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Charles Messier. The first edition of 1774 covered 45 objects (M1 to M45).The total list published by Messier in 1781 contained 103 objects, but the list was expanded through successive additions by other astronomers, motivated by notes in Messier's and Méchain's texts indicating that at least one of them knew of the additional objects.
Messier 78 or M78, also known as NGC 2068, is a reflection nebula in the constellation Orion. It was discovered by Pierre Méchain in 1780 and included by Charles Messier in his catalog of comet-like objects that same year. [4] M78 is the brightest diffuse reflection nebula of a group of nebulae that includes NGC 2064, NGC 2067 and NGC 2071.
Dumbbell Nebula. known for a white dwarf. The Dumbbell Nebula (also known as the Apple Core Nebula, Messier 27, and NGC 6853) is a planetary nebula (nebulosity surrounding a white dwarf) in the constellation Vulpecula, at a distance of about 1360 light-years. [1] It was the first such nebula to be discovered, by Charles Messier in 1764.
Messier 18. Messier 18 or M18, also designated NGC 6613 and sometimes known as the Black Swan Cluster, is an open cluster of stars in the constellation Sagittarius. It was discovered by Charles Messier in 1764 and included in his list of comet -like objects. [8] From the perspective of Earth, M18 is situated between the Omega Nebula (M17) and ...
The Wild Duck Cluster (also known as Messier 11, or NGC 6705) is an open cluster of stars in the constellation Scutum (the Shield). It was discovered by Gottfried Kirch in 1681. [3] Charles Messier included it in his catalogue of diffuse objects in 1764. Its popular name derives from the brighter stars forming a triangle which could resemble a ...
Messier 103 is an easy object to find and the cluster is visible in binoculars or a small telescope. [8] object to find and the cluster is visible even with the use of binoculars. [4] [9] M103 can be seen as a nebulous fan-shaped patch, and is about a fifth the apparent diameter of the Moon or 6 arcminute (6′) or 0.1° across. To find M103 ...
NGC 4579, UGC 7796, PGC 42168, VCC 1727, GC 3121 [2] Messier 58 (also known as M58 and NGC 4579) is an intermediate barred spiral galaxy with a weak inner ring structure located within the constellation Virgo, approximately 68 million light-years away from Earth. [9][10] It was discovered by Charles Messier on April 15, 1779 and is one of four ...
This cluster is located 1,205 pc [2] away from Earth with an extinction of 0.87. [10] Messier 21 is around 6.6 million years old with a mass of 783.4 M ☉. [5] It has a tidal radius of 11.7 pc, [5] with a nucleus radius of 1.6 ± 0.1 pc and a coronal radius of 3.6 ± 0.2 pc.
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