Asteroids

2025UC11 help

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

Orbital Properties

Epoch

61200.0

MJD

Orbit type

Aten

Perihelion (q)

0.898

Aphelion (Q)

0.995

Eccentricity (e)

0.051

Inclination (i)

5.1

deg

Orbit period (P)

336.2

Earth MOID

0.00112

U parameter

4.2

Next Earth close approach

Date

2037-06-07

Nominal distance (from Earth center)

0.12625

18887362

Maximum Brightness

38.1

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

mag

Diameter

0.4 - 0.9*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2025-10-30

Observatory

JPL SynTrack Robotic Telescope, Auberry

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

0.946247

1-sigma variation

0.000002

Unit

Eccentricity (e)

Value

0.051123

1-sigma variation

0.000002

Unit

Inclination (i)

Value

5.0916

1-sigma variation

0.0003

Unit

Long. of Ascending Node (Ω)

Value

35.8778

1-sigma variation

0.0001

Unit

Arg. of Perihelion (ω)

Value

195.5243

1-sigma variation

0.0005

Unit

Mean Anomaly (M)

Value

41.09522

1-sigma variation

0.00100

Unit

Perihelion distance

Value

0.897872

1-sigma variation

Unit

Aphelion distance

Value

0.994622

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.001180

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.106549

1-sigma variation

Unit

MOID

Value

0.001124

1-sigma variation

Unit

Orbit Period

Value

336.2059

1-sigma variation

Unit

U parameter

Value

4.2

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	3.30010E-12	-3.59127E-12	-4.99082E-10	-2.32893E-10	8.32906E-10	-1.81124E-9
e	-3.59127E-12	3.90884E-12	5.43119E-10	2.53479E-10	-9.03965E-10	1.96831E-9
i	-4.99082E-10	5.43119E-10	7.60170E-8	3.54408E-8	-1.25855E-7	2.73569E-7
Ω	-2.32893E-10	2.53479E-10	3.54408E-8	1.65283E-8	-5.86069E-8	1.27533E-7
ω	8.32906E-10	-9.03965E-10	-1.25855E-7	-5.86069E-8	2.18516E-7	-4.66551E-7
M	-1.81124E-9	1.96831E-9	2.73569E-7	1.27533E-7	-4.66551E-7	1.00487E-6

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

34.027

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

0.4 - 0.9*

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

0.6

Unit

Source

[1]

Unobserved

Value

171

Unit

Source

[1]

Normalized RMS of residuals

Value

0.913595

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2025-10-30.215865

Unit

Source

[2]

Last Observation

Value

2025-10-30.84839

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

41 (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

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 2025UC11 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	1955-07-09 22:23	> 1 d	0.1735612	0.1731968	0.0001217
EARTH	1956-03-16 17:46	192.6	0.1532134	0.1442195	0.0029989
EARTH	1966-10-20 11:49	277.7	0.0679180	0.0590112	0.0029698
EARTH	1967-06-04 21:54	> 1 d	0.1620603	0.1603665	0.0005654
EARTH	1978-10-20 10:07	86.4	0.0669116	0.0641888	0.0009076
EARTH	1979-06-06 22:07	1233.7	0.1610688	0.1606187	0.0001501
EARTH	1991-07-15 09:44	> 1 d	0.1679996	0.1676104	0.0001298
EARTH	1992-03-17 01:23	90.1	0.1181858	0.1138126	0.0014581
EARTH	2003-08-12 01:45	264.2	0.1491487	0.1490501	0.0000328
EARTH	2004-03-07 20:26	28.2	0.0172627	0.0171092	0.0000518
EARTH	2014-12-22 18:25	499.2	0.0511937	0.0510724	0.0000404
EARTH	2015-04-15 04:28	591.4	0.1064534	0.1059250	0.0001762
EARTH	2025-10-30 12:10	< 1 s	0.0000441	0.0000441	0.0000000
EARTH	2026-02-28 16:35	1.9	0.0938716	0.0938575	0.0000047
EARTH	2037-06-07 20:06	296.2	0.1262542	0.1262054	0.0000165
EARTH	2037-12-19 23:43	3.0	0.1913551	0.1907698	0.0001952
EARTH	2048-10-23 07:51	17.9	0.0560516	0.0552372	0.0002715
EARTH	2049-03-29 11:24	268.0	0.0947578	0.0946480	0.0000373
EARTH	2060-10-21 15:38	36.3	0.0769261	0.0741963	0.0009102
EARTH	2061-04-08 10:34	1016.7	0.0956202	0.0952705	0.0001247
EARTH	2073-06-13 14:52	524.1	0.1245842	0.1245373	0.0000163
EARTH	2073-12-23 13:17	8.3	0.1632873	0.1622993	0.0003296
EARTH	2085-10-31 11:50	386.0	0.0174429	0.0140051	0.0011530
EARTH	2096-10-21 15:40	> 1 d	0.0370803	0.0058835	0.0323612
EARTH	2097-03-20 21:40	> 1 w	0.0962322	0.0931607	0.0060827
EARTH	2108-11-07 03:05	> 1 mo	0.0399042	0.0119740	0.2230312
EARTH	2119-10-19 03:13	> 1 w	0.0964198	0.0126910	0.6514880
EARTH	2120-04-11 08:17	> 1 mo	0.1060127	0.1042176	0.0960483

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
163.62009085	295.93335651	0.00027553	MINIMUM
42.41054195	174.86047739	0.13161546	SADDLE
14.18559355	324.80930349	1.88430327	SADDLE
190.49928377	141.11870540	2.00803577	MAXIMUM

Download:

MOID Plots

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