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2064 Thomsen, provisional designation 1942 RQ, is a stony, eccentric asteroid classified as Mars-crosser, about 14 kilometers in diameter. It was discovered by Finnish female astronomer Liisi Oterma at Turku Observatory, Finland on 8 September 1942.〔 The S-type asteroid orbits the Sun at a distance of 1.5–2.9 AU once every 3.22 years (1,175 days). Its orbit shows an eccentricity of 0.33 and is tilted by 6 degrees to the plane of the ecliptic. It has a rotation period of 4.233 hours〔〔 〔 and an albedo of 0.055 and 0.16, as measured by the IRAS and Akari surveys, respectively.〔〔 It was named in memory of New Zealand astronomer Ivan Leslie Thomsen (1910–1969), director of the Carter Observatory, Wellington, from 1945 until he was appointed director of the Mount John University Observatory only two months before his death. He was an enthusiastic coordinator of New Zealand's astronomy and his efforts eventually led to the minor-planet observing program with the Carter Observatory 41-cm reflector. It was the 1977 rediscovery at the Carter Observatory that allowed this minor planet to be numbered.〔 The asteroid approached Mars within a distances of 15 million kilometers in 2103.〔 == 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「2064 Thomsen」の詳細全文を読む スポンサード リンク
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