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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク 1623 Vivian ： ウィキペディア英語版 1623 Vivian 1623 Vivian, provisional designation 1948 PL, is a carbonaceous asteroid from the outer region of the asteroid belt, about 27 kilometers in diameter. It was discovered by South African astronomer Ernest Johnson at Union Observatory, Johannesburg on 9 August 1948.〔 The asteroid is a member of the Themis family, a large group of asteroids in the outer main-belt. It orbits the Sun at a distance of 2.7–3.6 AU once every 5 years and 7 months (2,036 days). Its orbit shows an eccentricity of 0.16 and is nearly coplanar to the plane of the ecliptic, inclined by 2 degrees, which is typical for Themistian asteroids. The C-type body has a relatively long rotation period of 20.52 hours〔〔 and an albedo of about 0.08.〔〔 It was named in honor of Vivian Hirst, daughter of British astronomer William P. Hirst, receiver of the Astronomical Society of Southern Africa's Gill Medal and after whom the minor planet 3172 Hirst is named. Hirst calculated the preliminary orbit for this and several other minor planets discovered by Ernest Johnson.〔 == 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「1623 Vivian」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.