HD 59612
HD 59612 is a class A5Ib supergiant star in the constellation Puppis. Its apparent magnitude is 4.86[2] and it is approximately 3,100 light years away based on parallax.[1]
  | |
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Puppis |
| Right ascension | 07h 29m 51.41199s[1] |
| Declination | −23° 01′ 27.4317″[1] |
| Apparent magnitude (V) | 4.86[2] |
| Characteristics | |
| Spectral type | A5 Ib[3] |
| U−B color index | +0.17[2] |
| B−V color index | +0.24[2] |
| Astrometry | |
| Radial velocity (Rv) | 35.00[4] km/s |
| Proper motion (μ) | RA: −3.42[1] mas/yr Dec.: 5.20[1] mas/yr |
| Parallax (π) | 1.05 ± 0.28[1] mas |
| Distance | approx. 3,100 ly (approx. 1,000 pc) |
| Absolute magnitude (MV) | −5.10[5] |
| Details | |
| Mass | 12.9[3] M☉ |
| Radius | 44[5] R☉ |
| Luminosity | 10,864[5] L☉ |
| Surface gravity (log g) | 1.78[3] cgs |
| Temperature | 8,620[3] K |
| Metallicity [Fe/H] | +0.02[6] dex |
| Rotational velocity (v sin i) | 27[5] km/s |
| Age | 15[3] Myr |
| Other designations | |
| Database references | |
| SIMBAD | data |
It has one companion, B, at magnitude 10.7 and separation 3.0".[7]
References
- Van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653. arXiv:0708.1752. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357.
- Ducati, J. R. (2002). "VizieR Online Data Catalog: Catalogue of Stellar Photometry in Johnson's 11-color system". CDS/ADC Collection of Electronic Catalogues. 2237. Bibcode:2002yCat.2237....0D.
- Lyubimkov, Leonid S.; Lambert, David L.; Korotin, Sergey A.; Poklad, Dmitry B.; Rachkovskaya, Tamara M.; Rostopchin, Sergey I. (2011). "Nitrogen enrichment in atmospheres of A- and F-type supergiants". Monthly Notices of the Royal Astronomical Society. 410: 1774. arXiv:1009.0054. Bibcode:2011MNRAS.410.1774L. doi:10.1111/j.1365-2966.2010.17560.x.
- Gontcharov, G. A. (2006). "Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system". Astronomy Letters. 32 (11): 759. arXiv:1606.08053. Bibcode:2006AstL...32..759G. doi:10.1134/S1063773706110065.
- Verdugo, E.; Talavera, A.; Gómez De Castro, A. I. (1999). "Understanding A-type supergiants. II. Atmospheric parameters and rotational velocities of Galactic A-type supergiants". Astronomy and Astrophysics. 346: 819. Bibcode:1999A&A...346..819V.
- Gray, R. O.; Graham, P. W.; Hoyt, S. R. (2001). "The Physical Basis of Luminosity Classification in the Late A-, F-, and Early G-Type Stars. II. Basic Parameters of Program Stars and the Role of Microturbulence". The Astronomical Journal. 121 (4): 2159. Bibcode:2001AJ....121.2159G. doi:10.1086/319957.
- Mason, Brian D.; Wycoff, Gary L.; Hartkopf, William I.; Douglass, Geoffrey G.; Worley, Charles E. (2001). "The 2001 US Naval Observatory Double Star CD-ROM. I. The Washington Double Star Catalog". The Astronomical Journal. 122 (6): 3466. Bibcode:2001AJ....122.3466M. doi:10.1086/323920. Vizier catalog entry
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