HD 165634
  | |
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Sagittarius |
| Right ascension | 18h 08m 04.97982s[1] |
| Declination | −28° 27′ 25.5316″[1] |
| Apparent magnitude (V) | 4.56[2] |
| Characteristics | |
| Spectral type | G7:IIIb*[3] |
| U−B color index | +0.75[2] |
| B−V color index | +0.95[2] |
| Astrometry | |
| Radial velocity (Rv) | -4.87[4] km/s |
| Proper motion (μ) | RA: +25.43[1] mas/yr Dec.: -31.18[1] mas/yr |
| Parallax (π) | 9.62 ± 0.26 mas[1] |
| Distance | 339 ± 9 ly (104 ± 3 pc) |
| Absolute magnitude (MV) | -0.53[5] |
| Details | |
| Mass | 3.38[6] M☉ |
| Radius | 16.98[6] R☉ |
| Luminosity | 168[6] L☉ |
| Surface gravity (log g) | 2.51[6] cgs |
| Temperature | 5,043[6] K |
| Metallicity [Fe/H] | -0.05[6] dex |
| Rotational velocity (v sin i) | 2.6[7] km/s |
| Other designations | |
| Database references | |
| SIMBAD | data |
HD 165634 is a class G7III[3] (yellow giant) star in the constellation Sagittarius. Its apparent magnitude is 4.56[2] and it is approximately 339 light years away based on parallax.[1]
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.
- ^ Nidever, David L.; Marcy, Geoffrey W.; Butler, R. Paul; Fischer, Debra A.; Vogt, Steven S. (2002). "Radial Velocities for 889 Late-Type Stars". The Astrophysical Journal Supplement Series. 141 (2): 503. arXiv:astro-ph/0112477. Bibcode:2002ApJS..141..503N. doi:10.1086/340570.
- ^ 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 d e f Reffert, Sabine; Bergmann, Christoph; Quirrenbach, Andreas; Trifonov, Trifon; Künstler, Andreas (2015). "Precise radial velocities of giant stars". Astronomy & Astrophysics. 574: A116. arXiv:1412.4634. Bibcode:2015A&A...574A.116R. doi:10.1051/0004-6361/201322360. hdl:10722/215277. 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
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