(218144) 2002 RL66
compiled by Wm. Robert Johnston
last updated 3 October 2010
Orbital elements and other data (Assumed or derived values in parenthesis, my estimates in italics and parenthesis. Source identifications in brackets, see this link for sources):
orbital data, primary (osculating elements) [JPL]:
|
semimajor axis a: |
2.3060848 AU
| |
orbital period P: |
3.50 y (=1,279.1201 d)
| |
eccentricity e: |
0.3402192
| |
perihelion distance q: |
1.5215105 AU
| |
aphelion distance Q: |
3.0906591 AU
| |
inclination i: |
22.73832°
| |
argument of perihelion omega: |
74.94230°
| |
ascending node OMEGA: |
24.02726°
| |
mean anomaly M: |
55.56897°
| |
perihelion passage TP: |
2010 JAN 06.5573
| |
Epoch: |
23 JUL 2010
| |
data arc: |
2002-2009 (178 obs.)
|
orbital data, secondary:
|
semimajor axis a: |
?
| |
semimajor axis/primary radius a/Rp: |
?
| |
orbital period P: |
2.492 ± 0.001 h [W10a]
| |
eccentricity e: |
?
| |
other data, primary:
|
diameter: |
(~2.6 km)
| |
absolute magnitude H: |
15.5 [JPL]
| |
rotation period: |
587.0 ± 10.0 h [W10a]
| |
amplitude delta M: |
0.04; 0.25 [W10a]
| |
color index B-V: |
?
| |
color index V-R: |
?
| |
color index R-I: |
?
| |
slope parameter G: |
(0.15) assumed
| |
geometric albedo: |
(0.16) assumed
| |
mass: |
?
| |
density: |
?
| |
type: |
?
|
other data, secondary:
|
diameter: |
?
| |
diameter ratio Ds/Dp: |
?
| |
component magnitude difference: |
?
| |
rotation period: |
?
|
|
----discovery and notes:
Primary discovered 6 September 2002 by the LINEAR program at Socorro, New Mexico.
Companion reported July 2010 by Brian D. Warner, Petr Pravec, Peter Kusnirak, and Alan Harris based on observations from March 2010 with observations from 18 November-11 December 2009.
--Links, more technical:
--Links, less technical:
--Links to ADS abstracts:
- Warner, B. D. 2010, Central Bureau Electronic Telegrams (8026) 1991 JA_1
- Warner, Brian D., Pravec, Petr, Kusnirak, Peter, & Harris, Alan 2010, Minor Planet Bulletin A Tale of Two Asteroids: (35055) 1984 RB and (218144) 2002 RL66
- Warner, Brian D. 2010, Minor Planet Bulletin Asteroid Lightcurve Analysis at the Palmer Divide Observatory: 2009 September-December
© 2010 by Wm. Robert Johnston.
Last modified 3 October 2010.
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