Asteroids

2012XE133 help

Last update: 2026-06-04 23:11 UTC

Orbital Properties

Epoch

61200.0

MJD

Orbit type

Aten

Perihelion (q)

0.410

Aphelion (Q)

1.036

Eccentricity (e)

0.433

Inclination (i)

6.7

deg

Orbit period (P)

224.6

Earth MOID

0.00251

U parameter

2.1

A₂

-224.7

10^-15au/days²

Next Earth close approach

Date

2028-12-30

Nominal distance (from Earth center)

0.00986

1474451

Maximum Brightness

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

23.2

mag

Diameter

60 - 130*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2012-12-12

Observatory

University of Arizona Catalina Sky 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

61200.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

0.723128

1-sigma variation

3.598E-8

Unit

Eccentricity (e)

Value

0.432612

1-sigma variation

1.142E-7

Unit

Inclination (i)

Value

6.7278

1-sigma variation

1.081E-5

Unit

Long. of Ascending Node (Ω)

Value

281.0068

1-sigma variation

1.160E-5

Unit

Arg. of Perihelion (ω)

Value

337.1128

1-sigma variation

1.713E-5

Unit

Mean Anomaly (M)

Value

165.53846

1-sigma variation

0.00016

Unit

Perihelion distance

Value

0.410295

1-sigma variation

Unit

Aphelion distance

Value

1.035962

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.596512

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.006334

1-sigma variation

Unit

MOID

Value

0.002508

1-sigma variation

Unit

Orbit Period

Value

224.6060

1-sigma variation

Unit

U parameter

Value

2.1

1-sigma variation

Unit

A₂

Value

-224.68177

1-sigma variation

62.60850

Unit

10^-15au/days²

Covariance Matrix

	a	e	i	Ω	ω	M	A₂
a	1.29478E-15	6.21320E-16	-7.35126E-14	8.82038E-14	-2.89627E-13	-5.68051E-12	2.25268E-6
e	6.21320E-16	1.30505E-14	9.10165E-13	-3.02963E-13	-1.27850E-12	1.31133E-12	1.12113E-6
i	-7.35126E-14	9.10165E-13	1.16841E-10	-8.72104E-11	-9.46848E-12	6.16600E-10	-1.25295E-4
Ω	8.82038E-14	-3.02963E-13	-8.72104E-11	1.34519E-10	-1.01688E-10	-5.08152E-10	1.54204E-4
ω	-2.89627E-13	-1.27850E-12	-9.46848E-12	-1.01688E-10	2.93526E-10	8.79387E-10	-5.07348E-4
M	-5.68051E-12	1.31133E-12	6.16600E-10	-5.08152E-10	8.79387E-10	2.62939E-8	-9.87402E-3
A₂	2.25268E-6	1.12113E-6	-1.25295E-4	1.54204E-4	-5.07348E-4	-9.87402E-3	3.91983E3

Date of computation: 2026-06-04 23:11 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

23.242

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

60 - 130*

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

[-]

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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

2946

Unit

Source

[1]

Unobserved

Value

1998

Unit

Source

[1]

Normalized RMS of residuals

Value

0.523332

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2012-12-12.43361

Unit

Source

[2]

Last Observation

Value

2021-01-05.250243

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

183 (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

Filters

Initial Date: *

Final Date: *

Normalised Only accepted

Max residual (arcsec):

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Plot

Computation parameters

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Initial Date: *

Final Date: *

Output option:

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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 2012XE133 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	1956-12-13 21:20	18.9	0.0672068	0.0671562	0.0000169
EARTH	1964-12-07 07:53	14.8	0.0731403	0.0731243	0.0000053
EARTH	1972-12-03 05:40	10.0	0.0744803	0.0744764	0.0000013
EARTH	1980-12-01 16:14	6.4	0.0745484	0.0745468	0.0000005
EARTH	1988-12-02 13:36	4.0	0.0742895	0.0742882	0.0000004
EARTH	1996-12-06 01:37	2.2	0.0730476	0.0730458	0.0000006
EARTH	2004-12-12 02:26	< 1 min	0.0683040	0.0683024	0.0000005
EARTH	2012-12-19 19:20	< 1 s	0.0552057	0.0552055	0.0000001
MERCURY	2013-03-23 01:38	< 1 min	0.0476980	0.0476977	0.0000001
EARTH	2020-12-26 21:57	< 1 s	0.0310722	0.0310721	0.0000000
EARTH	2028-12-30 09:19	< 1 min	0.0098561	0.0098498	0.0000021
EARTH	2036-12-21 22:15	3.6	0.0499122	0.0498908	0.0000071
MERCURY	2040-12-01 14:16	4.0	0.0485141	0.0484963	0.0000060
EARTH	2044-12-10 12:40	7.2	0.0704821	0.0704681	0.0000047
EARTH	2052-11-30 19:10	7.6	0.0752264	0.0752229	0.0000012
EARTH	2058-01-02 17:30	1.1	0.1949872	0.1948831	0.0000347
EARTH	2060-11-24 18:23	6.1	0.0771499	0.0771395	0.0000035
EARTH	2066-01-03 12:13	< 1 min	0.1606402	0.1605302	0.0000367
EARTH	2068-11-21 15:49	4.5	0.0818530	0.0818258	0.0000091
EARTH	2074-01-03 22:16	< 1 min	0.1378140	0.1377026	0.0000372
EARTH	2076-11-20 04:33	3.4	0.0876402	0.0875997	0.0000135
EARTH	2082-01-04 02:56	< 1 min	0.1248764	0.1247719	0.0000348
EARTH	2084-11-19 16:47	2.6	0.0912797	0.0912372	0.0000142
EARTH	2090-01-04 04:43	< 1 min	0.1216344	0.1215494	0.0000283
EARTH	2092-11-19 19:49	1.9	0.0910710	0.0910387	0.0000108
EARTH	2098-01-04 04:19	< 1 min	0.1287277	0.1286750	0.0000176
EARTH	2100-11-21 13:32	1.1	0.0871115	0.0870971	0.0000048
EARTH	2106-01-04 23:54	< 1 min	0.1448880	0.1448773	0.0000035
EARTH	2108-11-23 05:17	< 1 min	0.0812556	0.0812535	0.0000007
EARTH	2114-01-04 14:09	< 1 min	0.1695858	0.1695419	0.0000147
EARTH	2116-11-26 05:48	3.7	0.0764591	0.0764518	0.0000024
MERCURY	2124-01-09 01:36	10.1	0.0475242	0.0475086	0.0000053
EARTH	2124-12-01 10:02	9.9	0.0739253	0.0739189	0.0000021

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
213.99203010	358.61831015	0.00250487	MINIMUM
1.01083268	157.61649574	0.60715594	SADDLE
1.43803658	338.34958237	1.39486432	SADDLE
181.04192526	157.97223692	2.05230740	MAXIMUM

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MOID Plots

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