Matches in DBpedia 2014 for { <http://dbpedia.org/resource/Alpha_Centauri> ?p ?o. }
- Alpha_Centauri abstract "Alpha Centauri (α Centauri, α Cen; also known as Rigil Kent /ˈraɪdʒəl ˈkɛnt/—see Names) is the brightest star in the southern constellation of Centaurus and the third brightest star in the night sky. The Alpha Centauri system is located 1.34 parsecs or 4.37 light years from the Sun, making it the closest star system to our Solar System. Although it appears to the unaided eye as a single object, Alpha Centauri is actually a binary star system (designated Alpha Centauri AB or α Cen AB) whose combined visual magnitude of −0.27 makes it the third brightest star (other than the Sun) seen from Earth after the −1.46 magnitude Sirius and the −0.72 magnitude Canopus.Its component stars are named Alpha Centauri A (α Cen A), with 110% of the mass and 151.9% the luminosity of the Sun, and Alpha Centauri B (α Cen B), at 90.7% of the Sun's mass and 44.5% of its luminosity. During the pair's 79.91-year orbit about a common center, the distance between them varies from about that between Pluto and the Sun to that between Saturn and the Sun.A third star, known as Proxima Centauri, Proxima, or Alpha Centauri C (α Cen C), is probably gravitationally associated with Alpha Centauri AB. Proxima is at the slightly smaller distance of 1.29 parsecs or 4.24 light years from the Sun, making it the closest star to the Sun even though it is not visible to the naked eye. The separation of Proxima from Alpha Centauri AB is about 0.06 parsecs, 0.2 light years or 13,000 astronomical units (AU); equivalent to 400 times the size of Neptune's orbit.The system may also contain at least one planet, the Earth-sized Alpha Centauri Bb, which, if confirmed, will be the closest known exoplanet to Earth. The planet has a mass at least 113% of Earths and orbits Alpha Centauri B with a period of 3.236 days. Orbiting at a distance of 6 million kilometers from the star, 4% of the distance of the Earth to the Sun and a tenth of the distance between Mercury and the Sun, the planet has an estimated surface temperature of 1500 K (roughly 1200 °C), too hot to be habitable. More recently, on June 10, 2013, scientists reported that the earlier claims of an Earth-like exoplanet orbiting Alpha Centauri B may not be supported.".
- Alpha_Centauri thumbnail Alpha_centauri.jpg?width=300.
- Alpha_Centauri wikiPageExternalLink orb6.html.
- Alpha_Centauri wikiPageExternalLink alpha-centauri.shtml.
- Alpha_Centauri wikiPageExternalLink sim-id.pl?protocol=html&Ident=alpha+centauri.
- Alpha_Centauri wikiPageExternalLink www.alpha-centauri.pt.
- Alpha_Centauri wikiPageExternalLink alphacentauri.html.
- Alpha_Centauri wikiPageExternalLink PageAlphaCen001.htm.
- Alpha_Centauri wikiPageExternalLink PageAlphaCen006.htm.
- Alpha_Centauri wikiPageExternalLink 080307-another-earth.html.
- Alpha_Centauri wikiPageExternalLink viewpr.html?pid=11016.
- Alpha_Centauri wikiPageExternalLink alphacen.htm.
- Alpha_Centauri wikiPageID "1979".
- Alpha_Centauri wikiPageRevisionID "606623853".
- Alpha_Centauri absmagV "4.38".
- Alpha_Centauri age2Gyr "6".
- Alpha_Centauri ageGyr "6".
- Alpha_Centauri alternativemap "Position Alpha Cen.png".
- Alpha_Centauri appmagV "+1.33".
- Alpha_Centauri appmagV "−0.01".
- Alpha_Centauri aricns "1151".
- Alpha_Centauri axis "17.57".
- Alpha_Centauri bV "+0.69".
- Alpha_Centauri bV "+0.90".
- Alpha_Centauri caption "Location of Alpha Centauri in Centaurus".
- Alpha_Centauri class "G2 V".
- Alpha_Centauri class "K1 V".
- Alpha_Centauri component "Alpha Centauri A".
- Alpha_Centauri component "Alpha Centauri B".
- Alpha_Centauri constell Centaurus.
- Alpha_Centauri eccentricity "0.5179".
- Alpha_Centauri epe "alf+cen".
- Alpha_Centauri epoch Epoch_(astronomy).
- Alpha_Centauri exoplanet Alpha_Centauri_Bb.
- Alpha_Centauri float "right".
- Alpha_Centauri gravity "4.3".
- Alpha_Centauri gravity "4.37".
- Alpha_Centauri hasPhotoCollection Alpha_Centauri.
- Alpha_Centauri inclination "79.205".
- Alpha_Centauri lat "18".
- Alpha_Centauri long "24".
- Alpha_Centauri luminosity "0.5".
- Alpha_Centauri luminosity "1.519".
- Alpha_Centauri mark "Circle sheer red 33.gif".
- Alpha_Centauri marksize "33".
- Alpha_Centauri mass "0.907".
- Alpha_Centauri mass "1.1".
- Alpha_Centauri massEarth "1.13".
- Alpha_Centauri metal "151".
- Alpha_Centauri metal "160".
- Alpha_Centauri name "Alpha Centauri AB".
- Alpha_Centauri name "Alpha Centauri B".
- Alpha_Centauri node "204.85".
- Alpha_Centauri nsted "alpha+centauri".
- Alpha_Centauri pError "1.2".
- Alpha_Centauri parallax "747.1".
- Alpha_Centauri periarg "231.65".
- Alpha_Centauri periastron "1875.66".
- Alpha_Centauri period "3.2357".
- Alpha_Centauri period "79.91".
- Alpha_Centauri propMoDec "481.84".
- Alpha_Centauri propMoRa "−3678.19".
- Alpha_Centauri radialV "−21.6".
- Alpha_Centauri radius "0.865".
- Alpha_Centauri radius "1.227".
- Alpha_Centauri rotation "4060800.0".
- Alpha_Centauri rotation "509760.0".
- Alpha_Centauri semimajor "0.04".
- Alpha_Centauri simbad "alpha+centauri".
- Alpha_Centauri temperature "5260".
- Alpha_Centauri temperature "5790".
- Alpha_Centauri uB "+0.23".
- Alpha_Centauri uB "+0.63".
- Alpha_Centauri width "240".
- Alpha_Centauri subject Category:Alpha_Centauri.
- Alpha_Centauri subject Category:Bayer_objects.
- Alpha_Centauri subject Category:Centaurus_(constellation).
- Alpha_Centauri subject Category:G-type_main-sequence_stars.
- Alpha_Centauri subject Category:Gliese_and_GJ_objects.
- Alpha_Centauri subject Category:HR_objects.
- Alpha_Centauri subject Category:Henry_Draper_Catalogue_objects.
- Alpha_Centauri subject Category:Hipparcos_objects.
- Alpha_Centauri subject Category:K-type_main-sequence_stars.
- Alpha_Centauri subject Category:M-type_main-sequence_stars.
- Alpha_Centauri subject Category:Multi-star_planetary_systems.
- Alpha_Centauri subject Category:Solar_analogs.
- Alpha_Centauri subject Category:Stars_with_proper_names.
- Alpha_Centauri subject Category:Triple_star_systems.
- Alpha_Centauri type BayerObjects.
- Alpha_Centauri type CelestialBody109239740.
- Alpha_Centauri type G-typeMainSequenceStars.
- Alpha_Centauri type HIPObjects.
- Alpha_Centauri type HRObjects.
- Alpha_Centauri type HenryDraperCatalogueObjects.
- Alpha_Centauri type K-typeMainSequenceStars.
- Alpha_Centauri type M-typeMainSequenceStars.
- Alpha_Centauri type NaturalObject100019128.
- Alpha_Centauri type Object100002684.
- Alpha_Centauri type PhysicalEntity100001930.
- Alpha_Centauri type Star109444100.