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C2 Centauri
The Bayer designations c Centauri and C Centauri are distinct. The designation c Centauri is shared by two star systems in the constellation Centaurus: * c1 Centauri (HD 129456) * c2 Centauri (HD 129685) The designation C Centauri is shared by three star systems: * C1 Centauri (V763 Centauri) * C2 Centauri (HD 100825) * C3 Centauri (HD 101067) See also * γ Centauri * Alpha Centauri C (Proxima Centauri) * σ Centauri * 3 Centauri 3 Centauri is a triple star system in the southern constellation of Centaurus, located approximately 300 light years from the Sun. It is visible to the naked eye as a faint, blue-white hued star with a combined apparent visual magnitud ... {{SIA , astronomical objects Centauri, c Centaurus (constellation) ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bayer Designation
A Bayer designation is a stellar designation in which a specific star is identified by a Greek or Latin letter followed by the genitive form of its parent constellation's Latin name. The original list of Bayer designations contained 1,564 stars. The brighter stars were assigned their first systematic names by the German astronomer Johann Bayer in 1603, in his star atlas ''Uranometria''. Bayer catalogued only a few stars too far south to be seen from Germany, but later astronomers (including Nicolas-Louis de Lacaille and Benjamin Apthorp Gould) supplemented Bayer's catalog with entries for southern constellations. Scheme Bayer assigned a lowercase Greek letter (alpha (α), beta (β), gamma (γ), etc.) or a Latin letter (A, b, c, etc.) to each star he catalogued, combined with the Latin name of the star's parent constellation in genitive (possessive) form. The constellation name is frequently abbreviated to a standard three-letter form. For example, Aldebaran in the constellation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Centaurus
Centaurus is a bright constellation in the southern sky. One of the 88 modern constellations by area, largest constellations, Centaurus was included among the 48 constellations listed by the 2nd-century astronomer Ptolemy, and it remains one of the 88 modern constellations. In Greek mythology, Centaurus represents a centaur; a creature that is half human, half horse (another constellation named after a centaur is one from the zodiac: Sagittarius (constellation), Sagittarius). Notable stars include Alpha Centauri, the nearest star system to the Solar System, its neighbour in the sky Beta Centauri, and V766 Centauri, one of the largest stars yet discovered. The constellation also contains Omega Centauri, the brightest globular cluster as visible from Earth and the largest identified in the Milky Way, possibly a remnant of a dwarf galaxy. Notable features Stars Centaurus contains several very bright stars. Its alpha and beta stars are used as "pointer stars" to help observers ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
HD 129456
HD 129456, also known by its Bayer designation c1 Centauri (c1 Cen), is a star in the constellation Centaurus. c¹ Centauri is an orange K-type giant with an apparent magnitude of +4.06. It is approximately 209 light years from Earth Earth is the third planet from the Sun and the only astronomical object known to harbor life. While large volumes of water can be found throughout the Solar System, only Earth sustains liquid surface water. About 71% of Earth's surfa .... References Centauri, c1 Centaurus 129456 K-type giants 5485 072010 Durchmusterung objects {{giant-star-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
HD 129685
HD 129685 is a single star in the southern constellation of Centaurus. It is also known by its Bayer designation c2 Centauri, while ''HD 129685'' is the star's identifier in the '' Henry Draper catalogue''. This object has a white hue and is faintly visible to the naked eye with an apparent visual magnitude of +4.92. It is located at a distance of approximately 231 light years from the Sun based on parallax, and it has an absolute magnitude of 0.83. The star is drifting closer with a radial velocity of around −5 km/s. Two different stellar classifications have been reported for this star. A class of A0Vn assigned by Abt and Morrell (1995) indicates it is a rapidly-rotating A-type main-sequence star, while a type of A0IVnn, according to Gray and Garrison (1987), suggests it is a somewhat more evolved subgiant star. It is around 239 million years old with 2.1 times the mass of the Sun, and is reported to be rotating close to its break-up velocity. The st ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
V763 Centauri
C1 Centauri is a single star in the southern constellation of Centaurus. It has the variable star designation V763 Centauri, while ''C1 Centauri'' is the Bayer designation. The star has a red hue and is dimly visibly to the naked eye with an apparent visual magnitude that fluctuates around +5.64. It is located at a distance of approximately 600 light years based on parallax, and has an absolute magnitude of −1.05. It is drifting further away with a radial velocity of +21 km/s. At one time it was a candidate member of the Zeta Herculis Moving Group but has since been excluded. This object is an aging red giant star on the asymptotic giant branch with a stellar classification of M3/4III. Samus et al. (2017) classify this as a slow irregular variable of sub-type Lb and its brightness varies from magnitude +5.52 down to +5.82. It was previously classified as a semiregular variable of sub-type SRb. With the supply of hydrogen and helium at its core exhau ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
HD 100825
HD 100825 is a single star in the southern constellation of Centaurus. It has the Bayer designation C2 Centauri, while ''HD 100825'' is the identifier from the '' Henry Draper catalogue''. The star has a yellow-white hue and is dimly visible to the naked eye with an apparent visual magnitude of +5.26. It is located at a distance of 187 light years from the Sun based on parallax, with an absolute magnitude of +1.31. The radial velocity is poorly constrained, but the star appears to be drifting further away from the Sun at the rate of around 5 km/s. It is a member of the Sirius supercluster of co-moving stars. This is an Am star or metallic-line star with a stellar classification of F0V, indicating it is a F-type main-sequence star that is generating energy by core hydrogen fusion. It is an estimated 467 million years old and has 1.62 times the mass of the Sun. The star is radiating 21 times the luminosity of the Sun from its photosphere ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
C3 Centauri
C3 Centauri is a suspected astrometric binary star system in the southern constellation of Centaurus. It has an orange hue and is dimly visible to the naked eye with an apparent visual magnitude of +5.46. The distance to this object is approximately 342 light years based on parallax. It is a member of the Hyades Stream of co-moving stars. The visible component of this system is an aging giant star with a stellar classification of K2 III, which indicates it has exhausted the supply of hydrogen at its core then cooled and expanded off the main sequence. At present it has nearly sixteen times the girth of the Sun. It is radiating 96 times the luminosity of the Sun from its swollen 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 electromagnetic radiation. Effective temperature is often used as an estimate of a body's surface temper ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gamma Centauri
Gamma Centauri, Latinized from γ Centauri, is a binary star system in the southern constellation of Centaurus. It has the proper name Muhlifain, not to be confused with Muliphein, which is γ Canis Majoris; both names derive from the same Arabic root. The system is visible to the naked eye as a single point of light with a combined apparent visual magnitude of +2.17; individually they are third-magnitude stars. This system is located at a distance of about from the Sun based on parallax. In 2000, the pair had an angular separation of 1.217 arcseconds with a position angle of 351.9°. Their positions have been observed since 1897, which is long enough to estimate an orbital period of 84.5 years and a semimajor axis of 0.93 arcsecond. At the distance of this system, this is equivalent to a physical separation of about . The combined stellar classification of the pair is A1IV+; when they are separated out they have individual classes of A1IV and A0IV, suggesting they ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alpha Centauri C
Proxima Centauri is a small, low-mass star located away from the Sun in the southern constellation of Centaurus. Its Latin name means the 'nearest tarof Centaurus'. It was discovered in 1915 by Robert Innes and is the nearest-known star to the Sun. With a quiescent apparent magnitude of 11.13, it is too faint to be seen with the unaided eye. Proxima Centauri is a member of the Alpha Centauri star system, being identified as component Alpha Centauri C, and is 2.18° to the southwest of the Alpha Centauri AB pair. It is currently from AB, which it orbits with a period of about 550,000 years. Proxima Centauri is a red dwarf star with a mass about 12.5% of the Sun's mass (), and average density about 33 times that of the Sun. Because of Proxima Centauri's proximity to Earth, its angular diameter can be measured directly. Its actual diameter is about one-seventh (14%) the diameter of the Sun. Although it has a very low average luminosity, P ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sigma Centauri
Sigma Centauri, Latinized from σ Centauri, is the Bayer designation for a solitary star in the southern constellation of Centaurus. It is visible to the naked eye with an apparent visual magnitude of 3.91. A visual companion at an angular separation of along a position angle of was detected in 2010 using interferometry, but its association with Sigma Centauri remains undetermined as of 2013. The distance to Sigma Centauri, based upon an annual parallax shift of 7.92 mas, is around 412 light years. This is a B-type main sequence star with a stellar classification of B3 V. It is a helium-rich star, the most massive type of chemically peculiar star. Sigma Centauri has around 6.8 times the mass of the Sun and 4.5 times the Sun's radius. It has a relatively high rate of spin with a projected rotational velocity of 169 km/s, and is around 25 million years old. The star radiates 1,101 times the solar luminosity The solar luminosity (), is a unit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
3 Centauri
3 Centauri is a triple star system in the southern constellation of Centaurus, located approximately 300 light years from the Sun. It is visible to the naked eye as a faint, blue-white hued star with a combined apparent visual magnitude of 4.32. As of 2017, the two visible components had an angular separation of along a position angle of 106°. The system has the Bayer designation k Centauri; ''3 Centauri'' is the Flamsteed designation. It is a suspected eclipsing binary with a variable star designation V983 Centauri. The brighter member, designated component A, is a magnitude 4.52 chemically peculiar star of the helium-weak (CP4) variety, and has a stellar classification of B5 III-IVp. The spectrum of the star displays overabundances of elements such as nitrogen, phosphorus, manganese, iron, and nickel, while carbon, oxygen, magnesium, aluminium, sulfur, and chlorine appear underabundant relative to the Sun. Weak emission line features are also visible. Th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bayer Objects
Bayer AG (, commonly pronounced ; ) is a German multinational pharmaceutical and biotechnology company and one of the largest pharmaceutical companies in the world. Headquartered in Leverkusen, Bayer's areas of business include pharmaceuticals; consumer healthcare products, agricultural chemicals, seeds and biotechnology products. The company is a component of the Euro Stoxx 50 stock market index. Bayer was founded in 1863 in Barmen as a partnership between dye salesman Friedrich Bayer and dyer Friedrich Weskott. As was common in this era, the company was established as a dyestuffs producer. The versatility of aniline chemistry led Bayer to expand their business into other areas, and in 1899 Bayer launched the compound acetylsalicylic acid under the trademarked name Aspirin. In 1904 Bayer received a trademark for the "Bayer Cross" logo, which was subsequently stamped onto each aspirin tablet, creating an iconic product that is still sold by Bayer. Other commonly known produ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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