Theta Mensae
http://dbpedia.org/resource/Theta_Mensae an entity of type: Thing
Theta Mensae (42 Mensae) é uma estrela na direção da constelação de Mensa. Possui uma ascensão reta de 06h 56m 34.48s e uma declinação de −79° 25′ 12.7″. Sua magnitude aparente é igual a 5.45. Considerando sua distância de 356 anos-luz em relação à Terra, sua magnitude absoluta é igual a 0.26. Pertence à classe espectral B9.5V.
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Theta Mensae är en blåvit jätte eller underjätte i Taffelbergets stjärnbild. Stjärnan har visuell magnitud +5,45 och är svagt synlig för blotta ögat vid god seeing. Den befinner sig på ett avstånd av ungefär 350 ljusår.
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山案座θ，又名CP-79 238，HD 54239、SAO 256355、HR 2689，是山案座的一颗恒星，视星等为5.45，位于銀經291.11，銀緯-26.4，其B1900.0坐标为赤經7h 2m 54s，赤緯-79° -26.4′ 36″。
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θ Mensae, Latinized to Theta Mensae, is a star located in the southern circumpolar constellation Mensa. It has an apparent magnitude of 5.45, making it faintly visible to the naked eye if viewed under ideal conditions. Based on parallax measurements from Gaia Data Release 3, the object is estimated to be 385 light years distant. The value is horribly constrained, but it appears to be receding with a heliocentric radial velocity of 6 km/s.
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Theta Mensae
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Theta Mensae
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山案座θ
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Theta Mensae
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θ Mensae
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B9.5 V
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θ Mensae, Latinized to Theta Mensae, is a star located in the southern circumpolar constellation Mensa. It has an apparent magnitude of 5.45, making it faintly visible to the naked eye if viewed under ideal conditions. Based on parallax measurements from Gaia Data Release 3, the object is estimated to be 385 light years distant. The value is horribly constrained, but it appears to be receding with a heliocentric radial velocity of 6 km/s. This is a solitary, B-type main-sequence star with a stellar classification of B9.5 V. Houk and Cowley (1975) give it a class of B9.5/A0 III/IV, indicating that it is a B9.5-A0 star with the blended luminosity class of a giant star and a subgiant. Nevertheless, Theta Mensae has 2.87 times the Sun’s mass and a enlarged radius of 4.37 R☉. It radiates 124 solar luminosities from its photosphere and it has an effective temperature of 9,938 K, giving it a bluish-white hue. It is estimated to be 266 million years old, having completed 85.2% of its main sequence lifetime, hence the large radius. Like most hot stars, it spins rapidly, having a projected rotational velocity of 209 km/s. Data from the Transiting Exoplanet Survey Satellite suggests that Theta Mensae may be a slowly pulsating B-type star plus a variable star with rotation modulations
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Theta Mensae (42 Mensae) é uma estrela na direção da constelação de Mensa. Possui uma ascensão reta de 06h 56m 34.48s e uma declinação de −79° 25′ 12.7″. Sua magnitude aparente é igual a 5.45. Considerando sua distância de 356 anos-luz em relação à Terra, sua magnitude absoluta é igual a 0.26. Pertence à classe espectral B9.5V.
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Theta Mensae är en blåvit jätte eller underjätte i Taffelbergets stjärnbild. Stjärnan har visuell magnitud +5,45 och är svagt synlig för blotta ögat vid god seeing. Den befinner sig på ett avstånd av ungefär 350 ljusår.
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山案座θ，又名CP-79 238，HD 54239、SAO 256355、HR 2689，是山案座的一颗恒星，视星等为5.45，位于銀經291.11，銀緯-26.4，其B1900.0坐标为赤經7h 2m 54s，赤緯-79° -26.4′ 36″。
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