Centauri zeta
Zeta Centauri (ζ Cen/ζ Centauri) is a star of the Constellation of the Centaure. It also bears the traditional name ir Alnair or Al-Na' Al Batn , of the Arab البطنالناير ir Al-Na' Al-baţn '' meaning " The brilliant one of the estomac".
It is a star spectroscopic Binaire with one period a little higher than 8 days and an orbital eccentricity estimated at 0,5.
References
- A.C. Maury, 1922, " The Orbit off the Spectroscopic Binary ζ Centauri" , Harvard College Observatory Circular, vol. 233.
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