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Pi1 Ursae Minoris is a common proper motion binary star system in the northern circumpolar constellation of Ursa Minor. The pair have apparent visual magnitudes of +6.58 and +7.31, with a combined magnitude of 6.1. They are located about 71 light years from the Sun. The two have an angular separation of 31.4 arc seconds, which corresponds to a physical separation of about 680 AU, and orbit each other with a period of about 13,100 years.

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  • Pi1 Ursae Minoris (fr)
  • Pi1 Ursae Minoris (en)
  • Pi1 Ursae Minoris (pt)
  • Pi1 Ursae Minoris (sv)
  • Пи¹ Малой Медведицы (ru)
  • HD 139777 (zh)
rdfs:comment
  • Пи¹ Малой Медведицы (π¹ UMi / π¹ Ursae Minoris) — обозначение Байера двойной звезды созвездия Малой Медведицы в 22 пк от Солнца. Система имеет общую видимую звездную величину 6,13m и не относится к звёздам, видимым невооруженным глазом. (ru)
  • Pi1 Ursae Minoris (π11 Ursae Minoris, förkortat Pi1 UMi, π1 UMi) som är stjärnans Bayer-beteckning, är en dubbelstjärna i den norra delen av stjärnbilden Lilla björnen. Den har en genomsnittlig skenbar magnitud på +6,58 och ligger på gränsen för att vara synlig för blotta ögat även under de bästa observationsförhållanden. Baserat på parallaxmätningar i Hipparcos-uppdraget på 45,8 mas beräknas den befinna sig på ca 71 ljusårs (22 parsek) avstånd från solen. (sv)
  • Pi1 Ursae Minoris (Ursae Minoris) é uma estrela na direção da constelação de Ursa Minor. Possui uma ascensão reta de 15h 29m 11.97s e uma declinação de +80° 26′ 54.0″. Sua magnitude aparente é igual a 6.57. Considerando sua distância de 72 anos-luz em relação à Terra, sua magnitude absoluta é igual a 4.85. Pertence à classe espectral G8IV-V+.... (pt)
  • HD 139777,又名BD+80 480,SAO 2556、HR 5829,是一颗恒星,视星等为6.58,位于銀經115.6,銀緯34.31,其B1900.0坐标为赤經15h 34m 58.7s,赤緯+80° 34.31′ 49″。 (zh)
  • Pi1 Ursae Minoris is a common proper motion binary star system in the northern circumpolar constellation of Ursa Minor. The pair have apparent visual magnitudes of +6.58 and +7.31, with a combined magnitude of 6.1. They are located about 71 light years from the Sun. The two have an angular separation of 31.4 arc seconds, which corresponds to a physical separation of about 680 AU, and orbit each other with a period of about 13,100 years. (en)
  • Pi1 Ursae Minoris est une étoile binaire de la constellation circumpolaire de la Petite Ourse, dont les composantes sont toutes deux des naines jaunes. La paire brille d'une magnitude apparente combinée de 6,1, et chaque étoile a une magnitude apparente de +6,58 et de +7,31, respectivement. Elles sont distantes d'environ ∼71 a.l. (∼21,8 pc) du Soleil, et elles partagent un mouvement propre commun. Les deux étoiles sont séparées dans le ciel de 31,4 secondes d'arc, ce qui correspond, étant donné leur distance de la Terre, à une séparation physique d'environ 680 UA. Elles orbitent l'une autour de l'autre avec une période d'environ 13 100 ans. (fr)
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  • π1 Ursae Minoris (en)
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metal2 fe
  • −0.18 (en)
appmag v
  • +6.58 (en)
  • +7.31 (en)
b-v
  • +0.79 (en)
  • +0.67 (en)
class
  • G9 V (en)
  • G1.5 V (en)
component
  • π1 UMi A (en)
  • π1 UMi B (en)
constell
epoch
equinox
  • J2000.0 (en)
gravity
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