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- Pi2 Ursae Minoris (π2 Ursae Minoris / π2 UMi) est une étoile binaire de la constellation circumpolaire de la Petite Ourse d'une magnitude apparente combinée de +6,95, ce qui fait qu'elle n'est pas visible à l’œil nu. Le système est distant d'environ ∼390 a.l. (∼120 pc) du Soleil, et il se rapproche du système solaire avec une vitesse radiale de −32,1 km/s. Les deux étoiles sont distantes en moyenne de 0,464 seconde d'arc dans le ciel, et elles effectuent une orbite l'une autour de l'autre avec une période d'environ 170 ans. L'étoile primaire, désignée π2 Ursae Minoris A, est une étoile jaune-blanc de la séquence principale de type spectral F1V et de magnitude apparente 7,32. L'étoile secondaire, désignée π2 Ursae Minoris B, est une naine jaune de type G0 et de magnitude apparente 8,15. (fr)
- Pi2 Ursae Minoris, which is Latinized from π2 UMi Ursae Minoris, is a binary star system in the northern circumpolar constellation of Ursa Minor. The pair have a combined apparent visual magnitude of 6.89, which can be viewed with a pair of binoculars. They are located at a distance of approximately 400 light years from the Sun based on parallax, but are drifting closer with a radial velocity of −32 km/s. This star was found to be a double system by O. Struve in 1832, and the pair have now completed a full orbit. There is a lot of scatter in the data though, so the grade of the orbital elements is rated as poor. The system has a high eccentricity of 0.96 and they orbit each other with a period of roughly 172 years. The magnitude 7.32 primary is an F-type main-sequence star with a stellar classification of F1V. The fainter secondary has a magnitude of 8.15 and is G-type star.At present the angular separation between both stars is 0.67 arcseconds [1]. (en)
- Pi2 Ursae Minoris (π2 Ursae Minoris, förkortat Pi2 UMi, π2 UMi) som är stjärnans Bayer-beteckning, är en dubbelstjärna i den mellersta delen av stjärnbilden Stora Björnen. Den har en kombinerad skenbar magnitud på +6,95 och ligger under gränsen för att vara synlig för blotta ögat. Baserat på parallaxmätningar i Hipparcos-uppdraget på 8,3 mas beräknas den befinna sig på ca 390 ljusårs (120 parsek) avstånd från solen. (sv)
- Pi2 Ursae Minoris (18 Ursae Minoris) é uma estrela na direção da constelação de Ursa Minor. Possui uma ascensão reta de 15h 39m 38.72s e uma declinação de +79° 58′ 59.2″. Sua magnitude aparente é igual a 6.89. Considerando sua distância de 384 anos-luz em relação à Terra, sua magnitude absoluta é igual a 1.54. Pertence à classe espectral F2. (pt)
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- (en)
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- Pi2 Ursae Minoris (π2 Ursae Minoris, förkortat Pi2 UMi, π2 UMi) som är stjärnans Bayer-beteckning, är en dubbelstjärna i den mellersta delen av stjärnbilden Stora Björnen. Den har en kombinerad skenbar magnitud på +6,95 och ligger under gränsen för att vara synlig för blotta ögat. Baserat på parallaxmätningar i Hipparcos-uppdraget på 8,3 mas beräknas den befinna sig på ca 390 ljusårs (120 parsek) avstånd från solen. (sv)
- Pi2 Ursae Minoris (18 Ursae Minoris) é uma estrela na direção da constelação de Ursa Minor. Possui uma ascensão reta de 15h 39m 38.72s e uma declinação de +79° 58′ 59.2″. Sua magnitude aparente é igual a 6.89. Considerando sua distância de 384 anos-luz em relação à Terra, sua magnitude absoluta é igual a 1.54. Pertence à classe espectral F2. (pt)
- Pi2 Ursae Minoris (π2 Ursae Minoris / π2 UMi) est une étoile binaire de la constellation circumpolaire de la Petite Ourse d'une magnitude apparente combinée de +6,95, ce qui fait qu'elle n'est pas visible à l’œil nu. Le système est distant d'environ ∼390 a.l. (∼120 pc) du Soleil, et il se rapproche du système solaire avec une vitesse radiale de −32,1 km/s. (fr)
- Pi2 Ursae Minoris, which is Latinized from π2 UMi Ursae Minoris, is a binary star system in the northern circumpolar constellation of Ursa Minor. The pair have a combined apparent visual magnitude of 6.89, which can be viewed with a pair of binoculars. They are located at a distance of approximately 400 light years from the Sun based on parallax, but are drifting closer with a radial velocity of −32 km/s. (en)
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- Pi2 Ursae Minoris (fr)
- Pi2 Ursae Minoris (en)
- Pi2 Ursae Minoris (pt)
- Pi2 Ursae Minoris (sv)
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