Lightcurves and Derived Rotation Periods for 18 Melpomene, 234 Barbara 236 Honoria, 520 Franziska, and 525 Adelaide
Abstract
From new lightcurves obtained near their 2014 oppositions rotation periods and amplitudes are found for 18 Melpomene 11.571 ± 0.002 hours, 0.16 ± 0.02 magnitudes; 234 Barbara 26.473 ± 0.002 hours, amplitude 0.16 ± 0.02 magnitudes; 236 Honoria 12.336 ± 0.001 hours, 0.23 ± 0.02 magnitudes; 520 Franziska 16.507 ± 0.001 hours, 0.35 ± 0.02 magnitudes; and 525 Adelaide 19.967 ± 0.001 hours, amplitude 0.35 ± 0.03 magnitudes near celestial longitude 180 degrees and 0.02 ± 0.01 magnitudes at celestial longitude 57 degrees, latitude -4 degrees. The amplitude - aspect method strongly suggests the latter position lies within a few degrees of one of the two rotational poles.
- Publication:
-
Minor Planet Bulletin
- Pub Date:
- July 2014
- Bibcode:
- 2014MPBu...41..155P