[Iaude] CBET 5294: (22569) 1998 HK36

quai at eps.harvard.edu quai at eps.harvard.edu
Thu Sep 28 11:08:17 EDT 2023

                                                  Electronic Telegram No. 5294
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

(22569) 1998 HK36
     V. Benishek, Belgrade Astronomical Observatory; P. Pravec, Ondrejov
Observatory; and J. Oey, Blue Mountains Observatory, Leura, NSW, Australia,
report that photometric observations taken with a 0.35-m telescope at the
Sopot Observatory in Serbia and a 0.35-m telescope at the Blue Mountains
Observatory during Aug. 26-Sept. 13 reveal that minor planet (22569) is a
binary system with an orbital period of 15.38 +/- 0.01 hr.  The primary shows
a period of 2.75221 +/- 0.00013 hr and has a lightcurve amplitude of 0.09 mag
at solar phases 4-12 degrees, suggesting a nearly spheroidal shape.  Mutual
eclipse/occultation events that are 0.08 to 0.16 magnitude deep indicate a
lower limit on the secondary-to-primary mean-diameter ratio of 0.28.

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      superseded by text appearing later in the printed IAU Circulars.

                         (C) Copyright 2023 CBAT
2023 September 28                (CBET 5294)              Daniel W. E. Green

More information about the Iaude mailing list