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Detailed doppler measurements show that CAS 4A is object 42761, 2017-034D, and that CAS 4B is object 42759, 2017-034B.

Note that CAS 4A is also known as ZHUHAY-1 01 and as OVS 1A, and that CAS 4B is also known as ZHUHAY-1 02 and as OVS 1B.

Note that the IDs for CAS 4A and CAS 4B at Space-Track.org and at Celestrak are currently not correct.

73, Nico PA0DLO