Photometric observations during 2010 showed a synodic rotation period of 11.98 ± 0.02 hours and a brightness variation of 0.28 ± 0.02 in magnitude. Because the rotation period is close to twelve hours, observations were needed at two widely separated observatories in order to build a light curve for the complete rotation.[3]
References
^'Menippa' in Noah Webster (1884) A Practical Dictionary of the English Language
^Warner, Brian D.; Higgins, David (October 2010), "Lightcurve Analysis of 188 Menippe", The Minor Planet Bulletin, 37 (4): 143–144, Bibcode:2010MPBu...37..143W.
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