
EARTH	2058-10-17 01:54	1038.8	0.0923348	0.0907266	0.0015267
EARTH	2076-06-07 22:20	1164.0	0.1146013	0.0753333	0.0130933
EARTH	2087-06-22 23:51	> 1 d	0.0261639	0.0073089	0.0062875
EARTH	2098-10-15 16:23	> 1 d	0.0907446	0.0905909	0.0029828
EARTH	2105-06-04 23:05	> 1 d	0.1849543	0.0062994	0.1052373
EARTH	2116-07-29 13:33	> 1 mo	0.1102029	0.0603080	0.0654375

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
313.93162161	162.07678866	0.00096538	MINIMUM
45.15336630	278.26906245	0.09085973	MINIMUM
5.85471834	228.64248801	0.12570365	SADDLE
180.17125124	39.94922047	0.57951738	SADDLE
358.11492262	38.38706938	1.90324582	SADDLE
178.17944933	218.42023785	2.56868590	MAXIMUM

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MOID Plots

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