Abell cluster 840 (Galaxy cluster)
R/B-band color composite image from the Second Digitized Sky Survey (DSS2), measuring 30 arcminutes across.
From Fairfield , Abell cluster 840 is very well placed – it is close enough to the north celestial pole that it is high above the horizon all night.
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Name
Abell cluster 840
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Object type
Galaxy cluster
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Position
| Right ascension: | 09h47m [1] |
| Declination: | +78°42' [1] |
| Constellation: | Draco |
| Magnitude: | 17.30 (R) [1] |