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45 Boötis
45 Boötis is a single star located 63 light years away from the Sun in the northern constellation of Boötes. It has the Bayer designation c Boötis; ''45 Boötis'' is the Flamsteed designation. This body is visible to the naked eye as a faint, yellow-white hued star with an apparent visual magnitude of 4.93. It has a relatively high proper motion, traversing the celestial sphere at the rate of per year. The star is moving closer to the Earth with a heliocentric radial velocity of −11 km/s, and is a stream member of the Ursa Major Moving Group. This is an F-type main-sequence star with a stellar classification of F5 V. It is around 1.6 billion years old and is spinning with a projected rotational velocity of 40 km/s. The star has 1.2 times the mass of the Sun and 1.46 times the Sun's radius. It is radiating 3.3 times the luminosity of the Sun from its photosphere at an effective temperature of 6,435 K. 45 Boötis is a source of X-ray ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Boötes (constellation)
Boötes ( ) is a constellation in the northern sky, located between 0° and +60° declination, and 13 and 16 hours of right ascension on the celestial sphere. The name comes from la, Boōtēs, which comes from grc-gre, Βοώτης, Boṓtēs ' herdsman' or ' plowman' (literally, ' ox-driver'; from ''boûs'' ' cow'). One of the 48 constellations described by the 2nd-century astronomer Ptolemy, Boötes is now one of the 88 modern constellations. It contains the fourth-brightest star in the night sky, the orange giant Arcturus. Epsilon Boötis, or Izar, is a colourful multiple star popular with amateur astronomers. Boötes is home to many other bright stars, including eight above the fourth magnitude and an additional 21 above the fifth magnitude, making a total of 29 stars easily visible to the naked eye. History and mythology In ancient Babylon, the stars of Boötes were known as SHU.PA. They were apparently depicted as the god Enlil, who was the leader of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
