RE: USA 320-323

From: Eelke Visser via Seesat-l <seesat-l_at_satobs.org>
Date: Wed, 26 Jan 2022 13:34:21 +0000
We are probably missing TLEs for at least Easat-2 and Hades. Daniel EstÚvez did RF signal measurements on Delfi-PQ, Easat-2 and Hades using the Allen Telescope Array. Because both Easat-2 and Hades where not received, due to antenna problems. See https://destevez.net/2022/01/radiometry-for-delfi-pq-easat-2-and-hades/

Doppler analysis on the signals showed that all three satellites match good with 51074, which was assigned to Delfi-PQ. The other TLEs of this launch did not match, and therefore we think they are missing.

In addition all three satellites are pocket cubes. Delfi-PQ is a 3p measuring 15x5x5cm. Both Easat-2 and Hades are 1.5p, measuring 7.5x5x5cm. Maybe they get to small to be detected?

Best regards,

Eelke.

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Received on Wed Jan 26 2022 - 07:35:26 UTC

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