Nu Pavonis

Not to be confused with NU Pavonis.
ν Pavonis


Location of ν Pavonis (circled)

Observation data
Epoch J2000      Equinox J2000
Constellation Pavo
Right ascension 18h 31m 22.42509s[1]
Declination −62° 16′ 41.8853″[1]
Apparent magnitude (V) 4.64[2] (4.60 - 4.64[3])
Characteristics
Spectral type B7III[4]
U−B color index -0.39[2]
B−V color index -0.11[2]
Variable type SPB[3]
Astrometry
Radial velocity (Rv)+16.95[5] km/s
Proper motion (μ) RA: -1.11[1] mas/yr
Dec.: -45.31[1] mas/yr
Parallax (π)7.43 ± 0.24[1] mas
Distance440 ± 10 ly
(135 ± 4 pc)
Absolute magnitude (MV)-1.01[4]
Details
Mass4.39[6] M☉
Luminosity659[6] L☉
Temperature12,764[6] K
Rotational velocity (v sin i)125.0[7] km/s
Other designations
GC 25227, HIP 90797, HR 6916, HD 169978, SAO 254273, WDS J18314-6217AB
Database references
SIMBADdata

Nu Pavonis (ν Pav) is a slowly pulsating B-type star of class B7III[4] (blue giant) in the constellation Pavo. Its apparent magnitude varies from 4.60 to 4.64 over a period of 0.85584 days[3] and it is approximately 439 light years away based on parallax.[1] It has one reported companion, probably a pre-main-sequence star, at magnitude 13.7 and separation 3.1", estimated at 0.15 solar masses and an effective temperature of 3,192 K.[6]

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:0708.1752Freely accessible. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357. Vizier catalog entry
  2. 1 2 3 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.
  3. 1 2 3 Watson, C. L. (2006). "The International Variable Star Index (VSX)". The Society for Astronomical Sciences 25th Annual Symposium on Telescope Science. Held May 23-25. 25: 47. Bibcode:2006SASS...25...47W.
  4. 1 2 3 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
  5. ↑ Pourbaix, D.; Tokovinin, A. A.; Batten, A. H.; Fekel, F. C.; Hartkopf, W. I.; Levato, H.; Morrell, N. I.; Torres, G.; Udry, S. (2004). "SB9: The ninth catalogue of spectroscopic binary orbits". Astronomy and Astrophysics. 424 (2): 727. arXiv:astro-ph/0406573Freely accessible. Bibcode:2004A&A...424..727P. doi:10.1051/0004-6361:20041213.
  6. 1 2 3 4 Hubrig, S.; Le Mignant, D.; North, P.; Krautter, J. (2001). "Search for low-mass PMS companions around X-ray selected late B stars". Astronomy and Astrophysics. 372: 152. arXiv:astro-ph/0103201Freely accessible. Bibcode:2001A&A...372..152H. doi:10.1051/0004-6361:20010452.
  7. ↑ Glebocki, R.; Gnacinski, P. (2005). "VizieR Online Data Catalog: Catalog of Stellar Rotational Velocities (Glebocki+ 2005)". VizieR On-line Data Catalog: III/244. Originally published in: 2005csss...13..571G; 2005yCat.3244....0G. 3244. Bibcode:2005yCat.3244....0G. Vizier catalog entry
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