出典:Wikipedia
出典:『Wikipedia』 (2011/07/16 02:11 UTC 版)
NGC 246 (also known as the Skull Nebula or Caldwell 56) is a planetary nebula in the constellation Cetus. The nebula and the stars associated with it are listed in several catalogs, as summarized by the SIMBAD database. The nebula's central star is the white dwarf HIP 3678.