Asteroids

2025WW13 help

Last update: 2025-12-08 12:45 UTC

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.770

Aphelion (Q)

1.339

Eccentricity (e)

0.270

Inclination (i)

2.9

deg

Orbit period (P)

395.4

Earth MOID

0.00232

U parameter

7.3

Next Earth close approach

Date

2038-11-16

Nominal distance (from Earth center)

0.19364

28968297

Maximum Brightness

24.8

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

26.5

mag

Diameter

13 - 30*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2025-11-29

Observatory

Mt. Lemmon Survey

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

1.054316

1-sigma variation

0.000224

Unit

Eccentricity (e)

Value

0.269929

1-sigma variation

0.000453

Unit

Inclination (i)

Value

2.9344

1-sigma variation

0.0053

Unit

Long. of Ascending Node (Ω)

Value

251.2052

1-sigma variation

0.0024

Unit

Arg. of Perihelion (ω)

Value

274.4486

1-sigma variation

0.0079

Unit

Mean Anomaly (M)

Value

283.86323

1-sigma variation

0.04813

Unit

Perihelion distance

Value

0.769726

1-sigma variation

Unit

Aphelion distance

Value

1.338906

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.058041

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.012313

1-sigma variation

Unit

MOID

Value

0.002317

1-sigma variation

Unit

Orbit Period

Value

395.4163

1-sigma variation

Unit

U parameter

Value

7.3

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	5.03644E-8	1.01740E-7	1.18716E-6	-5.27794E-7	1.76646E-6	1.08008E-5
e	1.01740E-7	2.05573E-7	2.39882E-6	-1.06656E-6	3.57405E-6	2.18188E-5
i	1.18716E-6	2.39882E-6	2.79926E-5	-1.24464E-5	4.17162E-5	2.54593E-4
Ω	-5.27794E-7	-1.06656E-6	-1.24464E-5	5.53488E-6	-1.85562E-5	-1.13189E-4
ω	1.76646E-6	3.57405E-6	4.17162E-5	-1.85562E-5	6.26229E-5	3.78849E-4
M	1.08008E-5	2.18188E-5	2.54593E-4	-1.13189E-4	3.78849E-4	2.31627E-3

Date of computation: 2025-12-08 12:45 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

26.486

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

13 - 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

0.413713

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2025-11-29.24186

Unit

Source

[2]

Last Observation

Value

2025-12-07.135851

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

22 (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 2025WW13 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	1960-11-23 06:11	> 1 w	0.1745074	0.0815479	0.0312372
EARTH	1961-01-13 09:02	> 1 w	0.1637584	0.0968396	0.0224433
EARTH	1962-05-18 03:04	> 1 w	0.1458336	0.0660826	0.0273096
EARTH	1975-06-13 06:55	167.0	0.0318661	0.0192351	0.0043647
EARTH	1988-06-11 10:44	> 1 d	0.0497929	0.0112583	0.0388072
EARTH	1999-11-25 20:24	> 1 d	0.1681377	0.1478935	0.0067523
EARTH	2000-01-10 23:58	> 1 d	0.1598426	0.1444034	0.0051510
EARTH	2001-05-03 22:49	> 1 d	0.1712743	0.1677530	0.0011779
EARTH	2001-06-29 19:49	1308.0	0.1867962	0.1808614	0.0019788
EARTH	2012-12-08 10:30	> 1 d	0.0508913	0.0020260	0.0245230
EARTH	2025-12-07 08:51	< 1 min	0.0254062	0.0252733	0.0000443
EARTH	2038-11-16 02:17	> 1 w	0.1936411	0.1394592	0.0181178
EARTH	2039-01-20 16:03	> 1 w	0.1769684	0.1403234	0.0122498
EARTH	2040-05-30 02:59	> 1 d	0.1229349	0.0561379	0.0225729
EARTH	2050-11-27 17:24	> 1 d	0.1868778	0.0992382	0.0292137
EARTH	2053-06-15 00:08	> 1 d	0.0267711	0.0104804	0.0235850
EARTH	2063-12-26 17:06	> 1 mo	0.1328053	0.0099280	0.1129431
EARTH	2065-05-09 10:37	> 1 mo	0.1588552	0.0391482	0.0937976
EARTH	2075-12-03 23:54	> 1 w	0.0700286	0.0033672	0.2619554
EARTH	2078-06-21 23:52	> 1 w	0.1555802	0.0112177	0.2108242
EARTH	2088-11-15 19:36	> 1 w	0.1946756	0.1184615	0.0257005
EARTH	2089-01-21 12:13	> 1 w	0.1774665	0.1295470	0.0160226
EARTH	2090-06-03 20:20	> 1 w	0.1123130	0.0112944	0.0635354
EARTH	2100-12-03 16:01	> 1 w	0.0845027	0.0029397	0.2875793
EARTH	2103-06-22 12:17	> 1 w	0.1363521	0.0124607	0.2722921
EARTH	2113-12-29 04:19	> 1 mo	0.1358967	0.0081294	0.1360625
EARTH	2115-05-08 09:51	> 1 mo	0.1641808	0.0416335	0.0776751
EARTH	2115-06-25 14:37	> 1 mo	0.1780774	0.0027415	0.1152271
EARTH	2125-11-29 20:45	> 1 d	0.1755059	0.0047770	0.0732938

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
283.91663067	332.99536198	0.00231678	MINIMUM
82.10291785	161.93850579	0.01127713	MINIMUM
3.90175215	68.31179427	0.22842657	SADDLE
182.25483337	246.74922965	0.33626605	SADDLE
4.26630586	248.77400855	1.77678124	SADDLE
182.44268566	66.88329763	2.33174863	MAXIMUM

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MOID Plots

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