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NGC 4559

Proper NameNone
Caldwell NumberC36
NGC/IC NumberNGC 4559
ConstellationComa Berenices
Right Ascension12h 35m 58s
Declination+27° 57' 36"
Distancec.22,900,000 light years
c.7,000,000 parsecs
MagnitudeApparent: +9.8
Absolute: -19.5
Mean DiameterApparent: 10.6'
Actual: c.72,000 light years
Hubble TypeSc Spiral or SABcd Intermediate Spiral
Optimum VisibilityApril
NoteThe spiral structure of this galaxy is complex, and some sources prefer to classify it as an intermediate spiral, or as a weakly barred spiral. Its distance is known with some accuracy because of a type II supernova - a 'standard candle' event - that occurred within C36 in the year 1941.

Imagery provided by Aladin sky atlas


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