The Little Horse

The Little Horse

[eh-QUOO-lee-us]   This insignificant constellation, second-smallest in the sky, first appeared among the 48 constellations listed by the Greek astronomer Ptolemy in the second century AD. It was unknown to Aratus 400 years earlier. The actual inventor is unknown; it may have been Ptolemy himself, or one of his predecessors such as Hipparchus in the second century BC.