At the heart of this system is a close orbiting pair, designated μ Ari Aa, consisting of a magnitude 6.38 A-type main sequence star with a stellar classification of A0Vp, and a magnitude 8.38 F-type main sequence companion with a classification of F2V. These two components have an angular separation of 0.04arcseconds. A third component, designated μ Ari Ab, consists of a magnitude 6.72 star with a classification of A1V, orbiting the inner pair with a period of 8.845years and an eccentricity of 0.34.[4] The orbit of this star has been measured using lunar occultations.[8] A smaller fourth component, μ Ari B, at an angular separation of 19.1arcseconds, has a magnitude of 12.2.[4]
According to R. H. Allen's Star Names, μ Ari together with the stars of Musca Borealis (33 Ari, 35 Ari, 39 Ari, and 41 Ari) formed the Coptic asterism Koleōn, "the Belly, or Scabbard".[11] A 1971 NASA catalog of star names listed μ Ari with the name Koleon.[12]
12Osawa, K.; Hata, S. (1960), "Three colour photometry of B8-A2 stars.", Annals of the Tokyo Astronomical Observatory, 6: 148, Bibcode:1960AnTok...6..148O.
↑Palmer, D. R.; etal. (1968), "The radial velocities spectral types and projected rotational velocities of 633 bright northern A stars", Royal Observatory Bulletin, 135: 385, Bibcode:1968RGOB..135..385P.
1234Mason, Brian D. (1997), "Binary Star Orbits from Speckle Interferometry. XI. Orbits of Twelve Lunar Occultation Systems", The Astronomical Journal, 114: 808, Bibcode:1997AJ....114..808M, doi:10.1086/118514.
