HD 61772
  | |
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Puppis |
| Right ascension | 07h 40m 23.21044s[1] |
| Declination | −15° 15′ 50.1107″[1] |
| Apparent magnitude (V) | 4.98[2] |
| Characteristics | |
| Spectral type | K3II[3] |
| U−B color index | +1.79[4] |
| B−V color index | +1.56[4] |
| Astrometry | |
| Radial velocity (Rv) | +0.10[5] km/s |
| Proper motion (μ) | RA: −2.171[1] mas/yr Dec.: −27.678[1] mas/yr |
| Parallax (π) | 4.915 ± 0.1044 mas[1] |
| Distance | 660 ± 10 ly (203 ± 4 pc) |
| Absolute magnitude (MV) | -1.65[2] |
| Details | |
| Mass | 1.9[1] M☉ |
| Radius | 61[1] R☉ |
| Luminosity | 1,267[2] L☉ |
| Surface gravity (log g) | 0.99[1] cgs |
| Temperature | 4,018[6] K |
| Metallicity [Fe/H] | −0.13[2] dex |
| Rotational velocity (v sin i) | < 2.2[7] km/s |
| Age | 1.32[1] Gyr |
| Other designations | |
| Database references | |
| SIMBAD | data |
HD 61772 is a bright giant star in the constellation Puppis. Its apparent magnitude is 4.98 and it is approximately 660 light years away based on parallax.
The apparent Flamsteed designation 140 Puppis is actually a shorthand of the Gould designation 140 G. Puppis, unambiguous in this case.[8]
The spectrum of HD 61772 match that of a K3II star, a cool bright giant. It has evolved away from the main sequence after about 1.3 billion years and is now 61 times the size of the Sun. Despite being cooler than the Sun at 4,018 K, it is over a thousand times more luminous.
References
- ^ a b c d e f g h i Vallenari, A.; et al. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674: A1. arXiv:2208.00211. Bibcode:2023A&A...674A...1G. doi:10.1051/0004-6361/202243940. S2CID 244398875. Gaia DR3 record for this source at VizieR.
- ^ a b c d 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. S2CID 119257644. Vizier catalog entry
- ^ 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.
- ^ a b Mermilliod, J. C. (2006). "VizieR Online Data Catalog: Homogeneous Means in the UBV System (Mermilliod 1991)". VizieR On-line Data Catalog: II/168. Originally Published in: Institut d'Astronomie. 2168. Bibcode:2006yCat.2168....0M.Vizier catalog entry
- ^ Gontcharov, G. A. (2006). "Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system". Astronomy Letters. 32 (11): 759–771. arXiv:1606.08053. Bibcode:2006AstL...32..759G. doi:10.1134/S1063773706110065. S2CID 119231169.
- ^ Martínez, M. Isabel Pérez; Schröder, K.-P.; Cuntz, M. (2011). "The basal chromospheric Mg ii h+k flux of evolved stars: Probing the energy dissipation of giant chromospheres". Monthly Notices of the Royal Astronomical Society. 414 (1): 418. arXiv:1102.4832. Bibcode:2011MNRAS.414..418P. doi:10.1111/j.1365-2966.2011.18421.x. S2CID 59268230. Vizier catalog entry
- ^ De Medeiros, J. R.; Mayor, M. (1999). "A catalog of rotational and radial velocities for evolved stars". Astronomy and Astrophysics Supplement Series. 139 (3): 433. arXiv:astro-ph/0608248. Bibcode:1999A&AS..139..433D. doi:10.1051/aas:1999401. Vizier catalog entry
- ^ Gould, Benjamin Apthorp (1878). "Uranometria Argentina : brillantez y posicion de las estrellas fijas, hasta la septima magnitud, comprendidas dentro de cien grados del polo austral : con atlas". Resultados del Observatorio Nacional Argentino. 1. Bibcode:1879RNAO....1.....G.
