BW Vulpeculae

BW Vulpeculae
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Vulpecula
Right ascension 20h 54m 22.39523s[1]
Declination +28° 31 19.1925[1]
Apparent magnitude (V) 6.44 - 6.68
Characteristics
Spectral type B2IIIv
Variable type Beta Cephei variable
Astrometry
Proper motion (μ) RA: 1.42 ± 0.30[1] mas/yr
Dec.: 5.11 ± 0.30[1] mas/yr
Parallax (π)3.12 ± 0.40[1] mas
Distanceapprox. 1,000 ly
(approx. 320 pc)
Other designations
BW Vulpeculae, HD 199140, HIP 103191, HR 8007, SAO 89265[2]

BW Vulpeculae is a star in the constellation Vulpecula. It varies between magnitudes 6.44 and 6.68 over a period of 4.8 hours.[3]


References

  1. 1 2 3 4 5 van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics 474 (2): 653–664. arXiv:0708.1752. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357.Vizier catalog entry
  2. "BW Vulpeculae -- Variable Star of beta Cephei type". SIMBAD Astronomical Database. Centre de données astronomiques de Strasbourg. Retrieved 2 August 2015.
  3. Otero, Sebastian Alberto (21 November 2011). "BW Vulpeculae". AAVSO Website. American Association of Variable Star Observers. Retrieved 2 August 2015.


This article is issued from Wikipedia - version of the Wednesday, January 20, 2016. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.