Xi Pavonis

ξ Pavonis
Location of ξ Pavonis (circled)
Observation data
Epoch J2000      Equinox J2000
Constellation Pavo
Right ascension 18h 23m 13.62473s[1]
Declination −61° 29′ 38.0773″[1]
Apparent magnitude (V) 4.35[2]
Characteristics
Spectral type K4III[2]
U−B color index +1.55[3]
B−V color index +1.46[2]
Astrometry
Radial velocity (Rv)+12.20[4] km/s
Proper motion (μ) RA: +3.17[1] mas/yr
Dec.: −2.21[1] mas/yr
Parallax (π)6.96 ± 1.03[1] mas
Distanceapprox. 470 ly
(approx. 140 pc)
Absolute magnitude (MV)−1.16[2]
Orbit[5]
Period (P)2,214 d
Eccentricity (e)0.26
Periastron epoch (T)2418076.2 JD
Argument of periastron (ω)
(secondary)		187.2°
Semi-amplitude (K1)
(primary)		17.9 km/s
Details
Luminosity650[2] L☉
Temperature4,200[6] K
Other designations
ξ Pav, CPD−61° 6140, FK5 686, GC 25045, HD 168339, HIP 90098, HR 6855, SAO 254226, CCDM J18232-6130AB, WDS J18232-6130AB
Database references
SIMBADdata

Xi Pavonis (ξ Pavonis) is a class K4III[2] (orange giant) star in the constellation of Pavo. Its apparent magnitude is 4.35[2] and it is approximately 470 light years away based on parallax.[1] Xi Pavonis is the double star GLE 2AB, whose companion's magnitude is 8.6 about 3.3" separation, which was discovered by Australian amateur astronomer, Walter Gale in 1894. In addition, the primary is spectroscopic binary GLE 2Aa, with a 6.06 year period.[7][8]

References

  1. 1 2 3 4 5 6 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
  2. 1 2 3 4 5 6 7 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
  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. ↑ Wilson, R. E. (1953). General Catalogue of Stellar Radial Velocities. Carnegie Institution of Washington. Bibcode:1953GCRV..C......0W. LCCN 54001336.
  5. ↑ Pourbaix, D.; et al. (2004), "SB9: The Ninth Catalogue of Spectroscopic Binary Orbits", Astronomy & Astrophysics, 424: 727–732, arXiv:astro-ph/0406573, Bibcode:2009yCat....102020P, doi:10.1051/0004-6361:20041213.
  6. ↑ 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. arXiv:1208.2037. Bibcode:2012MNRAS.427..343M. doi:10.1111/j.1365-2966.2012.21873.x. Vizier catalog entry
  7. ↑ Dommanget, J.; Nys, O. (2002). "VizieR Online Data Catalog: CCDM (Catalog of Components of Double & Multiple stars) (Dommanget+ 2002)". VizieR On-line Data Catalog: I/274. Originally published in: Observations et Travaux 54. 1274. Bibcode:2002yCat.1274....0D. Vizier catalog entry
  8. ↑ Malkov, O. Yu.; Tamazian, V. S.; Docobo, J. A.; Chulkov, D. A. (2012). "Dynamical masses of a selected sample of orbital binaries". Astronomy & Astrophysics. 546: A69. Bibcode:2012A&A...546A..69M. doi:10.1051/0004-6361/201219774. Vizier catalog entry
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