Although M101 and NGC 5866 are considered to be the two most likely candidates for M102, a few other objects have been suggested as potentially corresponding to this entry.
Huolimatta siitä, että sekä M101:n ja NGC 5866:n on ajateltu olevan kaksi mahdollisinta kandidaattia M102:lle, on olemassa muutamia muitakin ehdotuksia.