Asteroids

2025WA3 help

Last update: 2026-02-21 13:16 UTC

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.565

Aphelion (Q)

2.646

Eccentricity (e)

0.648

Inclination (i)

6.3

deg

Orbit period (P)

743.0

Earth MOID

0.00522

U parameter

7.4

Next Earth close approach

Date

2038-06-14

Nominal distance (from Earth center)

0.17987

26907548

Maximum Brightness

20.2

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

20.7

mag

Diameter

190 - 400*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2025-11-23

Observatory

Purple Mountain Observatory, XuYi Station

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

1.605382

1-sigma variation

0.000630

Unit

Eccentricity (e)

Value

0.648298

1-sigma variation

0.000187

Unit

Inclination (i)

Value

6.2792

1-sigma variation

0.0021

Unit

Long. of Ascending Node (Ω)

Value

79.9140

1-sigma variation

0.0003

Unit

Arg. of Perihelion (ω)

Value

97.6150

1-sigma variation

0.0008

Unit

Mean Anomaly (M)

Value

324.29539

1-sigma variation

0.02447

Unit

Perihelion distance

Value

0.564616

1-sigma variation

Unit

Aphelion distance

Value

2.646148

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.033784

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.160153

1-sigma variation

Unit

MOID

Value

0.005216

1-sigma variation

Unit

Orbit Period

Value

742.9611

1-sigma variation

Unit

U parameter

Value

7.4

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	3.97134E-7	1.18144E-7	1.29726E-6	-2.03787E-7	5.00904E-7	1.54188E-5
e	1.18144E-7	3.51467E-8	3.85923E-7	-6.06252E-8	1.49023E-7	4.58695E-6
i	1.29726E-6	3.85923E-7	4.23768E-6	-6.65684E-7	1.63643E-6	5.03663E-5
Ω	-2.03787E-7	-6.06252E-8	-6.65684E-7	1.04597E-7	-2.57119E-7	-7.91208E-6
ω	5.00904E-7	1.49023E-7	1.63643E-6	-2.57119E-7	6.33357E-7	1.94477E-5
M	1.54188E-5	4.58695E-6	5.03663E-5	-7.91208E-6	1.94477E-5	5.98638E-4

Date of computation: 2026-02-21 13:16 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

20.703

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

190 - 400*

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

Unit

Source

[1]

Normalized RMS of residuals

Value

0.511348

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2025-11-23.752126

Unit

Source

[2]

Last Observation

Value

2025-12-16.71315

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

365 (5)

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 2025WA3 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
VENUS	1956-10-26 15:47	> 1 d	0.0183551	0.0169356	0.0059172
EARTH	1966-12-10 04:49	> 1 d	0.0854507	0.0023920	0.0812074
EARTH	1968-12-22 11:16	> 1 d	0.1430887	0.0003975	0.0872789
EARTH	1981-06-19 12:42	> 1 d	0.1081436	0.0277466	0.0786994
EARTH	1983-07-02 07:01	> 1 d	0.1160953	0.0269012	0.0709718
VENUS	2003-10-14 19:15	> 1 w	0.0370762	0.0140836	0.0721007
EARTH	2023-12-05 18:48	489.7	0.1917258	0.1692903	0.0074787
EARTH	2025-12-15 21:28	< 1 s	0.0227617	0.0227410	0.0000069
EARTH	2038-06-14 09:10	> 1 d	0.1798658	0.0766177	0.0353141
EARTH	2040-06-28 15:43	> 1 d	0.0577273	0.0289349	0.0351864
EARTH	2078-12-06 13:09	> 1 d	0.1783683	0.0841979	0.0314111
EARTH	2080-12-17 11:46	> 1 d	0.0510056	0.0067621	0.0342832
EARTH	2093-06-20 09:21	403.9	0.1094532	0.0982922	0.0037426
EARTH	2095-07-04 12:56	95.7	0.1444603	0.1389053	0.0018539

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
306.57315621	341.61963447	0.00521594	MINIMUM
55.32812951	173.25094961	0.02890595	MINIMUM
1.70167072	78.24888269	0.43981992	SADDLE
1.93966234	258.75197737	1.56696361	SADDLE
180.36066839	256.80361380	1.65091705	SADDLE
180.45839088	76.84619269	3.63857157	MAXIMUM

Download:

MOID Plots

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