IAUC
Circular No. 8592
(76818) 2000 RG_79
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B. D. Warner, Colorado Springs, CO; P. Pravec, Ondrejov
Observatory; and D. Pray, Coventry, RI, report that photometric
observations obtained during Aug. 7-28 show that the minor planet
(76818) is a binary system with an orbital period of 14.125 +/-
0.01 hr. The primary rotates with a period 3.1664 +/- 0.0002 hr,
and its lightcurve amplitude of 0.14 mag is indicative of a nearly
spheroid shape. Mutual eclipse/occultation events that are about
0.14 mag deep indicate a secondary-to-primary mean-diameter ratio
of 0.37 +/- 0.03.
