[IAUC] CBET 1150: 20071201 : (1453) FENNIA

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                                                  Electronic Telegram No. 1150
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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(1453) FENNIA
     B. D. Warner, Palmer Divide Observatory, Colorado Springs, CO; A. W.
Harris, Space Science Institute; P. Pravec, Ondrejov Observatory; R. D.
Stephens, Goat Mountain Astronomical Research Station, Yucca Valley, CA; D.
Pray, Carbuncle Hill Observatory, Greene, RI; W. Cooney, J. Gross, and D.
Terrell, Sonoita Research Observatory, Sonoita, AZ; S. Gajdos and A. Galad,
Modra Observatory; and Yu. Krugly, Institute of Astronomy of Kharkiv
National University, Main Astronomical Observatory of National Academy of
Science of Ukraine, report that photometric observations made during Nov.
4-23 reveal that minor planet (1453) is a binary system with an orbital
period of 22.99 +/- 0.01 hr.  The primary shows a period of 4.4121 +/-
0.0001 hr, and it has a lightcurve amplitude of 0.18 mag, suggesting a
nearly spheroidal shape.  Mutual eclipse/occultation events indicate a
lower limit on the secondary-to-primary mean-diameter ratio of 0.28 +/-
0.02.


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                         (C) Copyright 2007 CBAT
2007 December 1                  (CBET 1150)              Daniel W. E. Green