SX Arietis

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Star
SX Arietis
AladinLite
Observation
dates equinox :  J2000.0 , epoch : J2000.0
Constellation Aries
Right ascension 03 h 12 m 14.25 s
declination + 27 ° 15 ′ 25.1 ″
Apparent brightness 5.76 (5.75-5.81) mag
Typing
B − V color index −0.12 
U − B color index −0.42 
Spectral class B9pSi
Variable star type SXARI 
Astrometry
Radial velocity (16) km / s
parallax (8.04 ± 0.17)  mas
distance (405 ± 10)  ly
124  pc
Proper movement 
Rec. Share: (+12.04 ± 0.35)  mas / a
Dec. portion: (−18.79 ± 0.27)  mas / a
Physical Properties
radius (2.8 ± 0.4)  R ☉
Effective temperature (12800 ± 300)  K.
Other names
and catalog entries
Flamsteed name 56 Arietis
Bonn survey BD + 26 ° 523
Bright Star Catalog HR 954 [1]
Henry Draper Catalog HD 19832 [2]
Hipparcos catalog HIP 14893 [3]
SAO catalog SAO 75788 [4]
Tycho catalog TYC 1791-1519-1 [5]Template: Infobox star / maintenance / specification of the TYC catalog
2MASS catalog 2MASS J03121424 + 2715250 [6]

SX Arietis is a spectral class B star at a distance of about 400  light years . It is the prototype of the SX Arietis stars , which belong to the rotation-variable stars . Furthermore, the star is one of the chemically peculiar Bp stars .

Web links

Individual evidence

  1. ↑ a b c d e f g 56 Ari. In: SIMBAD . Center de Données astronomiques de Strasbourg , accessed September 8, 2018 .
  2. ↑ a b c SX Ari. In: VSX. AAVSO, accessed September 8, 2018 .
  3. ↑ a b D. Shulyak et al .: The Lorentz force in atmospheres of chemically peculiar stars: 56 Arietis . In: Astronomy & Astrophysics . 509, Jan 2010, p. A28. bibcode : 2010A & A ... 509A..28S . doi : 10.1051 / 0004-6361 / 200912615 .