[IAUC] CBET 1127: 20071109 : (8116) JEANPERRIN

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                                                  Electronic Telegram No. 1127
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
M.S. 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
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CBAT en CFA.HARVARD.EDU (science)
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(8116) JEANPERRIN
     D. Higgins, Canberra, Australia; P. Pravec, P. Kusnirak, and K.
Hornoch, Ondrejov Observatory; M. Husarik, M. Pikler, and G. Cervak,
Skalnate Pleso Observatory; D. Pray, Carbuncle Hill Observatory, Greene,
RI; S. Gajdos, Modra Observatory; Yu. Krugly, Institute of Astronomy,
Kharkiv National University, National Academy of Science of Ukraine;
A. Marshalkina, Ulugh Beg Astronomical Institute, Uzbek Academy of
Sciences; R. Stephens, Goat Mountain Astronomical Research Station, Yucca
Valley, CA; F. Colas, Pic du Midi Observatory; and W. Cooney, J. Gross,
and D. Terrell, Sonoita Research Observatory, Sonoita, AZ, report that
photometric observations obtained during Oct. 4-Nov. 7 reveal that minor
planet (8116) is a binary system with an orbital period of 36.15 +/- 0.02
hr.  The primary shows a period of 3.6169 +/- 0.0002 hr, and it has a
lightcurve amplitude of 0.09 mag, suggesting a nearly spheroidal shape.
Mutual eclipse/occultation events indicate a lower limit on the
secondary-to-primary mean-diameter ratio of 0.33.  Calibrated data give
an estimated mean absolute magnitude H_R = 13.52 +/- 0.13, assuming
G = 0.15 +/- 0.2.


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                         (C) Copyright 2007 CBAT
2007 November 9                  (CBET 1127)              Daniel W. E. Green