翻訳と辞書 |
1659 Punkaharju : ウィキペディア英語版 | 1659 Punkaharju
1659 Punkaharju, provisional designation 1940 YL, is an eccentric, stony asteroid from the outer region of the asteroid belt, about 31 kilometers in diameter. It was discovered by Finnish astronomer Yrjö Väisälä at Turku Observatory on 28 December 1940.〔 The asteroid orbits the Sun at a distance of 2.1–3.5 AU once every 4 years and 8 months (1,698 days). Its orbit shows an eccentricity of 0.26 and is tilted by 16 degrees to the plane of the ecliptic. It has a well-determined rotation period of 5.0 hours.〔〔〔〔 The S-type asteroid has an albedo in the range of 0.17–0.27, according to several surveys carried out by the IRAS, Akari, WISE and NEOWISE missions.〔〔〔 It is named after the former municipality of Punkaharju, a well-known and beautiful isthmus region in southeastern Finland ''(also see Karelian Isthmus)''.〔 == 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「1659 Punkaharju」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.
|
|