spotted bright object in clear night sky going slowly due NNW and disappearing in a fast graduating fashion.I left my apartment to visit someone and as i was warming up the car on a clear night, i looked up at the stars and suddenly noticed a brightly lit(white) object that was moving slowly NNW. I thought it might be a private, single engine plane but there was no sound of prop or engine and the light was unlike any i have seen on any aircraft(large or small). after three soconds it disappeared. i stood outside of my car for a few more minutes to see if the object would/might make a reappearance and after four minutes heard and saw a small jet airplane with pulsing lights( could not possibly have been this object)flying due south. a few minutes later , a single engine plane flew over my vacinity going west. would like to know if anyone else might have seen similar object as i have no one else around me who witnessed this with me. I have witnessed two other anomalies in the past few years, but this is the first one i have reported officially.