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NGC 2023 is an emission and reflection nebula in the equatorial constellation of Orion.It was discovered by the German-born astronomer William Herschel on 6 January 1785. This reflection nebula is one of the largest in the sky, [4] with a size of 10 × 10 arcminutes. [3]
The Orion Nebula (also known as Messier 42, ... In October 2023, astronomers, based on observations of the Orion Nebula with the James Webb Space Telescope, ...
The Orion A cloud has a mass in the order of 10 5 M ☉. [7] The stars in Orion A do not have the same distance to us. The "head" of the cloud, which also contains the Orion Nebula is about 1300 light-years (400 parsecs) away from the Sun. The "tail" however is up to 1530 light-years (470 parsecs) away from the Sun.
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2MASS J05352184-0546085, abbreviated to 2M0535-05 and also known by its variable star designation V2384 Orionis, is a young eclipsing binary brown dwarf system in the Orion Nebula, about 1,200 light-years (370 parsecs) away.
IC 2118 (also known as Witch Head Nebula due to its shape) is an extremely faint reflection nebula believed to be an ancient supernova remnant or gas cloud illuminated by nearby supergiant star Rigel in the constellation of Orion. The nebula lies in the Eridanus Constellation, [1] about 900 light-years from Earth. The nature of the dust ...
V883 Orionis is a protostar in the constellation of Orion. It is associated with IC 430 (Haro 13A), a peculiar Hα object surveyed by Guillermo Haro in 1952. [4] It is assumed to be a member of the Orion Nebula cluster at 414 ± 7 pc. [2] V883 Orionis, like most protostars, is surrounded by a circumstellar disc of dust.
The three stars of θ 2 Orionis within the Orion Nebula. θ 2 Orionis consists of three stars in a line, each about an arc-minute from the next. In addition to the well-known three stars, the Washington Double Star Catalog confusingly lists a component D which is actually θ 1 Orionis C.