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1796 Riga
1796 Riga, provisional designation 1966 KB, is a dark asteroid from the outer region of the asteroid belt, about 74 kilometers in diameter. It was discovered by Russian astronomer Nikolai Chernykh at the Crimean Astrophysical Observatory in Nauchnyj on 16 May 1966.〔
The carbonaceous asteroid is classified as a XFCU and Cb subtype in the Tholen and SMASS taxonomy scheme, respectively. It orbits the Sun at a distance of 3.2–3.5 AU once every 6 years and 2 months (2,244 days). Its orbit shows an eccentricity of 0.06 and is notably tilted by 23 degrees to the plane of the ecliptic. It has a rather long rotation period of 10.6 hours,〔〔 with an alternative observation that gave 16 hours.〔 The body has a low geometric albedo around 0.04, according to the surveys carried out by IRAS, Akari, WISE and NEOWISE.〔〔〔〔
The minor planet was named after Riga, the capital of Latvia and site of the Astronomical Observatory of the University of Latvia. The name was proposed by Matiss A. Dirikis, who was a member of the observatory at the Latvian State University, and after whom the asteroid 1805 Dirikis is named.〔
== References ==
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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