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]

For other stars with this Bayer designation, see Tau Serpentis.

τ⁵ Serpentis

Observation data Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation	Serpens
Right ascension	15^h 36^m 29.2391^s[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
τ^5 Ser, 18 Serpentis, BD+16° 2807, GC 20985, HD 139225, HIP 76424, HR 5804, SAO 101642, PPM 131544[1]
Database references
SIMBAD	data

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.