10 Arietis

10 Arietis
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Aries
Right ascension 02h 03m 39.34547s[1]
Declination +25° 56′ 07.7129″[1]
Apparent magnitude (V) 5.63[2]
Characteristics
Spectral type F8 IV + F9 V[2]
Astrometry
Radial velocity (Rv)+12.9[3] km/s
Proper motion (μ) RA: +128.01[1] mas/yr
Dec.: +11.19[1] mas/yr
Parallax (π)20.53 ± 0.67 mas[1]
Distance159 ± 5 ly
(49 ± 2 pc)
Absolute magnitude (MV)2.21[3]
Orbit[4]
Period (P)325 yr
Semi-major axis (a)1.39″
Eccentricity (e)0.59
Inclination (i)51°
Longitude of the node (Ω)20.5°
Periastron epoch (T)B1931.6
Argument of periastron (ω)
(secondary)		165°
Details
Metallicity [Fe/H]–0.10[3] dex
Age1.9[3] Gyr
Other designations
10 Ari, BD+25°341, HD 12558, HIP 9621, HR 605, SAO 75114, ADS 1631, WDS 02037+2556AB[5]
Database references
SIMBADdata

10 Arietis is a binary star[6] system in the northern constellation of Aries. 10 Arietis is the Flamsteed designation. It is visible to the naked eye as a dim, yellow-white hued star with a combined apparent visual magnitude of 5.63.[2] Based upon parallax measurements, it is located around 159 light years away from the Sun. The system is receding from the Earth with a heliocentric radial velocity of +12.9 km/s.[3]

The pair orbit each other with a period of approximately 325 years and an eccentricity of 0.59. The semimajor axis of the orbit has an angular size of 1.39″.[4] The magnitude 5.92[6] primary, designated component A, is an aging F-type subgiant star with a stellar classification of F8 IV.[2] The secondary star, component B, is a magnitude 7.95[6] F-type main-sequence star with a stellar classification of F9 V.[2] There is a magnitude 13.5 visual companion, designated component C, at an angular separation of 95.30″ along a position angle of 150°, as of 2001.[7]

  1. ^ a b c d e Cite error: The named reference aaa474_2_653 was invoked but never defined (see the help page).
  2. ^ a b c d e Cite error: The named reference aj81_245 was invoked but never defined (see the help page).
  3. ^ a b c d e Cite error: The named reference aaa501_3_941 was invoked but never defined (see the help page).
  4. ^ a b Cite error: The named reference orb 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. ^ a b c Cite error: The named reference Eggleton2008 was invoked but never defined (see the help page).
  7. ^ Cite error: The named reference WDSC2014 was invoked but never defined (see the help page).