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St / Stock — Jürgen Stock (open star clusters) (Stock 1 and 2 in, [38] Stock 3 to 23 in, [39] Stock 24 in [40]) Stone — Ormond Stone (double stars) Streicher — (telescopic asterisms) Stromlo — (for example: Stromlo 2 in Monoceros and Canis Major, at IC 2177; the 'Eagle Nebula') StWr — Stock-Wroblewski (planetary nebulae) Sw — Swift ...
NGC 7510 is an open cluster of stars located around 11,400 [2] light years away in the constellation Cepheus, near the border with Cassiopeia. [3] At this distance, the light from the cluster has undergone extinction from interstellar gas and dust equal to E(B – V) = 0.90 ± 0.02 magnitude in the UBV photometric system . [ 2 ]
Messier 50 or M 50, also known as NGC 2323 or the Heart-shaped Cluster, is an open cluster of stars in the constellation Monoceros. It was recorded by G. D. Cassini before 1711 and independently discovered by Charles Messier in 1772 [b] while observing Biela's Comet. It is sometimes described as a 'heart-shaped' figure or a blunt arrowhead. [3]
The compact open cluster NGC 2158 lies directly southwest of it. Leonard & Merritt (1989) computed the mass of M35 using a statistical technique based on proper motion velocities of its stars. The mass within the central 3.75 parsecs (12.2 ly) was found to be between 1600 and 3200 solar masses, [ b ] consistent with the mass of a realistic ...
NGC 1981 (also known as OCL 525) is an open cluster which is located in the constellation Orion. It was discovered by John Herschel on 4 January 1827. Its apparent magnitude is 4.2 [3] and its size is 28.00 arc minutes. It lies to the north of the Orion Nebula, separated from it by the Sh2-279 region containing NGC 1973, 1975, and 1977.
Messier 2 or M2 (also designated NGC 7089) is a globular cluster in the constellation Aquarius, five degrees north of the star Beta Aquarii. It was discovered by Jean-Dominique Maraldi in 1746, and is one of the largest known globular clusters.
NGC 2244 (also known as Caldwell 50 or the Satellite Cluster) is an open cluster in the Rosette Nebula, which is located in the constellation Monoceros. This cluster has several O-type stars, super hot stars that generate large amounts of radiation and stellar wind. The age of this cluster has been estimated to be less than 5 million years.
NGC 7789 (also known as Caroline's Rose, [4] Caroline's Haystack, [5] or the White Rose Cluster) is an open cluster in Cassiopeia that was discovered by Caroline Herschel in 1783. Her brother William Herschel included it in his catalog as H VI.30. This cluster is also known as the "White Rose" Cluster or "Caroline's Rose" Cluster because when ...