Tau5 Serpentis

Tau5 Serpentis, Latinized from τ5 Serpentis, is a F-type main sequence star in the constellation of Serpens, approximately 160 light-years from Earth.[1] It has an apparent visual magnitude of approximately 5.938.[1][5]

τ5 Serpentis
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Serpens
Right ascension 15h 36m 29.2391s[1]
Declination +16° 07 08.705[1]
Apparent magnitude (V) 5.938[1]
Characteristics
Spectral type F3V[1]
U−B color index +0.04[2]
B−V color index +0.29[2]
Astrometry
Radial velocity (Rv)−2 ± 5[1] km/s
Proper motion (μ) RA: 71.54[1] mas/yr
Dec.: −5.54[1] mas/yr
Parallax (π)20.40 ± 0.81[1] mas
Distance160 ± 6 ly
(49 ± 2 pc)
Absolute magnitude (MV)+2.35[3]
Details
Mass1.52
(1.47 to 1.58)[4] M
Luminosity10[3] L
Temperature6,900[4] K
Metallicity [Fe/H]−0.20[4] dex
Age1.6±0.1[4] Gyr
Other designations
τ5 Ser, 18 Serpentis, BD+16° 2807, GC 20985, HD 139225, HIP 76424, HR 5804, SAO 101642, PPM 131544[1]
Database references
SIMBADdata

References

  1. * 18 Ser -- Star, database entry, SIMBAD. Accessed on line September 19, 2008.
  2. HR 5804, database entry, The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version), D. Hoffleit and W. H. Warren, Jr., CDS ID V/50. Accessed on line September 19, 2008.
  3. 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.
  4. HD 139225, database entry, Geneva-Copenhagen Survey of the Solar neighbourhood, J. Holmberg et al., 2007, CDS ID V/117A. Accessed on line November 19, 2008.
  5. "Tau5 Serpentis (18 Serpentis) Star Facts on Universe Guide".


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