Ostanina orbits the Sun in the outer main-belt at a distance of 2.5–3.8 AU once every 5 years and 6 months (2,013 days; semi-major axis of 3.12 AU). Its orbit has an eccentricity of 0.21 and an inclination of 14° with respect to the ecliptic.[3]
In June 2011, a rotational lightcurve of Ostanina was obtained from photometric observations by French and Swiss astronomers Pierre Antonini, François Colas, Valery Lainey, Laurène Beauvalet and Raoul Behrend. Lightcurve analysis gave a rotation period of 8.4001±0.0002 hours with a very high brightness variation of 1.11 magnitude (U=3).[10] A high brightness amplitude is indicative of a non-spheroidal, elongated shape. Other well defined rotation periods of 8.399 and 8.397 hours were obtained by Robert Stephens at the Center for Solar System Studies (U81) in California in 2017, and by V. G. Shevchenko at the Kharkov Observatory (101) in 1996, respectively (U=3/3).[17][a][b]
Additional period determinations: 6+ hours by Jean-Gabriel Bosch at the Collonges Observatory (178) (U=2),[10] 6.145 hours at the Catania and Pino Torinese observatories in 2000 (U=1),[18] 8.3945 hours by René Roy in 2016 (U=3-),[10] 8.397 hours by V. G. Chiorny in 2003 and 2007 (U=n.a./2+),[19][c] and 8.4 hours by Roberto Crippa and Federico Manzini at the Sozzago Astronomical Station (A12) in 2010 (U=2+).[10]
Diameter and albedo
According to the surveys carried out by the Infrared Astronomical Satellite IRAS, the Japanese Akari satellite and the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Ostanina measures between 40.6 and 43.6 kilometers in diameter and its surface has an albedo between 0.049 and 0.061.[5][6][7][8][9] The Collaborative Asteroid Lightcurve Link adopts the results obtained by IRAS, that is, an albedo of 0.0545 and diameter of 41.24 kilometers using an absolute magnitude of 10.7.[13]
^ abcdUsui, Fumihiko; Kuroda, Daisuke; Müller, Thomas G.; Hasegawa, Sunao; Ishiguro, Masateru; Ootsubo, Takafumi; et al. (October 2011). "Asteroid Catalog Using Akari: AKARI/IRC Mid-Infrared Asteroid Survey". Publications of the Astronomical Society of Japan. 63 (5): 1117–1138. Bibcode:2011PASJ...63.1117U. doi:10.1093/pasj/63.5.1117. (online, AcuA catalog p. 153)
^ abcdTedesco, E. F.; Noah, P. V.; Noah, M.; Price, S. D. (October 2004). "IRAS Minor Planet Survey V6.0". NASA Planetary Data System – IRAS-A-FPA-3-RDR-IMPS-V6.0: IRAS–A–FPA–3–RDR–IMPS–V6.0. Bibcode:2004PDSS...12.....T. Retrieved 14 December 2018.
^ abcdMainzer, A. K.; Bauer, J. M.; Cutri, R. M.; Grav, T.; Kramer, E. A.; Masiero, J. R.; et al. (June 2016). "NEOWISE Diameters and Albedos V1.0". NASA Planetary Data System: EAR–A–COMPIL–5–NEOWISEDIAM–V1.0. Bibcode:2016PDSS..247.....M. Retrieved 14 December 2018.