Electronic Telegram No. 384
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


(7088) ISHTAR
     V. Reddy, Department of Space Studies, University of North
Dakota, Grand Forks; R. Dyvig, Quinn, SD; P. Pravec and P. Kusnirak,
Ondrejov Observatory; and S. Gajdos, A. Galad, and L. Kornos, Modra
Observatory, report that photometric observations obtained during
2006 Jan. 23 to 29 reveal that minor planet (7088) is a binary
system with an orbital period of 20.65 +/- 0.02 hours.  The primary
rotates with a period of 2.6790 +/- 0.0002 hours, and its
lightcurve amplitude of 0.11 mag is indicative of a nearly spheroidal
shape.  The secondary is moderately elongated, and it rotates
synchronously with orbital motion.  Mutual eclipse/occultation events
that are 0.18- to 0.21-mag deep indicate a secondary-to-primary
mean-diameter ratio of 0.42 +/- 0.02.


NOTE: These 'Central Bureau Electronic Telegrams' are sometimes
      superseded by text appearing later in the printed IAU Circulars.

                         (C) Copyright 2006 CBAT
2006 January 31                  (CBET 384)               Daniel W. E. Green