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Lambda Ursae Minoris (λ UMi, λ Ursae Minoris) is a star in the constellation Ursa Minor. It is an M-type red giant with an apparent magnitude of +6.38 and is approximately 880 light years from Earth. Lambda Ursae Minoris is an asymptotic giant branch (AGB) star, a star that has exhausted its core hydrogen and helium and is now fusing material in shells outside its core. AGB stars are often unstable and tend to pulsate, and Lambda Ursae Minoris is classified as a semiregular variable star and its brightness varies by about 0.1 magnitudes. Its variability was discovered from Hipparcos astrometry and it was entered into the General Catalogue of Variable Stars in 1999.

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  • Lambda Ursae Minoris (es)
  • Lambda Ursae Minoris (fr)
  • Lambda Ursae Minoris (it)
  • Lambda Ursae Minoris (en)
  • こぐま座ラムダ星 (ja)
  • Lambda Ursae Minoris (pt)
  • Lambda Ursae Minoris (sv)
  • 勾陳增五 (zh)
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  • Lambda Ursae Minoris (λ UMi) è una stella della costellazione dell'Orsa Minore, di magnitudine apparente +6,35. Attualmente dista meno di 1 grado dal polo nord celeste. Dista 880 anni luce dal Sole. (it)
  • こぐま座λ星（こぐまざラムダせい）は、こぐま座の恒星で6等星。スペクトルM型の赤色巨星で、周期がゆっくり不規則に変動する半規則型変光星である。19世紀末に恒星の等級の原点が定められた際、当初基準とされたポラリス（北極星）に代わって原点とされ、6.5等級と定義された。その後標準となったジョンソンのUBVシステムでは、V等級は6.38等とされる。2018年現在、肉眼で見えるとされる6.5等級以上の明るさの恒星の中では、ポラリスに次いで2番目に天の北極に近い位置にある。 漸近巨星分枝 (AGB) に分類される巨星で、中心核での水素やヘリウムでの核融合が終わり、周囲のヘリウム殻または水素殻での核融合で輝いている段階にある。 (ja)
  • Lambda Ursae Minoris ( Ursae Minoris) é uma estrela na direção da constelação de Ursa Minor. Possui uma ascensão reta de 17h 16m 57.26s e uma declinação de +89° 02′ 15.8″. Sua magnitude aparente é igual a 6.31. Considerando sua distância de 876 anos-luz em relação à Terra, sua magnitude absoluta é igual a −0.84. Pertence à classe espectral M1III. (pt)
  • Lambda Ursae Minoris är en stjärna som ingår i stjärnbilden Lilla björnen. Den är av den skenbara ljusstyrkan +6,38, vilket gör att den inte går att se för blotta ögat. Dess Bayer-beteckning är tillagd i efterhand, på 1700-talet. Lambda UMi är en röd jätte på ungefär 880 ljusårs avstånd. Den är en misstänkt dubbelstjärna där följeslagaren är av 14:e magnituden. Den är också en variabel stjärna av typen halvregelbunden, som varierar med en amplitud på 0,1 magnitud. (sv)
  • 小熊座λ（Lambda Ursae Minoris）是一颗6.31等恒星。是一颗M型的红巨星，它是一颗半规则变星，距离地球888光年。其他名称有星表7394、HD星表183030、波恩星表+88 112、FK5 914、依巴谷卫星84535、史密松星表3020. (zh)
  • Lambda Ursae Minoris (λ UMi / HD 183030 / HR 7394 / HIP 84535) es una estrella en la constelación de la Osa Menor de magnitud aparente +6,35, siendo apenas observable a simple vista. Actualmente a poco menos de un grado del polo norte celeste, hace unos doscientos años Lambda Ursae Minoris fue la mejor estrella polar, ya que debido a la precesión de los equinoccios el polo norte celeste describe un círculo alrededor del polo norte de la eclíptica cada 25 780 años. De hecho, el polo norte celeste pasará entre Lamda Ursae Minoris y Polaris (α Ursae Minoris) en el año 2060. (es)
  • Lambda Ursae Minoris (λ UMi, λ Ursae Minoris) is a star in the constellation Ursa Minor. It is an M-type red giant with an apparent magnitude of +6.38 and is approximately 880 light years from Earth. Lambda Ursae Minoris is an asymptotic giant branch (AGB) star, a star that has exhausted its core hydrogen and helium and is now fusing material in shells outside its core. AGB stars are often unstable and tend to pulsate, and Lambda Ursae Minoris is classified as a semiregular variable star and its brightness varies by about 0.1 magnitudes. Its variability was discovered from Hipparcos astrometry and it was entered into the General Catalogue of Variable Stars in 1999. (en)
  • Lambda Ursae Minoris (λ UMi / λ Ursae Minoris) est une étoile de la constellation circumpolaire boréale de la Petite Ourse. Elle est à limite de la visibilité à l’œil nu avec une magnitude apparente de +6,38 et elle est distante d'environ ∼880 a.l. (∼270 pc) de la Terre. Le rayon de Lambda Ursae Minoris fait 64 fois celui du Soleil et la température de son atmosphère externe est de 3 772 K. Elle est 741 fois plus lumineuse que le Soleil. (fr)
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  • λ Ursae Minoris (en)
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