| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Aries |
| Right ascension | 03h 22m 11.89351s[1] |
| Declination | +27° 36′ 27.1911″[1] |
| Apparent magnitude (V) | 5.52[2] |
| Characteristics | |
| Evolutionary stage | horizontal branch |
| Spectral type | G5 III[3] |
| B−Vcolor index | 1.100±0.015[4] |
| Astrometry | |
| Radial velocity (Rv) | 7.0±0.3[4] km/s |
| Proper motion (μ) | RA: +5.874[1]mas/yr Dec.: −14.102[1]mas/yr |
| Parallax (π) | 4.7394±0.1128 mas[1] |
| Distance | 690 ± 20 ly (211 ± 5 pc) |
| Absolute magnitude (MV) | −1.57[4] |
| Details[5] | |
| Mass | 3.74+0.38 −0.21 M☉ |
| Radius | 35.27+2.81 −3.81 R☉ |
| Luminosity | 533.48 L☉ |
| Surface gravity (log g) | 1.92+0.07 −0.08 cgs |
| Temperature | 4,665+30 −31 K |
| Metallicity [Fe/H] | −0.17[6] dex |
| Rotational velocity (v sin i) | 9.43[6] km/s |
| Age | 219+38 −53 Myr |
| Other designations | |
| 62 Ari,BD+27°500,HD 20825,HIP 15696,HR 1012,SAO 75892[7] | |
| Database references | |
| SIMBAD | data |
62 Arietis is a single[3]star in the northernconstellation ofAries, a few degrees to the north ofTau Arietis.62 Arietis is theFlamsteed designation. It is visible to the naked eye as a dim, yellow-hued star with anapparent visual magnitude of 5.52.[2] Based upon an annualparallax shift of4.7±0.1 mas,[1] it is approximately 690light-years (210parsecs) distant from the Earth.
This object is an aginggiant star with astellar classification of G5 III,[3] most likely (96% chance) on thehorizontal branch.[5] Having exhausted the supply of hydrogen at itscore, the star has expanded to 35 times theSun's radius. It is around 219 million years old with 3.7 times themass of the Sun. The star is radiating 533 times theSun's luminosity from its enlargedphotosphere at aneffective temperature of 4,665 K.[5]
InChinese astronomy, 62 Arietis is called 天阿,Pinyin: Tiānhé, meaningCelestial River, because this star is marking itself and stand alone inCelestial River asterism,Hairy Head mansion (see :Chinese constellation).[8] 天阿 (Tiānhé) is westernized intoTeen Ho, but according to another opinion about this asterism,Teen Ho is asterism consisting four stars in Aries.[9]
Another "Tiānhé" (Celestial River) inTail mansion, is asterism consisting the stars inOphiuchus[10]
