[Iaude] CBET 5331: (82256) 2001 KM_8

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                                                  Electronic Telegram No. 5331
Central Bureau for Astronomical Telegrams
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(82256) 2001 KM_8
     V. Benishek, Belgrade Astronomical Observatory; and P. Pravec, Ondrejov
Observatory, report that photometric observations taken with a 0.35-m
telescope at the Sopot Observatory in Serbia during 2023 Nov. 7-2024 Jan. 4
reveal that minor planet (82256) is a binary system with an orbital period of
43.17 +/- 0.06 hr.  The primary shows a period of 3.0362 +/- 0.0003 hr and
has a lightcurve amplitude of 0.37 mag at solar phases 4-11 degrees.  Mutual
eclipse/occultation events that are 0.08 magnitude deep indicate a lower
limit on the secondary-to-primary mean-diameter ratio of 0.28.


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2021 January 15                  (CBET 5331)              Daniel W. E. Green