Discovered by P. F. Shajn MPC designation 1735 ITA Discovered 10 September 1948 Orbits Sun | Discovery date 10 September 1948 Minor planet category main-belt · (outer) Absolute magnitude 10 Asteroid group Asteroid belt | |
Named after Institute for Theoretical Astronomy (USSR) Alternative names 1948 RJ1 · 1929 DA1931 RF1 · 1934 BC1935 GC · 1937 TN1948 TB1 · 1948 TK1951 DL · 1951 EY1952 HN2 · 1952 JBA907 GC People also search for Sun, 1654 Bojeva, 1954 Kukarkin | ||
1735 ITA, provisional designation 1948 RJ1, is a carbonaceous asteroid from the outer region of the asteroid belt, approximately 62 kilometers in diameter. It was discovered on 10 September 1948, by Soviet–Russian astronomer Pelageya Shajn at the Simeiz Observatory located on the Crimean peninsula.
The C-type asteroid orbits the Sun at a distance of 2.7–3.5 AU once every 5 years and 7 months (2,030 days). Its orbit has an eccentricity of 0.13 and an inclination of 16° with respect to the ecliptic. ITA was first identified as A907 GC at Heidelberg Observatory in 1907, extending the body's observation arc by 41 years prior to its official discovery observation.
In November 2004, a rotational light-curve was obtained by French amateur astronomer René Roy, gave a rotation period of 12.599 hours with a brightness variation of 0.27 magnitude (U=3-). In March 2007, astronomers Laurent Brunetto and Jean-Gabriel Bosch derived a concurring period of 12.6 hours with and amplitude of 0.40 magnitude (U=2-) A 2016-published light-curve from the Lowell Photometric Database gave a period of 12.6103 hours (U=n.a.).
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, ITA measures between 61.87 and 66.09 kilometers in diameter, and its surface has an albedo between 0.051 and 0.079. The Collaborative Asteroid Lightcurve Link derives an albedo of 0.0461 and a diameter of 61.93 kilometers based on an absolute magnitude of 10.0.
This minor planet was named in 1979, on the occasion of the 60th anniversary of the founding of the USSR Academy of Sciences' Institute for Theoretical Astronomy (ITA), in what was then Leningrad. Naming citation was published on 1 June 1980 (M.P.C. 5357).