worked as a young astronomer at Heidelberg. Physical characteristics In the Bus–Binzel SMASS classification, Otila is an Sa-subtype that transitions from a common, stony S-type to an uncommon A-type asteroid, while in the Bus-DeMeo-taxonomy, it is an Sw-type asteroid, where the "w" notation is used for a objects with a high spectral slope (greater than 0.25). Rotation period In April 2007, a rotational lightcurve of Otila was obtained from photometric observations by Julian Oey. Lightcurve analysis gave a rotation period of hours with a brightness amplitude of magnitude (). Diameter and albedo According to the survey carried out by the Japanese Akari satellite and the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer (WISE), Otila measures () and () kilometers in diameter and its surface has an albedo of () and (), respectively. The Collaborative Asteroid Lightcurve Link assumes a standard albedo for members of the Flora family of 0.24 and calculates a diameter of 10.80 kilometers based on an absolute magnitude of 12.0. Other publications by the WISE team give a mean-diameter of () and () kilometers with a corresponding albedo of () and (). References External links Do Slivan states exist in the Flora family?. I. Photometric survey of the Flora region, Astronomy & Astrophysics, A. Kryszczynska Lightcurve Database Query (LCDB), at www.minorplanet.info Dictionary of Minor Planet Names, Google books Discovery Circumstances: Numbered Minor Planets (1)-(5000) – Minor Planet Center 000913 Discoveries by Karl Wilhelm Reinmuth Named minor planets 000913 19190519