Phi1 Lupi
| Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
|---|---|
| Constellation | Lupus |
| Right ascension | 15h 21m 48.37s[1] |
| Declination | −36° 15′ 41.0″[1] |
| Apparent magnitude (V) | 3.57[2] |
| Spectral type | K5III[3] |
Phi1 Lupi is a star in the constellation Lupus. Its apparent magnitude is 3.57.[2] Located around 84.31 parsecs (275.0 ly) distant,[1] it is a red giant of spectral type K5III,[3] a star that has used up its core hydrogen and has expanded. It is slightly variable, varying by 0.008 magnitudes with a period of 4.82 days.[2]
References
- 1 2 3 van Leeuwen, F. (November 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.
- 1 2 3 Koen, Chris; Eyer, Laurent (March 2002). "New periodic variables from the Hipparcos epoch photometry". Monthly Notices of the Royal Astronomical Society 331 (1): 45–59. arXiv:astro-ph/0112194. Bibcode:2002MNRAS.331...45K. doi:10.1046/j.1365-8711.2002.05150.x.
- 1 2 "Phi1 Lupi". SIMBAD Astronomical Database. Centre de Données astronomiques de Strasbourg. Retrieved 12 July 2015.
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