Asteroids

2025WC help

Last update: 2025-11-17 13:45 UTC

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.750

Aphelion (Q)

1.419

Eccentricity (e)

0.309

Inclination (i)

8.0

deg

Orbit period (P)

412.4

Earth MOID

0.00046

U parameter

5.3

Next Earth close approach

Date

2027-05-14

Nominal distance (from Earth center)

0.11081

16577078

Maximum Brightness

28.1

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

29.5

mag

Diameter

3 - 7*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2025-11-16

Observatory

Pan-STARRS 2, Haleakala

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

1.084278

1-sigma variation

0.000012

Unit

Eccentricity (e)

Value

0.308682

1-sigma variation

0.000031

Unit

Inclination (i)

Value

7.9639

1-sigma variation

0.0007

Unit

Long. of Ascending Node (Ω)

Value

55.3756

1-sigma variation

2.988E-5

Unit

Arg. of Perihelion (ω)

Value

91.2227

1-sigma variation

0.0021

Unit

Mean Anomaly (M)

Value

306.47120

1-sigma variation

0.00182

Unit

Perihelion distance

Value

0.749580

1-sigma variation

Unit

Aphelion distance

Value

1.418975

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.001090

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.038293

1-sigma variation

Unit

MOID

Value

0.000459

1-sigma variation

Unit

Orbit Period

Value

412.3910

1-sigma variation

Unit

U parameter

Value

5.3

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.35665E-10	3.36301E-10	7.42783E-9	-2.02234E-10	1.77293E-8	2.11888E-8
e	3.36301E-10	9.71479E-10	2.05443E-8	-2.24700E-10	6.04940E-8	5.29932E-8
i	7.42783E-9	2.05443E-8	4.39807E-7	-6.83967E-9	1.22660E-6	1.16736E-6
Ω	-2.02234E-10	-2.24700E-10	-6.83967E-9	8.92563E-10	6.76375E-9	-3.06653E-8
ω	1.77293E-8	6.04940E-8	1.22660E-6	6.76375E-9	4.30306E-6	2.82525E-6
M	2.11888E-8	5.29932E-8	1.16736E-6	-3.06653E-8	2.82525E-6	3.31097E-6

Date of computation: 2025-11-17 13:45 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

29.495

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

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

0.8

Unit

Source

[1]

Unobserved

Value

Unit

Source

[1]

Normalized RMS of residuals

Value

0.774223

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2025-11-16.428538

Unit

Source

[2]

Last Observation

Value

2025-11-17.211306

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

28 (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 2025WC 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	1960-11-21 17:03	398.9	0.1378820	0.0496874	0.0294033
EARTH	1963-06-02 12:06	> 1 d	0.0508280	0.0408341	0.0097210
VENUS	1968-08-10 07:32	> 1 d	0.0409664	0.0381951	0.0016100
EARTH	1975-11-20 03:19	> 1 d	0.0477702	0.0017563	0.0486492
EARTH	1978-05-25 23:23	> 1 d	0.1186085	0.0463076	0.0384222
EARTH	1990-11-17 15:55	29.8	0.0061219	0.0049919	0.0003793
VENUS	1993-03-14 01:32	453.8	0.0461840	0.0453549	0.0002768
EARTH	1994-06-09 06:58	68.7	0.0759746	0.0736287	0.0007896
EARTH	2007-11-10 21:09	152.8	0.1743598	0.1662897	0.0026901
EARTH	2011-05-28 14:56	397.5	0.1174181	0.1101735	0.0024328
VENUS	2023-12-16 11:27	237.2	0.0463961	0.0459553	0.0001470
EARTH	2025-11-17 16:28	< 1 min	0.0006858	0.0006856	0.0000001
EARTH	2027-05-14 11:16	7.6	0.1108109	0.1106446	0.0000555
EARTH	2034-11-27 19:18	111.2	0.1420618	0.1393866	0.0008918
EARTH	2036-05-23 12:58	72.5	0.0306493	0.0284310	0.0007498
EARTH	2060-11-14 07:23	191.3	0.0714315	0.0630534	0.0027927
EARTH	2062-04-22 15:51	1408.3	0.1814433	0.1750190	0.0021483
EARTH	2069-11-17 12:00	242.7	0.0089406	0.0011016	0.0033819
EARTH	2071-04-20 14:04	> 1 d	0.1896402	0.1490146	0.0137209
EARTH	2081-06-01 14:35	> 1 w	0.1593923	0.0250263	0.1667114
EARTH	2088-11-17 03:17	> 1 w	0.0129106	0.0012650	0.2333469
EARTH	2098-11-21 05:47	> 1 mo	0.0638385	0.0006376	5.0786066
EARTH	2100-05-04 21:18	> 1 mo	0.1610327	0.0527746	4.4396094
EARTH	2108-11-27 13:16	> 1 mo	0.1523804	0.0071107	4.6488342
EARTH	2110-05-20 13:32	> 1 mo	0.0856917	0.0267834	4.1195757
EARTH	2120-05-25 07:34	> 1 w	0.0256564	0.0236624	0.1515380

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
286.62652127	314.58776571	0.00045905	MINIMUM
76.67836605	139.42339017	0.01632974	MINIMUM
2.13570603	47.29746754	0.26741936	SADDLE
181.20394505	226.70442135	0.43895724	SADDLE
2.93557166	228.36863489	1.75805089	SADDLE
181.62955549	47.00717524	2.40213707	MAXIMUM

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MOID Plots

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