Asteroids

416186 2002TD60 help

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

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Amor

Perihelion (q)

1.103

Aphelion (Q)

1.302

Eccentricity (e)

0.083

Inclination (i)

7.4

deg

Orbit period (P)

481.4

Earth MOID

0.11627

U parameter

0.0

Next Earth close approach

Date

2031-11-24

Nominal distance (from Earth center)

0.12181

18222165

Maximum Brightness

15.8

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

19.4

mag

Diameter

400 - 800*

Taxonomic type

Rotation period (T)

2.851

Discovery Information

Discovery Date

2002-10-05

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

1.202121

1-sigma variation

2.377E-9

Unit

Eccentricity (e)

Value

0.082695

1-sigma variation

4.325E-8

Unit

Inclination (i)

Value

7.4108

1-sigma variation

3.124E-6

Unit

Long. of Ascending Node (Ω)

Value

62.6177

1-sigma variation

1.056E-5

Unit

Arg. of Perihelion (ω)

Value

343.7218

1-sigma variation

4.008E-5

Unit

Mean Anomaly (M)

Value

173.44445

1-sigma variation

0.00005

Unit

Perihelion distance

Value

1.102712

1-sigma variation

Unit

Aphelion distance

Value

1.301530

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.118857

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.282617

1-sigma variation

Unit

MOID

Value

0.116271

1-sigma variation

Unit

Orbit Period

Value

481.4162

1-sigma variation

Unit

U parameter

Value

0.0

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	5.64803E-18	-7.02219E-17	-1.25932E-15	1.67578E-15	8.90865E-14	-1.23379E-13
e	-7.02219E-17	1.87094E-15	1.09001E-14	-2.62676E-14	-9.99399E-13	1.40829E-12
i	-1.25932E-15	1.09001E-14	9.75819E-12	-7.08026E-12	-1.45784E-11	2.89479E-11
Ω	1.67578E-15	-2.62676E-14	-7.08026E-12	1.11610E-10	-8.53886E-11	-3.40470E-11
ω	8.90865E-14	-9.99399E-13	-1.45784E-11	-8.53886E-11	1.60621E-9	-2.03880E-9
M	-1.23379E-13	1.40829E-12	2.89479E-11	-3.40470E-11	-2.03880E-9	2.78930E-9

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

2.851

Unit

Source

[4]

Quality

Value

3,T

Unit

Source

[4]

Amplitude

Value

1.0-2.0

Unit

mag

Source

[4]

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]

[2]

Taxonomy (all)

Value

Unit

Source

[3]

[2]

Absolute Magnitude (H)
Slope Parameter (G)

H / G

Value

Unit

Source

Absolute Magnitude (H)

Value

19.366

19.9

Unit

mag

Source

[5]

[6]

Slope Parameter (G)

Value

0.55

0.15**

Unit

mag

Source

[6]

[5]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

0.05 - 0.25

Unit

Source

[7]

Diameter

Value

400 - 800*

Unit

Source

[7]

Color Index Information

Color Index Information

Value

Unit

Source

Color Index Information

Value

Unit

mag

Source

[-]

Sightings

Sightings

Value

Unit

Source

Sightings

Value

Radar R

Visual S

Unit

Source

[8]

[9]

Satellites

Satellites

Value

Unit

Source

Satellites

Value

Binary Child 1

Unit

Source

[3]

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Sources

No.	Name	Additional
[1]	EARN	1.) Michaël Marsset et al 2022 AJ 163 165
[2]	EARN	1.) Lazzarin, M., Marchi,S. & Magrin, S. (2010) href="http://www.astro.unipd.it/planets/sineo/data.html"> SINEO Database (Spectroscopic Investiation of Near-Earth Objects)
[3]	EARN	Earth Asteroids Research Node: https://earn.dlr.de
[4]	EARN	1.) Pravec, P. et al. (2005) Icarus 173, 108-131. (Tumbling asteroids) 2.) Petr Pravec's Ondrejov NEO Photometric Program Webpage "Prepublished Periods" 3.) Warner, B.D. (2015) MPB 42, 256-266. (NEAR-EARTH ASTEROID LIGHTCURVE ANALYSIS AT CS3-PALMER DIVIDE STATION: 2015 MARCH-JUNE)(35 NEAs)
[5]	ESA Aegis	ESA orbit determination and impact monitoring system
[6]	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)
[7]	Estimation	Estimated from absolute magnitude
[8]	EARN	1.) href="http://echo.jpl.nasa.gov/asteroids/index.html">JPL's NEO Radar Detection Program Webpage
[9]	EARN	1.) Lazzarin, M., Marchi,S. & Magrin, S. (2010) href="http://www.astro.unipd.it/planets/sineo/data.html"> SINEO Database (Spectroscopic Investiation of Near-Earth Objects) 2.) deLeon, J. et al. (2010) Astron. Astrophys 517, A23. (Observations, compositional, and physical characterization of near-Earth and Mars-crosser asteroids from a spectroscopic survey)

Observational Information

Arc Length
Unobserved
Normalized RMS of residuals

Arc Information

Value

Unit

Source

Arc Length

Value

7734

Unit

Source

[1]

Unobserved

Value

688

Unit

Source

[1]

Normalized RMS of residuals

Value

0.458514

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2002-10-05.40256

Unit

Source

[2]

Last Observation

Value

2023-12-08.093024

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

1041 (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

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 416186 2002TD60 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
EARTH	1973-11-19 16:38	< 1 min	0.1175840	0.1175837	0.0000001
EARTH	2002-11-21 01:38	< 1 min	0.1183499	0.1183498	0.0000000
EARTH	2031-11-24 10:27	< 1 min	0.1218077	0.1218073	0.0000001
EARTH	2056-10-04 20:02	1.2	0.1887309	0.1887292	0.0000006
EARTH	2060-11-29 17:50	< 1 min	0.1326363	0.1326349	0.0000004
EARTH	2085-10-20 10:48	1.0	0.1637258	0.1637231	0.0000009
EARTH	2089-12-08 17:10	1.1	0.1529955	0.1529931	0.0000008
EARTH	2114-10-31 20:01	< 1 min	0.1412267	0.1412243	0.0000008
EARTH	2118-12-19 05:06	1.4	0.1752488	0.1752461	0.0000009

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
7.11705392	312.56500249	0.11628994	MINIMUM
150.40411895	96.32446710	0.30412894	SADDLE
348.11424468	112.23579858	2.10975931	SADDLE
174.16833729	298.31279327	2.29244664	MAXIMUM

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MOID Plots

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