  | |
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Perseus |
| Right ascension | 02h 44m 05.15918s[1] |
| Declination | +44° 17′ 49.3488″[1] |
| Apparent magnitude (V) | 5.43[2] |
| Characteristics | |
| Spectral type | G0Ib[2] |
| B−Vcolor index | +0.86[3] |
| Astrometry | |
| Radial velocity (Rv) | −1.22±0.15[1] km/s |
| Proper motion (μ) | RA: 2.902[1]mas/yr Dec.: −6.682[1]mas/yr |
| Parallax (π) | 1.7466±0.0989 mas[1] |
| Distance | 1,900 ± 100 ly (570 ± 30 pc) |
| Absolute magnitude (MV) | −1.57[2] |
| Details | |
| Mass | 4.03[4] M☉ |
| Radius | 57.4+3.7 −6.5[1] R☉ |
| Luminosity | 372[4] L☉ |
| Surface gravity (log g) | 1.42[2] cgs |
| Temperature | 5,624[4] K |
| Metallicity[Fe/H] | 0.00[2] dex |
| Rotational velocity (v sin i) | 8.7[4] km/s |
| Age | 162[4] Myr |
| Other designations | |
| 14 Per,BD+43°566,FK5 1077,HD 16901,HIP 12768,HR 800,SAO 38289[5] | |
| Database references | |
| SIMBAD | data |
14 Persei is a singlestar[6] in the northernconstellationPerseus, located roughly 1,900 light years away from the Sun. It is visible to the naked eye as a faint, yellow-hued star with anapparent visual magnitude is 5.43.[2] The object is slowly moving closer to the Earth with a heliocentricradial velocity of −1.2 km/s.[1]
Thespectral classification of 14 Persei is as a G0yellow supergiant, but in other respects it appears to be agiant star.[2] The class has been given asG0Ib-II Ca1 CH-1[7] orG0Ib-IIa Ca1,[8] where the abundance suffixes indicate stronger Calciumlines than expected for its class, or weaker hydrocarbons. Other analyses of thespectrum give a class of G0Ib.[2][9] Stellar models of 14 Persei yield an estimated mass four[4] times that of the Sun and an age of 162[4] million years. It has expanded to 57[1] times theSun's radius and has aprojected rotational velocity of 8.7 km/s.[4] The star is radiating 372[4] times as muchluminosity compared to the Sun from its enlargedphotosphere at aneffective temperature of 5,624 K.[4]
14 Persei has been calculated to lie within theCepheid instability strip although it is not considered to be variable. Uncertainty in the absolute magnitude means that the star may actually lie near the instability strip but not on it. Small periodicradial velocity variations are seen, but an order of magnitude or more smaller than forCepheid variables and with longer periods than would be expected for pulsations. The cause of the radial velocity changes and the difference between variable and non-variable stars within the instability strip is unknown.[10]
