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NGC 3556

Proper NameNone
Messier NumberM108
NGC/IC NumberNGC 3556
ConstellationUrsa Major
Right Ascension11h 11m 31s
Declination+55° 40' 27"
Distancec.39,100,000 light years
c.12,000,000 parsecs
MagnitudeApparent: +10.0
Absolute: -20.4
DiameterApparent: 8.6'
Actual: c.90,000 light years
Hubble TypeSc Spiral
Optimum VisibilityMarch (Usually visible from northern latitudes)
NotesAn outlying member of the Ursa Major Cluster, M108 is oriented almost edge-on to the Milky Way, and so appears as a narrow elliptical shape in the skies of Earth. Some sources classify it as a barred spiral rather than a simple Sc spiral galaxy.


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