Hipparchus, ancient astronomer, born at Nicæa; flourished in the 2nd century B.C.; discovered among other things the precession of the equinoxes, determined the place of the equinox, and catalogued 1000 fixed stars.
Definition taken from The Nuttall Encyclopædia, edited by the Reverend James Wood (1907)
Hiouen-Thsang * Hippias