Epsilon Scorpii - Citizendia

**Epsilon Scorpii**
Observation data Epoch J2000
Constellation (pronunciation)	Scorpius
Right ascension	16^h 50^m 09. In Astronomy, an epoch is a moment in time used as a reference for the Orbital elements of a Celestial body. In common usage a constellation is a group of celestial bodies that are connected together in some arrangement typically stars to form a visible figure or picture Each culture has its own Constellations usually based on Mythology. Scorpius ( Latin for Scorpion, symbol, Unicode ♏ is one of the Constellations of the Zodiac. Right ascension (abbrev RA; symbol α) is the Astronomical term for one of the two Coordinates of a point on the Celestial sphere 8^s
Declination	-34° 17′ 36″
Apparent magnitude (V)	2. In Astronomy, declination (abbrev dec or δ) is one of the two coordinates of the Equatorial coordinate system, the other being either The apparent magnitude ( m) of a celestial body is a measure of its Brightness as seen by an observer on Earth, normalized to the value 29
Characteristics
Spectral type	K2 IIIb
U-B color index	1. In Astronomy, stellar classification is a classification of Stars based initially on photospheric temperature and its associated Spectral characteristics In Astronomy, the color index is a simple numerical expression that determines the color of an object which in the case of a Star gives its Temperature 27
B-V color index	1. In Astronomy, the color index is a simple numerical expression that determines the color of an object which in the case of a Star gives its Temperature 15
Variable type	?
Astrometry
Radial velocity (R_v)	-3 km/s
Proper motion (μ)	RA: -611. For the astronomical object see Variable star. Variable Star is a 2006 novel written by Spider Robinson Astrometry is the branch of Astronomy that relates to precise measurements and explanations of the positions and movements of Stars and other celestial bodies Radial velocity is the Velocity of an object in the direction of the line of sight (i The proper motion of a Star is the measurement of its change in position in the sky over time after Improper motions are accounted for 83 mas/yr Dec. A minute of arc, arcminute, or MOA is a unit of angular measurement, equal to one sixtieth (1/60 of one degree. A year (from Old English gēr) is the time between two recurrences of an event related to the Orbit of the Earth around the Sun : -255. 87 mas/yr
Parallax (π)	49. A minute of arc, arcminute, or MOA is a unit of angular measurement, equal to one sixtieth (1/60 of one degree. A year (from Old English gēr) is the time between two recurrences of an event related to the Orbit of the Earth around the Sun Parallax is an apparent displacement or difference of orientation of an object viewed along two different lines of sight and is measured by the angle or semi-angle of inclination between 85 ± 0. 81 mas
Distance	65 ± 1 ly (20. A minute of arc, arcminute, or MOA is a unit of angular measurement, equal to one sixtieth (1/60 of one degree. Distance is a numerical description of how far apart objects are A light-year or light year (symbol ly) is a unit of Length, equal to just under ten trillion Kilometres As defined by 1 ± 0. 3 pc)
Absolute magnitude (M_V)	0. History The first direct measurements of an object at interstellar distances were undertaken by German Astronomer Friedrich Wilhelm Bessel in 1838 In Astronomy, absolute magnitude (also known as absolute visual magnitude) is the Apparent magnitude an object would have if it were at a standard 78
Other designations
Wei, 26 Scorpii, Gl 639. A star catalogue, or star catalog, is an Astronomical catalogue that lists Stars In Astronomy, many stars are referred to simply by catalogue A star catalogue, or star catalog, is an Astronomical catalogue that lists Stars In Astronomy, many stars are referred to simply by catalogue 1, HR 6241, CD -34°11285, HD 151680, LHS 3244, GCTP 3823. The Bright Star Catalogue, also known as the Yale Catalogue of Bright Stars or Yale Bright Star Catalogue, is a Star catalogue that lists of all stars of In Astronomy, Durchmusterung or Bonner Durchmusterung ( BD) is the usual name for three comprehensive astrometric Star catalogues The Henry Draper Catalogue ( HD) is an Astronomical Star catalogue published between 1918 and 1924 giving Spectroscopic classifications A star catalogue, or star catalog, is an Astronomical catalogue that lists Stars In Astronomy, many stars are referred to simply by catalogue A star catalogue, or star catalog, is an Astronomical catalogue that lists Stars In Astronomy, many stars are referred to simply by catalogue 00, SAO 208078, FK5 628, CPD P-34°6635, HIP 82396. The Smithsonian Astrophysical Observatory Star Catalog is an astrometric Star catalogue. The Hipparcos and Tycho Catalogues (Tycho-1 are the primary products of the European Space Agency 's astrometric mission Hipparcos.

Epsilon Scorpii (ε Sco / ε Scorpii) is a star in the constellation Scorpius. A star is a massive luminous ball of plasma. The nearest star to Earth is the Sun, which is the source of most of the Energy on Earth In common usage a constellation is a group of celestial bodies that are connected together in some arrangement typically stars to form a visible figure or picture Scorpius ( Latin for Scorpion, symbol, Unicode ♏ is one of the Constellations of the Zodiac. It is rarely called Wei introduced by Patrick Moore^[1]. Sir Alfred Patrick Caldwell-Moore, CBE, HonFRS, FRAS (born 4 March 1923 in Pinner) known as Patrick Moore, is The name Wěi (尾), the Tail, was originally given for a Chinese asterism or Xiù composed from the stars ε, μ¹^-², ζ¹^-², η,θ, ι, κ, υ, and λ Scorpii^[2]. '''Twenty-eight mansions''' ( are the 28 mansions in Chinese astronomy. For other star systems with this Bayer designation, see Mu Scorpii. For other star systems with this Bayer designation, see Mu Scorpii. Eta Scorpii (η Sco/η Scorpii is a Star in the Constellation Scorpius. Theta Scorpii (θ Sco / θ Scorpii is a Star in the Constellation Scorpius. Kappa Scorpii (κ Sco / κ Scorpii is a Star in the Constellation Scorpius. Upsilon Scorpii (υ Sco / υ Scorpii is a Star in the Constellation Scorpius. Lambda Scorpii ( λ Sco / λ Scorpii) is the second brightest Star system in the Constellation Scorpius, and one of the brightest

Notes

^ Moore, P. , (1983) The Guinness Book of Astronomy: Facts & Feats, (2nd. ed. ), Guinness Superlatives Limited, Middlesex, p. 242.
^ Allen, R. H., (1899) Star-Names and Their Meanings, G. Richard Hinckley Allen (1838 Buffalo New York —1908 Northampton Massachusetts) was a gifted Polymath and Amateur naturalist; Star Names Their Lore and Meaning is a book written by Richard Hinckley Allen. E. Stechert, New York, p. 369.

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