On Dec.13, about 16:45:30 UT, I happened to see a mag. -1 flash above eta UMa. I subsequently identified as coming from NOAA 12, #21263 1991 32 A. Today I was trying to see #05853 (decaying around Jan.15) with my unaided eyes on a bright dawn sky. At 06:43:30 UT, I saw a similar flash above eta UMa. Indeed it was NOAA 12 again, 4 days and 14 hours later, moving in the opposite direction! In this time, the Sun and -probably- a satellite's rotation axis have not changed more than a few degrees, so if the satellite passes the same sky area, the chance for flashes is large. Even though the geometry with respect to the Earth's surface, and the orbital longitude, is quite different, the observer-satellite-Sun angles are approximately the same, and this is what counts. I have seen this with other satellites too. ------------------------------------------------------------ -- bjorn.gimle@online.dextel.se +46-8-7428086 -- -- bjorn@tt-tech.se +46-8-59095739 -- --(bjorn.gimle@duesenberg.se) 59.22371 N, 18.22857 E -- ------------------------------------------------------------ =20