Epsilon Pavonis

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ε Pavonis
Pavo constellation map.svg
Red circle.svg

Location of ε Pavonis (circled)
Observation data
Epoch J2000      Equinox J2000
Constellation Pavo
Right ascension 20h 00m 35.55558s[1]
Declination −72° 54′ 37.8198″[1]
Apparent magnitude (V) 3.97[2]
Spectral type A0Va[2]
U−B color index -0.05[3]
B−V color index -0.03[2]
Radial velocity (Rv) -6.70[4] km/s
Proper motion (μ) RA: +81.78[1] mas/yr
Dec.: -132.16[1] mas/yr
Parallax (π) 31.04 ± 0.17[1] mas
Distance 105.1 ± 0.6 ly
(32.2 ± 0.2 pc)
Absolute magnitude (MV) 1.43[2]
Mass 2.2[5] M
Radius 1.74[6] R
Luminosity 32[7] L
Surface gravity (log g) 4.32±0.02[6] cgs
Temperature 10,440[8] K
Rotational velocity (v sin i) 85[7] km/s
Age 27[6] Myr
Other designations
ε Pav, CPD−73° 2086, FK5 748, GC 27631, HD 188228, HIP 98495, HR 7590, SAO 257757
Database references

Epsilon Pavonis (ε Pav) is a class A0V[2] (white main-sequence) star in the constellation Pavo. Its apparent magnitude is 3.97[2] and it is approximately 105.1 light years away based on parallax.[1]


  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 d e f 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. ^ 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
  4. ^ Gontcharov, G. A. (2006). "Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system". Astronomy Letters. 32 (11): 759. arXiv:1606.08053Freely accessible. Bibcode:2006AstL...32..759G. doi:10.1134/S1063773706110065. 
  5. ^ Tetzlaff, N.; Neuhäuser, R.; Hohle, M. M. (2011). "A catalogue of young runaway Hipparcos stars within 3 kpc from the Sun". Monthly Notices of the Royal Astronomical Society. 410: 190. arXiv:1007.4883Freely accessible. Bibcode:2011MNRAS.410..190T. doi:10.1111/j.1365-2966.2010.17434.x.  Vizier catalog entry
  6. ^ a b c Gerbaldi, M.; et al. (June 1999), "Search for reference A0 dwarf stars: Masses and luminosities revisited with HIPPARCOS parallaxes", Astronomy and Astrophysics Supplement, 137 (2): 273–292, Bibcode:1999A&AS..137..273G, doi:10.1051/aas:1999248. 
  7. ^ a b Zorec, J.; Royer, F. (2012). "Rotational velocities of A-type stars". Astronomy & Astrophysics. 537: A120. arXiv:1201.2052Freely accessible. Bibcode:2012A&A...537A.120Z. doi:10.1051/0004-6361/201117691.  Vizier catalog entry
  8. ^ David, Trevor J.; Hillenbrand, Lynne A. (2015). "The Ages of Early-Type Stars: Strömgren Photometric Methods Calibrated, Validated, Tested, and Applied to Hosts and Prospective Hosts of Directly Imaged Exoplanets". The Astrophysical Journal. 804 (2): 146. arXiv:1501.03154Freely accessible. Bibcode:2015ApJ...804..146D. doi:10.1088/0004-637X/804/2/146.  Vizier catalog entry