NGC 247 [SEP] constellation
NGC 247
NGC 247 is an intermediate spiral galaxy (although it is sometimes classified as a dwarf spiral galaxy) about 11.1 Mly away in the constellation Cetus. This distance was confirmed in late February 2011. Previous measurements showed that the galaxy was about 12.2 Mly away, but this was proved to be wrong. NGC 247 is a member of the Sculptor Group.
NGC 247 is marred by an unusually large void on one side of its spiral disk. This void contains some older, redder stars but no younger,
NGC 508
NGC 508, also occasionally referred to as PGC 5099 or UGC 939, is an elliptical galaxy in the constellation Pisces. It located approximately 247 million light-years from the Solar System and was discovered on 12 September 1784 by British astronomer William Herschel.
Observation history.
Herschel discovered NGC 508 along with NGC 507 and described the objects as "Two. Both eF, S, but unequal.". His observed position was catalogued and is accurate. John Louis Emil Dreyer, creator of the New