[IAUC] CBET 824: 20070130 : (2478) TOKAI

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                                                  Electronic Telegram No. 824
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
M.S. 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
IAUSUBS en CFA.HARVARD.EDU or FAX 617-495-7231 (subscriptions)
CBAT en CFA.HARVARD.EDU (science)
URL http://cfa-www.harvard.edu/iau/cbat.html


(2478) TOKAI
     D. Higgins, Canberra, Australia; P. Pravec and P. Kusnirak, Ondrejov
Observatory; B. Warner, Palmer Divide Observatory, Colorado Springs, CO;
A. Galad, Modra Observatory; J. Oey, Leura, N.S.W., Australia; R.
Goncalves, Linhaceira, Tomar, Portugal; and W. Cooney, J. Gross, and D.
Terrell, Sonoita Research Observatory, Sonoita, AZ, report that photometric
observations obtained during Jan. 20-28 reveal that minor planet (2478)
is a synchronous binary system with a period of 25.885 +/- 0.007 hours.
A combined rotation lightcurve has an amplitude of 0.41 mag, and
superimposed mutual events indicate a lower limit on a secondary-to-primary
mean-diameter ratio of 0.72.


NOTE: These 'Central Bureau Electronic Telegrams' are sometimes
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                         (C) Copyright 2007 CBAT
2007 January 30                  (CBET 824)               Daniel W. E. Green