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Sh 2-37

From Wikipedia, the free encyclopedia
Emission nebula
Sharpless 2-37
Emission nebula
H II region
As viewed in 2023
Observation data:epoch
Right ascension18h 18m 48s
Declination−19° 45′ 03″[1]
Distance5800[2] ly
Apparent magnitude (V)7.7[3]
Apparent dimensions (V)19.2' × 14.2'
ConstellationSagittarius
Physical characteristics
Radius34[4] ly
DesignationsGum 78,IC 1283/4,RCW 153,LBN 47
See also:Lists of nebulae

Sh 2-37, also known by the designationIC 1284, or the common nameTwiddlebug Nebula,[5] is anemission nebula in the constellationSagittarius. It is located is the direction of ionizing star cluster Dias 5. It also contains the radio source W 34.[6]

It is located near the center of the galaxy, and is partially obscured by dust. Nearby Sh 2-37, which appears mostly red, are two small bluereflection nebulae, known asNGC 6589 andNGC 6590.[7][8]SIMBAD notably provides the wrong coordinates for Sh 2-37, giving it the same coordinates as nearby NGC 6590.[9]

Discovery

[edit]

Sh 2-37 was discovered byEdward Emerson Barnard on a photographic plate on 31 May 1892. He initially described it as a 'nebulous star'.[10]


References

[edit]
  1. ^"IC 1283 - HII Ionized region in Sagittarius | TheSkyLive".
  2. ^"Around IC1283".
  3. ^"IC 1284 - Nebula in Sagittarius | TheSkyLive".
  4. ^"Around IC1283".
  5. ^"NGC 6589, VDB 118, GUM 78, HH 180 and IC 1283 - astrophotography by Stardoc".
  6. ^"Sh 2-37".
  7. ^"Sh2-37 - Nebula in Sagittarius".
  8. ^"New General Catalog Objects: NGC 6550 - 6599".
  9. ^"NGC 6589, NGC 6590, Ic 1283".
  10. ^"Galactic Nebula IC 1284 | Deep⋆Sky Corner".
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