Phi Cygni (original) (raw)
Phi Cygni, latinizzato da φ Cygni, è una stella binaria sita nella costellazione settentrionale del Cigno. È debolmente visibile a occhio nudo con una magnitudine visiva apparente di 4,70. La parallasse annua è di 12,25 mas misurata dalla Terra, che fornisce una stima della distanza di circa 266 al. Si sta allontanando ulteriormente dal Sole con una velocità radiale di +4,5 km/s.
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| dbo:abstract | Phi Cygni, Latinized from φ Cygni, is a binary star system in the northern constellation of Cygnus. It is faintly visible to the naked eye with an apparent visual magnitude of 4.70. The annual parallax shift is 12.25 mas as measured from Earth, which yields a distance estimate of around 266 light years. It is moving further from the Sun with a radial velocity of +4.5 km/s. φ Cygni is a double-lined spectroscopic binary system, which means that the absorption lines of both components are visible in the spectrum. The two sets of spectral lines are almost identical and both stars are assigned a spectral type of K0III, meaning they have evolved into giants. They are considered to be red clump giants, stars that have begun core helium fusion and lie on the horizontal branch but because of their metallicity and the size of their hydrogen envelope they are found very close to the red giant branch. The two stars are assumed to have the same age, which would be around 650 million years. The pair have an orbital period of 434.208 days, or 1.2 Earth years, a semimajor axis of 26.9 mas, and a high eccentricity of 0.56. (en) Phi Cygni, latinizzato da φ Cygni, è una stella binaria sita nella costellazione settentrionale del Cigno. È debolmente visibile a occhio nudo con una magnitudine visiva apparente di 4,70. La parallasse annua è di 12,25 mas misurata dalla Terra, che fornisce una stima della distanza di circa 266 al. Si sta allontanando ulteriormente dal Sole con una velocità radiale di +4,5 km/s. (it) Phi Cygni (12 Cygni) é uma estrela binária na direção da constelação de Cygnus. Possui uma ascensão reta de 19h 39m 22.60s e uma declinação de +30° 09′ 11.6″. Sua magnitude aparente é igual a 4.68. Considerando sua distância de 251 anos-luz em relação à Terra, sua magnitude absoluta é igual a 0.25. Pertence à classe espectral G8III-IV.... É um sistema binário espetroscópico. (pt) Fi Cygni (φ Cygni, förkortat Fi Cyg, φ Cyg) som är stjärnans Bayerbeteckning, är en dubbelstjärna belägen i den sydvästra delen av stjärnbilden Svanen (stjärnbild). Den har en skenbar magnitud på 4,70 och är svagt synlig för blotta ögat där ljusföroreningar ej förekommer. Baserat på parallaxmätning inom Hipparcosuppdraget på ca 12,3 mas, beräknas den befinna sig på ett avstånd på ca 260 ljusår (ca 82 parsek) från solen. (sv) 天鵝座φ，又名BD+29 3684，HD 185734、SAO 68637、HR 7478，是天鵝座的一颗恒星，视星等为4.69，位于銀經64.95，銀緯3.97，其B1900.0坐标为赤經19h 35m 25.6s，赤緯+29° 3.97′ 22″。 (zh) |
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| dbp:absmagV | (en) +0.12 (en) |
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| dbp:appmagV | 4.700000 (xsd:double) (en) |
| dbp:axis | 26.900000 (xsd:double) |
| dbp:bV | +0.98 (en) |
| dbp:class | K0III + K0III (en) |
| dbp:component | A (en) B (en) |
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| dbp:epoch | J2000 (en) |
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| dbp:luminosity | 34 (xsd:integer) 44 (xsd:integer) |
| dbp:mass | 2.060000 (xsd:double) 2.160000 (xsd:double) |
| dbp:metalFe | −0.11 (en) |
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| dbp:propMoDec | +36.50 (en) |
| dbp:propMoRa | +2.48 (en) |
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| rdfs:comment | Phi Cygni, latinizzato da φ Cygni, è una stella binaria sita nella costellazione settentrionale del Cigno. È debolmente visibile a occhio nudo con una magnitudine visiva apparente di 4,70. La parallasse annua è di 12,25 mas misurata dalla Terra, che fornisce una stima della distanza di circa 266 al. Si sta allontanando ulteriormente dal Sole con una velocità radiale di +4,5 km/s. (it) Phi Cygni (12 Cygni) é uma estrela binária na direção da constelação de Cygnus. Possui uma ascensão reta de 19h 39m 22.60s e uma declinação de +30° 09′ 11.6″. Sua magnitude aparente é igual a 4.68. Considerando sua distância de 251 anos-luz em relação à Terra, sua magnitude absoluta é igual a 0.25. Pertence à classe espectral G8III-IV.... É um sistema binário espetroscópico. (pt) Fi Cygni (φ Cygni, förkortat Fi Cyg, φ Cyg) som är stjärnans Bayerbeteckning, är en dubbelstjärna belägen i den sydvästra delen av stjärnbilden Svanen (stjärnbild). Den har en skenbar magnitud på 4,70 och är svagt synlig för blotta ögat där ljusföroreningar ej förekommer. Baserat på parallaxmätning inom Hipparcosuppdraget på ca 12,3 mas, beräknas den befinna sig på ett avstånd på ca 260 ljusår (ca 82 parsek) från solen. (sv) 天鵝座φ，又名BD+29 3684，HD 185734、SAO 68637、HR 7478，是天鵝座的一颗恒星，视星等为4.69，位于銀經64.95，銀緯3.97，其B1900.0坐标为赤經19h 35m 25.6s，赤緯+29° 3.97′ 22″。 (zh) Phi Cygni, Latinized from φ Cygni, is a binary star system in the northern constellation of Cygnus. It is faintly visible to the naked eye with an apparent visual magnitude of 4.70. The annual parallax shift is 12.25 mas as measured from Earth, which yields a distance estimate of around 266 light years. It is moving further from the Sun with a radial velocity of +4.5 km/s. (en) |
| rdfs:label | Phi Cygni (it) Phi Cygni (en) Phi Cygni (pt) Fi Cygni (sv) 辇道增六 (zh) |
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| foaf:name | φ Cygni (en) |
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