| 翻訳と辞書 |
| 1781 Van Biesbroeck ： ウィキペディア英語版 |
1781 Van Biesbroeck
1781 Van Biesbroeck, provisional designation A906 UB, is an asteroid from the inner regions of the asteroid belt. It was discovered on 17 October 1906 by German astronomer August Kopff at Heidelberg Observatory in southern Germany.〔
The asteroid orbits the Sun at a distance of 2.1–2.7 AU once every 3 years and 9 months (1,355 days). Its orbit shows an eccentricity of 0.11 and is tilted by 7 degrees to the plane of the ecliptic. Little is known about the asteroids size, composition, albedo and rotation, despite having a well-observed orbit with the lowest possible uncertainty (a condition code of 0) and an observation arc that spans over a period of more than a century.〔 In addition, it is unknown whether the member of the Vesta family of asteroids is in fact a V/J-type , or if it is a unrelated interloper, as currently assumed to be more likely.〔
The minor planet was named after renowned Belgian–born observational astronomer George Van Biesbroeck, who naturalized as U.S. citizens in 1922. He specialized in the observation of double stars, variable stars, comets and asteroids, of which he discovered sixteen at the U.S. Yerkes Observatory in Williams Bay, Wisconsin, between 1922 and 1939. 〔 In 1961 he published the Van Biesbroeck's star catalog of low-mass, low-luminosity stars. The mountain ''Van Biesbroeck'' near the McDonald Observatory, the lunar crater ''Van Biesbroeck'', and most notably the red dwarf Van Biesbroeck's Star, were also named in his honour. There are very few stars stars named after people. The George Van Biesbroeck Prize, awarded by the American Astronomical Society for achievements in astronomy, also bears his name.
== 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「1781 Van Biesbroeck」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.
|
|