Alpha Sculptoris
Star α Sculptoris |
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AladinLite | |||||||||||||||||||
Observation dates equinox : J2000.0 , epoch : J2000.0 |
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Constellation | sculptor | ||||||||||||||||||
Right ascension | 00 h 58 m 36.36 s | ||||||||||||||||||
declination | −29 ° 21 ′ 26.8 ″ | ||||||||||||||||||
Apparent brightness | 4.27 likes | ||||||||||||||||||
Typing | |||||||||||||||||||
B − V color index | −0.18 | ||||||||||||||||||
U − B color index | −0.57 | ||||||||||||||||||
R − I index | −0.13 | ||||||||||||||||||
Spectral class | B7 IIIp | ||||||||||||||||||
Variable star type | SXARI | ||||||||||||||||||
Astrometry | |||||||||||||||||||
Radial velocity | (+9.6 ± 0.6) km / s | ||||||||||||||||||
parallax | (4.20 ± 0.18) mas | ||||||||||||||||||
distance | 780 ly 240 pc |
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Visual absolute brightness M vis | (−2.31 ± 0.38) mag | ||||||||||||||||||
Proper movement | |||||||||||||||||||
Rec. Share: | (+20.13 ± 0.20) mas / a | ||||||||||||||||||
Dec. portion: | (+5.31 ± 0.15) mas / a | ||||||||||||||||||
Physical Properties | |||||||||||||||||||
Dimensions | 5.0 M ☉ | ||||||||||||||||||
radius | 7 R ☉ | ||||||||||||||||||
Luminosity |
1500 L ☉ |
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Effective temperature | 13600 K | ||||||||||||||||||
Age | 90 mill. A | ||||||||||||||||||
Other names and catalog entries |
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α Sculptoris is the brightest star in the constellation Sculptor . The star is a blue giant and is about 800 light years away . The star is chemically peculiar as a so-called Bp star . He is also one of the rotationally variable SX Arietis stars .
See also
Individual evidence
- ↑ a b c d e f g h i alf Scl. In: SIMBAD . Center de Données astronomiques de Strasbourg , accessed on November 12, 2018 .
- ↑ a b alf Scl. In: VSX. AAVSO, accessed November 12, 2018 .
- ↑ a b c d O. Kochukhov, S. Bagnulo: Evolutionary state of magnetic chemically peculiar stars . In: Astronomy & Astrophysics . 450, No. 2, 2006, p. 763. arxiv : astro-ph / 0601461 . bibcode : 2006A & A ... 450..763K . doi : 10.1051 / 0004-6361: 20054596 .
- ↑ a b Alpha Scl. Jim Kaler, accessed November 12, 2018 .
- ↑ C. Saffe, H. Levato: On the nature of sn stars. I. A detailed abundance study . In: Astronomy & Astrophysics . 562, 2014, p. A128. arxiv : 1401.5764 . bibcode : 2014A & A ... 562A.128S . doi : 10.1051 / 0004-6361 / 201322091 .