Re: Flock 2B 2 (40951) Reentry Seen from Southern England, UK

From: William Stewart via Seesat-l <>
Date: Wed, 5 Oct 2016 08:11:40 +0100
Hi Adam,

Thanks for sharing. How frequently is the UHF ranging data collected and are you able to quantify how this compares with the radar data from

Both your data and that from Space-Track suggested that decay would occur a few hours later.

There has been an increase in auroral reports recently (which we tend to get around the time of the equinox - however recent activity appears to have
been higher and more prolonged than normal). Can the "early" decay be attributed to the "puffing up" of the atmosphere that occurs when solar activity
is high (not sure how the decay models take account of this ... is it an assumed "fixed" value or one than varies based on current data)?

Hope this question is "on topic".

Best regards

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Received on Wed Oct 05 2016 - 02:12:34 UTC

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