Sigma Serpentis
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Serpens |
| Right ascension | Template:RA[1] |
| Declination | Template:DEC[1] |
| Apparent magnitude (V) | +4.82[2] |
| Characteristics | |
| Spectral type | F3 V[3] |
| U−B Template:Engvar | +0.025[2] |
| B−V Template:Engvar | +0.338[2] |
| Astrometry | |
| Radial velocity (Rv) | Script error: No such module "val".[4] km/s |
| Proper motion (μ) | RA: −158.40[1] mas/yr Dec.: +49.56[1] mas/yr |
| Parallax (π) | 36.67±0.33 mas[1] |
| Distance | Template:Rnd ± Template:Rnd ly (Template:Rnd ± Template:Rnd pc) |
| Absolute magnitude (MV) | +2.63[5] |
| Details | |
| Mass | Script error: No such module "val".[6] Template:Solar mass |
| Luminosity | 7.7[6] Template:Solar luminosity |
| Surface gravity (log g) | 4.05[5] cgs |
| Temperature | 6,952[7] K |
| Metallicity [Fe/H] | −0.01[7] dex |
| Rotational velocity (v sin i) | 77.7[5] km/s |
| Age | Script error: No such module "val".[7] Gyr |
| Metallicity [Fe/H] | {{{metal_fe2}}} dex |
| Other designations | |
| Template:Odlist[8] | |
| Database references | |
| SIMBAD | data |
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Sigma Serpentis, Latinized from σ Serpentis, is a star in the equatorial constellation Serpens. It is faintly visible to the naked eye with an apparent visual magnitude of +4.82.[2] Based upon an annual parallax shift of 36.67 mas as seen from Earth, it is located 89 light years from the Sun. The star is moving closer to the Sun with a radial velocity of −49 km/s.[4]
Barry (1970) assigned this star a stellar classification of F3 V,[3] indicating an ordinary F-type main-sequence star. It is about one billion[7] years old and is spinning with a projected rotational velocity of 77.7 km/s.[5] The star has an estimated 1.58[6] times the mass of the Sun and is radiating 7.7[6] times the Sun's luminosity from its photosphere at an effective temperature of 6,952 K.[7]
References
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- ↑ a b c d Script error: No such module "citation/CS1".
- ↑ a b Script error: No such module "citation/CS1".
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- ↑ a b c d Script error: No such module "citation/CS1".
- ↑ a b c d Script error: No such module "citation/CS1".
- ↑ a b c d e Script error: No such module "citation/CS1".
- ↑ Template:Cite simbad
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