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Gliese 521
Gliese 521 is a red dwarf star in the constellation of Canes Venatici, located roughly 43 light years from the Sun. The star is suspected to host a substellar companion yet unconfirmed. == A planetary companion? ==
According to Marcy & Benitz (1989) detected a possible periodicity of 510 days, inferring possible presence of a massive planetary object with minimum mass of 12 times that of Jupiter in highly eccentric orbit (e=0.6). So far the planet has not been confirmed.
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「Gliese 521」の詳細全文を読む
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