H Scorpii

H Scorpii (H Sco) is a star in the constellation Scorpius. Its apparent magnitude is 4.18. It was initially given the Bayer designation Beta Normae by Lacaille but later moved from Norma to Scorpius.

H Scorpii
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Scorpius
Right ascension  16h 36m 22.47192s [1]
Declination −35° 15 19.1803 [1]
Apparent magnitude (V) 4.18[1]
Characteristics
Evolutionary stage giant
Spectral type K6III [1]
Astrometry
Radial velocity (Rv)-2.10 ± 0.7[1] km/s
Proper motion (μ) RA: 15.61 ± 0.17[2] mas/yr
Dec.: 11.33 ± 0.14[2] mas/yr
Parallax (π)9.52 ± 0.16[2] mas
Distance343 ± 6 ly
(105 ± 2 pc)
Absolute magnitude (MV)−0.84±0.037[3]
Other designations
H Sco, HR 6166, CD-34° 11112, HD 149447, HIP 81304, SAO 207814
Database references
SIMBADdata

Located around 343 light-years distant, it shines with a luminosity approximately 576 times that of the Sun and has a surface temperature of 4000 K.[4]

References

  1. SIMBAD, HR 6166 (accessed 17 February 2013)
  2. van Leeuwen, F. (2007). "Validation of the New Hipparcos Reduction". Astronomy and Astrophysics. 474 (2): 653–64. arXiv:0708.1752. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357.
  3. Park, Sunkyung; et al. (2013), "Wilson-Bappu Effect: Extended to Surface Gravity", The Astronomical Journal, 146 (4): 73, arXiv:1307.0592, Bibcode:2013AJ....146...73P, doi:10.1088/0004-6256/146/4/73.
  4. 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 (1): 343–57. arXiv:1208.2037. Bibcode:2012MNRAS.427..343M. doi:10.1111/j.1365-2966.2012.21873.x.
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