Rho Aurigae
Rho Aurigae (ρ Aur, ρ Aurigae) is the Bayer designation for a binary star system in the northern constellation of Auriga. It is faintly visible to the naked eye with an apparent visual magnitude of +5.22. Judging by parallax measurements, this system is approximately distant from the Earth, give or take a 30-light-year margin of error. System. ρ Aurigae is a single-lined spectroscopic binary system; the presence of a companion object is revealed by shifts in the stellar spectrum. The pair orbit each other with a period of 34.49 days and an orbital eccentricity of  0.10. The primary component of this system is a B-type main-sequence star defined as a standard star for the stellar classification of B5 V. The deduced mass of the secondary and the lack of evidence for it in the spectrum suggest it may be a B- or A-type star somewhat less luminous than the primary. Name. Rho Aurigae, along with λ Aur and μ Aur, were Kazwini's "Al Ḣibāʽ" (ألحباع), the Tent. According to the catalogue of stars in the "Technical Memorandum 33-507 – A Reduced Star Catalog Containing 537 Named Stars", "Al Ḣibāʽ" were the  title for three stars: λ Aur as "Al Ḣibāʽ I", μ Aur as "Al Ḣibāʽ II" and σ Aur as "Al Ḣibāʽ III". In Chinese, (), meaning "Pool of Harmony", refers to an asterism consisting of ρ Aurigae, λ Aurigae and HD 36041. Consequently, the Chinese name for ρ Aurigae itself is (, ).