Electronic Telegram No. 389 Central Bureau for Astronomical Telegrams INTERNATIONAL ASTRONOMICAL UNION M.S. 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A. IAUSUBS@CFA.HARVARD.EDU or FAX 617-495-7231 (subscriptions) CBAT@CFA.HARVARD.EDU (science) URL http://cfa-www.harvard.edu/iau/cbat.html (6084) BASCOM D. Higgins, Canberra, Australia; P. Pravec, P. Kusnirak, and L. Sarounova, Ondrejov Observatory; and S. Gajdos, A. Galad, and J. Vilagi, Modra Observatory, report that photometric observations obtained during 2005 Dec. 29-2006 Feb. 2 reveal that minor planet (6084) is a binary system with an orbital period of 43.5 hours. The primary rotates with a period of 2.7454 hours, and it has a lightcurve amplitude of 0.22 mag. Mutual eclipse/occultation events that are 0.12- to 0.18-mag deep indicate a secondary-to-primary mean-diameter ratio of 0.37 +/-0.02. The mean absolute R magnitude of the system is 12.8 +/- 0.1. NOTE: These 'Central Bureau Electronic Telegrams' are sometimes superseded by text appearing later in the printed IAU Circulars. (C) Copyright 2006 CBAT 2006 February 6 (CBET 389) Daniel W. E. Green