Sh 2-2

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Sh 2-2
Emission nebula
H II region
Sh2-2.jpg
Image of Sharpless 2
Observation data: J2000 epoch
Right ascension 17h 04m 06.6s [1]
Declination −38° 08′ 33″ [1]
Apparent dimensions (V)1° [1]
Constellation Scorpius
Designations Sh 2-2, Gum 57
See also: Lists of nebulae

Sh 2-2, also known as Sharpless 2, is an emission nebula in the constellation of Scorpius. It appears as a mid-range brightness making it difficult to view. It is believed to currently host an X-ray binary star that originated and was ejected from the Scorpius OB1 association. Amateur astronomers can usually see it with a wide field telescope and a hydrogen-alpha filter.

The nebulous area is fairly large with an irregular shape appearing as a H II region. [2] The remnant has an apparent diameter that covers approximately 60'. It is seen behind the open cluster NGC 6281. [3]

References

  1. 1 2 3 "VizieR Detailed Page". Centre de Données astronomiques de Strasbourg. 20 December 2013.
  2. ↑ "CCD Images of the Sharpless Catalog". Dean Salman. 20 December 2013.
  3. ↑ http://galaxymap.org/cat/view/sharpless/2
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