Tags: Star.
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 5.12 ± 0.05 mas.
