radio masers discovered. VY CMa is embedded in the large molecular cloud Sh2-310, a large, quite local star-forming H II region—its diameter: 480 arcminutes...

listed the two nebulae together in his second list of 313 bright nebulae as Sh2-117. American astronomer Beverly T. Lynds catalogued the obscuring dust cloud...

The California Nebula (Also known NGC 1499 or Sh2-220) is an emission nebula located in the constellation Perseus. Its name comes from its resemblance...

NGC 281, IC 11 or Sh2-184 is a bright emission nebula and part of an H II region in the northern constellation of Cassiopeia and is part of the Milky...

Westerhout 40 or W40 (also designated Sharpless 64, Sh2-64, or RCW 174) is a star-forming region in the Milky Way located in the constellation Serpens...

it H VIII.77. The nebula is known as S 142 in the 1959 Sharpless catalog (Sh2-142). It is extremely difficult to observe visually, usually requiring very...

7 pc) Absolute magnitude (V) −3.1±0.5[b] Notable features Optical pulsar Designations Messier 1, NGC 1952, Taurus A, Sh2-244 See also: Lists of nebulae...

The Flame Nebula, designated as NGC 2024 and Sh2-277, is an emission nebula in the constellation Orion. It is about 1350 light-years away. At that distance...

Observation data: J2000 epoch Subtype Diffuse + Dark Distance 2,700 ly Constellation Monoceros Designations NGC 2264, Sh2-273 See also: Lists of nebulae...

99) around Pi Scorpii and LBN 1094 (south of Pi Scorpii). To the east of Sh2-1 are LBN 1092 and LBN 1093. Observation data: J2000 epoch Right ascension...