Asteroids

2025WY2 help

Last update: 2025-11-28 13:01 UTC

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Aten

Perihelion (q)

0.491

Aphelion (Q)

1.028

Eccentricity (e)

0.354

Inclination (i)

8.5

deg

Orbit period (P)

241.7

Earth MOID

0.03750

U parameter

7.4

Next Earth close approach

Date

2027-12-10

Nominal distance (from Earth center)

0.03899

5832376

Maximum Brightness

21.1

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

26.2

mag

Diameter

15 - 30*

Taxonomic type

Rotation period (T)

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

0.759437

1-sigma variation

0.000116

Unit

Eccentricity (e)

Value

0.353814

1-sigma variation

0.000249

Unit

Inclination (i)

Value

8.4720

1-sigma variation

0.0085

Unit

Long. of Ascending Node (Ω)

Value

65.9101

1-sigma variation

0.0006

Unit

Arg. of Perihelion (ω)

Value

176.4425

1-sigma variation

0.0016

Unit

Mean Anomaly (M)

Value

175.11640

1-sigma variation

0.00257

Unit

Perihelion distance

Value

0.490737

1-sigma variation

Unit

Aphelion distance

Value

1.028137

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.040417

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.523875

1-sigma variation

Unit

MOID

Value

0.037501

1-sigma variation

Unit

Orbit Period

Value

241.7331

1-sigma variation

Unit

U parameter

Value

7.4

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.34275E-8	-2.88730E-8	-9.90143E-7	6.39332E-8	-1.53069E-7	2.31370E-7
e	-2.88730E-8	6.20856E-8	2.12913E-6	-1.37479E-7	3.28909E-7	-4.97044E-7
i	-9.90143E-7	2.12913E-6	7.30252E-5	-4.71681E-6	1.12345E-5	-1.69527E-5
Ω	6.39332E-8	-1.37479E-7	-4.71681E-6	3.05060E-7	-7.19990E-7	1.08304E-6
ω	-1.53069E-7	3.28909E-7	1.12345E-5	-7.19990E-7	2.41236E-6	-3.96476E-6
M	2.31370E-7	-4.97044E-7	-1.69527E-5	1.08304E-6	-3.96476E-6	6.62808E-6

Date of computation: 2025-11-28 13:01 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

26.189

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

15 - 30*

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

0.756018

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2025-11-24.382139

Unit

Source

[2]

Last Observation

Value

2025-11-28.386277

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

28 (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

Close Approaches for 2025WY2 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
MERCURY	1966-01-20 10:13	> 1 d	0.0454663	0.0198437	0.0446744
MERCURY	1968-09-09 13:25	> 1 w	0.0310051	0.0292578	0.0054771
MERCURY	1971-04-30 03:27	> 1 w	0.0379946	0.0129368	0.0304358
EARTH	1976-11-01 15:18	518.0	0.1901434	0.0916091	0.0362577
EARTH	1978-11-02 14:49	> 1 d	0.1131745	0.0614634	0.0309765
EARTH	1980-11-07 14:09	> 1 d	0.0607527	0.0517785	0.0154506
EARTH	1982-11-20 06:04	> 1 w	0.0446142	0.0440107	0.0032920
EARTH	1984-12-04 05:52	> 1 d	0.0375615	0.0372147	0.0029197
EARTH	1986-12-15 13:56	> 1 d	0.0519324	0.0407308	0.0197760
EARTH	1988-12-19 07:20	844.2	0.1140708	0.0498018	0.0345427
EARTH	1990-12-19 14:11	775.1	0.1960997	0.0877411	0.0384708
MERCURY	2010-05-14 14:02	> 1 d	0.0389030	0.0208019	0.0147872
MERCURY	2013-01-01 13:09	> 1 d	0.0305074	0.0266708	0.0017752
MERCURY	2015-08-22 10:29	> 1 d	0.0421348	0.0154935	0.0106737
EARTH	2019-11-02 08:00	31.5	0.1495258	0.1297385	0.0067091
EARTH	2021-11-04 05:16	414.5	0.0828056	0.0732144	0.0033884
EARTH	2023-11-13 06:59	546.8	0.0487856	0.0474792	0.0005167
EARTH	2025-11-26 18:41	< 1 min	0.0412260	0.0411284	0.0000325
EARTH	2027-12-10 20:32	518.8	0.0389870	0.0381000	0.0004118
EARTH	2029-12-18 03:20	356.3	0.0778100	0.0665111	0.0039479
EARTH	2031-12-20 07:53	29.6	0.1508474	0.1291351	0.0073238
MERCURY	2054-09-05 03:31	> 1 d	0.0325813	0.0229764	0.0148180
MERCURY	2057-04-24 09:40	> 1 w	0.0335890	0.0061981	0.0172544
EARTH	2060-11-01 17:46	392.7	0.1824756	0.0861372	0.0357285
EARTH	2062-11-02 23:15	> 1 d	0.1064383	0.0590831	0.0304849
EARTH	2064-11-08 09:06	> 1 d	0.0562063	0.0492786	0.0142050
EARTH	2066-11-21 16:34	> 1 w	0.0426489	0.0424203	0.0021749
EARTH	2068-12-05 19:29	> 1 w	0.0382064	0.0382016	0.0002313
EARTH	2070-12-16 13:34	> 1 d	0.0599437	0.0436791	0.0260425
EARTH	2072-12-19 13:52	665.4	0.1260346	0.0524475	0.0424317
MERCURY	2093-09-13 18:55	> 1 w	0.0435779	0.0178839	0.0627511
MERCURY	2096-05-03 15:08	> 1 w	0.0297247	0.0292673	0.0033441
MERCURY	2098-12-21 23:07	> 1 w	0.0404674	0.0124579	0.0565401
EARTH	2101-11-03 06:44	1049.1	0.1944422	0.0661204	0.0650040
EARTH	2103-11-04 00:51	> 1 d	0.1144720	0.0591550	0.0547706
EARTH	2105-11-08 20:52	> 1 d	0.0578897	0.0489684	0.0267965
EARTH	2107-11-21 20:30	> 1 w	0.0423643	0.0422397	0.0025196
EARTH	2109-12-06 07:18	> 1 w	0.0388278	0.0388217	0.0004575
EARTH	2111-12-17 12:44	> 1 d	0.0589526	0.0443197	0.0344952
EARTH	2113-12-20 19:22	958.9	0.1249746	0.0534172	0.0551363

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
197.97260547	333.84927968	0.03750057	MINIMUM
3.23710271	144.53476350	0.52384847	SADDLE
3.07343316	324.32767784	1.47776463	SADDLE
181.61615139	142.78624852	2.04255268	MAXIMUM

Download:

MOID Plots

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