19 Puppis
  | |
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Puppis |
| Right ascension | 08h 11m 16.30585s[1] |
| Declination | −12° 55′ 37.1952″[1] |
| Apparent magnitude (V) | 4.72[2] |
| Characteristics | |
| Spectral type | G9III-IIIb[3] |
| U−B color index | +0.76[2] |
| B−V color index | +0.96[2] |
| Astrometry | |
| Radial velocity (Rv) | +36.07[4] km/s |
| Proper motion (μ) | RA: -25.79[1] mas/yr Dec.: +8.09[1] mas/yr |
| Parallax (π) | 18.46 ± 0.21 mas[1] |
| Distance | 177 ± 2 ly (54.2 ± 0.6 pc) |
| Absolute magnitude (MV) | 1.05[5] |
| Details | |
| Mass | 1.05[6] M☉ |
| Radius | 8.9[6] R☉ |
| Luminosity | 43.31[5] L☉ |
| Surface gravity (log g) | 2.56[6] cgs |
| Temperature | 4,750[7] K |
| Metallicity [Fe/H] | +0.06[5] dex |
| Rotational velocity (v sin i) | 2.0[8] km/s |
| Other designations | |
| Database references | |
| SIMBAD | data |
19 Puppis (19 Pup) is a class G9III[3] (yellow giant) star in the constellation Puppis. Its apparent magnitude is 4.72[2] and it is approximately 177 light years away based on parallax.[1]
It is a multiple star system with six reported components. Beside the primary, there are B, at magnitude 11.2 and separation 2.2", C, at magnitude 13.2 and separation 30.7", D, at magnitude 8.9 and separation 57.8", E, at magnitude 9.37 and separation 70.1", and F, at magnitude 10.74 and separation 114.1".[9]
References
- ^ a b c d e f 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. Vizier catalog entry
- ^ a b c d 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.
- ^ a b Hoffleit, D.; Warren, W. H. (1995). "VizieR Online Data Catalog: Bright Star Catalogue, 5th Revised Ed. (Hoffleit+, 1991)". VizieR On-line Data Catalog: V/50. Originally published in: 1964BS....C......0H. 5050. Bibcode:1995yCat.5050....0H.
- ^ Massarotti, Alessandro; Latham, David W.; Stefanik, Robert P.; Fogel, Jeffrey (2008). "Rotational and Radial Velocities for a Sample of 761 Hipparcos Giants and the Role of Binarity". The Astronomical Journal. 135: 209. Bibcode:2008AJ....135..209M. doi:10.1088/0004-6256/135/1/209.
- ^ a b c Anderson, E.; Francis, Ch. (2012). "XHIP: An extended hipparcos compilation". Astronomy Letters. 38 (5): 331. arXiv:1108.4971. Bibcode:2012AstL...38..331A. doi:10.1134/S1063773712050015. Vizier catalog entry
- ^ a b c Allende Prieto, C.; Lambert, D. L. (1999). "Fundamental parameters of nearby stars from the comparison with evolutionary calculations: Masses, radii and effective temperatures". Astronomy and Astrophysics. 352: 555. arXiv:astro-ph/9911002. Bibcode:1999A&A...352..555A. Vizier catalog entry
- ^ Gontcharov, G. A. (2009). "Red giant clump in the Tycho-2 catalogue". Astronomy Letters. 34 (11): 785. arXiv:1607.00619. Bibcode:2008AstL...34..785G. doi:10.1134/S1063773708110078. Vizier catalog entry
- ^ De Medeiros, J. R.; Alves, S.; Udry, S.; Andersen, J.; Nordström, B.; Mayor, M. (2014). "A catalog of rotational and radial velocities for evolved stars". Astronomy & Astrophysics. 561: A126. arXiv:1312.3474. Bibcode:2014A&A...561A.126D. doi:10.1051/0004-6361/201220762. Vizier catalog entry
- ^ 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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