Nebula
Bow-Tie Nebula
Planetary nebula · C2 · NGC 40
Planetary nebula in Cepheus
Photo: No machine-readable author provided. Klaus Hohmann assumed (based on copyright claims). · Public domain · Wikimedia Commons
NGC 40, also known as the Bow-Tie Nebula or Caldwell 2, is a planetary nebula located around 5280 light years from Earth in the Constellation of Cepheus. The nebula is about one light-year across. It was discovered by William Herschel on November 25, 1788.
Description from Wikipedia (CC BY-SA 4.0).
In your sky
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Key facts
Distance
~3,500 light-years
Apparent mag.
+11
Apparent size
0.8′
Best seen with
Telescope
Catalogue
C2 · NGC 40
Did you know
- Listed as Caldwell 2 in the Caldwell catalogue, also known as NGC 40.
- Found in the constellation Cepheus.
- Needs a telescope to see clearly.
