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Coma A

3C 277.3

Elliptical Galaxy in Coma Berenices

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Proper NameComa A
Messier NumberNone
NGC/IC NumberNone
Other Designations3C 277.3
ConstellationComa Berenices
Right Ascension12h 54m 12s
Declination+27° 37' 34"
Distancec.1,079,600,000 light years
c.331,000,000 parsecs
MagnitudeApparent: +20.88
Absolute: -16.72
DiameterApparent 0.2'
Actual c.75,000 light years
Hubble TypeE Elliptical
Optimum VisibilityApril
NotesSome sources list 'Coma A' as an identity of the giant galaxy NGC 4874, perhaps because that galaxy is also catalogued as 'Coma 1'. In fact the Coma A radio source is extremely faint in visible wavelengths, and does not have a registry in the New General Catalogue.

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