Tulip Nebula

Tulip Nebula
Type Emission
Right ascension 20h 00m 29.37s
Declination 35°19'13.9"
Distance 6,000 ly (1,800 pc)
Apparent magnitude (V) 9.0
Apparent dimensions (V) 16' x 9'
Constellation Cygnus
Physical characteristics
Radius -
Absolute magnitude (V) -
Notable features -
Other designations Sharpless 101
See also: Diffuse nebula, Lists of nebulae

The Tulip Nebula, or Sharpless 101 (Sh2-101) or the Cygnus Star Cloud is an emission nebula located in the constellation Cygnus. It is so named because it appears to resemble the outline of a tulip when imaged photographically. It was catalogued by astronomer Stewart Sharpless in his 1959 catalog of nebulae. It lies at a distance of about 6,000 light-years (5.7×1016 km; 3.5×1016 mi) from Earth.

The Tulip nebula, at least in the field seen from earth, is in close proximity to microquasar Cygnus X-1, site of one of the first suspected black holes. Cygnus X-1 is the brighter of the two stars (lower star) in close vertical proximity just to the right of the Tulip nebula in the image presented here.[1]

See also


External links

  • Sharpless Catalog