I think I heard a delayed sound after the ball disappeare the time I gave you is an estimate not sure of the exact time it was much bigger appearing than a shooting star and seamed to last a long time i at first I noticed a green light wasent even looking at the sky at the time I checked down the road thinking it was a cars head lights after seeing no car I looked to the sky and saw the green ball it did have a trail at one point of me watching it if you have any further questions I can be reached at my email thanks