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89 Aquarii

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Magnitude  4.69
Apparent magnitude (V)  4.69
Constellation  Aquarius
89 Aquarii
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89 Aquarii (abbreviated 89 Aqr) is a binary star system in the equatorial constellation of Aquarius. 89 Aquarii is the Flamsteed designation though it also bears the Bayer designation c3 Aquarii. The apparent visual magnitude of +4.69 is bright enough to be seen with the naked eye. Its distance from Earth is roughly 500 light-years (150 pc), based upon parallax measurements with an 11% margin of error.

The primary component of this system has a magnitude of 5.27 and a stellar classification of G3 II, which suggests this is an evolved star in the bright giant stage. The companion is an A-type main sequence star with a stellar classification of A2 V. As of 2010, it is located at an angular separation of 0.1843 arcseconds along a position angle of 135.1°. They orbit each other with an estimated period of 201 years and a semimajor axis of 0.45 arcseconds.

References

89 Aquarii Wikipedia


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