Asteroids with Satellites Database--Johnston's Archive
(481532) 2007 LE
compiled by Wm. Robert Johnston
last updated
20 September 2014
--Orbital and physical data--
(See this page for definitions of quantities; source codes in brackets, see this link for full references; *A, *D, and *E indicate assumed, derived, and estimated values, respectively.)
dynamical type, primary:
NEA, Apollo
(PHA)
orbital data, primary (osculating elements)
[JPL]
: |
semimajor axis a: |
1.838829142 AU
| |
orbital period P: |
2.493562563 yr
(= 910.7737262 d)
| |
eccentricity e: |
0.516738856
| |
perihelion distance q: |
0.888634674 AU
| |
aphelion distance Q: |
2.789023610 AU
| |
inclination i: |
29.520961°
| |
argument of perihelion ω: |
120.115003°
| |
ascending node Ω: |
73.7623125°
| |
mean anomaly M: |
301.9938604°
| |
perihelion passage TP: |
2014 Oct 16.751299
| |
Epoch: |
2014 May 23
| |
data arc: |
2001-2012
(361 obs.)
| |
Earth MOID: |
0.0454952 AU
| |
Jupiter Tisserand invariant TJ: |
3.715
|
orbital data, secondary:
|
semimajor axis as: |
1.4
km
[*E]
| |
separation/primary radius as/rp: | 5.6 [*E] | |
separation/Hill radius as/rH: | 0.040 [*E] | |
orbital period Ps: |
1.396
± 0.02
d [H12a]
| |
eccentricity es: |
?
| |
normalized ang. mom. αL: |
?
|
|
other data, system (combined):
|
absolute mag. H: |
19.7
[MPC]
| |
slope parameter G: |
(0.15) [*A]
| |
effective diameter dE: |
0.53
km [*D]
| |
geometric albedo: |
0.08
[*E]
| |
color index U-B: |
?
| |
color index B-V: |
?
| |
taxonomic type: |
?
| |
mass m: |
?
| |
density ρ: |
(1.6
g/cm3) [*A]
| |
Hill radius rH: |
35 km [*E]
|
other data, primary:
|
diameter dp: |
0.5
km [B12a]
| |
rotation period RPp: |
2.603
± 0.005
h [H12a]
| |
amplitude in mag., rotational ΔM: |
?
| |
pole direction Β, λ: |
?
,
?
|
other data, secondary:
|
diameter ds: |
0.18
km [B12a]
| |
diameter ratio ds/dp: |
0.36
[*D]
| |
component mag. difference ΔM: |
2.2
[* D]
| |
rotation period RPs: |
?
| |
|
|
--
(481532) 2007 LE
--discovery and notes:
Primary discovered
2007 Jun 07
from
Lincoln Laboratory ETS, New Mexico, USA
by
LINEAR.
Linked to prediscovery observations from 2001 Dec 20. Permanent number assigned 2017 Jan 12.
Companion discovered
2012 May 31
by M. Brozovic, L. A. M. Benner, P. A. Taylor, E. S. Howell, M. C. Nolan, J. L. Margot, J. D. Giorgini, M. W. Busch, S. P. Naidu, C. Nugent, C. Magri, and M. K. Shepard
using
radar
observations from Goldstone, California, USA; Arecibo Observatory, Puerto Rico.
Announced
2012 Jun [B12a].
--Links, more technical:
--Links, less technical:
--Links to ADS abstracts:
- Fieber-Beyer, S. K., Gaffey, M. J., & Hardersen, P. S. 2014, Lunar and Planetary Science Conference Potentially Hazardous Asteroid 2007 LE: Probable Parent Body of the Black Chondrite Rose City and Daughter of Asteroid (6) Hebe
- Brozovic, M., Benner, L. A. M., Taylor, P. A., Howell, E. S., Nolan, M. C., Margot, J. L., Giorgini, J. D., Busch, M. W., Naidu, S. P., Nugent, C., Magri, C., & Shepard, M. K. 2012, Central Bureau Electronic Telegrams 2007 LE
- Hicks, M., Smythe, W., Dombroski, D., Davtyan, T., Teague, S., & Strojia, C. 2012, The Astronomer's Telegram Broadband Photometry of 2007 LE: A Binary Near-Earth Asteroid
©
2012, 2014
by Wm. Robert Johnston.
Last modified
20 September 2014.
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