| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Sagittarius |
| Right ascension | 20 04 19.59387 |
| Declination | −32° 03′ 22.6729″ |
| Apparent magnitude (V) | 4.99 |
| Characteristics | |
| Spectral type | K1III |
| U−B color index | +1.18 |
| B−V color index | +1.21 |
| Variable type | suspected |
| Astrometry | |
| Radial velocity (Rv) | -11.80 km/s |
| Proper motion (μ) | RA: +45.07 mas/yr Dec.: -11.74 mas/yr |
| Parallax (π) | 11.22 ± 0.25 mas |
| Distance | 291 ± 6 ly (89 ± 2 pc) |
| Absolute magnitude (MV) | 0.24 |
| Details | |
| Mass | 1.48 M☉ |
| Radius | 19 R☉ |
| Luminosity | 121 L☉ |
| Surface gravity (log g) | 2.05 cgs |
| Temperature | 4,467 K |
| Metallicity | -0.53 dex |
| Rotational velocity (v sin i) | < 1.0 km/s |
| Other designations | |
| CD-32°15682, CCDM J20043-3203A, FK5 3606, GC 27811, HIP 98842, HR 7659, HD 190056, NSV 12746, SAO 211782, WDS J20043-3203A | |
| Database references | |
| SIMBAD | data |
HD 190056 is a class K1III (orange giant) star in the constellation Sagittarius. Its apparent magnitude is 4.99 and it is approximately 291 light years away based on parallax.
It is a suspected variable, and the primary has one companion, B, with magnitude 12.7 and separation 54.4".
References
- ^ Van Leeuwen, F. (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. S2CID 18759600. Vizier catalog entry
- ^ 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.
- ^ 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
- ^ Samus, N. N.; Durlevich, O. V.; et al. (2009). "VizieR Online Data Catalog: General Catalogue of Variable Stars (Samus+ 2007-2013)". VizieR On-line Data Catalog: B/GCVS. Originally Published in: 2009yCat....102025S. 1. Bibcode:2009yCat....102025S.
- Wilson, R. E. (1953). "General Catalogue of Stellar Radial Velocities". Carnegie Institution for Science. Bibcode:1953GCRV..C......0W. LCCN 54001336.
{{cite journal}}: Cite journal requires|journal=(help) - ^ 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: 555–562. arXiv:astro-ph/9911002. Bibcode:1999A&A...352..555A. 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. S2CID 54046583. 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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