Asteroids

237442 1999TA10 help

Last update: 2025-09-10 00:30 UTC

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Amor

Perihelion (q)

1.142

Aphelion (Q)

1.869

Eccentricity (e)

0.242

Inclination (i)

20.8

deg

Orbit period (P)

674.8

Earth MOID

0.30324

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

61000.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

1.505675

1-sigma variation

1.056E-9

Unit

Eccentricity (e)

Value

0.241620

1-sigma variation

1.892E-8

Unit

Inclination (i)

Value

20.8431

1-sigma variation

5.381E-6

Unit

Long. of Ascending Node (Ω)

Value

214.6434

1-sigma variation

5.868E-6

Unit

Arg. of Perihelion (ω)

Value

84.7880

1-sigma variation

1.221E-5

Unit

Mean Anomaly (M)

Value

102.87007

1-sigma variation

0.00001

Unit

Perihelion distance

Value

1.141873

1-sigma variation

Unit

Aphelion distance

Value

1.869477

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.379833

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.455882

1-sigma variation

Unit

MOID

Value

0.303244

1-sigma variation

Unit

Orbit Period

Value

674.8315

1-sigma variation

Unit

U parameter

Value

0.0

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.11496E-18	3.28346E-18	-3.21750E-17	6.09489E-17	-3.89533E-16	-1.34617E-15
e	3.28346E-18	3.57909E-16	-5.57535E-15	-2.66472E-15	1.33781E-14	-3.25410E-14
i	-3.21750E-17	-5.57535E-15	2.89582E-11	-1.07956E-11	5.69293E-12	4.07693E-12
Ω	6.09489E-17	-2.66472E-15	-1.07956E-11	3.44388E-11	-3.95593E-11	6.55611E-12
ω	-3.89533E-16	1.33781E-14	5.69293E-12	-3.95593E-11	1.49179E-10	-9.37032E-11
M	-1.34617E-15	-3.25410E-14	4.07693E-12	6.55611E-12	-9.37032E-11	7.85693E-11

Date of computation: 2025-09-10 00:30 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

[5]

Amplitude

Value

0.1

0.12

0.1

Unit

mag

Source

[4]

[1]

[5]

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

18.171

18.47

Unit

mag

Source

[6]

[7]

Slope Parameter (G)

Value

0.15**

0.24

Unit

mag

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.) Pravec, P.; Wolf, M.; Sarounova, L. (1999) http://www.asu.cas.cz/~ppravec/neo.htm
[5]	EARN	1.) Petr Pravec's Ondrejov NEO Photometric Program Webpage "Prepublished Periods" 2.) Harris(JPL), A.W. unpublished data
[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

8868

Unit

Source

[1]

Unobserved

Value

630

Unit

Source

[1]

Normalized RMS of residuals

Value

0.455882

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

2024-01-15.127845

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

1112 (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

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 237442 1999TA10 from 1950 to 2125

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
312.11558041	135.97867028	0.30452325	MINIMUM
50.52945197	261.93113879	0.34983118	MINIMUM
5.80900057	205.14614673	0.41015105	SADDLE
181.67445422	18.05784468	1.01137936	SADDLE
0.23911635	17.40763563	2.09156229	SADDLE
178.14747582	195.13409978	2.84238620	MAXIMUM

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MOID Plots

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