Hi Vitor, The best match I can find for your unidentified flare on 5 November ~22:14 UTC is Iridium 38. It shouldn't have flared-up, however, unless it was due to either the battery housing radiator or possibly a solar panel. Or, of course, if the orientation is bad on Iridium 38. Try running Iridium 38 through SkyMap and see if the trajectory was close to what you observed. --Rob