Omicron Serpentis

Omicron Serpentis
Observation data
Epoch J2000      Equinox J2000
Constellation Serpens
Right ascension 17h 41m 24.87286s [1]
Declination −12° 52′ 31.1086″ [1]
Apparent magnitude (V) 4.24 [2]
Characteristics
Spectral type A2Va [3]
B−V color index +0.09 [2]
Astrometry
Radial velocity (Rv)-30.20[4] km/s
Proper motion (μ) RA: -72.90[1] mas/yr
Dec.: -55.55[1] mas/yr
Parallax (π)18.83 ± 0.25[1] mas
Distance173 ± 2 ly
(53.1 ± 0.7 pc)
Absolute magnitude (MV)0.62 [5]
Other designations
56 Serpentis, FK5 3405, GC 23978, HIP 86565, HR 6581, HD 160613, SAO 160747 [2]
Database references
SIMBADdata

Omicron Serpentis (ο Ser, ο Serpentis) is a star in the constellation Serpens.

Omicron Serpentis is a white A-type main sequence dwarf with an apparent magnitude of +4.24. It is approximately 173 light years from Earth.[1] It is classified as a Delta Scuti type variable star and its apparent magnitude varies by 0.01 with a period of 76 minutes.[6]

References

  1. 1 2 3 4 5 6 van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics 474 (2): 653–664. arXiv:0708.1752. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357. Vizier catalog entry
  2. 1 2 3 "Omicron Serpentis". SIMBAD Astronomical Database. Retrieved 2015-10-17.
  3. ↑ Houk, N. (1988), Michigan catalogue of two-dimensional spectral types for the HD stars 4, Ann Arbor: Dept. of Astronomy, University of Michigan, Bibcode:1988MSS...C04....0H
  4. ↑ Gontcharov, G. A. (November 2006). "Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system". Astronomy Letters 32 (11): 759–771. Bibcode:2006AstL...32..759G. doi:10.1134/S1063773706110065.
  5. ↑ Absolute magnitude calculated as M = m + 5 (1 + \log_{10}{p})\!\,, where M is the star's absolute magnitude, m is the star's apparent magnitude, and p is the star's measured parallax in arcseconds.
  6. ↑ Chang, S.-W.; Protopapas, P.; Kim, D.-W.; Byun, Y.-I. (2013). "Statistical Properties of Galactic δ Scuti Stars: Revisited". The Astronomical Journal 145 (5). Bibcode:2013AJ....145..132C. doi:10.1088/0004-6256/145/5/132. Vizier catalog entry


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