LDN 673
LDN 673 is a large dark nebula located in the constellation of Aquila. The LDN designation comes from an abbreviation of Lynds Dark Nebula, a catalog of dark nebula published by B.T. Lynds in 1962 in the Astrophysical Journal Supplement series. LDN 673 actually lies in front of the larger Aquila Rift that is part of the Great Rift in the Milky Way that stretches from Centaurus to Cygnus. LDN 673 is located in the Aquila molecular cloud 600 light-years away. LDN 673 has an apparent size of 1.5 x 1 degrees, which corresponds to a real size of 15 x 10 light-years in space. North is to the right in the above image.
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