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The Omega Nebula is between 5,000 and 6,000 light-years from Earth and it spans some 15 light-years in diameter. The cloud of interstellar matter of which this nebula is a part is roughly 40 light-years in diameter and has a mass of 30,000 solar masses. [3] The total mass of the Omega Nebula is an estimated 800 solar masses. [4]
Omega Nebula: Omega Nebula, Messier 17, NGC 6618, Swan Nebula, Sharpless 45, RCW 160, Gum 81 ... Gum 83: Eagle Nebula: Sh2 49, Messier 16, NGC 6611, RCW 165, Gum 83 ...
Iris Nebula: Open Cluster and Nebula: 1.4 Cepheus: 7 C5 IC 342: Hidden Galaxy [7] Spiral Galaxy: 10,000 Camelopardalis: 9 C6 NGC 6543: Cat's Eye Nebula: Planetary Nebula: 3 Draco: 9 C7 NGC 2403 Spiral Galaxy: 14,000 Camelopardalis: 8.4 C8 NGC 559 Open Cluster: 3.7 Cassiopeia: 9.5 C9 Sh2-155: Cave Nebula: Nebula: 2.8 Cepheus: 7.7 C10 NGC 663 ...
Tel., 17, part no 5, 409 (2001) Auner — (for example: ... Karhula — (for example: open star cluster Karhula 1 near planetary nebula Messier 76 in Perseus)
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Omega Nebula; Orion Nebula; Pistol Nebula ... Soul Nebula; Tarantula Nebula; Trifid Nebula; Witch Head Nebula; Messier 43; Messier 78, reflection nebula; NGC 248 ...
Articles with the Messier number in the title use [[Category:Messier objects|###]], dropping the M prefix, and using only the number. The number should be padded up to 3 digits using zeroes. Articles without the Messier number in the title use [[Category:Messier objects]]. A redirect containing the Messier number should also be added to the ...
A number of Messier objects and other objects visible through an amateur's telescope or binoculars are found in the Sagittarius Arm (here listed approximately in order from east to west along the arm): M11, the Wild Duck Cluster in Scutum (RA 18h 51m) Open Cluster M26 in Scutum (RA 18h 45m) M16, the Eagle Nebula in Serpens (RA 18h 19m)