Regarding Observation 14895793 …
Thanks to ChatGPT looks like some of my ISS observations had a doppler shift. I was figuring some old TLEs were being used with the 1.28 update.
Regarding Observation 14895793 …
Thanks to ChatGPT looks like some of my ISS observations had a doppler shift. I was figuring some old TLEs were being used with the 1.28 update.
Indeed there wasn’t any TLE update on 28th of August for ISS, so in combination with the boost you linked it resulted to this doppler shift. Nice catch!
Element-side confirmation of exactly that: the epochs I hold for 25544 jump from 08-27 12:44 UTC straight to 08-28 21:15 UTC — nothing in between, so observations on the 28th flew on a pre-boost element set. The current set (epoch 08-29 06:32 UTC) is post-boost.
The previous sets I hold are epoch 08-28 21:15 and 08-27 12:44.
So if your observation was scheduled against an element set from the 27th, that’s nearly two days of ISS drift, and a reboost in that window would move AOS by tens of seconds.
Worth re-checking against the 06:32 epoch.