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1453 Fennia
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1453 Fennia : ウィキペディア英語版
1453 Fennia

1453 Fennia (provisional designation: 1938 ED1) is an inner main belt asteroid. It was discovered on March 8, 1938, by the Finnish astronomer Yrjö Väisälä at Iso-Heikkilä Observatory in Turku, Finland. The asteroid's name is the Latin word for Finland.〔Lutz D. Schmadel, (''Dictionary of Minor Planet Names: Addendum to Fifth Edition: 2006 - 2008'' ).〕
In 2007, a team of astronomers made photometric observations of Fennia, and discovered that it is orbited by a moon. The moon is at least a quarter the size of Fennia itself, and has an orbital period of approximately 23 hours. The team also found that Fennia has a rotation period of 4.4 hours and is likely spheroidal in shape.〔(Central Bureau for Astronomical Telegrams, Electronic Telegram No. 1150 ).〕
==References==


抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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