Electronic Telegram No. 4326
Central Bureau for Astronomical Telegrams
Mailing address:  Hoffman Lab 209; Harvard University;
 20 Oxford St.; Cambridge, MA  02138; U.S.A.
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Prepared using the Tamkin Foundation Computer Network


(5536) HONEYCUTT
      V. Benishek, Belgrade Astronomical Observatory; P. Pravec, Ondrejov
Observatory; A. Aznar, Isaac Aznar Observatory, Centro Astronomico del
Alto Turia, Aras de los Olmos, Spain; A. Marchini, R. Papini, and F.
Salvaggio, Dipartimento di Scienze Fisiche, Della Terra e Dell'Ambiente,
University of Siena; D. Pray, Sugarloaf Mountain Observatory, South Deerfield,
MA, U.S.A.; and R. Montaigut and A. Leroy, OPERA Observatory, France, report
that photometric observations taken with a 0.35-m telescope at the Sopot
Observatory in Serbia, a 0.35-m telescope at the Isaac Aznar Observatory, a
0.30-m telescope at the Astronomical Observatory of the University of Siena, a
0.50-m telescope at the Sugarloaf Mountain Observatory, and a 0.20-m telescope
at the OPERA Observatory during 2016 Sept. 13-29 reveal that minor planet
(5536) is a binary system with an orbital period of 16.325 +/- 0.005 hr.  The
primary shows a period of 3.5830 +/- 0.0002 hr and has a lightcurve amplitude
of 0.09 mag at solar phases 11-18 degrees, suggesting a nearly spheroidal
shape.  Mutual eclipse/occultation events that are 0.10- to 0.19-magnitude
deep indicate a secondary-to-primary mean-diameter ratio of 0.31 +/- 0.02.


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      superseded by text appearing later in the printed IAU Circulars.

                         (C) Copyright 2016 CBAT
2016 October 1                   (CBET 4326)              Daniel W. E. Green