In April 2016, a rotational lightcurve of Duboshin was obtained from photometric observations by Robert Stephens at the Center for Solar System Studies (U81) in California. Lightcurve analysis gave a long rotation period of 50.78 hours with a brightness amplitude of 0.15 magnitude, indicative for a nearly spherical shape (U=2+).[9][a] While not being a slow rotator, it has a notably longer period than that seen for most other asteroids, which rotate every 2 to 20 hours once around their axis.
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 WISE telescope, Duboshin measures between 50.122 and 58.53 kilometers in diameter and its surface has an albedo between 0.044 and 0.06.[6][7][8]
The Collaborative Asteroid Lightcurve Link adopts the results obtained by IRAS, that is, an albedo of 0.0496 and a diameter of 54.94 kilometers based on an absolute magnitude of 10.18.[4]
Naming
This minor planet was named after Russian astronomer Georgij Nikolaevich Duboshin (1904–1986), expert on celestial mechanics, author of several textbooks, and former president of IAU's Commission 7, Celestial Mechanics and Dynamical Astronomy in the early 1970s.[2][11] The official naming citation was published by the Minor Planet Center on 1 December 1982 (M.P.C. 7471).[12]
Notes
^ abLightcurve plot of (2312) Duboshin, obtained by R. D. Stephens at Center for Solar System Studies (CS3) with 659 data points taken between 19 March and 16 April 2016. Rotation period 50.78±0.03 hours with a brightness amplitude of 0.15±0.02 mag. Quality code of 2+. Summary figures at the LCDB and CS3