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Stephenson 2 DFK 1, also known as RSGC2-01 [a] or St2-18, is a red supergiant (RSG) or possible extreme red hypergiant [2] (RHG) star in the constellation of Scutum.It lies near the open cluster Stephenson 2, which is located about 5.8 kiloparsecs (19,000 light-years) away from Earth in the Scutum–Centaurus Arm of the Milky Way galaxy, and is assumed to be one of a group of stars at a ...
The most luminous known asymptotic giant branch star. [18] Widely recognised as being among the largest known stars. [19] NML Cygni < 1,350 +195 −229 [c] AD Surrounding dusty region is very complex making the radius hard to determine. [20] Stephenson 2 DFK 2 1,300 ± 300 [10] L/T eff: Another red supergiant, Stephenson 2 DFK 1 has an ...
Stephenson 2, also known as RSGC2 (Red Supergiant Cluster 2), is a young massive open cluster belonging to the Milky Way galaxy. It was discovered in 1990 as a cluster of red supergiants in a photographic, deep infrared survey by the astronomer Charles Bruce Stephenson , after whom the cluster is named.
4.4 – 5.7 × 10 4 [18] Milky Way: Stephenson 2 (RSGC2) 4 ... List of largest star clusters; References External links. The young cluster RMC 136a European ...
List of the largest stars Star name Solar radii (Sun = 1) Method [a] Notes Stephenson 2-18: 2,158 [2] L/T eff: A red supergiant located within the massive open cluster Stephenson 2, where 25 other red supergiants are also located. An older estimate suggests a much smaller size of 474 R ☉ [3] HV 888 (WOH S140)
UY Scuti was analyzed to be the largest and the most luminous of the three stars measured, at 1,708 ± 192 R ☉ (1.188 × 10 9 ± 134,000,000 km; 7.94 ± 0.89 AU) based on an angular diameter of 5.48 ± 0.10 mas and an assumed distance of 2.9 ± 0.317 kiloparsecs (kpc) (about 9,500 ± 1,030 light-years) which was originally derived in 1970 ...
WOH G64 (IRAS 04553-6825) is a symbiotic binary in the Large Magellanic Cloud (LMC), roughly 160,000 light-years from Earth. The main component of this system was once recognized as the best candidate for the largest known star when it was a red supergiant, [7] until it gradually became a yellow hypergiant with half of its original size and 34% of its luminosity.
English: Size comparison of evolved red supergiant star Stephenson 2-18, extreme red hypergiant star VY Canis Majoris and luminous red supergiant star UY Scuti. Bahasa Indonesia: Perbandingan ukuran bintang super raksasa merah berevolusi Stephenson 2-18, bintang hypergiant merah ekstrim VY Canis Majoris dan bintang super raksasa merah bercahaya ...