Eta Pavonis

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η Pavonis
Pavo constellation map.svg
Red circle.svg

Location of η Pavonis (circled)
Observation data
Epoch J2000      Equinox J2000
Constellation Pavo
Right ascension 17h 45m 43.98605s[1]
Declination −64° 43′ 25.9394″[1]
Apparent magnitude (V) 3.61[2]
Characteristics
Spectral type K2II[3]
U−B color index +1.17[4]
B−V color index +1.19[4]
Astrometry
Radial velocity (Rv) -7.60[5] km/s
Proper motion (μ) RA: -11.96[1] mas/yr
Dec.: -56.57[1] mas/yr
Parallax (π) 9.26 ± 0.18[1] mas
Distance 352 ± 7 ly
(108 ± 2 pc)
Absolute magnitude (MV) -1.56[2]
Details
Luminosity 603[2] L
Surface gravity (log g) 1.97[6] cgs
Temperature 4,700[7] K
Metallicity [Fe/H] +0.15[6] dex
Rotational velocity (v sin i) < 1.5[8] km/s
Other designations
FK5 661, GC 24044, HIP 86929, HR 6582, HD 160635, SAO 254020
Database references
SIMBAD data

Eta Pavonis (η Pav) is a star in the constellation Pavo. Its apparent magnitude is 3.61.[2] Located around 108 parsecs (350 ly) distant,[1] it is a bright giant of spectral type K2II,[3] between the classifications of giant and supergiant.

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. Bibcode:2007A&A...474..653V. arXiv:0708.1752Freely accessible. doi:10.1051/0004-6361:20078357.  Vizier catalog entry
  2. ^ a b c d Anderson, E.; Francis, Ch. (2012). "XHIP: An extended hipparcos compilation". Astronomy Letters. 38 (5): 331. Bibcode:2012AstL...38..331A. arXiv:1108.4971Freely accessible. doi:10.1134/S1063773712050015.  Vizier catalog entry
  3. ^ a b Houk, N.; Cowley, A. P. (1975). "University of Michigan Catalogue of two-dimensional spectral types for the HD stars. Volume I. Declinations -90_ to -53_ƒ0". University of Michigan Catalogue of two-dimensional spectral types for the HD stars. Volume I. Declinations -90_ to -53_ƒ0. Department of Astronomy, University of Michigan: 19 + 452. Bibcode:1975mcts.book.....H. 
  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. ^ Gontcharov, G. A. (2006). "Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system". Astronomy Letters. 32 (11): 759. Bibcode:2006AstL...32..759G. doi:10.1134/S1063773706110065. 
  6. ^ a b Luck, R. Earle (2014). "Parameters and Abundances in Luminous Stars". The Astronomical Journal. 147 (6): 137. Bibcode:2014AJ....147..137L. doi:10.1088/0004-6256/147/6/137. 
  7. ^ McDonald, I.; Zijlstra, A. A.; Boyer, M. L. (2012). "Fundamental parameters and infrared excesses of Hipparcos stars". Monthly Notices of the Royal Astronomical Society. 427: 343. doi:10.1111/j.1365-2966.2012.21873.x.  Vizier catalog entry
  8. ^ 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. Bibcode:2014A&A...561A.126D. arXiv:1312.3474Freely accessible. doi:10.1051/0004-6361/201220762.  Vizier catalog entry