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Messier 9 or M9 (also designated NGC 6333) is a globular cluster in the constellation of Ophiuchus. It is positioned in the southern part of the constellation to the southwest of Eta Ophiuchi , and lies atop a dark cloud of dust designated Barnard 64.
[9] [10] 2020 — On October 8, 2020, scientists released the largest and most detailed 3D maps of the Universe, called "PS1-STRM". The data of the MAST was created using artificial neural networks and combines data from the Sloan Digital Sky Survey and others. Users can query the dataset online or download it in its entirety of ~300GB.
Other astronomers, using side notes in Messier's texts, eventually filled out the list up to 110 objects. [9] The catalogue consists of a diverse range of astronomical objects, from star clusters and nebulae to galaxies. For example, Messier 1 is a supernova remnant, known as the Crab Nebula, and the great spiral Andromeda Galaxy is M31.
While the Messier catalogue is used by amateur astronomers as a list of deep-sky objects for observation, Moore noted that Messier's list was not compiled for that purpose and excluded many of the sky's brightest deep-sky objects, [1] such as the Hyades, the Double Cluster (NGC 869 and NGC 884), and the Sculptor Galaxy (NGC 253). The Messier ...
The Herschel 400 catalogue is a subset of William Herschel's original Catalogue of Nebulae and Clusters of Stars, selected by Brenda F. Guzman (Branchett), Lydel Guzman, Paul Jones, James Morris, Peggy Taylor and Sara Saey of the Ancient City Astronomy Club in St. Augustine, Florida, United States c. 1980.
The Sharpless catalog is a list of 313 H II regions (emission nebulae) intended to be comprehensive north of declination −27°.(It does include some nebulae south of that declination as well.)
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The Leo Triplet, which includes the spiral galaxies M65, M66, and NGC 3628, [3] [4] [5] is located physically near the M96 Group. [10] Some group identification algorithms actually identify the Leo Triplet at part of the M96 Group.