Delphinus is a very small, but easily identified northern constellation. It is perhaps the most interesting of the four small constellations located near the Summer Triangle as it loosely resembles a dolphin. It consists of only five main stars, and is one of the 48 constellations cataloged by 2nd century astronomer Ptolemy. It is located south of Cygnus, and is flanked by Aquila and Pegasus. It reaches its highest nightfall ascension in October.
© James R. Johnson, 2014.