|Center (RA, Dec):||(315.488, 68.148)|
|Center (RA, hms):||21h 01m 57.190s|
|Center (Dec, dms):||+68° 08' 52.188"|
|Size:||38.2 x 30.6 arcmin|
|Pixel scale:||0.873 arcsec/pixel|
|Orientation:||Up is 0.136 degrees E of N|
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. (wikipedia)