Asteroids

2025XN help

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

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.447

Aphelion (Q)

2.339

Eccentricity (e)

0.679

Inclination (i)

3.0

deg

Orbit period (P)

600.6

Earth MOID

0.00095

U parameter

7.8

Next Earth close approach

Date

2027-05-01

Nominal distance (from Earth center)

0.14112

21110859

Maximum Brightness

27.8

mag

Risk

Object is in risk list

Physical Properties

Absolute Magnitude (H)

29.3

mag

Diameter

4 - 8*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2025-12-08

Observatory

JPL SynTrack Robotic Telescope, Auberry

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

1.393098

1-sigma variation

0.001023

Unit

Eccentricity (e)

Value

0.679109

1-sigma variation

0.000355

Unit

Inclination (i)

Value

2.9804

1-sigma variation

0.0024

Unit

Long. of Ascending Node (Ω)

Value

256.1938

1-sigma variation

0.0002

Unit

Arg. of Perihelion (ω)

Value

68.4710

1-sigma variation

0.0008

Unit

Mean Anomaly (M)

Value

19.46109

1-sigma variation

0.03165

Unit

Perihelion distance

Value

0.447032

1-sigma variation

Unit

Aphelion distance

Value

2.339163

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.415929

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.015545

1-sigma variation

Unit

MOID

Value

0.000946

1-sigma variation

Unit

Orbit Period

Value

600.5800

1-sigma variation

Unit

U parameter

Value

7.8

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.04600E-6	3.62847E-7	2.45054E-6	-2.25667E-7	3.57125E-7	-3.23687E-5
e	3.62847E-7	1.25902E-7	8.49413E-7	-7.82787E-8	1.19629E-7	-1.12294E-5
i	2.45054E-6	8.49413E-7	5.76234E-6	-5.29442E-7	9.21410E-7	-7.58129E-5
Ω	-2.25667E-7	-7.82787E-8	-5.29442E-7	4.87959E-8	-7.75690E-8	6.98325E-6
ω	3.57125E-7	1.19629E-7	9.21410E-7	-7.75690E-8	6.70293E-7	-1.09247E-5
M	-3.23687E-5	-1.12294E-5	-7.58129E-5	6.98325E-6	-1.09247E-5	1.00169E-3

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

29.262

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

4 - 8*

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

0.672392

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2025-12-08.175427

Unit

Source

[2]

Last Observation

Value

2025-12-10.36564

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

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 2025XN 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	1951-12-06 20:31	> 1 w	0.0110018	0.0025512	0.2226611
EARTH	1953-04-21 08:42	> 1 w	0.0467984	0.0371216	0.1452330
EARTH	1974-12-11 14:58	> 1 w	0.0992021	0.0018658	0.4681435
EARTH	1976-04-26 07:58	> 1 w	0.0908565	0.0368192	0.4181355
VENUS	2002-11-09 14:06	> 1 d	0.0344718	0.0340986	0.0198816
EARTH	2002-12-01 06:35	> 1 d	0.1429267	0.0010575	0.1166682
EARTH	2004-04-15 22:09	> 1 d	0.1556435	0.0366061	0.1053550
EARTH	2025-12-07 11:32	< 1 min	0.0016758	0.0016725	0.0000011
EARTH	2027-05-01 06:13	770.2	0.1411174	0.1069360	0.0115327
EARTH	2030-12-12 06:17	> 1 d	0.1037336	0.0031547	0.0335462
VENUS	2047-06-22 15:56	> 1 d	0.0365556	0.0235969	0.0907081
VENUS	2064-05-19 00:23	> 1 d	0.0479060	0.0338384	0.0888150
EARTH	2089-04-19 21:57	902.1	0.1201732	0.0770800	0.0147506
EARTH	2092-12-02 12:12	226.2	0.1181467	0.1015592	0.0055299
EARTH	2094-04-26 19:27	878.9	0.0476043	0.0351459	0.0080852
EARTH	2097-12-09 11:51	> 1 d	0.0342850	0.0005384	0.0324887
EARTH	2099-05-04 22:56	> 1 d	0.1999567	0.1147476	0.0287401
VENUS	2112-12-25 10:07	810.8	0.0479937	0.0325080	0.0097672

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
64.46679572	334.32635263	0.00094649	MINIMUM
294.23563341	110.60406789	0.03604002	MINIMUM
358.50320436	221.38916790	0.56746122	SADDLE
179.73443612	42.92679033	1.35300822	SADDLE
358.48044573	41.29626944	1.43466651	SADDLE
179.66648090	222.88992942	3.35176126	MAXIMUM

Download:

MOID Plots

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

Level lines of the squared distance function

2025XN

Date in UTC	MJD	σ	σ_imp	Distance ± Width in RE	Stretching in RE	IP	Impact energy	PS	TS
2058-12-07.952	73069.952	-3.183	0.000	0.08 ± 0.000	1.20E6	4.69E-9	1.26E-2	-9.84	0


Based on 21 optical observations (of which 0 are rejected as outliers) from 2025/12/08.175 to 2025/12/10.366.
Coordinates are given on the Target Plane.
Unit is one Earth radius, but impact cross section has radius between 1.12 and 1.12 Earth radii.
Coordinates for LOV = EQU scaled= 1 second= F.
Aegis software version= 5.0, Date of computation=20251210 141930.564 UTC.

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Download Impactor Table as: