Asteroids

2010TD54 help

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

Orbital Properties

Epoch

61200.0

MJD

Orbit type

Apollo

Perihelion (q)

0.705

Aphelion (Q)

3.237

Eccentricity (e)

0.642

Inclination (i)

4.3

deg

Orbit period (P)

1010.9

Earth MOID

0.00147

U parameter

6.9

Next Earth close approach

Date

2033-03-02

Nominal distance (from Earth center)

0.10245

15326903

Maximum Brightness

27.4

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

28.9

mag

Diameter

4 - 10*

Taxonomic type

Rotation period (T)

0.01170

Discovery Information

Discovery Date

2010-10-09

Observatory

University of Arizona 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

61200.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

1.971219

1-sigma variation

0.000245

Unit

Eccentricity (e)

Value

0.642127

1-sigma variation

0.000068

Unit

Inclination (i)

Value

4.2943

1-sigma variation

0.0010

Unit

Long. of Ascending Node (Ω)

Value

18.1146

1-sigma variation

0.0343

Unit

Arg. of Perihelion (ω)

Value

76.6545

1-sigma variation

0.0369

Unit

Mean Anomaly (M)

Value

219.23316

1-sigma variation

0.56322

Unit

Perihelion distance

Value

0.705446

1-sigma variation

Unit

Aphelion distance

Value

3.236993

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.010452

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.358343

1-sigma variation

Unit

MOID

Value

0.001471

1-sigma variation

Unit

Orbit Period

Value

1010.8828

1-sigma variation

Unit

U parameter

Value

6.9

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	5.99376E-8	1.65700E-8	-2.56454E-7	-8.40364E-6	9.03870E-6	-1.37889E-4
e	1.65700E-8	4.58154E-9	-7.08559E-8	-2.32322E-6	2.49897E-6	-3.81199E-5
i	-2.56454E-7	-7.08559E-8	1.09998E-6	3.59565E-5	-3.86628E-5	5.89985E-4
Ω	-8.40364E-6	-2.32322E-6	3.59565E-5	1.17825E-3	-1.26728E-3	1.93329E-2
ω	9.03870E-6	2.49897E-6	-3.86628E-5	-1.26728E-3	1.36310E-3	-2.07939E-2
M	-1.37889E-4	-3.81199E-5	5.89985E-4	1.93329E-2	-2.07939E-2	3.17220E-1

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

0.01170

Unit

Source

[1]

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

[1]

Taxonomy (all)

Value

Unit

Source

[1]

Absolute Magnitude (H)
Slope Parameter (G)

H / G

Value

Unit

Source

Absolute Magnitude (H)

Value

28.75

28.888

Unit

mag

Source

[1]

[2]

Slope Parameter (G)

Value

0.15**

Unit

Source

[2]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

0.05 - 0.25

Unit

Source

[3]

Diameter

Value

4 - 10*

Unit

Source

[3]

Color Index Information

Color Index Information

Value

Unit

Source

Color Index Information

Value

0.46

Unit

V-R

Source

[1]

Sightings

Sightings

Value

Unit

Source

Sightings

Value

Visual S

Unit

Source

[4]

Download this part as:

Sources

No.	Name	Additional
[1]	EARN	1.) Hicks, M. & H.Rhoades (2010) href="http://www.astronomerstelegram.org/?read=2984"> ATel#2984 (The near-Earth asteroid 2010 TD54: The fastest rotating natural body known in the solar system?)
[2]	ESA Aegis	ESA orbit determination and impact monitoring system
[3]	Estimation	Estimated from absolute magnitude
[4]	EARN	1.) Popescu, M. et al. (2011) Astron. Astrophys. 535, A15. (Spectral properties of eight near-Earth asteroids) (1917, 8567,16960,164400,188452,2001SG286,2010TD54)

Observational Information

Arc Length
Unobserved
Normalized RMS of residuals

Arc Information

Value

Unit

Source

Arc Length

Value

Unit

Source

[1]

Unobserved

Value

5745

Unit

Source

[1]

Normalized RMS of residuals

Value

0.497959

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2010-10-09.33035

Unit

Source

[2]

Last Observation

Value

2010-10-12.32899

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

110 (2)

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):

* - these fields are required

Plot

Computation parameters

As seen from:

Initial Date: *

Final Date: *

Output option:

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Time step:*

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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 2010TD54 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	1970-05-21 04:43	> 1 w	0.0253175	0.0250872	0.0102667
EARTH	1979-10-10 07:17	> 1 d	0.0345405	0.0009205	0.0403351
EARTH	1987-03-07 23:13	> 1 d	0.1452096	0.0328164	0.0404267
EARTH	2010-10-12 10:49	< 1 s	0.0003462	0.0003460	0.0000001
4 Vesta	2029-10-09 06:34	805.6	0.0097263	0.0008955	0.0169210
MARS	2030-01-20 05:47	> 1 d	0.0107315	0.0103034	0.0069162
EARTH	2033-03-02 23:08	> 1 d	0.1024540	0.0327299	0.0425319
EARTH	2044-03-18 12:11	> 1 d	0.1133595	0.0325171	0.0735153
EARTH	2068-10-17 18:08	> 1 d	0.0583352	0.0039595	0.0381969
EARTH	2102-02-28 14:17	> 1 w	0.1339913	0.0284866	0.1391972
EARTH	2126-10-18 15:43	> 1 w	0.0528891	0.0065069	0.1114608

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
320.21588853	278.87116334	0.00143592	MINIMUM
39.77070197	68.14813179	0.03503401	MINIMUM
0.12234455	353.83413423	0.28491696	SADDLE
359.85162575	173.27197936	1.72223717	SADDLE
179.99688341	173.38510039	2.22290328	SADDLE
179.93816491	353.35870468	4.21865490	MAXIMUM

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MOID Plots

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