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Coma Berenices In Chinese Astronomy
The modern constellation Coma Berenices lies across one of the quadrants symbolized by the Azure Dragon of the East (東方青龍, ''Dōng Fāng Qīng Lóng''), and Three Enclosures (三垣, ''Sān Yuán''), that divide the sky in traditional Chinese uranography. The name of the western constellation in modern Chinese is 后髮座 (''hòu fà zuò''), meaning "behind of queen constellation". Star The map of Chinese constellation in constellation Coma Berenices area consists of : See also *Traditional Chinese star names *Chinese constellations Traditional Chinese astronomy has a system of dividing the celestial sphere into asterisms or constellations, known as "officials" (Chinese ''xīng guān''). The Chinese asterisms are generally smaller than the constellations of Hellenistic t ... References {{reflist External linksComa Berenices – Chinese associations香港太空館https://web.archive.org/web/20120813070951/http://www.lcsd.gov.hk/CE/Museum/Space/Research/c_inde ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
11 Comae Berenices
11 Comae Berenices is a binary star system in the northern constellation of Coma Berenices, located in the sky, east and slightly north of Denebola in Leo, but not nearly as far east as ε Virginis in Virgo. It is about a degree from the elliptical galaxy M85 and two degrees north of the spiral galaxy M100. Based upon an annual parallax shift of , the star is located 305 light years away from the Sun. It is visible to the naked eye as a faint, orange-hued star with an apparent visual magnitude of 4.72. This body is moving away from the Sun with a heliocentric radial velocity of +44 km/s. The primary component is an aging K-type giant star with a stellar classification of K0 III. It is a low metallicity star with an iron abundance about half that of the Sun. Keenan and McNeil (1989) found a class of , showing an underabundance of iron in the spectrum. At the age of 1.5 billion years old with 1.7 times the mass of the Sun, it has exhausted the hydro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
18 Comae Berenices
Eighteen or 18 may refer to: * 18 (number), the natural number following 17 and preceding 19 * one of the years 18 BC, AD 18, 1918, 2018 Film, television and entertainment * ''18'' (film), a 1993 Taiwanese experimental film based on the short story ''God's Dice'' * ''Eighteen'' (film), a 2005 Canadian dramatic feature film * 18 (British Board of Film Classification), a film rating in the United Kingdom, also used in Ireland by the Irish Film Classification Office * 18 (''Dragon Ball''), a character in the ''Dragon Ball'' franchise * "Eighteen", a 2006 episode of the animated television series ''12 oz. Mouse'' Music Albums * ''18'' (Moby album), 2002 * ''18'' (Nana Kitade album), 2005 * '' 18...'', 2009 debut album by G.E.M. Songs * "18" (5 Seconds of Summer song), from their 2014 eponymous debut album * "18" (One Direction song), from their 2014 studio album ''Four'' * "18", by Anarbor from their 2013 studio album '' Burnout'' * "I'm Eighteen", by Alice Cooper commonly ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
21 Comae Berenices
21 Comae Berenices is a variable star in the northern constellation of Coma Berenices. It has the variable star designation UU Comae Berenices, while 21 Comae Berenices is the Flamsteed designation. About According to R. H. Allen, English orientalist Thomas Hyde attributed the ancient title Kissīn to this star, a name that comes from a climbing plant – either bindweed or dog rose. This star has a white hue and is just visible to the naked eye with an apparent visual magnitude that fluctuates around 5.47. Based upon parallax measurements, it is located at a distance of approximately 270 light years away from the Sun. It is a single star but is a confirmed physical member of the Melotte 111 open cluster. History This object has been studied extensively since 1953, producing some occasionally contradictory results such as hints of pulsational behavior or a binary companion. It is a weakly magnetic chemically peculiar star of type CP2, or Ap star, that is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
12 Comae Berenices
12 Comae Berenices is a binary star system in the northern constellation of Coma Berenices. It is the brightest member of the Coma Cluster and is visible to the naked eye with an apparent visual magnitude of 4.80. Although listed as a suspected variable star, there is no photometric evidence of it being variable in luminosity. However, the radial velocity was found to be variable, as announced by W. W. Campbell in 1910. The first orbital solution was published by Vinter Hansen in the 1940s. It is a double-lined spectroscopic binary with an orbital period of 396.5 days and an eccentricity of 0.566. This system consists of two stars, an evolved F-type giant star and a smaller but higher temperature A-type main-sequence star. Griffin and Griffin (2011) suggested that the secondary component may have begun its evolution away from the main sequence, and instead assigned it a luminosity class of IV. The primary, designated component A, has 2.6 times the mass of the Su ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
13 Comae Berenices
13 Comae Berenices is a probable binary star system in the northern constellation of Coma Berenices. It has an apparent visual magnitude of 5.17, which is bright enough to be faintly visible to the naked eye. With an annual parallax shift of 12.33 mas, it is located around 260 light years from the Sun. It is member of the nearby Coma Star Cluster (Melotte 111). Based on measured changes in the star's motion, this is most likely an astrometric binary system. The visible component is an A-type main-sequence star with a stellar classification of A3 V. It is catalogued as an Alpha2 Canum Venaticorum variable with the designation GN Com. Rensom (1990) listed it as a suspected Am star. The system is a source of X-ray emission Astrophysical X-ray sources are astronomical objects with physical properties which result in the emission of X-rays. Several types of astrophysical objects emit X-rays. They include galaxy clusters, black holes in active galacti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
17 Comae Berenices
17 Comae Berenices (17 Com) is a multiple star system in the northern constellation of Coma Berenices. The brighter component, 17 Com A, is a naked eye star with an apparent visual magnitude of 5.2. It has a faint companion of magnitude 6.6, 17 Com B, positioned at an angular separation of along a position angle of 251°, as of 2018. They are located at a distance of approximately 240 light years from the Sun based on parallax measurements. The double nature of this system was documented by F. G. W. Struve in 1836. The pair share a common proper motion through space and thus may be associated. Component B is itself a binary star system, although only the brighter component is visible in the spectrum. The Washington Double Star Catalogue lists the companion as component C, with a magnitude of 13.7 and a separation of . 17 Com has been recognized as members of the Coma Star Cluster, but this is disputed. The star 17 Com A was classified as chemically peculiar by ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
16 Comae Berenices
16 Comae Berenices is a single star in the northern constellation of Coma Berenices. ''16 Comae Berenices'' is the Flamsteed designation. It is a member of the Coma Star Cluster and is visible to the naked eye with an apparent visual magnitude of 4.96. Based upon an annual parallax shift of , it is located about 279 light years away. This is a chemically-peculiar A-type main-sequence star with a stellar classification of A4 V. It displays an infrared excess, suggesting the presence of an orbiting debris disk at a mean distance of with a temperature of . 16 Com has 2.54 times the mass of the Sun and 3.71 times the Sun's radius. The star is 310 million years old with a projected rotational velocity of 80 km/s. It is radiating 67 times the Sun's luminosity from its photosphere at an effective temperature The effective temperature of a body such as a star or planet is the temperature of a black body that would emit the same total amount of electro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
14 Comae Berenices
14 Comae Berenices is a single star in the northern constellation of Coma Berenices, and is the second brightest member of the Coma Star Cluster. It is a faint star but visible to the naked eye with an apparent visual magnitude of 4.95. Parallax measurements place the star at a distance of about 266 light years. The spectrum of this star is peculiar and it has been assigned a number of different stellar classifications: A5, F0p, , F0 vp, , , F1 IV, and . Abt & Morrell (1995) designated this a Lambda Boötis star but this was later refuted. No surface magnetic field has been detected on 14 Comae Bernices. 14 Comae Berenices is a well-known shell star with a high rate of spin, showing a projected rotational velocity of 226 km/s. This is giving the star an oblate shape with an equatorial bulge that is 12% larger than the polar radius. It is radiating 76 times the Sun's luminosity from its photosphere at an effective temperature The effective tempe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gamma Comae Berenices
Gamma Comae Berenices, Latinized from γ Comae Berenices, is a single, orange-hued star in the northern constellation of Coma Berenices. It is faintly visible to the naked eye, having an apparent visual magnitude of 4.36. Based upon an annual parallax shift of 19.50 mas as seen from Earth, its distance can be estimated as around 167 light years from the Sun. The star is moving away from the Sun with a radial velocity of +3 km/s. This is an evolved K-type giant star with a stellar classification of . The suffix notation indicates the star displays an overabundance of iron in its spectrum. It is most likely (91% chance) on the horizontal branch with an age of 2.7 billion years. If this is true, then it has an estimated 1.65 times the mass of the Sun and has expanded to nearly 12 times the Sun's radius. The star is radiating 58 times the Sun's luminosity from its enlarged photosphere at an effective temperature of around 4,652 K. Gamma Comae Berenice ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
30 Comae Berenices
3 (three) is a number, numeral and digit. It is the natural number following 2 and preceding 4, and is the smallest odd prime number and the only prime preceding a square number. It has religious or cultural significance in many societies. Evolution of the Arabic digit The use of three lines to denote the number 3 occurred in many writing systems, including some (like Roman and Chinese numerals) that are still in use. That was also the original representation of 3 in the Brahmic (Indian) numerical notation, its earliest forms aligned vertically. However, during the Gupta Empire the sign was modified by the addition of a curve on each line. The Nāgarī script rotated the lines clockwise, so they appeared horizontally, and ended each line with a short downward stroke on the right. In cursive script, the three strokes were eventually connected to form a glyph resembling a with an additional stroke at the bottom: ३. The Indian digits spread to the Caliphate in the 9th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
