Black Triangle Sighting in Chippenham, England on 2018-09-27 21:30:00 – Dark triangle with 3 white lights; one a thing each point of triangle. silently.

Just parked my car and looked up as it was a clear starry night and i like looking up at the stars. a large, black triangle with 3 lights, one at each point of the triangle went overhead. the object was silent. we live on a flight path for bristol airport but this object was flying perpendicular across the path. lights didn't flash and remained solid. even took place at 21:30 hours. initially thought was the iss but was too low and fast for that.