The Proton - R/B ( SSC 25545) shows in the last elsets (revs 102.0 & 103.7) a relatively steady behavior. MPM and SGP4 give this decay time Nov 27, 08:22 UTC +/- 25 min That is a northbound pass just around the equator crossing (08:33 UTC, -65.1°) By the way: In my last decay post was a misreading in respect to the Proton R/B equator crossing. Forget it! (The correct values: 04:12 UTC, 1.64°) MSTI 2: The last elset (98330.63486877)shows - in my opinion - a too large increase in drag over the last hours. So we have divergent decay times between SGP4 and MPM, about 12 hours. MPM gives now Nov 28, 18:37 UTC +/- 2 hours Harro Harro.Zimmer@t-online.de