Happened while watching ISS PASS I JUST SAW THE EXPLOSIVE END OF IT ABOUT 5 seconds. We were at our club Observatory. Looked like the Italian photo posted on your twitter site the day before. I didn't see it's trail if there was one, before the last 5 secs. About 5-10 deg to right of Jupiter but lower of course at about 45-50 deg down to 20 deg approx. I have seen many but this was the thickest and brightest since I saw and heard a bolide in the mid 60s. This had no sound at all. Only 2 out of 6 of us saw it! Very similar to photo posted on your site from Italy the day before?