Observatory Code E17 (Leura) Long 150d 20' 30" Lat -33d 42' 22" Altitude 950m Time UT+10h
Observatory Code E19 ( Kingsgrove) Long 151d 5' 45" Lat -33d 56' 51" Altitude 60m Time: UT+10h
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Observatory Code E17 (Leura) Long 150d 20' 30" Lat -33d 42' 22" Altitude 950m Time UT+10h Observatory Code E19 ( Kingsgrove) Long 151d 5' 45" Lat -33d 56' 51" Altitude 60m Time: UT+10h
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Electronic Telegram No. 1087 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://www.cfa.harvard.edu/iau/cbat.html
(10208) 1997 QN1 J. Oey, Leura, N.S.W., Australia; P. Pravec and P. Kusnirak, Ondrejov Observatory; Yu. Krugly and V. Chiorny, Institute of Astronomy of Kharkiv National University, Main Astronomical Observatory, National Academy of Science of Ukraine; and J. Ries, McDonald Observatory, report that photometric observations obtained during Aug. 6-Sept. 18 reveal that minor planet (10208) is a binary system with an orbital period of 58.55 +/- 0.02 hr. The primary shows a period of 3.3484 +/- 0.0001 hr, and it has a light- curve amplitude of 0.13 mag. Mutual eclipse/occultation events, with a depth of 0.21 mag on Sept. 15, indicate a secondary-to-primary mean-diameter ratio of 0.46 +/- 0.02. Calibrated data give an estimated mean absolute magnitude H_R = 14.2 +/- 0.2, assuming G = 0.15 +/- 0.2.
NOTE: These 'Central Bureau Electronic Telegrams' are sometimes superseded by text appearing later in the printed IAU Circulars. (C) Copyright 2007 CBAT 2007 September 25 (CBET 1087) Daniel W. E. Green To un-subscribe from the IAU Circulars Mailing List for ASNSW Members, please send a blank email to: iaucirculars-unsubscribe@asnsw.com
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