Astronomical chart showing Andromeda in chains, two triangles, and a scepter with eagle's head and palm frond forming the constellations. Andromeda and Triangulum constellations were two of the 48 constellations listed by the 2nd century astronomer Ptolemy, and they remain two of the 88 modern constellations defined by the International Astronomical Union. Located north of the celestial equator, it is named for Andromeda, daughter of Cassiopeia, in the Greek myth, who was chained to a rock to be eaten by the sea monster Cetus. Andromeda is most prominent during autumn evenings in the Northern Hemisphere. Triangulum is a small constellation in the northern sky. Its name is Latin for triangle, derived from its three brightest stars, which form a nearly isosceles long and narrow triangle. Gloria Frederica was a constellation created by Johann Bode in 1787 to honor Frederick the Great, the king of Prussia who had died in the previous year. It is no longer in use. Urania's Mirror is a boxed set of 32 constellation cards first published by Samuel Leigh of the Strand, London, in or shortly before 1825. An unidentified lady, referred to by her nom-de-plume, Jehoshaphat Aspin, designed these whimsical astronomy cards. The engraver was Sidney Hall.