Why optical sensors are not used along with radars for generating TLEs of LEO objects?

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From: John Gerrard via Seesat-l <seesat-l_at_satobs.org>
Date: Fri, 8 Sep 2017 18:49:30 +0000 (UTC)

Why optical sensors are not used along with radars for generating TLEs of LEO objects?
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Received on Fri Sep 08 2017 - 13:50:34 UTC

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