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HVGC — Hyper Velocity Globular Cluster (for example: HVGC-1 in the supergiant elliptical galaxy Messier 87 in Virgo) HVS — HyperVelocity Stars; Hynek — J. Allen Hynek (double stars) Hz — Wulff D. Heintz (double stars) Hzg — E. Hertzsprung (double stars)
For example, Messier 1 is a supernova remnant, known as the Crab Nebula, and the great spiral Andromeda Galaxy is M31. Further inclusions followed; the first addition came from Nicolas Camille Flammarion in 1921, who added Messier 104 after finding Messier's side note in his 1781 edition exemplar of the catalogue.
1712 — Isaac Newton and Edmond Halley publish a catalog based on data from a Royal Astronomer who left all his data under seal, the official version would not be released for another decade. [7] 1725 — Posthumous publication of John Flamsteed's Historia Coelestis Britannica; 1771 — Charles Messier publishes his first list of nebulae
This is a list of NGC objects 6001–7000 from the New General Catalogue (NGC). The astronomical catalogue is composed mainly of star clusters, nebulae, and galaxies.Other objects in the catalogue can be found in the other subpages of the list of NGC objects.
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The Messier catalogue: the Messier objects are a set of astronomical objects first listed by French astronomer Charles Messier in 1771. Nebulae and Star Clusters was published in 1781, with objects M1–M110. The New General Catalogue or NGC, compiled in the 1880s by J. L. E. Dreyer, lists objects NGC 0001 – NGC 7840. It is one of the largest ...
The obscured dwarf galaxy PGC 39058 Hubble image of the elliptical galaxy PGC 6240. [1] The Principal Galaxies Catalogue (PGC) is an astronomical catalog published in 1989 that lists B1950 and J2000 equatorial coordinates and cross-identifications for 73,197 galaxies.
Pinwheel Galaxy (M101) +7.5 spiral galaxy 37 Messier 77 +8.9 radio galaxy 41 NGC 1232 +9.8 spiral galaxy 76 Messier 90 +9.5 spiral galaxy 77 NGC 1097 +9.5 galaxy interacting with its satellite 85 Whirlpool Galaxy (M51) +8.4 galaxy interacting with its satellite 116 Messier 60 +8.8 colliding galaxies 152 Virgo A (M87) +8.6 elliptical galaxy 153