The rotation period for this asteroid is close to a day long, so the construction of a complete light curve requires photometric observations from multiple locations at widely spaced latitudes. This task was completed in January and February, 2011, yielding a synodic rotation period of 23.670 ± 0.001 h, with a brightness variation of 0.20 ± 0.02 in magnitude[3]
References
^Noah Webster (1884) A Practical Dictionary of the English Language
^ abStephens, Robert D.; et al. (October 2011), "The Lightcurve for 202 Chryseis", The Minor Planet Bulletin, 38 (4): 208–209, Bibcode:2011MPBu...38..208S.