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I have been unable to find any information on the masses of the docking / berthing mechanisms used by the ISS. What are the masses of the APAS-95, Active / Passive Common Berthing Mechanism, and Russian probe / drogue docking systems? The best I can find is the mass of the PMA's, the lightest one is 1183 kg, which consists of a passive CBM + permanently passive APAS + additional structure.

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  • $\begingroup$ And it is going to get odd, since the NDS (Nasa Docking System) Dragon is bringing on SPX-7 or so is going to 'plug into' the current PMA so how do you count the mass then? Whole system? Each component? $\endgroup$
    – geoffc
    Feb 16, 2015 at 13:26

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Partial:

Apparently, APAS-95 had a mass of 286 kg

https://www.google.co.uk/books/edition/The_Twenty_first_Century_in_Space/BH7ZBQAAQBAJ?hl=en&gbpv=0

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