Brief flying irregular white circular object

There was an unknown object viewed last night that singular, circular and white.  It moved in an irregular pattern up and down while maintaining an overall west to east average linear movement.  It was moving perpendicular and irregular (not quite linear and slower by 20%) to that of the surrounding meteors from the leftovers of the Perseids meteor shower from the night before.  It was seen as if one was viewing north/northeast near the constellation Cassiopeia and Perseus.  Timing might be off for the exact time of the event, but it did not appear to be a meteor and was perpendicular to the shower as well as maintains an irregular, slightly slower and no entry tail.  I saw at least a dozen meteors last night and this one was very odd if I am to believe it was a meteor.  Almost as if some physics from it cutting across the sky perpendicular to the radiant viewing point of the meteor shower caused its brief illumination?  Not sure if it was just a different angle and rogue meteor of irregular features but didn’t know if it helps to report these things.