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By 1781 the final published list grows to 103 objects, 34 of which turn out to be galaxies. 1785 — William Herschel carried the first attempt to describe the shape of the Milky Way and the position of the Sun in it by carefully counting the number of stars in different regions of the sky. He produced a diagram of the shape of the galaxy with ...
Herschel's discoveries were supplemented by those of Caroline Herschel (11 objects) and his son John Herschel (1754 objects) and published by him as General Catalogue of Nebulae and Clusters in 1864. This catalogue was later edited by John Dreyer , supplemented with discoveries by many other 19th-century astronomers, and published in 1888 as ...
The Catalogue of Nebulae and Clusters of Stars was first published in 1786 by William Herschel in the Philosophical Transactions of the Royal Society of London. [1] In 1789, he added another 1,000 entries, [2] and finally another 500 in 1802, [3] bringing the total to 2,500 entries. This catalogue originated the usage of letters and catalogue ...
The original New General Catalogue was compiled during the 1880s by John Louis Emil Dreyer using observations from William Herschel and his son John, among others. Dreyer had already published a supplement to Herschel's General Catalogue of Nebulae and Clusters (GC), [ 2 ] containing about 1,000 new objects.
It is located at a distance of circa 130 million light years from Earth, which, given its apparent dimensions, means that NGC 5982 is about 100,000 light years across. It was discovered by William Herschel on May 25, 1788. [3] NGC 5982 has a kinematically decoupled nucleus, with its major axis being nearly perpendicular to the rotation of the ...
This galaxy was later observed by the British astronomer John Herschel on November 19, 1835, and it is this observation that was added to the New General Catalog under the designation NGC 1340. [ 3 ] To date, 34 non- redshift measurements yield a distance of 18.688 ± 3.160 Mpc (∼61 million ly), [ 4 ] which is within the Hubble distance range.
NGC 4517 is a spiral galaxy located approximately 40 million light-years away in the constellation of Virgo. It was discovered in 1784 by William Herschel. [1] It is a member of the Virgo II Groups, a series of galaxies and galaxy clusters strung out from the southern edge of the Virgo Supercluster. [3]
It was discovered by William Herschel in 1784. It has an approximately 300,000 light-years long tidal tail. Along with M65 and M66, NGC 3628 forms the Leo Triplet, a small group of galaxies. Its most conspicuous feature is the broad and obscuring band of dust located along the outer edge of its spiral arms, effectively transecting the galaxy to ...