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16 Virginis
Star in the constellation Virgo From Wikipedia, the free encyclopedia
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16 Virginis is a single[10] star in the zodiac constellation of Virgo, located about 308[2] light years from the Sun. It has the Bayer designation c Virginis; 16 Virginis is the Flamsteed designation. This object is visible to the naked eye as a faint, orange-hued star with an apparent visual magnitude of 4.96.[3] This is an IAU radial velocity standard star;[11] it is moving further from the Earth with a heliocentric radial velocity of +37 km/s.[6] The star has a relatively high proper motion, traversing the celestial sphere at an angular rate of 0.301″ per year.[12]
In Chinese astronomy, 16 Virginis is called 謁者, Pinyin: Yèzhě, meaning Usher to the Court, because this star is marking itself and stand alone in Usher to the Court asterism, Supreme Palace enclosure mansion (see : Chinese constellation).[13]
This is an evolved K-type giant star with a stellar classification of K0.5 IIIb Fe−0.5,[5] where the suffix notation denotes a mild under-abundance of iron in the spectrum. It is a red clump giant, which indicates is on the horizontal branch generating energy via helium fusion at its core.[4] The interferometry-measured angular diameter of this star, after correcting for limb darkening, is 1.74±0.02 mas,[14] while the physical radius is about 19 times the radius of the Sun.[7] It is about three> billion years old with 1.62 times the mass of the Sun and is radiating 132 times the Sun's luminosity from its enlarged photosphere at an effective temperature of 4,423 K.[3]
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