1621 Druzhba
1621 Druzhba (1926 TM) is a main-belt asteroid discovered on October 1, 1926 by S. Belyavskij at Simeis. Photometric observations made in 2006 at the Oakley Observatory in Terre Haute, Indiana found a light curve period of 47.9 ± 0.5 hours, with variation in brightness of less than one magnitude.[1] In 2010, observations were made at the Goat Mountain Astronomical Research Station in Rancho Cucamonga, California gave a period estimate of 47.9 hours, although this may be a half rotation period instead.[2] The long rotation period makes accurate estimates more difficult to obtain, so further data is needed to reduce the margin of error.[1]
References
- ↑ 1.0 1.1 Ditteon, Richard; Hawkins, Scot (September 2007), "Asteroid Lightcurve Analysis at the Oakley Observatory - October-November 2006", Bulletin of the Minor Planets Section of the Association of Lunar and Planetary Observers 34 (3): 59–64, Bibcode:2007MPBu...34...59D.
- ↑ Stephens, Robert D. (January 2010), "Asteroids Observed from GMARS and Santana Observatories: 2009 June - September", Bulletin of the Minor Planets Section of the Association of Lunar and Planetary Observers 37 (1): 28–29, Bibcode:2010MPBu...37...28S.
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