Tau5 Serpentis

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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
Distance 160 ± 6 ly
(49 ± 2 pc)
Absolute magnitude (MV) +2.35[3]
Details
Mass 1.52
(1.47 to 1.58)[4] M
Luminosity 10[3] L
Temperature 6,900[4] K
Metallicity [Fe/H] −0.20[4] dex
Age 1.6±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
SIMBAD data

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]

References[edit]

  1. ^ a b c d e f g h i j k * 18 Ser -- Star, database entry, SIMBAD. Accessed on line September 19, 2008.
  2. ^ a b 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. ^ a b Anderson, E.; Francis, Ch. (2012), "XHIP: An extended hipparcos compilation", Astronomy Letters, 38 (5): 331, Bibcode:2012AstL...38..331A, arXiv:1108.4971Freely accessible, doi:10.1134/S1063773712050015. 
  4. ^ a b c d 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.