Asteroids

2025XM help

Last update: 2025-12-10 13:00 UTC

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.676

Aphelion (Q)

1.570

Eccentricity (e)

0.398

Inclination (i)

6.6

deg

Orbit period (P)

434.6

Earth MOID

0.00136

U parameter

6.3

Next Earth close approach

Date

2027-06-12

Nominal distance (from Earth center)

0.16998

25428826

Maximum Brightness

25.2

mag

Risk

Object is in risk list

Physical Properties

Absolute Magnitude (H)

25.6

mag

Diameter

20 - 40*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2025-12-08

Observatory

ATLAS Chile, Rio Hurtado

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

1.122945

1-sigma variation

0.000061

Unit

Eccentricity (e)

Value

0.397835

1-sigma variation

0.000066

Unit

Inclination (i)

Value

6.5576

1-sigma variation

0.0012

Unit

Long. of Ascending Node (Ω)

Value

77.9533

1-sigma variation

1.400E-5

Unit

Arg. of Perihelion (ω)

Value

95.0798

1-sigma variation

0.0002

Unit

Mean Anomaly (M)

Value

294.55787

1-sigma variation

0.00845

Unit

Perihelion distance

Value

0.676199

1-sigma variation

Unit

Aphelion distance

Value

1.569691

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.005000

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.103810

1-sigma variation

Unit

MOID

Value

0.001361

1-sigma variation

Unit

Orbit Period

Value

434.6464

1-sigma variation

Unit

U parameter

Value

6.3

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	3.72596E-9	4.00950E-9	7.03432E-8	8.23686E-10	7.24893E-9	5.15988E-7
e	4.00950E-9	4.31581E-9	7.57280E-8	8.85143E-10	7.94200E-9	5.55270E-7
i	7.03432E-8	7.57280E-8	1.32929E-6	1.54574E-8	1.40670E-7	9.74188E-6
Ω	8.23686E-10	8.85143E-10	1.54574E-8	1.95991E-10	1.44514E-9	1.14052E-7
ω	7.24893E-9	7.94200E-9	1.40670E-7	1.44514E-9	3.08298E-8	1.00574E-6
M	5.15988E-7	5.55270E-7	9.74188E-6	1.14052E-7	1.00574E-6	7.14567E-5

Date of computation: 2025-12-10 13:00 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

25.619

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

20 - 40*

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

0.569736

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2025-12-05.294289

Unit

Source

[2]

Last Observation

Value

2025-12-09.55005

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

44 (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

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 2025XM 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	1951-06-17 17:11	> 1 d	0.1052911	0.0381324	0.0248421
EARTH	1964-06-30 15:51	> 1 d	0.1516046	0.0607289	0.0313248
VENUS	1980-12-27 00:42	926.4	0.0305866	0.0292949	0.0013033
EARTH	1981-12-12 15:18	232.1	0.0715389	0.0601010	0.0038127
EARTH	1983-06-24 17:34	146.2	0.0318000	0.0299451	0.0007526
EARTH	2000-12-16 04:18	979.7	0.1340939	0.0970060	0.0123670
EARTH	2002-06-28 03:03	849.5	0.0901574	0.0568870	0.0115111
VENUS	2016-07-17 07:40	> 1 d	0.0397823	0.0342152	0.0023184
EARTH	2025-12-09 07:51	< 1 s	0.0031700	0.0031684	0.0000005
EARTH	2027-06-12 18:52	84.1	0.1699812	0.1685616	0.0004734
EARTH	2034-06-29 01:45	277.8	0.0690932	0.0592377	0.0033841
VENUS	2044-10-28 08:59	1414.9	0.0337848	0.0336497	0.0006102
EARTH	2052-12-06 01:19	1397.0	0.0732325	0.0064947	0.0222613
EARTH	2059-12-17 20:21	1254.5	0.1515571	0.0934424	0.0193745
EARTH	2061-06-24 23:18	1299.5	0.0397914	0.0353980	0.0073149
EARTH	2068-07-05 07:49	1080.7	0.1956629	0.1462849	0.0165645
VENUS	2069-07-20 02:32	> 1 d	0.0483998	0.0255486	0.0099565
VENUS	2082-05-06 15:36	752.2	0.0399897	0.0343294	0.0026507
EARTH	2086-12-04 22:57	19.4	0.1102270	0.1094058	0.0002739
EARTH	2093-12-11 06:26	487.5	0.0348977	0.0129392	0.0073211
EARTH	2095-06-17 02:36	728.8	0.1410165	0.1245565	0.0055187
EARTH	2102-06-29 14:04	146.2	0.0567662	0.0513889	0.0018543
VENUS	2118-10-12 23:54	> 1 d	0.0375632	0.0258502	0.0078825

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
288.03576118	336.35828256	0.00136114	MINIMUM
75.33796407	170.73865941	0.02984993	MINIMUM
2.52303102	74.21370983	0.33277447	SADDLE
181.06129671	253.07160519	0.58161903	SADDLE
3.13197875	255.12795175	1.67924453	SADDLE
181.46737624	73.33468043	2.56126783	MAXIMUM

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MOID Plots

Click on the images to zoom-in and zoom-out

Level lines of the squared distance function

2025XM

Date in UTC	MJD	σ	Distance ± Width in RE	Stretching in RE	IP	Impact energy	PS
2067-12-10.092	76359.092	3.746	0.93 ± 0.000	3.17E5	2.54E-9	8.63E-1	-8.75
2069-12-09.674	77089.674	4.016	0.97 ± 0.001	1.27E6	1.83E-10	8.66E-1	-9.91
2069-12-09.684	77089.684	4.088	1.23 ± 0.001	3.21E5	3.21E-10	8.67E-1	-9.66
2075-12-10.180	79281.180	3.797	0.88 ± 0.001	3.77E5	2.08E-9	8.65E-1	-8.91
2077-12-09.680	80011.680	4.292	0.82 ± 0.000	3.20E5	3.25E-10	8.67E-1	-9.73
2081-12-09.577	81472.577	3.634	0.36 ± 0.000	4.80E5	2.95E-9	8.63E-1	-8.81
2092-12-09.431	85490.431	3.807	0.44 ± 0.000	3.45E7	2.10E-11	8.63E-1	-11.03


Based on 44 optical observations (of which 1 are rejected as outliers) from 2025/12/05.294 to 2025/12/09.550.
Coordinates are given on the Target Plane.
Unit is one Earth radius, but impact cross section has radius between 1.34 and 1.34 Earth radii.
Coordinates for LOV = EQU scaled= 1 second= F.
Aegis software version= 5.0, Date of computation=20251210 142247.050 UTC.

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