Op 9-3-2026 om 20:02 schreef E. Visser via Seesat-l: > This one is for our reentry specialists! A few nights ago a high flying unid was > detected. It is CZ-3B R/B [62805 25017B], that was a bit ahead of predictions. > Two nights later I happened to see it again, but much further off. It is in a > 120 x 7525 km orbit with 28.08 degree inclination. The perigee is very low. > According space track it will re-enter around April 3rd. The Space track TLE has > still not been updated. Hi Eelke a.o., Our TU Delft Tudat model currently forecasts reentry in the last days of March or early days of April, in line with Space Track: but with an upwards trend in the forecasts, so it might shift to mid April as well. Orbit updates are intermittent only, with long gaps of several days. Reentries from a very eccentric orbit like this are notoriously difficult to predict. The object experiences only brief moments of drag, even though its perigee is already low. - Marco ------ Dr Marco Langbroek Lecturer in optical Space Situational Awareness (SSA) TU Delft, Faculty of Aerospace Engineering section Astrodynamics and Space Missions ------ _______________________________________________ Seesat-l mailing list https://lists.seesatmail.org/mailman/listinfo/seesat-lReceived on Tue Mar 10 2026 - 07:31:13 UTC
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