(5481) Kiuchi
Abstract
P. Kusnirak and P. Pravec, Ondrejov Observatory; J. Oey, Leura, N.S.W., Australia; R. Stephens, Goat Mountain Astronomical Research Station, Yucca Valley, CA, U.S.A.; M. Husarik, Skalnate Pleso Observatory; and J. Ries, McDonald Observatory, report that photometric observations obtained during Mar. 13 to Apr. 6 reveal that minor planet (5481) is a binary system with an orbital period of 20.90 +/- 0.01 hr. The primary shows a period of 3.6196 +/- 0.0002 hr, and it has a lightcurve amplitude of 0.10 mag, suggesting a nearly spheroidal shape. Mutual eclipse/occultation events indicate a secondary-to-primary mean-diameter ratio of 0.33 +/- 0.02. The mean absolute R magnitude is H = 12.98 +/- 0.1, assuming G = 0.15 +/- 0.2.
- Publication:
-
Central Bureau Electronic Telegrams
- Pub Date:
- April 2008
- Bibcode:
- 2008CBET.1339....1K