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Encyclopedia > D Centauri
D Centauri
Observation data
Equinox J2000.0
Constellation Centaurus
Right ascension 12h14m02.6s
Declination −45°43′26″
Apparent magnitude (V) +5.31
Characteristics
Spectral type K3III
U-B color index +1.59
B-V color index +1.43
Variable type none
Astrometry
Radial velocity (Rv) +7 km/s
Proper motion (μ) RA: −35.19 mas/yr
Dec.: 4.41 mas/yr
Parallax (π) 5.76 ± 0.83 mas
Distance 566 ly (174 pc)
Absolute magnitude (MV) −0.88
Other designations
HR 4652, HD 106321, CD−45°7630, HIP 59654, SAO 223297, GC 16703, CCDM J12140-4543
Database references
SIMBAD data

D Centauri (D Cen) is a binary star in the constellation Centaurus. The system has a combined apparent magnitude of +5.31 and is approximately 566 light years from Earth. From the Glossary of Astronomical Terms by the Harvard-Smithsonian Center for Astrophysics: Either of the two points (vernal, autumnal) on the celestial sphere where the ecliptic (which is the apparent path of the sun on the sky) intersects the celestial equator. ... It has been suggested that this article or section be merged into Julian epoch. ... This article or section does not cite its references or sources. ... Centaurus (Latin for centaur) was one of the 48 constellations listed by Ptolemy, and counts also among the 88 modern constellations. ... Equatorial Coordinates Right ascension (abbrev. ... In astronomy, declination (abbrev. ... // Headline text HEY!! HOW ARE YOU ALL?? Its nice of you to come read this page. ... In astronomy, stellar classification is a classification of stars based initially on photospheric temperature and its associated spectral characteristics, and subsequently refined in terms of other 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. ... 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. ... Most stars are of almost constant luminosity. ... This article does not cite its references or sources. ... Radial velocity is the velocity of an object in the direction of the line of sight. ... kilometre per second is an SI derived unit of both speed (scalar) and velocity (vector), signified by the symbol km/s or km s-1. ... The proper motion of a star is the motion of the position of the star in the sky (the change in direction in which we see it, as opposed to the radial velocity) after eliminating the improper motions of the stars, which affect their measured coordinates but are not real... A milliarcsecond (m, mas) , or a thoundsanth of an arcsecond. ... A year is the time between two recurrences of an event related to the orbit of the Earth around the Sun. ... A milliarcsecond (m, mas) , or a thoundsanth of an arcsecond. ... A year is the time between two recurrences of an event related to the orbit of the Earth around the Sun. ... This does not cite its references or sources. ... A milliarcsecond (m, mas) , or a thoundsanth of an arcsecond. ... Distance is a numerical description of how far apart things lie. ... A light-year or lightyear, symbol ly, is a unit of length. ... Stellar parallax motion The parsec (symbol pc) is a unit of length used in astronomy. ... In astronomy, absolute magnitude is the apparent magnitude, m, an object would have if it were at a standard luminosity distance away from us, in the absence of interstellar extinction. ... In astronomy, many stars are referred to simply by catalogue numbers. ... In astronomy, many stars are referred to simply by catalogue numbers. ... The Henry Draper Catalogue is an astronomy catalogue with astrometric and spectroscopic data about more than 225,000 stars. ... In astronomy, many stars are referred to simply by catalogue numbers. ... In astronomy, many stars are referred to simply by catalogue numbers. ... In astronomy, many stars are referred to simply by catalogue numbers. ... SIMBAD (the Set of Identifications, Measurements, and Bibliography for Astronomical Data) is a database of astronomical information about objects within the Milky Way. ... This article is about the astronomical phenomenon. ... This article or section does not cite its references or sources. ... Centaurus (Latin for centaur) was one of the 48 constellations listed by Ptolemy, and counts also among the 88 modern constellations. ... // Headline text HEY!! HOW ARE YOU ALL?? Its nice of you to come read this page. ... A light-year or lightyear, symbol ly, is a unit of length. ... Adjectives: Terrestrial, Terran, Telluric, Tellurian, Earthly Atmosphere Surface pressure: 101. ...


The system is classified as an orange K-type giant. The primary component, D Centauri A, has an apparent magnitude of +5.31, while the apparent magnitude of the companion, D Centauri B is +6.8. The two stars are separated by 2.9 arcseconds. In astronomy, stellar classification is a classification of stars based initially on photospheric temperature and its associated spectral characteristics, and subsequently refined in terms of other characteristics. ... Giant star is a star that has stopped fusing hydrogen in its core. ... // Headline text HEY!! HOW ARE YOU ALL?? Its nice of you to come read this page. ... A second of arc or arcsecond is a unit of angular measurement which comprises one-sixtieth of an arcminute, or 1/3600 of a degree of arc or 1/1296000 ≈ 7. ...


  Results from FactBites:
 
NodeWorks - Encyclopedia: Alpha Centauri (790 words)
It consists of two main stars, Alpha Centauri A and Alpha Centauri B (which form a binary star together) at a distance of 4.36 ly, and a dimmer red dwarf named Proxima Centauri at a distance of 4.22 ly.
The closest neighbours to the Alpha Centauri system are the Sun and Barnard's star (1.98 pc or 6.47 ly), which is also the next nearest star from Earth, at a distance of 5.96 ly.
However, some astronomers have speculated that any terrestrial planets in the Alpha Centauri system may be dry because it is believed that Jupiter and Saturn were crucial at directing comets into the inner solar system and providing the inner planets with a source of water.
  More results at FactBites »


 

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