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Asteroids with Satellites Database--Johnston's Archive

compiled by Wm. Robert Johnston
last updated20 September 2014

--Orbital and physical data--

(Seethis page for definitions of quantities; source codes in brackets, seethis link for full references; *A, *D, and *E indicate assumed, derived, and estimated values, respectively.)

dynamical type, primary:Mars crossing asteroid

orbital data, primary (osculating elements)[JPL]:

semimajor axisa:	2.305224311 AU
orbital periodP:	3.500080145 yr (= 1278.404273 d)
eccentricitye:	0.34082360
perihelion distanceq:	1.51954947 AU
aphelion distanceQ:	3.090899156 AU
inclinationi:	22.736624°
argument of perihelionω:	74.906794°
ascending nodeΩ:	24.014439°
mean anomalyM:	89.827822°
perihelion passageT_P:	2013 Jul 08.01035
Epoch:	2014 May 23
data arc:	2002-2014(313 obs.)
Earth MOID:	0.679232 AU
Jupiter Tisserand invariantT_J:	3.411

orbital data, secondary:

other data, system (combined):

other data, primary:

diameterd_p:	3.46 km [*E]
rotation periodRP_p:	587± 10h [W10d]
amplitude in mag., rotationalΔM:	0.04 [W10d]
amplitude in mag., mutual eventsΔM:	0.25 [W10d]
pole directionΒ, λ:	?,?

other data, secondary:

--(218144) 2002 RL66 --discovery and notes:

Primary discovered2002 Sep 06from Socorro, New Mexico, USAby LINEAR.Permanent number assigned 2009 Sep 04.

Companion discovered2010 Mar usinglightcurve observations.Announced2010 Jul .

--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 BulletinA Tale of Two Asteroids: (35055) 1984 RB and (218144) 2002 RL66
Warner, Brian D. 2010, Minor Planet BulletinAsteroid Lightcurve Analysis at the Palmer Divide Observatory: 2009 September-December

©2010, 2014by Wm. Robert Johnston.
Last modified20 September 2014.
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