Kutaïssi is a stony member of the Koronis family, a group consisting of about 200 known bodies, thought to have been formed at least two billion years ago in a catastrophic collision between two larger bodies. It orbits the Sun in the outer main-belt at a distance of 2.7–3.0 AU once every 4 years and 10 months (1,766 days). Its orbit has an eccentricity of 0.06 and an inclination of 2° with respect to the ecliptic.[1]
The first rotational light curveofKutaïssi was obtained from photometric observations by American astronomer Richard Binzel in February 1984. It gave a rotation period of 3.60 hours with a brightness variation of 0.40 magnitude (U=3).[9] In 1987 and 2004, a group of American astronomers obtained concurring light curves with a period of 3.624±0.001 and 3.624±0.006 hours and an amplitude of 0.30 and 0.42 magnitude, respectively (U=2/3).[10][12]
According to the surveys carried out by the Infrared Astronomical Satellite IRAS, the Japanese Akari satellite, and NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Kutaïssi measures between 19.20 and 25.62 kilometers in diameter, and its surface has an albedo between 0.1374 and 0.245.[4][5][6][7][8] The Collaborative Asteroid Lightcurve Link derives an albedo of 0.1216 and a diameter of 25.53 kilometers based on an absolute magnitude of 10.87.[3]
^ 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)
^ abSlivan, Stephen M.; Binzel, Richard P.; Kaasalainen, Mikko; Hock, Andrew N.; Klesman, Alison J.; Eckelman, Laura J.; et al. (April 2009). "Spin vectors in the Koronis family. II. Additional clustered spins, and one stray". Icarus. 200 (2): 514–530. Bibcode:2009Icar..200..514S. doi:10.1016/j.icarus.2008.11.025.
