Asteroids

481532 2007LE help

Last update: 2024-04-23 12:57 UTC

Orbital Properties

Epoch

60400.0

MJD

Orbit type

Apollo

Perihelion (q)

0.891

Aphelion (Q)

2.787

Eccentricity (e)

0.516

Inclination (i)

29.6

deg

Orbit period (P)

910.8

Earth MOID

0.04641

U parameter

0.0

Next Earth close approach

Date

Nominal distance (from Earth center)

Maximum Brightness

mag

Risk

Object is not in risk list

Object is not in priority list

Physical Properties

Absolute Magnitude (H)

19.6

mag

Diameter

500

Taxonomic type

Rotation period (T)

2.603

Discovery Information

Discovery Date

2007-06-07

Observatory

Lincoln Laboratory ETS, New Mexico

Orbit Visualiser

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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

60400.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

1.838908

1-sigma variation

7.525E-10

Unit

Eccentricity (e)

Value

0.515711

1-sigma variation

2.251E-8

Unit

Inclination (i)

Value

29.5528

1-sigma variation

7.734E-6

Unit

Long. of Ascending Node (Ω)

Value

73.6239

1-sigma variation

2.204E-6

Unit

Arg. of Perihelion (ω)

Value

120.2594

1-sigma variation

7.140E-6

Unit

Mean Anomaly (M)

Value

285.11602

1-sigma variation

1.675E-6

Unit

Perihelion distance

Value

0.890564

1-sigma variation

Unit

Aphelion distance

Value

2.787253

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.839343

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.056766

1-sigma variation

Unit

MOID

Value

0.046411

1-sigma variation

Unit

Orbit Period

Value

910.8325

1-sigma variation

Unit

U parameter

Value

0.0

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	5.66195E-19	4.54564E-18	-4.82678E-15	1.52019E-15	-2.38768E-15	-4.15352E-16
e	4.54564E-18	5.06748E-16	-5.74647E-15	4.65770E-15	-1.57716E-13	3.06826E-14
i	-4.82678E-15	-5.74647E-15	5.98193E-11	-1.66524E-11	1.17538E-11	6.56220E-12
Ω	1.52019E-15	4.65770E-15	-1.66524E-11	4.85571E-12	-4.39179E-12	-1.80804E-12
ω	-2.38768E-15	-1.57716E-13	1.17538E-11	-4.39179E-12	5.09750E-11	-8.23683E-12
M	-4.15352E-16	3.06826E-14	6.56220E-12	-1.80804E-12	-8.23683E-12	2.80532E-12

Date of computation: 2024-04-23 10:08 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

2.603

Unit

Source

[4]

[5]

Quality

Value

3,B,R

Unit

Source

[5]

[4]

Amplitude

Value

0.3

0.15

Unit

mag

Source

[4]

[5]

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

18.61

19.561

Unit

mag

Source

[2]

[6]

Slope Parameter (G)

Value

0.041

0.15**

Unit

mag

Source

[2]

[6]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

0.08

Unit

Source

[7]

Diameter

Value

500

Unit

Source

[8]

Color Index Information

Color Index Information

Value

Unit

Source

Color Index Information

Value

0.4

0.68

0.34

Unit

V-R

B-V

R-I

Source

[2]

Sightings

Sightings

Value

Unit

Source

Sightings

Value

Radar R

Unit

Source

[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.) Alexey V. Sergeyev and Benoit Carry A&A, 652 (2021) A59
[2]	EARN	1.) Hicks, M. et al. (2012) href="http://www.astronomerstelegram.org/?read=4188"> ATel#4188 (Broadband Photometry of 2007 LE: A Binary Near-Earth Asteroid)
[3]	EARN	Earth Asteroids Research Node: https://earn.dlr.de
[4]	EARN	1.) Hicks, M. et al. (2012) href="http://www.astronomerstelegram.org/?read=4188"> ATel#4188 (Broadband Photometry of 2007 LE: A Binary Near-Earth Asteroid) 2.) Brozovic, M. et al. (2012) CBET HREF="http://www.cbat.eps.harvard.edu/iau/cbet/003100/CBET003175.txt"> 3175. (2007 LE) (Radar binary detection)
[5]	EARN	1.) Hicks, M.; Smythe, W.; Dombroski, D.; Davtyan, T.; et al. (2012) Astronomer's Telegram 4188. http://www.astronomerstelegram.org
[6]	ESA ODIM	ESA orbit determination and impact monitoring system
[7]	EARN	1.) Fieber-Beyer, S.K. et al. (2014) Icarus 250, 430-437. (Potentially Hazardous Asteroid 2007 LE: Compositional Link to the Black Chondrite Rose City and Asteroid (6) Hebe)
[8]	EARN	1.) Brozovic, M. et al. (2012) CBET HREF="http://www.cbat.eps.harvard.edu/iau/cbet/003100/CBET003175.txt"> 3175. (2007 LE) (Radar binary detection) 2.) Hicks, M. et al. (2012) href="http://www.astronomerstelegram.org/?read=4188"> ATel#4188 (Broadband Photometry of 2007 LE: A Binary Near-Earth Asteroid)
[9]	EARN	1.) href="http://echo.jpl.nasa.gov/asteroids/index.html">JPL's NEO Radar Detection Program Webpage 2.) Brozovic, M. et al. (2012) CBET HREF="http://www.cbat.eps.harvard.edu/iau/cbet/003100/CBET003175.txt"> 3175. (2007 LE) (Radar binary detection)

Observational Information

Arc Length
Unobserved
Normalized RMS of residuals

Arc Information

Value

Unit

Source

Arc Length

Value

7499

Unit

Source

[1]

Unobserved

Value

661

Unit

Source

[1]

Normalized RMS of residuals

Value

0.396409

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2001-12-20.19973

Unit

Source

[2]

Last Observation

Value

2022-07-02.214664

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

484 (7)

Unit

Source

[1]

Radar Summary

First Observation
Last Observation
Delay (Discarded)
Doppler (Discarded)
Total Optical Observations (Discarded)

Radar

Value

Unit

Source

First Observation

Value

2012-05-31

Unit

Source

[3]

Last Observation

Value

2017-05-28

Unit

Source

[3]

Delay (Discarded)

Value

5 (0)

Unit

Source

[1]

Doppler (Discarded)

Value

1 (0)

Unit

Source

[1]

Total Radar Observations (Discarded)

Value

6 (0)

Unit

Source

[1]

Note: The ASCII file is in a format suitable for Orbfit input.

Sources

No.	Name	Additional
[1]	ESA ODIM	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 481532 2007LE from 1950 to 2124

Body	Date in UTC	Time uncert. in min	Nominal distance in au	Min. possibile distance in au
EARTH	2007-06-07 02:57	< 1 s	0.1071434	0.1071433
EARTH	2012-06-02 07:24	< 1 s	0.0478343	0.0478343
EARTH	2017-05-29 07:45	< 1 s	0.0816125	0.0816125
EARTH	2022-05-24 13:39	< 1 s	0.1674981	0.1674981

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