[Iaude] CBET 4795: (38079) 1999 HF

quai at eps.harvard.edu quai at eps.harvard.edu
Wed Jun 10 23:30:25 EDT 2020


                                                  Electronic Telegram No. 4795
Central Bureau for Astronomical Telegrams
Mailing address:  Hoffman Lab 209; Harvard University;
 20 Oxford St.; Cambridge, MA  02138; U.S.A.
e-mail:  cbatiau at eps.harvard.edu (alternate cbat at iau.org)
URL http://www.cbat.eps.harvard.edu/index.html
Prepared using the Tamkin Foundation Computer Network


(38079) 1999 HF
     V. Benishek, Belgrade Astronomical Observatory; P. Pravec, Ondrejov
Observatory; J. Oey, Blue Mountains Observatory, Leura, NSW, Australia; W.
Cooney, B. Flanagan, and B. Pellerin, Madrona Peak Observatory, Medina, TX,
U.S.A.; and R. Durkee, Shed of Science South Observatory, Pontotoc, TX,
U.S.A., report that photometric observations taken with a 0.35-m telescope
at the Sopot Observatory in Serbia, a 0.35-m telescope at the Blue Mountains
Observatory, a 0.6-m telescope at the Madrona Peak Observatory, and a 0.50-m
telescope at the Shed of Science South Observatory during Mar. 27-May 24
reveal that minor planet (38079) is a binary system with an orbital period of
16.675 +/- 0.009 hr.  Mutual eclipse/occultation events observed from Mar. 27
to Apr. 11 were 0.57- to 0.67-magnitude deep and they indicated a lower limit
on the secondary-to-primary mean-diameter ratio of 0.83.  Rotations of the
components appear to be synchronous with the orbital motion, and an amplitude
of the combined primary-plus-secondary rotational lightcurve is 0.42 mag at
solar phases 5-15 deg.


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      superseded by text appearing later in the printed IAU Circulars.

                         (C) Copyright 2020 CBAT
2020 June 11                     (CBET 4795)              Daniel W. E. Green



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