6 Ceti
Star in the constellation Cetus
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6 Ceti is a single[9] star in the equatorial constellation of Cetus. It is visible to the naked eye with an apparent magnitude of 4.89.[2] The annual parallax shift as measured from Earth's orbit is 53.34 mas, which yields a distance estimate of 61.1 light years. The star is moving further from the Sun with a constant radial velocity of +16.70 km/s.[4] It is one of the IAU's standard velocity stars.[10]
 | |
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Cetus |
| Right ascension | 00h 11m 15.85804s[1] |
| Declination | −15° 28′ 04.7205″[1] |
| Apparent magnitude (V) | 4.89[2] |
| Characteristics | |
| Evolutionary stage | main sequence[1] |
| Spectral type | F8 V Fe−0.8 CH−0.5[3] |
| B−V color index | 0.487±0.012[2] |
| Astrometry | |
| Radial velocity (Rv) | +16.70±0.08[4] km/s |
| Proper motion (μ) | RA: −82.828[1] mas/yr Dec.: −269.549[1] mas/yr |
| Parallax (π) | 52.9489±0.0958 mas[1] |
| Distance | 61.6 ± 0.1 ly (18.89 ± 0.03 pc) |
| Absolute magnitude (MV) | 3.53[2] |
| Details | |
| Mass | 1.19[5] M☉ |
| Radius | 1.50[5] R☉ |
| Luminosity | 3.00[5] L☉ |
| Surface gravity (log g) | 4.16[5] cgs |
| Temperature | 6,192[5] K |
| Metallicity [Fe/H] | −0.33±0.06[6] dex |
| Rotational velocity (v sin i) | 4.88[7] km/s |
| Age | 4.2+0.8 −0.9[6] Gyr |
| Other designations | |
| 6 Cet, BD−16°17, GJ 10, HD 693, HIP 910, HR 33, SAO 147133[8] | |
| Database references | |
| SIMBAD | data |
Gray et al. (2006) assigned this star a stellar classification of F8 V Fe−0.8 CH−0.5,[3] indicating it is an F-type main-sequence star with an underabundance of iron and the CH molecule in its stellar atmosphere. It is about 4.2 billion years old with 1.2 times the mass of the Sun[5] and is spinning with a projected rotational velocity of 4.88 km/s.[7] The star is radiating three times the Sun's luminosity from its photosphere at an effective temperature of about 6,192 K.[5]