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HR 4339, autrefois connue sous le nom β (B … HR 4339, autrefois connue sous le nom β (Beta) Antliae, est une étoile blanche de la séquence principale située dans la constellation de l'Hydre. Située à 366±3 a.l. (∼112 pc) de la Terre, elle brille avec une luminosité d'environ 60 fois celle du Soleil et a une température de surface de 8 886 K. Nicolas-Louis de Lacaille lui donne le nom de β 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 97023 ( eller HR 4339) är en ensam stjä … HD 97023 ( eller HR 4339) är en ensam stjärna i den södra delen av stjärnbilden Vattenormen. Den har en skenbar magnitud av ca 5,79 och är svagt synlig för blotta ögat där ljusföroreningar ej förekommer. Baserat på parallax enligt Gaia Data Release 2 på ca 8,9 mas, beräknas den befinna sig på ett avstånd på ca 366 ljusår (ca 112 parsek) från solen. Den rör sig bort från solen med en heliocentrisk radialhastighet på ca 1,3 km/s.iocentrisk radialhastighet på ca 1,3 km/s.
, HD 97023，又名CD-31 8816，SAO 202149、HR 4339，是一颗恒星，视星等为5.81，位于銀經279.22，銀緯25.79，其B1900.0坐标为赤經11h 5m 4.9s，赤緯-31° 25.79′ 28″。
, HR 4339 is a single star in the equatorial … HR 4339 is a single star in the equatorial constellation of Hydra. It was designated as Beta Antliae by Lacaille, and Gould intended to keep it in that constellation. However, the delineating of constellation boundaries by the IAU in 1930 saw it transferred to Hydra. It has a white hue and is just visible to the naked eye with an apparent visual magnitude of 5.79. The distance to this star, as determined from parallax measurements, is approximately 366 light years. It is drifting further away with a radial velocity of +1.3 km/s. This object is an A-type main-sequence star with a stellar classification of A1V. It is a suspected variable star of unknown type and magnitude. The star has 2.6 times the mass of the Sun and it is spinning with a projected rotational velocity of 73 km/s. It is radiating around 72 times the luminosity of the Sun from its photosphere at an effective temperature of 9,120 K.re at an effective temperature of 9,120 K.
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| rdfs:comment |
HD 97023 ( eller HR 4339) är en ensam stjä … HD 97023 ( eller HR 4339) är en ensam stjärna i den södra delen av stjärnbilden Vattenormen. Den har en skenbar magnitud av ca 5,79 och är svagt synlig för blotta ögat där ljusföroreningar ej förekommer. Baserat på parallax enligt Gaia Data Release 2 på ca 8,9 mas, beräknas den befinna sig på ett avstånd på ca 366 ljusår (ca 112 parsek) från solen. Den rör sig bort från solen med en heliocentrisk radialhastighet på ca 1,3 km/s.iocentrisk radialhastighet på ca 1,3 km/s.
, HR 4339 is a single star in the equatorial … HR 4339 is a single star in the equatorial constellation of Hydra. It was designated as Beta Antliae by Lacaille, and Gould intended to keep it in that constellation. However, the delineating of constellation boundaries by the IAU in 1930 saw it transferred to Hydra. It has a white hue and is just visible to the naked eye with an apparent visual magnitude of 5.79. The distance to this star, as determined from parallax measurements, is approximately 366 light years. It is drifting further away with a radial velocity of +1.3 km/s. away with a radial velocity of +1.3 km/s.
, HD 97023，又名CD-31 8816，SAO 202149、HR 4339，是一颗恒星，视星等为5.81，位于銀經279.22，銀緯25.79，其B1900.0坐标为赤經11h 5m 4.9s，赤緯-31° 25.79′ 28″。
, HR 4339, autrefois connue sous le nom β (B … HR 4339, autrefois connue sous le nom β (Beta) Antliae, est une étoile blanche de la séquence principale située dans la constellation de l'Hydre. Située à 366±3 a.l. (∼112 pc) de la Terre, elle brille avec une luminosité d'environ 60 fois celle du Soleil et a une température de surface de 8 886 K. Nicolas-Louis de Lacaille lui donne le nom de β 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.
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HD 97023
, HR 4339
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