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Tau5 Serpentis 
Summary
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]
| 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 mas[1] |
| 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 | |
| Database references | |
| SIMBAD | data |
References edit
- ^ a b c d e f g h i j k * 18 Ser -- Star, database entry, SIMBAD. Accessed on line September 19, 2008.
- ^ 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.
- ^ a b 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, S2CID 119257644.
- ^ 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.
- ^ "Tau5 Serpentis (18 Serpentis) Star Facts on Universe Guide".