14 Eridani is a star in the equatorial Eridanus constellation. It has an apparent visual magnitude of 6.143[2] and is moving closer to the Sun with a radial velocity of around −5 km/s.[4] The measured annual parallax shift is 29.26 mas,[1] which provides an estimated distance of about 121 light years. Proper motion studies indicate that this is an astrometric binary.[9][10]
Observation data Epoch J2000 Equinox | |
---|---|
Constellation | Eridanus |
Right ascension | 03h 16m 35.75439s[1] |
Declination | −09° 09′ 16.3318″[1] |
Apparent magnitude (V) | 6.143[2] |
Characteristics | |
Spectral type | F5 V Fe−0.7 CH−0.5[3] |
B−V color index | 0.399[2] |
Astrometry | |
Radial velocity (Rv) | −5.3±2.9[4] km/s |
Proper motion (μ) | RA: +8.057[1] mas/yr Dec.: +22.871[1] mas/yr |
Parallax (π) | 26.9856 ± 0.2356 mas[1] |
Distance | 121 ± 1 ly (37.1 ± 0.3 pc) |
Absolute magnitude (MV) | 3.47[5] |
Details | |
Mass | 1.31[6] M☉ |
Radius | 1.48+0.9 −0.8[1] R☉ |
Luminosity | 3.87±0.04[1] L☉ |
Surface gravity (log g) | 4.34±0.14[6] cgs |
Temperature | 6,719±228[6] K |
Metallicity [Fe/H] | −0.10[7] dex |
Age | 1.391[6] Gyr |
Other designations | |
Database references | |
SIMBAD | data |
The visible component has a stellar classification of F5 V Fe−0.7 CH−0.5,[3] which indicates it has the spectrum of an F-type main-sequence star with mild underabundances of iron and methylidyne. It is 1.4[6] billion years old with 1.3[6] times the mass of the Sun and 1.5[1] times the Sun's radius. The star is radiating 3.87[1] times the luminosity of the Sun from its photosphere at an effective temperature of 6,719 K.[6] The system has been detected as a source of X-ray emission.[11]