71 Ophiuchi

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71 Ophiuchi
Ophiuchus constellation map.svg
Red circle.svg

Location of 71 Ophiuchi (circled)
Observation data
Epoch J2000      Equinox J2000
Constellation Ophiuchus
Right ascension 18h 07m 18.35921s[1]
Declination 8° 44′ 01.9156″[1]
Apparent magnitude (V) 4.64[2]
Characteristics
Spectral type G8III[3]
U−B color index +0.73[4]
B−V color index +0.97[4]
Astrometry
Radial velocity (Rv) -3.00[5] km/s
Proper motion (μ) RA: +8.28[1] mas/yr
Dec.: +29.45[1] mas/yr
Parallax (π) 11.96 ± 0.28[1] mas
Distance 273 ± 6 ly
(84 ± 2 pc)
Absolute magnitude (MV) 0.03[2]
Details
Mass 2.64[6] M
Radius 14.25[6] R
Luminosity 105[6] L
Surface gravity (log g) 2.57[6] cgs
Temperature 4,895[6] K
Metallicity [Fe/H] -0.04[6] dex
Rotational velocity (v sin i) 2.2[7] km/s
Other designations
BD+08°3582, GC 24693, HIP 88765, HR 6770, HD 165760, SAO 123140
Database references
SIMBAD data

71 Ophiuchi is a class G8III[3] (yellow giant) star in the constellation Ophiuchus. Its apparent magnitude is 4.64[2] and it is approximately 273 light years away based on parallax.[1]

References[edit]

  1. ^ a b c d e f Van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653. arXiv:0708.1752Freely accessible. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357.  Vizier catalog entry
  2. ^ a b c Anderson, E.; Francis, Ch. (2012). "XHIP: An extended hipparcos compilation". Astronomy Letters. 38 (5): 331. arXiv:1108.4971Freely accessible. Bibcode:2012AstL...38..331A. doi:10.1134/S1063773712050015.  Vizier catalog entry
  3. ^ 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. 
  4. ^ a b Mallama, A. (2014). "Sloan Magnitudes for the Brightest Stars". The Journal of the American Association of Variable Star Observers. 42: 443. Bibcode:2014JAVSO..42..443M. Vizier catalog entry
  5. ^ Jofré, E.; Petrucci, R.; Saffe, C.; Saker, L.; Artur de la Villarmois, E.; Chavero, C.; Gómez, M.; Mauas, P. J. D. (2015). "Stellar parameters and chemical abundances of 223 evolved stars with and without planets". Astronomy & Astrophysics. 574: A50. arXiv:1410.6422Freely accessible. Bibcode:2015A&A...574A..50J. doi:10.1051/0004-6361/201424474.  Vizier catalog entry
  6. ^ 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:1412.4634Freely accessible. Bibcode:2015A&A...574A.116R. doi:10.1051/0004-6361/201322360.  Vizier catalog entry
  7. ^ 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. Bibcode:1999A&AS..139..433D. doi:10.1051/aas:1999401.  Vizier catalog entry