Asteroids

237442 1999TA10 help

Last update: 2026-07-30 09:40 UTC

Orbital Properties

Epoch

61200.0

MJD

Orbit type

Amor

Perihelion (q)

1.142

Aphelion (Q)

1.870

Eccentricity (e)

0.242

Inclination (i)

20.8

deg

Orbit period (P)

674.9

Earth MOID

0.30487

U parameter

0.0

Next Earth close approach

Date

Nominal distance (from Earth center)

Maximum Brightness

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

18.2

mag

Diameter

1000

Taxonomic type

S/Sr

Rotation period (T)

5.101

Discovery Information

Discovery Date

1999-10-05

Observatory

Lincoln Laboratory ETS, New Mexico

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

1.505766

1-sigma variation

1.053E-9

Unit

Eccentricity (e)

Value

0.241588

1-sigma variation

1.879E-8

Unit

Inclination (i)

Value

20.8411

1-sigma variation

4.606E-6

Unit

Long. of Ascending Node (Ω)

Value

214.6257

1-sigma variation

5.421E-6

Unit

Arg. of Perihelion (ω)

Value

84.8358

1-sigma variation

1.052E-5

Unit

Mean Anomaly (M)

Value

209.51237

1-sigma variation

0.00001

Unit

Perihelion distance

Value

1.141991

1-sigma variation

Unit

Aphelion distance

Value

1.869542

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.381955

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.455297

1-sigma variation

Unit

MOID

Value

0.304871

1-sigma variation

Unit

Orbit Period

Value

674.8928

1-sigma variation

Unit

U parameter

Value

0.0

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.10885E-18	3.69074E-18	-9.65627E-17	3.31667E-18	2.56828E-16	-1.93352E-15
e	3.69074E-18	3.53107E-16	-3.27827E-15	-3.30224E-15	3.62330E-15	-2.49484E-14
i	-9.65627E-17	-3.27827E-15	2.12153E-11	-4.84495E-12	3.15261E-13	3.94655E-12
Ω	3.31667E-18	-3.30224E-15	-4.84495E-12	2.93913E-11	-3.21785E-11	4.50085E-12
ω	2.56828E-16	3.62330E-15	3.15261E-13	-3.21785E-11	1.10698E-10	-6.93898E-11
M	-1.93352E-15	-2.49484E-14	3.94655E-12	4.50085E-12	-6.93898E-11	6.16890E-11

Date of computation: 2026-07-30 09:40 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

5.101

Unit

Source

[4]

[1]

[5]

Quality

Value

Unit

Source

[4]

Amplitude

Value

0.1

0.12

0.1

Unit

mag

Source

[5]

[1]

[4]

Rotation Direction

Value

Unit

Source

[-]

Spinvector L

Value

234

Unit

Source

[1]

Spinvector B

Value

Unit

Source

[1]

Taxonomy
Taxonomy (all)

Taxonomy

Value

Unit

Source

Taxonomy

Value

S/Sr

Unit

Source

[2]

Taxonomy (all)

Value

S/Sr

Unit

Source

[3]

Absolute Magnitude (H)
Slope Parameter (G)

H / G

Value

Unit

Source

Absolute Magnitude (H)

Value

18.172

18.47

Unit

mag

Source

[6]

[7]

Slope Parameter (G)

Value

0.15**

0.24

Unit

Source

[6]

[8]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

medium

Unit

Source

[9]

Diameter

Value

1000

Unit

Source

[9]

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]	EARN	1.) Lowell Observatory Near-Earth Asteroid Photometric Survey (NEAPS): Paper 3. Skiff, Brian A et al.
[2]	EARN	1.) DeMeo, F.E. et al. (2014) Icarus 227, 112-122. (Mars encounters cause fresh surfaces on some near-Earth asteroids) (contains taxonomic classification of 249 NEAs)
[3]	EARN	1.) Thomas, C.A. et al. (2014) Icarus 228, 217-246. (Physical characterization of Warm Spitzer-observed near-Earth objects) 2.) DeMeo, F.E. et al. (2014) Icarus 227, 112-122. (Mars encounters cause fresh surfaces on some near-Earth asteroids) (contains taxonomic classification of 249 NEAs)
[4]	EARN	1.) Petr Pravec's Ondrejov NEO Photometric Program Webpage "Prepublished Periods" 2.) Harris(JPL), A.W. unpublished data
[5]	EARN	1.) Pravec, P.; Wolf, M.; Sarounova, L. (1999) http://www.asu.cas.cz/~ppravec/neo.htm
[6]	ESA Aegis	ESA orbit determination and impact monitoring system
[7]	EARN	1.) Pravec, P. et al. (2012) Icarus 221, 365-387 (Absolute magnitudes of asteroids and a revision of asteroid albedo estimates from WISE thermal observations) 2.) Petr Pravec's Ondrejov NEO Photometric Program Webpage "Prepublished Periods"
[8]	EARN	1.) Pravec, P. et al. (2012) Icarus 221, 365-387 (Absolute magnitudes of asteroids and a revision of asteroid albedo estimates from WISE thermal observations)
[9]	EARN	1.) Binzel, R.P. et al. (2002) in "Asteroids III" (Eds. W.F.Bottke et al.), Univ.Ariz.Press, Tucson, USA, pp. 255-271. (Physical Properties of NEOs)

Observational Information

Arc Length
Unobserved
Normalized RMS of residuals

Arc Information

Value

Unit

Source

Arc Length

Value

9596

Unit

Source

[1]

Unobserved

Value

301

Unit

Source

[1]

Normalized RMS of residuals

Value

0.457605

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

1999-10-05.3221

Unit

Source

[2]

Last Observation

Value

2026-01-12.305932

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

1148 (13)

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

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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 237442 1999TA10 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
MARS	2086-09-05 20:57	< 1 min	0.0174468	0.0174459	0.0000003

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
312.13154784	133.83585784	0.30487092	MINIMUM
50.57855733	259.85765279	0.34917368	MINIMUM
5.73160856	202.88636857	0.41014272	SADDLE
181.68883697	15.95714312	1.01155352	SADDLE
0.30498040	15.34396903	2.09146511	SADDLE
178.23215131	193.09230310	2.84295953	MAXIMUM

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MOID Plots

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