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・ Castor and Pollux (disambiguation)
・ Castor and Pollux (elephants)
・ Castor and Pollux (Prado)
・ Castor and Pollux River
・ Castor Bay
・ Castor californicus
・ CASTOR calorimeter
・ Castor Cantero
・ Castor Cracking Group
・ Castor Creek
・ Castor de Andrade
・ Castor et Pollux
・ Castor Gardens, Philadelphia
・ Castor Hanglands National Nature Reserve
・ Castor McCord
Castor Moving Group
・ Castor Nunatak
・ Castor of Apt
・ Castor of Karden
・ Castor of Rhodes
・ Castor oil
・ Castor Oyl
・ Castor railway station
・ Castor Raphael Ligallama
・ Castor River
・ Castor River (Missouri)
・ Castor River (Ontario)
・ Castor River North
・ Castor Rock
・ Castor Station, Missouri


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Castor Moving Group : ウィキペディア英語版
Castor Moving Group
The Castor Moving Group is a moving group of stars sharing similar velocities. The stars that have been identified as part of the group include Castor, Fomalhaut, Vega, α Cephei and α Librae. While the reported group members are young (typically with ages of hundreds of millions of years), recent results suggest that the velocity differences amongst the moving group stars are too large for them to have possibly shared a common origin.
==Discovery and constituents==
The moving group was first proposed by J. P. Anosova, and V. V. Orlov in 1990.〔 Anosova and Orlov originally proposed 15 members. In 1999, Barrado y Navascues presented a membership list of 16 stars, and estimated a group age of 200 million years.〔 The membership of the group has not been well-established and varies quite a bit amongst studies.

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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