Asteroids

413260 2003TL4 help

Last update: 2025-05-21 08:47 UTC

Orbital Properties

Epoch

60800.0

MJD

Orbit type

Aten

Perihelion (q)

0.481

Aphelion (Q)

1.073

Eccentricity (e)

0.381

Inclination (i)

12.2

deg

Orbit period (P)

250.1

Earth MOID

0.02507

U parameter

0.8

A₂

-26.3

10^-15au/days²

Next Earth close approach

Date

2029-10-26

Nominal distance (from Earth center)

0.04253

6362717

Maximum Brightness

15.8

mag

Risk

Object is not in risk list

Object is not in priority list

Physical Properties

Absolute Magnitude (H)

19.5

mag

Diameter

380

Taxonomic type

Rotation period (T)

27.20

Discovery Information

Discovery Date

2003-10-13

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

60800.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

0.776769

1-sigma variation

5.796E-9

Unit

Eccentricity (e)

Value

0.381369

1-sigma variation

3.342E-8

Unit

Inclination (i)

Value

12.1883

1-sigma variation

4.403E-6

Unit

Long. of Ascending Node (Ω)

Value

220.0004

1-sigma variation

3.470E-6

Unit

Arg. of Perihelion (ω)

Value

321.9706

1-sigma variation

3.574E-6

Unit

Mean Anomaly (M)

Value

42.29866

1-sigma variation

0.00004

Unit

Perihelion distance

Value

0.480533

1-sigma variation

Unit

Aphelion distance

Value

1.073005

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.496907

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.043387

1-sigma variation

Unit

MOID

Value

0.025074

1-sigma variation

Unit

Orbit Period

Value

250.0554

1-sigma variation

Unit

U parameter

Value

0.8

1-sigma variation

Unit

A₂

Value

-26.29371

1-sigma variation

6.55527

Unit

10^-15au/days²

Covariance Matrix

	a	e	i	Ω	ω	M	A₂
a	3.35896E-17	7.29939E-17	1.04036E-15	-1.38041E-15	-2.94575E-15	-2.06654E-13	3.78149E-8
e	7.29939E-17	1.11663E-15	-4.19793E-14	2.39179E-14	-8.59423E-14	-2.75382E-13	7.71473E-8
i	1.04036E-15	-4.19793E-14	1.93827E-11	-1.52185E-11	1.32495E-11	-1.29918E-11	3.43786E-7
Ω	-1.38041E-15	2.39179E-14	-1.52185E-11	1.20428E-11	-9.88700E-12	1.21273E-11	-8.55579E-7
ω	-2.94575E-15	-8.59423E-14	1.32495E-11	-9.88700E-12	1.27761E-11	2.04143E-12	-3.88038E-6
M	-2.06654E-13	-2.75382E-13	-1.29918E-11	1.21273E-11	2.04143E-12	1.31515E-9	-2.31721E-4
A₂	3.78149E-8	7.71473E-8	3.43786E-7	-8.55579E-7	-3.88038E-6	-2.31721E-4	4.29715E1

Date of computation: 2025-05-21 08:47 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

27.20

Unit

Source

[1]

[2]

Quality

Value

Unit

Source

[1]

Amplitude

Value

1.0

Unit

mag

Source

[2]

[1]

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

19.543

Unit

mag

Source

[3]

Slope Parameter (G)

Value

0.15**

Unit

mag

Source

[3]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

0.22

Unit

Source

[4]

Diameter

Value

380

Unit

Source

[4]

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

Unit

Source

[5]

Download this part as:

Sources

No.	Name	Additional
[1]	EARN	1.) Petr Pravec's Ondrejov NEO Photometric Program Webpage "Prepublished Periods"
[2]	EARN	1.) Pravec, P.; Wolf, M.; Sarounova, L. (2003) http://www.asu.cas.cz/~ppravec/neo.htm
[3]	ESA Aegis	ESA orbit determination and impact monitoring system
[4]	EARN	1.) Trilling, D.E. et al. (2010) Astron. J. 140, 770-784. (EXPLORENEOs. I. DESCRIPTION AND FIRST RESULTS FROM THE WARM SPITZER NEAR-EARTH OBJECT SURVEY) (diameters & albedos for 101 NEOs)
[5]	EARN	1.) href="http://echo.jpl.nasa.gov/asteroids/index.html">JPL's NEO Radar Detection Program Webpage

Observational Information

Arc Length
Unobserved
Normalized RMS of residuals

Arc Information

Value

Unit

Source

Arc Length

Value

7013

Unit

Source

[1]

Unobserved

Value

930

Unit

Source

[1]

Normalized RMS of residuals

Value

0.450331

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2003-10-13.37711

Unit

Source

[2]

Last Observation

Value

2022-12-25.085979

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

469 (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

2003-10-25

Unit

Source

[3]

Last Observation

Value

2016-10-27

Unit

Source

[3]

Delay (Discarded)

Value

4 (0)

Unit

Source

[1]

Doppler (Discarded)

Value

6 (0)

Unit

Source

[1]

Total Radar Observations (Discarded)

Value

10 (0)

Unit

Source

[1]

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
[3]	JPL Radar Observations	Jet Propulsion Laboratory: https://ssd.jpl.nasa.gov/dat/radar_data_ast.txt

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 413260 2003TL4 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	1953-10-26 10:07	< 1 min	0.0441595	0.0441509	0.0000029
EARTH	1955-09-05 03:07	< 1 min	0.1932398	0.1932370	0.0000009
EARTH	1966-10-19 19:39	< 1 min	0.0978776	0.0978719	0.0000019
EARTH	1977-10-27 19:54	< 1 min	0.1162427	0.1162373	0.0000018
EARTH	1979-10-04 11:04	< 1 min	0.1504755	0.1504734	0.0000007
EARTH	1990-10-28 18:32	< 1 s	0.0389047	0.0389031	0.0000006
EARTH	1992-09-18 02:16	< 1 min	0.1759644	0.1759639	0.0000002
EARTH	2003-10-28 16:11	< 1 s	0.0259726	0.0259726	0.0000000
EARTH	2005-09-14 03:44	< 1 s	0.1810482	0.1810480	0.0000001
EARTH	2016-10-27 16:46	< 1 s	0.0258585	0.0258585	0.0000000
EARTH	2018-09-11 17:26	< 1 s	0.1847193	0.1847191	0.0000001
EARTH	2029-10-26 15:27	< 1 min	0.0425321	0.0425305	0.0000005
EARTH	2031-09-06 00:21	< 1 min	0.1940306	0.1940299	0.0000002
EARTH	2042-10-20 14:59	< 1 min	0.0937157	0.0937117	0.0000013
EARTH	2053-10-27 19:04	< 1 min	0.1306331	0.1306239	0.0000031
EARTH	2055-10-07 19:57	< 1 min	0.1425085	0.1425036	0.0000016
EARTH	2066-10-29 02:03	< 1 s	0.0509940	0.0509831	0.0000036
EARTH	2068-09-21 10:16	< 1 min	0.1722094	0.1722061	0.0000011
EARTH	2079-10-28 23:30	< 1 min	0.0262101	0.0262073	0.0000009
EARTH	2081-09-16 06:09	< 1 min	0.1793731	0.1793706	0.0000008
EARTH	2092-10-28 12:02	< 1 min	0.0333926	0.0333762	0.0000055
EARTH	2094-09-21 04:29	2.1	0.1731332	0.1731254	0.0000026
EARTH	2105-10-29 18:30	< 1 min	0.0855236	0.0854827	0.0000136
EARTH	2107-10-04 22:10	3.7	0.1513013	0.1512822	0.0000064
EARTH	2118-10-28 22:12	< 1 min	0.1472736	0.1472236	0.0000167
EARTH	2120-10-15 07:44	3.8	0.1193720	0.1193407	0.0000104

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
227.07792677	293.24090939	0.02507352	MINIMUM
358.62242315	76.41421231	0.52420670	SADDLE
2.70015135	262.42413612	1.48031048	SADDLE
183.51294663	83.57474304	2.06640428	MAXIMUM

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MOID Plots

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