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30 Aquarii
30 Aquarii is a single[10] star located about 301 light years away from the Sun in the zodiac constellation of Aquarius. 30 Aquarii is its Flamsteed designation. It is visible to the naked eye as a dim, orange-hued star with an apparent visual magnitude of 5.56.[2] The star is moving further from the Earth with a heliocentric radial velocity of 40 km/s.[2] This object is an aging G-type giant star[6][5] with a stellar classification of G8 III,[4] although Houk and Swift (1999) found a class of K1 IV.[3] It is a red clump giant,[6] which indicates it is on the horizontal branch and is generating energy through helium fusion at its core. The star is nearly two[2] billion years old with a leisurely rotation rate, showing a projected rotational velocity of 1.6 km/s.[8] It has double[2] the mass of the Sun and has expanded to ten[1] times the Sun's radius. The star is radiating 55[1] times the luminosity of the Sun from its swollen photosphere at an effective temperature of 4,944 K.[2] References
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