Iridium Launch 4, 19 Aug 97, 00:50 UT 1 90000U 970xxA 97231.10813658 .00000027 00000-0 00000+0 0 11 2 90000 86.4020 41.9549 0014611 253.5528 277.4218 14.80129216 01 assumes Vandenberg AFB launch at 00:50 UT (19 Aug 97). This should be adequate to determine if it is visible. Allow a few minutes and a little cross-track error. Ron Lee