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1694 Kaiser, provisional designation 1934 SB, is an eccentric, carbonaceous asteroid from the inner regions of the asteroid belt, roughly 16 kilometers in diameter. It was discovered by Dutch astronomer Hendrik van Gent at the Leiden Southern Station, annex to the Johannesburg Observatory in South Africa on 29 September 1934.〔 The asteroid orbits the Sun at a distance of 1.8–3.0 AU once every 3.71 years (1,354 days). Its eccentric orbit of 0.26 is inclined by 11 degrees towards the plane of the ecliptic. The GC-/C-type asteroid has a noticeably high geometric albedo of and , determined by the Akari and NEOWISE surveys, respectively, while the Lightcurve Database project assumes a much lower value of 0.06.〔〔〔 Photometric observations in 2006 at the ''Palmer Divide Observatory'' in Colorado ''(see video in )'' were used to generate a light-curve with a period of hours and a variation in brightness of magnitude.〔 A refined observation in 2012 gave a period of hours with a higher amplitude of .〔 The asteroid was named in honor of Dutch astronomer Frederik Kaiser (1808–1872), the director of the Leiden Observatory from 1837–1872. He founded the new Leiden Observatory and stimulated Dutch astronomical research. Frederick Kaiser is also honored by the lunar and Martian craters ''Kaiser''.〔 Originally, the asteroid was erroneously named ''Kapteyn'' (MPC 2822), and only later it was noticed that the Duch astronomer Jacobus Kapteyn was already honored by the minor planet 818 Kapteynia. == References == }} 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「1694 Kaiser」の詳細全文を読む スポンサード リンク
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