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97 Aquarii
97 Aquarii (abbreviated 97 Aqr) is a binary star system in the equatorial constellation of Aquarius. 97 Aquarii is the Flamsteed designation. The combined apparent visual magnitude of the system is 5.20;[2] the brighter star is magnitude 5.59 while the companion is magnitude 6.72.[3] Based upon an annual parallax shift of 15.30 milliarcseconds,[1] this system is at a distance of around 210 light-years (64 parsecs) from Earth. The two stars in this system orbit each other over a period of 64.62 years at an eccentricity of 0.14.[3] Both are A-type main sequence stars; the primary has a stellar classification of A2 V while its companion is A7 V.[4] Their composite spectrum shows the properties of a Lambda Boötis star, which means it displays peculiar abundances of certain elements.[9] References
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