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Tau² Aquarii : ウィキペディア英語版 | Tau2 Aquarii
:''For other star systems with this Bayer designation, see Tau Aquarii.''
Tau2 Aquarii (τ2 Aqr, τ2 Aquarii) is the Bayer designation for a star in the equatorial constellation of Aquarius. It is visible to the naked eye with an apparent visual magnitude of +4.0.〔 This is an orange-hued〔 giant star with a stellar classification of K5 III.〔 The measured angular diameter, after correction for limb darkening, is .〔 At an estimated distance of based on parallax measurements,〔 this yields a physical size of about 53 times the radius of the Sun.〔 ==References== } \\ & \approx 107\cdot R_ \end〕
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