PT Puppis

PT Puppis
Observation data
Epoch J2000      Equinox J2000
Constellation Puppis
Right ascension 07h 36m 41.03388s[1]
Declination 19° 42 08.4211[1]
Characteristics
Spectral type B2 II
Variable type Beta Cephei
Astrometry
Radial velocity (Rv)+22.00 ± 4.3 km/s
Proper motion (μ) RA: 7.86 ± 0.21[1] mas/yr
Dec.: 5.81 ± 0.20[1] mas/yr
Parallax (π)1.93 ± 0.28[1] mas
Distanceapprox. 1,700 ly
(approx. 520 pc)
Details
Mass7.94[2] M
Luminosity6405[2] L
Temperature19400[2] K
Other designations
PT Puppis, v2 Puppis, HR 2928, HD 61068, HIP 37036, SAO 153149
Database references
SIMBADdata

PT Puppis (PT Pup) is a star in the constellation Puppis. Anamarija Stankov confirmed this star as a Beta Cephei variable.[3] Analysis of its spectrum and allowing for extinction gives a mass 7.94 times that of the Sun, a surface temperature of 19,400 K and luminosity of 6405 Suns.[2]

References

  1. 1 2 3 4 5 van Leeuwen, F. (November 2007), "Validation of the new Hipparcos reduction", Astronomy and Astrophysics, 474 (2): 653–664, arXiv:0708.1752Freely accessible, Bibcode:2007A&A...474..653V, doi:10.1051/0004-6361:20078357
  2. 1 2 3 4 Hohle, M. M.; Neuhäuser, R.; Schutz, B. F. (April 2010), "Masses and luminosities of O- and B-type stars and red supergiants", Astronomische Nachrichten, 331 (4): 349, arXiv:1003.2335Freely accessible, Bibcode:2010AN....331..349H, doi:10.1002/asna.200911355
  3. Stankov, Anamarija; Handler, Gerald (2005). "Catalog of Galactic β Cephei Stars". The Astrophysical Journal Supplement Series. 158 (2): 193–216. arXiv:astro-ph/0506495Freely accessible. Bibcode:2005ApJS..158..193S. doi:10.1086/429408. ISSN 0067-0049.
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