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・ Taufeeq Khan
・ Taufeeq Umar
・ Tauferer Ahrntal
・ Taufers im Münstertal
・ Taufers Railway
・ Taufic Guarch
・ Taufichtig
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Tau Sagittarii
・ Tau Scorpii
・ Tau Sculptoris
・ Tau Serpentis
・ Tau Sigma
・ Tau Sigma Delta
・ Tau Sigma Phi
・ Tau Taa Wana
・ Tau tau
・ Tau Tauri
・ Tau Ursae Majoris
・ Tau Virginis
・ Tau Zero
・ Tau'ri characters in Stargate
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Tau Sagittarii : ウィキペディア英語版
Tau Sagittarii


Tau Sagittarii (Tau Sgr, τ Sagittarii, τ Sgr) is a star in the southern zodiac constellation of Sagittarius.
==Description==
With an apparent visual magnitude of +3.3,〔 this is one of the brighter members of the constellation. The distance of this star from Earth is roughly , based upon parallax measurements.〔
This is a spectral type K1 giant star with 1.5 - 2 Solar masses. The stellar envelope is slightly cooler than the Sun, with an effective temperature of 4,860 K,〔 giving the star a light orange color. The interferometry-measured angular diameter of this star, after correcting for limb darkening, is ,〔 which, at its estimated distance, equates to a physical radius of about 16 times the radius of the Sun.〔 Tau Sagittarii is a suspected double star although no companion has been confirmed yet. A lower metal content (Fe to H ratio is 70%) and a high peculiar velocity (64 km/s, 4x the local average) relative to the Sun suggest the star is a visitor from a different part of the Galaxy.

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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