NGC 1990

NGC 1990
Emission nebula
H II region
reflection nebula
Nebulosity near around Orion's Belt
Observation data: J2000 epoch
Right ascension05h 36m 16.2s
Declination−01° 12′ 07″
ConstellationOrion
See also: Lists of nebulae

NGC 1990 was discovered by William Herschel in 1786 with an 18.7 inch telescope. However, there is doubt that this object exists in reality as several visual searches and modern astrophotography have failed to identify the exact location and extent of the reflection nebula. Modern photographs of the area with cameras show ultraviolet leak that gives the false impression of a large blue nebula around ε Ori (Alnilam). More careful photography does not reveal a nebula in the area. Visual surveys do not reveal the nebula either.

References

  • "Simbad query". Retrieved October 5, 2009.
  • "The NGC/IC Project". Retrieved June 5, 2017.[permanent dead link‍]
  • Media related to NGC 1990 at Wikimedia Commons



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