Abell cluster supplement 21 (Galaxy cluster)

R/B-band color composite image from the Second Digitized Sky Survey (DSS2), measuring 30 arcminutes across.

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From Cambridge , Abell cluster supplement 21 is not observable because it lies so far south that it never rises above the horizon.

Name Abell cluster supplement 21
Object type Galaxy cluster
Position
Right ascension:00h15m [1]
Declination:−84°04' [1]
Constellation:Octans
Magnitude:16.10 (R) [1]

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