The SIMBAD database lists NGC 2708 as a Seyfert II galaxy,[3] i.e. a galaxy with a quasar-like nucleus with very high surface brightnesses whose spectra reveal strong, high-ionisation emission lines, but unlike quasars, the host galaxy is clearly detectable.
One supernova has been observed in NGC 2708: SN 2023bee (type Ia, mag. 17.3).[4]
According to A.M. Garcia, NGC 2708 is part of the four member NGC 2708 group (also known as LGG 164). The other three galaxies are: NGC 2695, NGC 2699, and NGC 2706.[5]