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National UFO Reporting Center
Sighting Report
Occurred : 1/11/1999 17:47 (Entered as : 01/11/99 17:47)
Reported: 1/11/1999 19:09
Posted: 3/11/2003
Location: Danville, CA
Shape: Fireball
Duration:3-5 sec
Blue-green fireball with a tail to the NW headed down and to the west; appeared to be 13-17 miles away towards San Francisco Bay

I was headed north on I-680 at Sycamore Valley exit in Danville. In the NW, I saw a blue-green fireball with a tail descending at a steep angle (on a clockface it would have fallen through 7:00). It disappeared behind the hills above San Ramon Valley to the W and NW. The object was the size of a large star. With the arm outstretched and fingers on top and bottom of the tail, it would measure about 1 inch. It's light was about the same brightness as planes flying overhead. It was very visible though it was late dusk. (It was only slightly smaller and much brighter than Hale-Bopp appeared in the bay area.) My sense was that it was headed for the bay, which would have made it 13-17 miles away. I am a computer professional with no military nor pilot experience.