Epsilon Sextantis
| Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
|---|---|
| Constellation | Sextans |
| Right ascension | Template:RA[1] |
| Declination | Template:DEC[1] |
| Apparent magnitude (V) | 5.24[2] |
| Characteristics | |
| Spectral type | F0 IV[3] |
| U−B Template:Engvar | +0.09[2] |
| B−V Template:Engvar | +0.32[2] |
| Astrometry | |
| Radial velocity (Rv) | +15.2[4] km/s |
| Proper motion (μ) | RA: −160.57[1] mas/yr Dec.: +2.91[1] mas/yr |
| Parallax (π) | 16.86±0.28 mas[1] |
| Distance | Template:Rnd ± Template:Rnd ly (Template:Rnd ± Template:Rnd pc) |
| Absolute magnitude (MV) | 2.42[5] |
| Details | |
| Mass | 1.94[6] Template:Solar mass |
| Radius | Template:Val[7] Template:Solar radius |
| Luminosity | Template:Val[7] Template:Solar luminosity |
| Surface gravity (log g) | Template:Val[8] cgs |
| Temperature | Template:Val[8] K |
| Metallicity [Fe/H] | Template:Val[8] dex |
| Rotational velocity (v sin i) | Template:Val[5] km/s |
| Age | 1.1[6] Gyr |
| Metallicity [Fe/H] | {{{metal_fe2}}} dex |
| Other designations | |
| Template:Odlist[9] | |
| Database references | |
| SIMBAD | data |
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Epsilon Sextantis, Latinized from ε Sextantis, is a solitary,[10] yellow-white hued star in the equatorial constellation of Sextans. With an apparent visual magnitude of 5.24,[2] it is faintly visible to the naked eye on a dark night. The distance to this star, based upon an annual parallax shift of 16.86 mas,[1] is about 193 light years. It is drifting further away from the Sun with a radial velocity of +15 km/s.[4]
This is an F-type subgiant star with a stellar classification of F0 IV.[3] However, Malaroda (1975) gave a classification of F2 III,[11] which would indicate a more evolved giant star. It is estimated to have nearly double the mass of the Sun[6] with 3.1[7] times the Sun's radius. The star is around 1.1 billion years old and has a projected rotational velocity of 63.5 km/s.[5] It is radiating 23[7] times the luminosity of the Sun from its photosphere at an effective temperature of 7,166 K.[8]
References
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