Astronomy and Space

91 Aquarii

91 Aquarii is a triple star system in the equatorial constellation of Aquarius. It also bears the Bayer designation Psi1 Aquarii (ψ1 Aqr, ψ1 Aquarii). 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.

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See also

• ▸Electromagnetic spectrum
• ▸Imerina
• ▸KDU-414

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