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Theta Crateris (θ Crateris) is a solitary star in the southern constellation of Crater. It is a photometric-standard star that is faintly visible to the naked eye with an apparent visual magnitude of 4.70. With an annual parallax shift of 11.63 mas as seen from Earth, it is located around 280 light years from the Sun. At that distance, the visual magnitude of the star is diminished by an extinction factor of 0.07 because of interstellar dust.

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  • Theta Crateris (es)
  • Theta Crateris (pt)
  • Theta Crateris (en)
  • Theta Crateris (sv)
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  • Theta Crateris (21 Crateris) é uma estrela na direção da constelação de Crater. Possui uma ascensão reta de 11h 36m 40.95s e uma declinação de −09° 48′ 08.1″. Sua magnitude aparente é igual a 4.70. Considerando sua distância de 305 anos-luz em relação à Terra, sua magnitude absoluta é igual a −0.15. Pertence à classe espectral B9.5Vn. (pt)
  • Theta Crateris (θ Crateris, förkortat Theta Crt, θ Crt) som är stjärnans Bayerbeteckning, är en ensam stjärna och fotometrisk standardstjärna, belägen i den norra delen av stjärnbilden Bägaren. 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 11,6 mas, beräknas den befinna sig på ett avstånd på ca 280 ljusår (ca 85 parsek) från solen. På det beräknade avståndet minskar stjärnans skenbara magnitud med en skymningsfaktor på 0,07 på grund av interstellärt stoft. (sv)
  • Theta Crateris (θ Crt / 21 Crateris / HD 100889 / HR 4468) es una estrella de la constelación Crater de magnitud aparente +4,60.​De acuerdo al Bright Star Catalogue es la cuarta estrella más brillante en la constelación, superada por Labrum (δ Crateris), Alkes (α Crateris), γ Crateris y .​ Es una estrella semejante a Markab (α Pegasi) y Al Thalimain Prior (λ Aquilae), pero su distancia respecto al Sistema Solar, 305 años luz, es más del doble que el de estas. (es)
  • Theta Crateris (θ Crateris) is a solitary star in the southern constellation of Crater. It is a photometric-standard star that is faintly visible to the naked eye with an apparent visual magnitude of 4.70. With an annual parallax shift of 11.63 mas as seen from Earth, it is located around 280 light years from the Sun. At that distance, the visual magnitude of the star is diminished by an extinction factor of 0.07 because of interstellar dust. (en)
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  • Theta Crateris (en)
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absmag v
  • +0.63 (en)
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