triple or artefacs?
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by sisifolibre
SDSS J161541.21+471111.7 = 4C 47.42 . Looking ADS I'm not sure if it is an BL Lacertae or QSO.
According this can be a giant, biggest than 2 Mpc, but also can be artefacts in both sides.
I think NVSS isn't conclusive...
Posted