| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Cetus |
| Right ascension | 00h 35m 32.833s[1] |
| Declination | −00° 30′ 20.20″[1] |
| Apparent magnitude (V) | 5.84[2] |
| Characteristics | |
| Evolutionary stage | Hertzsprung gap[3] |
| Spectral type | F5 V[4][5] or F5 IV[2] |
| B−Vcolor index | 0.444±0.006[6] |
| Astrometry | |
| Radial velocity (Rv) | +11.3±0.2[7] km/s |
| Proper motion (μ) | RA: +143.173mas/yr[1] Dec.: −62.295mas/yr[1] |
| Parallax (π) | 17.4181±0.0314 mas[1] |
| Distance | 187.3 ± 0.3 ly (57.4 ± 0.1 pc) |
| Absolute magnitude (MV) | 2.26±0.04[8] |
| Details | |
| Mass | 1.55±0.1[2] M☉ |
| Radius | 2.6[2] R☉ |
| Luminosity | 10.7[2] L☉ |
| Surface gravity (log g) | 3.87±0.15[9] cgs |
| Temperature | 6,583±90[9] K |
| Metallicity [Fe/H] | −0.11±0.06[9] dex |
| Rotational velocity (v sin i) | 5[2] km/s |
| Age | 2.1±0.4[9] Gyr |
| Other designations | |
| 14 Cet,BD−01° 68,FK5 2036,GC 701,HD 3229,HIP 2787,HR 143,SAO 128843[10] | |
| Database references | |
| SIMBAD | data |
14 Ceti is a single[11]star in theequatorialconstellation ofCetus. It is faintly visible to the naked eye under good viewing conditions, having anapparent visual magnitude of 5.84.[2] The distance to 14 Ceti can be estimated from its annualparallax shift of17.4″,[1] which puts it 187 light years away. It is moving further from the Earth with a heliocentricradial velocity of +11 km/s,[7] having recently come no closer than 178 ly.[6]
Gray (1989) as well as Houk and Swift (1999) have this star classified as anF-type main-sequence star with astellar classification of F5 V.[4][5] However, in the 5th revised edition of theBright Star Catalogue it was classed by Hoffleit and Warren (1991) as a moreevolvedsubgiant star with a class of F5 IV.[12] Theabsolute magnitude andeffective temperature for this star shows that it is entering theHertzsprung gap, which is occupied by a class of stars that have consumed the hydrogen at theircore but have not yet begun hydrogen fusion along a shell surrounding the center.[11]
Evolutionary models for this star give an estimated age of around 2.1[9] billion years with 1.6[2] times themass of the Sun. It has 2.6[2] times theSun's radius and is radiating 10.7[2] times theSun's luminosity from itsphotosphere at an effective temperature of about 6,583 K.[9] There is a thinconvective envelope near its surface.[2] The star has a lower abundance of elements more massive than helium – what astronomers' term themetallicity – compared to the Sun.[9] Theprojected rotational velocity is a relatively low 5 km/s, but the rotation rate is unknown since theaxial tilt hasn't been determined.[2]
14 Ceti shows anX-ray emission of0.33×1030 erg s−1, which is on the high side for an F5 star. Both the corona and chromosphere of this star show indications of amagnetic field, and a surface field was detected in 2009 with a strength of−30 G. This made it the only known star between classes F0 and F7 to have aZeeman effect detected. Two possible explanations for this field are that it is a fast rotator with adynamo-driven field, or that it is a formerAp star.[11] The activity properties of this star make it more likely to be the latter.[3]
