C4 · nebula

Iris Nebula

The Iris Nebula is a bright reflection nebula located about 1,300 light years from Earth in the constellation of Cepheus.

RA21h 01m 35sDec+68° 10' 09"

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Identity & coordinates

Identification

Primary designation: C4
All designations: C4 · NGC 7023 · Iris Nebula
Object type: Nebula
Constellation: Cepheus
Best viewing: Autumn · Winter

Coordinates & physical

Right ascension (J2000): 21h 01m 35s
Declination (J2000): +68° 10' 09"
Apparent magnitude (V): —
Distance: —

III

Visibility tonight

The science

The Iris Nebula is a bright reflection nebula located about 1,300 light years from Earth in the constellation of Cepheus. It is six light-years across. The nebula is illuminated by a magnitude +7.4 star designated HD 200775. It is six light-years across. The nebula was discovered in 1794 by Sir William Herschel, a astronomer, where it was then added to the New General Catalogue (NGC).

Summary adapted from Wikipedia · CC-BY-SA-4.0