45 Cancri (original) (raw)
45 Cancri è una stella bianca nella sequenza principale di magnitudine 5,63 situata nella costellazione del Cancro. Dista 1029 anni luce dal sistema solare.
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| dbo:abstract | 45 Cancri is a binary star system in the zodiac constellation of Cancer, located 680 light-years away from the Sun. It has the Bayer designation A1 Cancri; 45 Cancri is the Flamsteed designation. It is visible to the naked eye as a faint, white-hued star at an apparent visual magnitude of 5.62. The pair form a double-lined spectroscopic binary with an orbital period of 2.76 years and an eccentricity of 0.46. They are drifting closer to the Earth with a heliocentric radial velocity of −6 km/s. The primary, designated component A, is an aging giant star with a stellar classification of G8 III, but has most likely not yet made multiple ascents up the red giant branch. It has 3.11 times the mass of the Sun and has expanded to 14 times the Sun's radius. The star is radiating 210 times the luminosity of the Sun from its enlarged photosphere at an effective temperature of 5,058 K. The less evolved secondary, component B is likewise a giant star, having a class of A3 III. It has three times the mass of the Sun and shines with 191 times the Sun's luminosity. (en) 45 Cancri è una stella bianca nella sequenza principale di magnitudine 5,63 situata nella costellazione del Cancro. Dista 1029 anni luce dal sistema solare. (it) 45 Cancri (A¹ Cancri) é uma estrela na direção da Cancer. Possui uma ascensão reta de 08h 43m 12.34s e uma declinação de +12° 40′ 51.1″. Sua magnitude aparente é igual a 5.62. Considerando sua distância de 1028 anos-luz em relação à Terra, sua magnitude absoluta é igual a −1.87. Pertence à classe espectral A3V+.... (pt) 45 Cancri, som är stjärnans Flamsteed-beteckning, är en dubbelstjärna, belägen i den mellersta delen av stjärnbilden Kräftan och har även Bayer-beteckningen A1 Cancri. Den har en kombinerad skenbar magnitud av ca 5,62 och är svagt synlig för blotta ögat där ljusföroreningar ej förekommer. Baserat på parallax enligt Gaia Data Release 2 på ca 4,8 mas, beräknas den befinna sig på ett avstånd på ca 680 ljusår (ca 210 parsek). Den rör sig närmare solen med en heliocentrisk radialhastighet på ca -6 km/s. (sv) 45 Рака (лат. 45 Cancri) — звезда в созвездии Рака. Удалена на расстояние 1029 световых лет от нас и имеет видимую величину +5.63. Это белая карликовая звезда класса А главной последовательности. (ru) |
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| dbo:wikiPageRevisionID | 1079515396 (xsd:integer) |
| dbo:wikiPageWikiLink | dbr:Cancer_(constellation) dbr:Bayer_designation dbr:Binary_star dbr:Stellar_classification dbc:A-type_giants dbc:Bayer_objects dbc:Binary_stars dbc:Bright_Star_Catalogue_objects dbc:Cancer_(constellation) dbc:Durchmusterung_objects dbc:Flamsteed_objects dbc:G-type_giants dbc:Henry_Draper_Catalogue_objects dbc:Hipparcos_objects dbr:Constellation dbr:Photosphere dbr:Effective_temperature dbr:Red_giant_branch dbr:Light-year dbr:Star dbr:Orbital_period dbr:Sun dbr:Zodiac dbr:Spectroscopic_binary dbr:Apparent_visual_magnitude dbr:Orbital_eccentricity dbr:Radial_velocity dbr:Flamsteed_designation dbr:Giant_star dbr:Mass_of_the_Sun dbr:Sun's_radius dbr:Luminosity_of_the_Sun |
| dbp:absmagV | −1.62 (en) |
| dbp:appmagV | 5.620000 (xsd:double) |
| dbp:class | (en) G8 III and A3 III (en) |
| dbp:component | 45 (xsd:integer) |
| dbp:constell | dbr:Cancer_(constellation) |
| dbp:epoch | J2000.0 (en) |
| dbp:gravity | 2.720000 (xsd:double) |
| dbp:pError | 0.102500 (xsd:double) |
| dbp:parallax | 4.770000 (xsd:double) |
| dbp:propMoDec | +0.916 (en) |
| dbp:propMoRa | −9.828 (en) |
| dbp:rotationalVelocity | 5.300000 (xsd:double) |
| dbp:temperature | 5058 (xsd:integer) |
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| dct:subject | dbc:A-type_giants dbc:Bayer_objects dbc:Binary_stars dbc:Bright_Star_Catalogue_objects dbc:Cancer_(constellation) dbc:Durchmusterung_objects dbc:Flamsteed_objects dbc:G-type_giants dbc:Henry_Draper_Catalogue_objects dbc:Hipparcos_objects |
| gold:hypernym | dbr:Star |
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| rdfs:comment | 45 Cancri è una stella bianca nella sequenza principale di magnitudine 5,63 situata nella costellazione del Cancro. Dista 1029 anni luce dal sistema solare. (it) 45 Cancri (A¹ Cancri) é uma estrela na direção da Cancer. Possui uma ascensão reta de 08h 43m 12.34s e uma declinação de +12° 40′ 51.1″. Sua magnitude aparente é igual a 5.62. Considerando sua distância de 1028 anos-luz em relação à Terra, sua magnitude absoluta é igual a −1.87. Pertence à classe espectral A3V+.... (pt) 45 Cancri, som är stjärnans Flamsteed-beteckning, är en dubbelstjärna, belägen i den mellersta delen av stjärnbilden Kräftan och har även Bayer-beteckningen A1 Cancri. Den har en kombinerad skenbar magnitud av ca 5,62 och är svagt synlig för blotta ögat där ljusföroreningar ej förekommer. Baserat på parallax enligt Gaia Data Release 2 på ca 4,8 mas, beräknas den befinna sig på ett avstånd på ca 680 ljusår (ca 210 parsek). Den rör sig närmare solen med en heliocentrisk radialhastighet på ca -6 km/s. (sv) 45 Рака (лат. 45 Cancri) — звезда в созвездии Рака. Удалена на расстояние 1029 световых лет от нас и имеет видимую величину +5.63. Это белая карликовая звезда класса А главной последовательности. (ru) 45 Cancri is a binary star system in the zodiac constellation of Cancer, located 680 light-years away from the Sun. It has the Bayer designation A1 Cancri; 45 Cancri is the Flamsteed designation. It is visible to the naked eye as a faint, white-hued star at an apparent visual magnitude of 5.62. The pair form a double-lined spectroscopic binary with an orbital period of 2.76 years and an eccentricity of 0.46. They are drifting closer to the Earth with a heliocentric radial velocity of −6 km/s. (en) |
| rdfs:label | 45 Cancri (en) 45 Cancri (it) 45 Cancri (pt) 45 Cancri (sv) 45 Рака (ru) |
| owl:sameAs | freebase:45 Cancri yago-res:45 Cancri wikidata:45 Cancri dbpedia-it:45 Cancri dbpedia-pt:45 Cancri dbpedia-ru:45 Cancri dbpedia-sv:45 Cancri https://global.dbpedia.org/id/2Gf3s |
| prov:wasDerivedFrom | wikipedia-en:45_Cancri?oldid=1079515396&ns=0 |
| foaf:isPrimaryTopicOf | wikipedia-en:45_Cancri |
| foaf:name | 45 Cancri (en) |
| is dbo:wikiPageWikiLink of | dbr:Chinese_star_names dbr:Table_of_stars_with_Bayer_designations dbr:A_Cancri dbr:Cancer_in_Chinese_astronomy dbr:Table_of_stars_with_Flamsteed_designations dbr:List_of_stars_in_Cancer |
| is foaf:primaryTopic of | wikipedia-en:45_Cancri |