36 Arietis

36 Arietis
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Aries
Right ascension 02h 44m 19.11291s[1]
Declination +17° 45′ 50.1344″[1]
Apparent magnitude (V) 6.40[2]
Characteristics
Evolutionary stage giant
Spectral type K2 III[3]
B−V color index 1.143±0.008[2]
Astrometry
Radial velocity (Rv)−34.29±0.29[2] km/s
Proper motion (μ) RA: +36.786[1] mas/yr
Dec.: −36.103[1] mas/yr
Parallax (π)8.5941 ± 0.0377 mas[1]
Distance380 ± 2 ly
(116.4 ± 0.5 pc)
Absolute magnitude (MV)1.45±0.11[4]
Details[4]
Mass1.06±0.30 M
Radius9.82+0.13
−0.47
[1] R
Luminosity44.16±0.29[1] L
Surface gravity (log g)2.59±0.11 cgs
Temperature4,749±92 K
Metallicity [Fe/H]0.24 dex
Age1.95+0.68
−0.50
 Gyr
Other designations
36 Ari, BD+17°426, FK5 2190, GC 3294, HD 17017, HIP 12784, HR 808, SAO 93081[5]
Database references
SIMBADdata

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.[2] Based upon an annual parallax shift of 8.59±0.04 mas, this star is located 380 light-years (120 parsecs) away from the Sun. It is moving closer to the Earth with a heliocentric radial velocity of −34 km/s,[2] and is a member of the Wolf 630 moving group of stars that share a common motion through space.[6]

This object is an evolved giant star with a stellar classification of K2 III.[3] It is around two million years old with a similar mass as the Sun.[4] With the hydrogen at its core exhausted, the star has expanded to ten[1] 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[1] times the Sun's luminosity from its enlarged photosphere at an effective temperature of 4,749 K.[4]

  1. ^ a b c d e f g h i Cite error: The named reference GaiaDR2 was invoked but never defined (see the help page).
  2. ^ a b c d e Cite error: The named reference Anderson2012 was invoked but never defined (see the help page).
  3. ^ a b Cite error: The named reference Adams1935 was invoked but never defined (see the help page).
  4. ^ a b c d Cite error: The named reference Feuillet2016 was invoked but never defined (see the help page).
  5. ^ Cite error: The named reference SIMBAD was invoked but never defined (see the help page).
  6. ^ Cite error: The named reference McDonald1983 was invoked but never defined (see the help page).