Yes ,if the angle between the satellite ,earth and sun are correct you can have an increase to about magnitude -2. Nancy Hendrickson wrote: > Just saw a nice brightening of HST (app. 21:37 PDT). When first > spotted it was about a 4 magnitude, but for two seconds, it > brightened to about a 2 magnitude, then back to 4 as it crossed > below the moon, then into shadow. > > Nancy Hendrickson > San Diego, CA