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HD 90156 (HIP 50921 / SAO 178771 / GJ 3597 … HD 90156 (HIP 50921 / SAO 178771 / GJ 3597) es una estrella de magnitud aparente +6,95.Está encuadrada en la constelación de Hidra cerca del límite con Antlia, a poco más de 1,5º al norte de α Antliae.Distante 72 años luz del Sistema Solar, desde 2009 se conoce la existencia de un planeta extrasolar en órbita alrededor de esta estrella.lar en órbita alrededor de esta estrella.
, HD 90156, autrefois connue sous le nom γ ( … HD 90156, autrefois connue sous le nom γ (Gamma) Antliae, est une étoile de la séquence principale de type spectral G localisée à ∼71,6 a.l. (∼22 pc) de la Terre dans la constellation de l'Hydre. Cette étoile est plus petite, plus froide, plus pâle et moins massive que le Soleil. Sa métallicité est également de moitié plus élevée que le Soleil. En 2009, une planète gazeuse a été identifiée en orbite autour de cette étoile. Nicolas-Louis de Lacaille lui donne le nom de γ Antliae, et Benjamin Gould la conserve dans la constellation de la Machine pneumatique. Cependant, le tracé des frontières des constellations en 1930 entraîne le transfert de cette étoile à la constellation de l'Hydre.ette étoile à la constellation de l'Hydre.
, HD 90156 är en ensam stjärna belägen i den … HD 90156 är en ensam stjärna belägen i den södra delen av stjärnbilden Vattenormen. Stjärnan placerade som Gamma Antliae av Lacaille, och Gould hade för avsikt att behålla den i den stjärnbilden, men justering av stärnbildernas gränser år 1930 ledde till att den överfördes till Vattenormen. Den har en skenbar magnitud av ca 6,92 och kräver åtminstone en handkikare för att kunna observeras. Baserat på parallaxmätning inom Hipparcosuppdraget på ca 44,7 mas, beräknas den befinna sig på ett avstånd på ca 73 ljusår (ca 22 parsek) från solen. Den rör sig bort från solen med en heliocentrisk radialhastighet på ca 27 km/s.liocentrisk radialhastighet på ca 27 km/s.
, HD 90156 is a 7th magnitude G-type main se … HD 90156 is a 7th magnitude G-type main sequence star located approximately 73 light years away in the constellation Hydra. This star is smaller, cooler, fainter, and less massive than the Sun. Also its metal content is over half as much as the Sun. In 2009, a gas giant planet was found in orbit around the star. This star was designated as Gamma Antliae by Lacaille, and Gould intended to keep it in that constellation. However, the delineating of constellation boundaries in 1930 saw it transferred to Hydra. The survey in 2015 have ruled out the existence of any stellar companions at projected distances above 5 astronomical units.cted distances above 5 astronomical units.
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HD 90156, autrefois connue sous le nom γ ( … HD 90156, autrefois connue sous le nom γ (Gamma) Antliae, est une étoile de la séquence principale de type spectral G localisée à ∼71,6 a.l. (∼22 pc) de la Terre dans la constellation de l'Hydre. Cette étoile est plus petite, plus froide, plus pâle et moins massive que le Soleil. Sa métallicité est également de moitié plus élevée que le Soleil. En 2009, une planète gazeuse a été identifiée en orbite autour de cette étoile.entifiée en orbite autour de cette étoile.
, HD 90156 är en ensam stjärna belägen i den … HD 90156 är en ensam stjärna belägen i den södra delen av stjärnbilden Vattenormen. Stjärnan placerade som Gamma Antliae av Lacaille, och Gould hade för avsikt att behålla den i den stjärnbilden, men justering av stärnbildernas gränser år 1930 ledde till att den överfördes till Vattenormen. Den har en skenbar magnitud av ca 6,92 och kräver åtminstone en handkikare för att kunna observeras. Baserat på parallaxmätning inom Hipparcosuppdraget på ca 44,7 mas, beräknas den befinna sig på ett avstånd på ca 73 ljusår (ca 22 parsek) från solen. Den rör sig bort från solen med en heliocentrisk radialhastighet på ca 27 km/s.liocentrisk radialhastighet på ca 27 km/s.
, HD 90156 is a 7th magnitude G-type main se … HD 90156 is a 7th magnitude G-type main sequence star located approximately 73 light years away in the constellation Hydra. This star is smaller, cooler, fainter, and less massive than the Sun. Also its metal content is over half as much as the Sun. In 2009, a gas giant planet was found in orbit around the star. This star was designated as Gamma Antliae by Lacaille, and Gould intended to keep it in that constellation. However, the delineating of constellation boundaries in 1930 saw it transferred to Hydra.aries in 1930 saw it transferred to Hydra.
, HD 90156 (HIP 50921 / SAO 178771 / GJ 3597 … HD 90156 (HIP 50921 / SAO 178771 / GJ 3597) es una estrella de magnitud aparente +6,95.Está encuadrada en la constelación de Hidra cerca del límite con Antlia, a poco más de 1,5º al norte de α Antliae.Distante 72 años luz del Sistema Solar, desde 2009 se conoce la existencia de un planeta extrasolar en órbita alrededor de esta estrella.lar en órbita alrededor de esta estrella.
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