Search results
Results from the WOW.Com Content Network
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.
RBC — Revised Bologna Catalogue (for example: globular cluster RBC EXT8 in Messier 31; the Andromeda Galaxy) RBS — Rosat Bright Survey (bright X-ray sources) RC — Reference Catalogue. RC2 — Reference Catalogue, 2nd edition; RC3 — Reference Catalogue, 3rd edition
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 ...
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
NGC 2000.0 (also known as the Complete New General Catalog and Index Catalog of Nebulae and Star Clusters) is a 1988 compilation of the NGC and IC made by Roger W. Sinnott, using the J2000.0 coordinates. [17] [18] It incorporates several corrections and errata made by astronomers over the years. [5]
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.
Messier 101 (also known as the Pinwheel Galaxy or NGC 5457) is a face-on spiral galaxy in the constellation Ursa Major. In a letter written in 1783 to J. Bernoulli , Pierre Méchain (who had shared information about his discoveries with Messier) claimed that M102 was actually an accidental duplication of M101 in the catalog.
Main page; Contents; Current events; Random article; About Wikipedia; Contact us; Donate