Tags: Star.
91 Aquarii also known as Psi1 Aquarii (ψ1 Aqr ψ1 Aquarii) is the Flamsteed designation for a triple star system in the equatorial constellation of Aquarius. It is visible to the naked eye with an apparent visual magnitude of +4.248. Parallax measurements yield an estimated distance of around 150 light-years (46 parsecs) from Earth. An extrasolar planet is known to orbit the main star.
