(2006) Polonskaya
Abstract
D. Pray, Greene, RI; P. Pravec and P. Kusnirak, Ondrejov Observatory; and W. Cooney, J. Gross and D. Terrell, Sonoita Research Observatory, report that observations obtained during Nov. 1-13 show that the minor planet (2006) consists of a pair of bodies orbiting each other with a period of 19.15 +/- 0.02 hr and producing mutual eclipse/occultation events 0.06-mag deep. There are present two rotational lightcurves with periods of 3.1183 +/- 0.0002 and 6.656 +/- 0.001 hr, with amplitudes of 0.08 and 0.06 mag, respectively, that persist during the mutual events. This suggests that either the system is binary with both bodies rotating non- synchronously with the orbital motion or there is a third body producing the additional period. A lower limit on the mean- diameter ratio of the eclipsing pair is 0.22. Further observations are needed to fully resolve the system.
- Publication:
-
International Astronomical Union Circular
- Pub Date:
- November 2005
- Bibcode:
- 2005IAUC.8630....3P