If it remained as bright as Venus for up to a minute,I am sure it would have been picked up by more professional surveys.
A minute is a long time for Meteors satellites or other normal things happening in the sky.
Supernova's and other type of star explosions don't just act like what you describe.
Gama Ray Bursts as bright as what you said this object was would have been picked by the dedicated space satellites such as "Swift"
As I said a good pair of binoculars come in handy at times like this..
One should always take a proper note of the time and other relevant
Data when things like this happen.
Cheers
