It was discovered to be a visual binary in 1719 by James Bradley.
It was discovered to be a visual binary in 1719 by James Bradley. That pair is part of a star system with another binary,* composed of two red dwarfs, which are located 72 arcseconds away, but share the same parallax and proper motion. Spectrographic analysis of the primary stars revealed that each is actually a binary, proving that this star system is actually composed of 6 different stars. FTP, what is this star, designated alpha Geminorum, though it is fainter than beta Geminorum, or Pollux?
It was discovered to be a visual binary in 1719 by James Bradley.
Castor (accept Alpha Geminorum before it is said)