NGC 644 is a barred spiral galaxy in the constellation Phoenix in the southern sky. It is estimated to be 270 million light-years from the Milky Way and...

This is a list of NGC objects 1–1000 from the New General Catalogue (NGC). The astronomical catalogue is composed mainly of star clusters, nebulae, and...

The Carina Nebula or Eta Carinae Nebula (catalogued as NGC 3372; also known as the Great Carina Nebula) is a large, complex area of bright and dark nebulosity...

"Three open clusters containing Cepheids: NGC 6649, NGC 6664, and Berkeley 55". Astronomy & Astrophysics. 644: A136. arXiv:2009.12418. doi:10.1051/0004-6361/202038495...

Elliptical Galaxy NGC 4552 in the Virgo Cluster". The Astrophysical Journal. 644 (1): 155–166. arXiv:astro-ph/0508588. Bibcode:2006ApJ...644..155M. doi:10...

NGC 905 is a lenticular galaxy with an active nucleus in the constellation Cetus south. It is estimated to be 644 million light-years from the Milky Way...

NGC 246 (also known as the Skull Nebula or Caldwell 56) is a planetary nebula in the constellation Cetus. It is the first known planetary nebula to have...

NGC 6753 is a massive unbarred spiral galaxy, seen almost exactly face-on, in the southern constellation of Pavo. It was discovered by the English astronomer...

together with the name of the observing project (HUDF, SDSS, 3C, CFHQS, NGC/IC, etc.) This is a list of galaxies that are well known by something other...

aperture of at least 4 in (10 cm). The estimated distance to Kepler-22 is 644 light-years (197 parsecs). Kepler-22 is slightly smaller and cooler than...