Tags: Star.
51 Aquarii is the Flamsteed designation for a star in the equatorial constellation of Aquarius. It has an apparent visual magnitude is 5.78 and is located around 410 light-years (130 parsecs) from Earth. This is an A-type main sequence star with a stellar classification of A0 V. It has a high rate of rotation with a projected rotational velocity of 91 km/s.