| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Aries[1] |
| Right ascension | 03h 24m 26.11530s[2] |
| Declination | +20° 48′ 12.5626″[2] |
| Apparent magnitude (V) | 6.07[1] |
| Characteristics | |
| Evolutionary stage | main sequence[3] |
| Spectral type | A1 V[4] |
| B−Vcolor index | −0.028±0.006[1] |
| Astrometry | |
| Radial velocity (Rv) | −6.2±2.3[1] km/s |
| Proper motion (μ) | RA: +0.28[5]mas/yr Dec.: −10.35[5]mas/yr |
| Parallax (π) | 9.4511±0.0940 mas[2] |
| Distance | 345 ± 3 ly (106 ± 1 pc) |
| Absolute magnitude (MV) | 1.17[1] |
| Details | |
| Mass | 2.66[6] M☉ |
| Radius | 2.13[6] R☉ |
| Luminosity | 46.7[6] L☉ |
| Surface gravity (log g) | 4.20[6] cgs |
| Temperature | 10,332[6] K |
| Rotation | 0.964 days[7] |
| Rotational velocity (v sin i) | 27[3] km/s |
| Age | 271[8] Myr |
| Other designations | |
| 65 Ari,BD+20°556,HD 21050,HIP 15870,HR 1027,SAO 75915[9] | |
| Database references | |
| SIMBAD | data |
65 Arietis is astar in the northernconstellation ofAries, located nearTau Arietis.65 Arietis, abbreviated '65 Ari', is theFlamsteed designation. It has anapparent visual magnitude of 6.07, which, according to theBortle Dark-Sky Scale, means it is faintly visible to the naked eye when viewed from dark suburban skies. Based upon an annualparallax shift of9.45±0.09 mas,[5] it is approximately 345light-years (106parsecs) distant from the Sun. The star is moving closer to the Earth with a heliocentricradial velocity of around −6 km/s.[1]
This is an ordinaryA-type main sequence star with astellar classification of A1 V.[4] It has about 2.1 times the mass of the Sun and shines with 47 times the Sun's luminosity. This energy is being radiated into outer space at aneffective temperature of10,332 K,[6] giving it the white-hued glow of anA-type star. It is roughly 23% of the way through its lifetime on themain sequence of corehydrogen burning stars.[3]
