Mu Eridani (original) (raw)
Mu Eridani (μ Eridani, μ Eri) è una stella binaria a eclisse, appartenente in particolare alla classe delle variabili Algol, situata nella costellazione dell'Eridano. Situata a circa 520 anni luce dal sistema solare, la sua magnitudine apparente pari a +4,00 fa sì che questa stella binaria sia visibile a occhio nudo.
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| dbo:abstract | Mu Eridani (μ Eri) est une étoile binaire de la constellation de l'Éridan. Elle est visible à l’œil nu avec une magnitude apparente de 4,00. Avec une parallaxe annuelle de 6,25 millisecondes d'arc, elle est située à environ 520 années-lumière du Soleil. En 1910, elle a été identifiée comme étant une étoile binaire spectroscopique à un spectre. Les composantes orbitent autour du centre de masse avec une période de 7,38 jours et une excentricité de 0,344, durant laquelle elles subissent des éclipses de type Algol. La primaire est une étoile de type B à pulsations lentes de type spectral B5 IV. Elle possède une vitesse de rotation relativement élevée avec une vitesse de rotation projetée de 130 km/s, ce qui correspond à moins 30 % de la de l'étoile. L'étoile a environ six fois la masse et le rayon du Soleil, et la luminosité émise par son atmosphère externe est égale à 1905 fois la luminosité solaire, avec une température effective de 15 668 K. (fr) Mu Eridani (μ Eridani) is a binary star system in the constellation Eridanus. It is visible to the naked eye with an apparent visual magnitude of 4.00. Based upon an annual parallax shift of 0.00625 arcseconds, it is located roughly 520 light years from the Sun. In 1910, this was determined to be a single-lined spectroscopic binary star system. The pair orbit each other with a period of 7.38 days and an eccentricity of 0.344, during which they undergo Algol-like eclipses. The primary is a slowly pulsating B-type star with a stellar classification of B5 IV. It has a relatively high rate of rotation with a projected rotational velocity of 130 km/s, which is at least 30% of the star's break-up velocity. The star has about six times the Sun's mass and radius, and it shines with 1,905 times the solar luminosity from its outer atmosphere at an effective temperature of 15,668 K. (en) Mu Eridani (μ Eridani, μ Eri) è una stella binaria a eclisse, appartenente in particolare alla classe delle variabili Algol, situata nella costellazione dell'Eridano. Situata a circa 520 anni luce dal sistema solare, la sua magnitudine apparente pari a +4,00 fa sì che questa stella binaria sia visibile a occhio nudo. (it) My Eridani, (μ Eridani, förkortat My Eri, μ Eri) som är stjärnans Bayerbeteckning, eller 57 Eridani, är en dubbelstjärna belägen i den nordöstra delen av stjärnbilden Eridanus. Den har en genomsnittlig skenbar magnitud på 4,00 och är synlig för blotta ögat där ljusföroreningar ej förekommer. Baserat på parallaxmätning inom Hipparcosuppdraget på ca 6,3 mas, beräknas den befinna sig på ett avstånd på ca 520 ljusår (ca 160 parsek) från solen. (sv) Mu Eridani (57 Eridanus) é uma estrela na direção da constelação de Eridanus. Possui uma ascensão reta de 04h 45m 30.14s e uma declinação de −03° 15′ 16.6″. Sua magnitude aparente é igual a 4.01. Considerando sua distância de 532 anos-luz em relação à Terra, sua magnitude absoluta é igual a −2.05. Pertence à classe espectral B5IV. (pt) 波江座μ，又名BD-03 876，HD 30211、SAO 131468、HR 1520，是波江座的一颗恒星，视星等为4.02，位于銀經200.53，銀緯-29.34，其B1900.0坐标为赤經4h 40m 30s，赤緯-3° -29.34′ 16″。 (zh) |
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| dbp:appmagV | 4 (xsd:integer) |
| dbp:bV | −0.15 (en) |
| dbp:class | B5 IV (en) |
| dbp:component | μ Eri A (en) |
| dbp:constell | dbr:Eridanus_(constellation) |
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| dbp:periodUnitless | 637709.76 |
| dbp:propMoDec | −1.97 (en) |
| dbp:propMoRa | +0.25 (en) |
| dbp:radius | 6.100000 (xsd:double) |
| dbp:temperature | 15668 (xsd:integer) |
| dbp:uB | −0.60 (en) |
| dbp:variable | SPB and Algol (en) |
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| rdfs:comment | Mu Eridani (μ Eridani, μ Eri) è una stella binaria a eclisse, appartenente in particolare alla classe delle variabili Algol, situata nella costellazione dell'Eridano. Situata a circa 520 anni luce dal sistema solare, la sua magnitudine apparente pari a +4,00 fa sì che questa stella binaria sia visibile a occhio nudo. (it) My Eridani, (μ Eridani, förkortat My Eri, μ Eri) som är stjärnans Bayerbeteckning, eller 57 Eridani, är en dubbelstjärna belägen i den nordöstra delen av stjärnbilden Eridanus. Den har en genomsnittlig skenbar magnitud på 4,00 och är synlig för blotta ögat där ljusföroreningar ej förekommer. Baserat på parallaxmätning inom Hipparcosuppdraget på ca 6,3 mas, beräknas den befinna sig på ett avstånd på ca 520 ljusår (ca 160 parsek) från solen. (sv) Mu Eridani (57 Eridanus) é uma estrela na direção da constelação de Eridanus. Possui uma ascensão reta de 04h 45m 30.14s e uma declinação de −03° 15′ 16.6″. Sua magnitude aparente é igual a 4.01. Considerando sua distância de 532 anos-luz em relação à Terra, sua magnitude absoluta é igual a −2.05. Pertence à classe espectral B5IV. (pt) 波江座μ，又名BD-03 876，HD 30211、SAO 131468、HR 1520，是波江座的一颗恒星，视星等为4.02，位于銀經200.53，銀緯-29.34，其B1900.0坐标为赤經4h 40m 30s，赤緯-3° -29.34′ 16″。 (zh) Mu Eridani (μ Eridani) is a binary star system in the constellation Eridanus. It is visible to the naked eye with an apparent visual magnitude of 4.00. Based upon an annual parallax shift of 0.00625 arcseconds, it is located roughly 520 light years from the Sun. (en) Mu Eridani (μ Eri) est une étoile binaire de la constellation de l'Éridan. Elle est visible à l’œil nu avec une magnitude apparente de 4,00. Avec une parallaxe annuelle de 6,25 millisecondes d'arc, elle est située à environ 520 années-lumière du Soleil. (fr) |
| rdfs:label | Mu Eridani (fr) Mu Eridani (it) Mu Eridani (en) Mu Eridani (pt) My Eridani (sv) 九斿二 (zh) |
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