CBAT No.1165, (3673) Levy, 12 December 2007 Photometric
observations obtained during 5–9 December 2007, show that 3673 Levy is a binary system with an orbital period of 21.6 hours. The primary has a period of 2.6879±0.0005 hours, and it has a lightcurve brightness variation of 0.13 magnitude, indicative of a nearly spheroidal shape. Mutual eclipse/occultation events suggest a secondary-to-primary mean-diameter ratio of 0.28±0.03. further observations are required to refined the binary system's parameters. Reported by: D. Pray, Carbuncle Hill Observatory, Greene, RI, U.S.A.; P. Pravec and P. Kusnirak, Ondrejov Observatory; and R. Stephens, Goat Mountain Astronomical Research Station, Yucca Valley, CA, U.S.A.Central Bureau for Astronomical Telegrams No. 1165