Iota Lupi

Iota Lupi
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Lupus
Right ascension 14h 19m 24.22s[1]
Declination −46° 03 29.1[1]
Apparent magnitude (V) 3.54[2]
Spectral typeB2.5IV[2]

Iota Lupi is a star in the constellation Lupus. Located around 104 parsecs (340 ly) distant,[1] it is a blue subgiant of spectral type B2.5IV,[2] a star that has used up its core hydrogen and has begun to expand off the main-sequence. It is around 6.8 times as massive and 2082 times as luminous as the Sun, with a surface temperature of 19525 K.[3] Classified as a Beta Cephei variable, it varies between magnitudes 3.54 and 3.55.[4]

References

  1. 1 2 3 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 "Iota Lupi". SIMBAD Astronomical Database. Centre de Données astronomiques de Strasbourg. Retrieved 14 July 2015.
  3. 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
  4. European Space Agency (1997). The HIPPARCOS and TYCHO catalogues. Astrometric and photometric star catalogues derived from the ESA HIPPARCOS Space Astrometry Mission. 1200. Netherlands: Noordwijk. Bibcode:1997ESASP1200.....E. ISBN 9290923997.


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