36 Arietis
| Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
|---|---|
| Constellation | Aries |
| Right ascension | 02h 44m 19.11285s |
| Declination | +17° 45′ 50.1359″ |
| Apparent magnitude (V) | 6.40 |
| Characteristics | |
| Evolutionary stage | red giant branch |
| Spectral type | K2 III |
| B−V color index | 1.143±0.008 |
| Astrometry | |
| Radial velocity (Rv) | −34.29±0.29 km/s |
| Proper motion (μ) | RA: +36.836 mas/yr Dec.: −36.203 mas/yr |
| Parallax (π) | 8.7094±0.0252 mas |
| Distance | 374 ± 1 ly (114.8 ± 0.3 pc) |
| Absolute magnitude (MV) | 1.45±0.11 |
| Details | |
| Mass | 1.06±0.30 M☉ |
| Radius | 9.82+0.13 −0.47 R☉ |
| Luminosity | 44.16±0.29 L☉ |
| Surface gravity (log g) | 2.59±0.11 cgs |
| Temperature | 4,749±92 K |
| Metallicity [Fe/H] | 0.24 dex |
| Age | 1.95+0.68 −0.50 Gyr |
| Other designations | |
| 36 Ari, BD+17°426, FK5 2190, GC 3294, HD 17017, HIP 12784, HR 808, SAO 93081 | |
| Database references | |
| SIMBAD | data |
36 Arietis is a star in the northern constellation of Aries. 36 Arietis is the Flamsteed designation. It is a dim, orange-hued star that is a challenge to view with the naked eye, having an apparent visual magnitude of 6.40. Based upon an annual parallax shift of 8.71±0.02 mas, this star is located 374 light-years (114.8 parsecs) away from the Sun. It is moving closer to the Earth with a heliocentric radial velocity of −34 km/s, and is a member of the Wolf 630 moving group of stars that share a common motion through space.
This object is an evolved giant star with a stellar classification of K2 III. It is around two million years old with a similar mass as the Sun. With the hydrogen at its core exhausted, the star has expanded to ten times the girth of the Sun. It has a higher than solar metallicity, showing a high abundance of iron in its spectrum. The star is radiating 44 times the Sun's luminosity from its enlarged photosphere at an effective temperature of 4,749 K.