Asteroids

2025WN1 help

Last update: 2026-03-17 23:26 UTC

Orbital Properties

Epoch

61200.0

MJD

Orbit type

Aten

Perihelion (q)

0.769

Aphelion (Q)

1.008

Eccentricity (e)

0.134

Inclination (i)

2.6

deg

Orbit period (P)

306.0

Earth MOID

0.00687

U parameter

5.5

Next Earth close approach

Date

2030-10-14

Nominal distance (from Earth center)

0.10262

15351679

Maximum Brightness

23.2

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

24.6

mag

Diameter

30 - 70*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2025-11-21

Observatory

ATLAS South Africa, Sutherland

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

0.888619

1-sigma variation

0.000011

Unit

Eccentricity (e)

Value

0.134365

1-sigma variation

0.000016

Unit

Inclination (i)

Value

2.6482

1-sigma variation

0.0003

Unit

Long. of Ascending Node (Ω)

Value

95.7756

1-sigma variation

0.0003

Unit

Arg. of Perihelion (ω)

Value

137.5438

1-sigma variation

0.0010

Unit

Mean Anomaly (M)

Value

62.66392

1-sigma variation

0.00358

Unit

Perihelion distance

Value

0.769219

1-sigma variation

Unit

Aphelion distance

Value

1.008018

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.014990

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.222841

1-sigma variation

Unit

MOID

Value

0.006875

1-sigma variation

Unit

Orbit Period

Value

305.9649

1-sigma variation

Unit

U parameter

Value

5.5

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.13833E-10	-1.70014E-10	-3.21742E-9	2.78841E-9	-1.06694E-8	-3.81851E-8
e	-1.70014E-10	2.53928E-10	4.80582E-9	-4.16661E-9	1.59349E-8	5.70341E-8
i	-3.21742E-9	4.80582E-9	9.10051E-8	-7.91939E-8	3.01701E-7	1.07961E-6
Ω	2.78841E-9	-4.16661E-9	-7.91939E-8	7.12748E-8	-2.63167E-7	-9.36904E-7
ω	-1.06694E-8	1.59349E-8	3.01701E-7	-2.63167E-7	1.00221E-6	3.57855E-6
M	-3.81851E-8	5.70341E-8	1.07961E-6	-9.36904E-7	3.57855E-6	1.28118E-5

Date of computation: 2026-03-17 23:26 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

24.627

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

30 - 70*

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

163

Unit

Source

[1]

Normalized RMS of residuals

Value

0.377091

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2025-11-21.923244

Unit

Source

[2]

Last Observation

Value

2025-12-22.08592

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

77 (2)

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 2025WN1 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	1952-08-21 13:31	> 1 d	0.1431449	0.1403978	0.0009160
EARTH	1952-12-23 01:45	343.9	0.0142516	0.0112268	0.0011193
VENUS	1955-10-17 13:57	598.6	0.0439620	0.0435174	0.0001612
EARTH	1957-10-13 07:26	61.1	0.0691542	0.0667856	0.0007982
EARTH	1958-02-28 01:19	> 1 d	0.1679210	0.1662541	0.0005557
EARTH	1973-08-12 13:45	244.4	0.1628592	0.1626402	0.0000730
EARTH	1973-12-27 06:33	3.4	0.0439750	0.0435193	0.0001519
EARTH	1978-10-17 00:52	48.3	0.0487306	0.0483750	0.0001199
EARTH	1979-02-16 15:18	760.9	0.1512513	0.1507015	0.0001833
EARTH	1994-07-26 05:48	505.2	0.1901280	0.1897794	0.0001163
EARTH	1994-12-28 09:32	8.5	0.1068675	0.1059251	0.0003141
EARTH	1999-10-31 00:16	64.9	0.0403191	0.0403123	0.0000025
EARTH	2020-08-12 13:20	945.6	0.1650063	0.1642550	0.0002508
EARTH	2020-12-26 22:25	19.0	0.0578055	0.0562108	0.0005316
EARTH	2025-12-03 04:40	< 1 min	0.0284368	0.0284275	0.0000031
EARTH	2030-10-14 15:48	5.6	0.1026196	0.1011730	0.0004830
EARTH	2031-03-10 14:25	940.3	0.1826329	0.1819871	0.0002153
EARTH	2046-12-25 12:35	21.0	0.1848923	0.1818301	0.0010207
EARTH	2051-12-17 16:56	392.2	0.0112620	0.0097233	0.0005248
EARTH	2062-07-17 05:29	> 1 w	0.1930589	0.1795082	0.0047349
EARTH	2062-12-25 11:32	293.6	0.1380859	0.0937966	0.0147631
EARTH	2067-10-12 14:02	214.2	0.1413732	0.0944434	0.0161439
EARTH	2068-03-21 08:16	> 1 w	0.1959593	0.1795820	0.0054641
EARTH	2078-10-27 19:38	> 1 d	0.0444706	0.0436802	0.0013037
EARTH	2089-10-16 18:24	> 1 d	0.0509638	0.0457813	0.0044152
EARTH	2090-02-13 07:16	> 1 w	0.1444232	0.1234190	0.0070641
EARTH	2106-08-11 07:07	> 1 d	0.1576836	0.1521681	0.0018673
EARTH	2106-12-27 09:58	162.3	0.0410010	0.0339068	0.0023685
EARTH	2117-07-22 02:58	> 1 w	0.1886344	0.1717744	0.0059855
EARTH	2117-12-27 11:34	304.3	0.1227640	0.0639226	0.0196191
EARTH	2122-10-15 03:54	199.8	0.1692110	0.1126739	0.0192932

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
219.06584711	347.40643796	0.00691611	MINIMUM
4.77360884	137.43664566	0.24882968	SADDLE
5.89100826	318.76221061	1.75371218	SADDLE
185.06128493	137.92919880	2.02062691	MAXIMUM

Download:

MOID Plots

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