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TZ Cassiopeiae : ウィキペディア英語版 | TZ Cassiopeiae
TZ Cassiopeaie (TZ Cas, HIP 117763, SAO 20912) is a variable star in the constellation Cassiopeia with an apparent magnitude of around +9. It is approximately 4,500 light-years away from Earth. The star is a red supergiant star with a spectrum type of M3 and a temperature of 3600 Kelvin. Currently, it packs 15 solar masses within itself. TZ Cassiopeaie is a slow irregular variable star with possible periods of 290, 2,800, and 3,100 days. It is approximately 98,000 times the luminosity of the Sun, and it is 800 times bigger than the Sun. == 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「TZ Cassiopeiae」の詳細全文を読む
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