Today I report on three more Iridium observations from my site, including Iridium 27, Iridium 31, and an Iridium Delta R stage: In order of appearance: (1) The Iridium Delta Rocket stage (#24874, 97-34 F) made a near overhead pass (az 283 de, alt 79 deg) in the local evening twilight at UTC 16:24, height 276 km. It was seen mag +1.0 steady, surprisingly bright, as it was predicted to be somewhere in the mag +2 ranges. (2) Iridium 31 (#24950, 97-51 G) performed "an ordinary" flare show at UTC 16:43:36 (az 52 deg, alt 61 deg). Mirror angle was predicted to be 1.5 deg, with a mag 0.0 prediction from IRIDFLAR and a mag -2.0 prediction from the GSOC site in Darmstadt/Germany. What I really saw was estimated to be something in between, maybe mag -1 for one or two seconds. (3) The "strober" Iridium 27 (#24947, 97-51 D) sureley was the most exciting view of the three. As yesterday, the pass was nearly overhead, with az 96 deg and alt 88 deg at highest elevation. I found it with 7x35 binocs east of the Andromeda nebula, high over the southern horizon, and timed the following flash moments with my 100-lap-times stopwatch: UTC 16:51:27,05 UTC 16:51:30,64 UTC 16:51:34,17 UTC 16:51:37,76 UTC 16:51:41,37 UTC 16:51:44,94 UTC 16:51:48,55 UTC 16:51:52,08 UTC 16:51:55,74 UTC 16:51:59,29 UTC 16:52:02,86 UTC 16:52:06,54 These timings refine the flash period, measured to be 3.55 (+/- 0.05) seconds yesterday, to 3.59 (+/- 0.03) seconds this evening. The satellite was producing sharp, bright flashes in the mag +0.5 to +1.5 ranges, when I first spotted it, had one single very bright flash of maybe mag -2 (hard to estimate) near zenith, and then continued to flash sharply with magnitudes going down to somewhere around mag +3 when I lost it east of Polaris, where my home=B4s roof intervened.=20 =20 ------------------------------------------------ Alexander Seidel N53.5932 E9.4683 6m asl Stade/Germany Tel/Fax (+49) 4141 68772 ------------------------------------------------