| Jméno | NGC 3478 |
| Typ | GX [SBbc] |
| Další názvy | PGC33101 / UGC6069 |
| Souhvězdí | Ursa major |
| popis | The 2MASX position refers to a knot in the western arm. |
| RA | 10:59:27.4 |
| Dec | +46:07:23.0 |
| major_axis | 2.6' |
| minor_axis | 72.0'' |
| position_angle | 132.0 |
| mag | 12.9 |
| surface_bright | 13.9 |