Celestial hemisphere:  Northern  ·  Constellation: Cepheus (Cep)  ·  Contains:  Iris Nebula  ·  LBN 487  ·  LDN 1170  ·  LDN 1172  ·  LDN 1173  ·  LDN 1174  ·  NGC 7023  ·  VdB139
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NGC 7023 - Iris Nebula, Darius Kopriva
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NGC 7023 - Iris Nebula

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NGC 7023 - Iris Nebula, Darius Kopriva
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NGC 7023 - Iris Nebula

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Description

The Iris Nebula (also known as NGC 7023 and Caldwell 4) is a bright reflection nebula in the constellation Cepheus. The designation NGC 7023 refers to the open cluster within the larger reflection nebula designated LBN 487. The nebula, which shines at magnitude +6.8, is illuminated by a magnitude +7.4 star designated SAO 19158. It is located near the Mira-type variable star T Cephei, and near the bright magnitude +3.23 variable star Beta Cephei (Alfirk). It lies 1,300 light-years away and is six light-years across

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