Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
---|---|
Constellation | Eridanus |
Right ascension | 03h 46m 50.88819s[1] |
Declination | −23° 14′ 59.0046″[1] |
Apparent magnitude (V) | 4.22[2] |
Characteristics | |
Spectral type | F5IV-V[3] |
U−B color index | −0.03[2] |
B−V color index | +0.43[2] |
Astrometry | |
Radial velocity (Rv) | 8.0±0.8[4] km/s |
Proper motion (μ) | RA: −158.84[1] mas/yr Dec.: −528.95[1] mas/yr |
Parallax (π) | 56.73 ± 0.19 mas[1] |
Distance | 57.5 ± 0.2 ly (17.63 ± 0.06 pc) |
Absolute magnitude (MV) | 2.98[5] |
Details | |
Mass | 1.35[4] M☉ |
Radius | 1.80+0.08 −0.03[6] R☉ |
Luminosity | 5.47±0.06[6] L☉ |
Surface gravity (log g) | 4.21±0.13[4] cgs |
Temperature | 6,584+47 −144[6] K |
Metallicity [Fe/H] | −0.03±0.11[4] dex |
Rotational velocity (v sin i) | 16.25[7] km/s |
Age | 2.0[4] Gyr |
Other designations | |
Database references | |
SIMBAD | data |
Tau6 Eridani, Latinized from τ6 Eridani, is a single[9] star in the equatorial constellation of Eridanus, located near the constellation border with Fornax. It has a yellow-white hue with an apparent visual magnitude of 4.22,[2] which is bright enough to be seen with the naked eye. Based upon parallax measurements, the distance to this star is around 57.5 light years.[1] It is drifting further away with a radial velocity of +8 km/s.[4]
The spectrum of Tau6 Eridani matches a stellar classification of F5IV-V,[3] indicating it is an F-type star that shows traits of both a main sequence star and a subgiant. It has an estimated 135%[4] of the Sun's mass and about 1.8 time the radius of the Sun.[6] The star is radiating 5.5[6] times the luminosity of the Sun at an effective temperature of 6,508 K,[4] and it does not display any surface magnetic activity.[7] The star has been examined for infrared excess emission that could indicate the presence of circumstellar matter, but none has been detected.[10]