GRBAlpha re-entry

Yes, this one is perfect: SatNOGS Network - Observation 11739252

Still good: SatNOGS Network - Observation 11737297

Now nothing from Eastern Europe :frowning:

And nothing from South Africa: SatNOGS Network - Observation 11739737
vs earlier ones: SatNOGS Network - Observation 11732814
SatNOGS Network - Observation 11711732

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It looks like that the satellite has been re-entered. Nothing heard from the last pass over Europe.

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Nothing heard 22:50 - 23:20 UTC over KO33ru

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Yes… nothing from any nearby stations…

I think there’s a faint signal on 2025-06-09 05:00, was that from the satellite? Also, I think the doppler correction was off due to not using the latest TLE. Was there a way to manually updating the TLE?

Well, I mean for future observation and not this particular satellite as it (probably) has re-entered.

SatNOGS Network - Observation 11729105

Thx

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No signal on pass 2025-06-10 10:20 UTC.

Thanks for all of the support :slight_smile: GCN - Circulars - 40663 - GRBAlpha reentry on June 9, 2025

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The TLE sets are automatically updated (and in some cases like re-entries also manually) for future observations. However to avoid conflicts with other scheduled observations of the station, the start/end times remain the same. Usually this works fine as the TLE changes are not big ones, but there are cases with big changes and you may end up with part of the pass or totally out of the pass observations.

This is why I usually suggest in this big TLE changes, like re-entries or new launches, we avoid to schedule far in the future. However if you watch closely these TLE changes, then whenever happen, you can delete the observations you scheduled and re-schedule them.

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Ah, got it. I understand it now why you scheduled observations only on the next one or two pass, I thought I can help by plotting on the next three days :grin:. Thanks

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