5.94819 hours using data from the Uppsala Asteroid Photometric Catalogue, the Palomar Transient Factory survey, and individual observers (such as above), as well as sparse-in-time photometry from the NOFS, the Catalina Sky Survey, and the La Palma surveys . The study also determined two spin axes of (183.0°, −50.0°) and (41.0°, −39.0°) in ecliptic coordinates (λ, β). Diameter and albedo According to the survey carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Otthild measures () kilometers in diameter and its surface has an albedo of (). The Japanese Akari satellite and the Infrared Astronomical Satellite IRAS determined a somewhat larger diameter of () and () kilometers with an albedo of () and (), respectively. The Collaborative Asteroid Lightcurve Link derives an albedo of 0.2136 and a diameter of 24.36 kilometers based on an absolute magnitude of 10.36. Notes References External links Shape Models of (994) Otthild, DAMIT, Astronomical Institute of the Charles University, Josef Ďurech, Vojtěch Sidorin Asteroid (994) Otthild, 3D Asteroid Catalogue 3D Diagram of the orbit of 994 Otthild, in-the-sky.org 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 000994 Discoveries by Karl Wilhelm Reinmuth Named minor planets 000994 19230318