Tau5 Serpentis
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| Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
|---|---|
| Constellation | Serpens |
| Right ascension | Template:RA[1] |
| Declination | Template:DEC[1] |
| Apparent magnitude (V) | 5.93[2] |
| Characteristics | |
| Spectral type | F3V[3] |
| U−B Template:Engvar | +0.04[4] |
| B−V Template:Engvar | +0.354±0.004[2] |
| Astrometry | |
| Radial velocity (Rv) | −2.0±3.7[5] km/s |
| Proper motion (μ) | RA: 72.175 mas/yr[1] Dec.: −5.217 mas/yr[1] |
| Parallax (π) | 19.2694±0.0392 mas[1] |
| Distance | Template:Rnd ± Template:Rnd ly (Template:Rnd ± Template:Rnd pc) |
| Absolute magnitude (MV) | +2.35[2] |
| Details | |
| Mass | 1.54[5] Template:Solar mass |
| Luminosity | 10[2] Template:Solar luminosity |
| Surface gravity (log g) | 3.96[5] cgs |
| Temperature | 6,903±80[5] K |
| Metallicity [Fe/H] | −0.20[5] dex |
| Rotational velocity (v sin i) | 88±10[6] km/s |
| Age | 1.90[5] Gyr |
| Metallicity [Fe/H] | {{{metal_fe2}}} dex |
| Other designations | |
| Template:Odlist[3] | |
| Database references | |
| SIMBAD | data |
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Tau5 Serpentis, Latinized from τ5 Serpentis, is a star in the constellation of Serpens. The Flamsteed designation for this star is 18 Serpentis.[3] It has an apparent visual magnitude of 5.93,[2] which is bright enough to be dimly visible to the naked eye. The star is located at a distance of 169 light years from the Sun based on parallax measurements.[1]
The stellar classification of this star is F3V,[3] matching an F-type main-sequence star. It has 1.54 times the mass of the Sun[5] and is radiating 10[2] times the Sun's luminosity from its photosphere at an effective temperature of 6,903 K.[5] The star has an estimated age of 1.9 billion years[5] and is spinning with a projected rotational velocity of about 88 km/s.[6] It is metal poor, which means the abundance of iron in the stellar atmosphere is lower than in the Sun.[5]
References
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- ↑ a b c d e Template:Cite Gaia EDR3
- ↑ a b c d e f Script error: No such module "citation/CS1".
- ↑ a b c d Template:Cite simbad
- ↑ 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 c d e f g h i j Script error: No such module "citation/CS1".
- ↑ a b Script error: No such module "citation/CS1".
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