The Fixed Stars

Alzirr

Xi Geminorum

The button, from the Arabic al-zirr. It stands at about 12° Cancer (tropical).

The button, at the foot of the immortal twin.

Xi Geminorum, Alzirr, from the Arabic al-zirr, the button. It marks the foot of Pollux, the immortal twin. A yellow-white star of the fourth magnitude; the tradition records its name and its place in the figure but assigns it no strong planetary nature.