in the last ten million years. The group is thought connected to another group of six galaxies known as the NGC 784 group, named for its principal galaxy, the barred spiral NGC 784. Together with two isolated dwarf galaxies, these fourteen appear to be moving in a common direction and constitute a group possibly located on a dark matter filament. 3C 48 was the first quasar ever to be observed, although its true identity was not uncovered until after that of 3C 273 in 1963. It has an apparent magnitude of 16.2 and is located about 5 degrees northwest of Alpha Trianguli. See also Triangulum (Chinese astronomy) References External links The Deep Photographic Guide to the Constellations: Triangulum The clickable Triangulum Warburg Institute Iconographic Database (medieval and early modern images of the Triangulum) Constellations Northern constellations Constellations listed by Ptolemy