NGC 1491 Emission nebula The nebula NGC 1491 Credit: Adam Block/Mount Lemmon SkyCenter/University of Arizona Observation data: J2000 epoch Subtype H II region Right ascension 04h 03m 15.9s[1] Declination +51° 18′ 54″[1] Constellation Perseus Designations Ced 25, LBN 704, LBN 706, Sharpless 2-206[1]