Right ascension 21 01 35.60 Distance 1,300 ly Radius 3 ly Constellation Cepheus | Declination +68° 10′ 10.0" Apparent dimensions (V) 18' x 18' Magnitude 6.8 Apparent magnitude (V) 6.8 | |
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Designations NGC 7023 and LBN487, Caldwell 4 Similar IC 5146, NGC 7635, Crescent Nebula, Veil Nebula, North America Nebula | ||
Hubble zooms into the iris nebula 1080p
The Iris Nebula, also NGC 7023 and Caldwell 4, is a bright reflection nebula and Caldwell object in the constellation Cepheus. NGC 7023 is actually the cluster within the nebula, LBN 487, and the nebula is lit by a magnitude +7 star, SAO 19158. It shines at magnitude +6.8. It is located near the Mira-type variable star T Cephei, and near the bright magnitude +3.23 variable star Beta Cephei (Alphirk). It lies 1,300 light-years away and is six light-years across.
References
Iris Nebula Wikipedia(Text) CC BY-SA