Phi Ceti

The Bayer designation Phi Ceti (φ Cet / φ Ceti) is shared by four stars, in the constellation Cetus:

• φ¹ Ceti (HR 194), a red clump giant
• φ² Ceti (HR 235), an F7 main sequence star
• φ³ Ceti (HR 267), a red giant
• φ⁴ Ceti (HR 279), a G8 giant

All of them were the Arabs' Al Nithām.^[1] According to the catalogue of stars in the Technical Memorandum 33-507 - A Reduced Star Catalog Containing 537 Named Stars, Al Nitham were the title for four stars :φ¹ Ceti as Al Nitham I, φ² Ceti as Al Nitham II, φ³ Ceti as Al Nitham III and φ⁴ Ceti as Al Nitham IV. ^[2]

φ¹ Ceti and φ³ Ceti were member of asterism 天溷 (Tiān Hùn), Celestial Pigsty, Legs mansion.^[3]