(2131) Mayall
Abstract
B. Warner, Palmer Divide Observatory; P. Pravec, P. Kusnirak, and K. Hornoch, Ondrejov Observatory; J. Vilagi, L. Kornos, S. Gajdos, P. Veres, and A. Galad, Modra Observatory; W. Cooney, J. Gross, and D. Terrell, Sonoita Research Observatory, Sonoita, AZ; and Yu. Krugly and V. Chiorny, Kharkiv Observatory, report that photometric observations obtained during Nov. 30-Dec. 16 reveal that minor planet (2131) is a binary system with an orbital period of 23.48 +/- 0.01 hr. The primary shows a period of 2.5678 +/- 0.0001 hr and has a lightcurve amplitude of 0.09 mag, suggesting a nearly spheroidal shape. The secondary rotates synchronously with the orbital motion, and its lightcurve component has an amplitude of 0.05 mag. Observed mutual-eclipse/occultation events indicate a secondary-to-primary mean-diameter ratio of 0.28 +/- 0.02.
- Publication:
-
Central Bureau Electronic Telegrams
- Pub Date:
- December 2009
- Bibcode:
- 2009CBET.2105....1W