|Mission type||ISS resupply|
|Mission duration||121 days|
|Spacecraft||Progress MS-12 s/n 442|
|Launch mass||7392 kg |
|Payload mass||3434 kg|
|Start of mission|
|Launch date||31 July 2019, 12:10:46 UTC|
|Rocket||Soyuz-2.1a s/n N15000-035|
|Launch site||Baikonur, Site 31/6|
|Contractor||Progress Rocket Space Centre|
|End of mission|
|Decay date||29 November 2019, 14:19 UTC|
|Reference system||Geocentric orbit|
|Regime||Low Earth orbit|
|Docking with ISS|
|Docking date||31 July 2019, 15:29 UTC |
|Undocking date||29 November 2019 10:25 UTC |
|Time docked||121 days|
Progress MS-12 (Russian: Прогресс МC-12), Russian production No.442, identified by NASA as Progress 73P, was a Progress spacecraft used by Roscosmos to resupply the International Space Station (ISS). This is the 164th flight of a Progress spacecraft.
In 2014, the launch was planned for 1 July 2018, rescheduled for 5 June 2019 and rescheduled to 31 July 2019. The liftoff had been initially set for the two-day rendezvous profile with the station, but the launch time was later shifted to enable a two-orbit (three-hour) flight to the station.
Progress MS-12 docked with the Pirs docking module. The docking took place 3 hours 18 minutes 31 seconds into the mission (a new record time).
The Progress MS-12 spacecraft delivered 1,164 kg (2,566 lb) of dry cargo (in the cargo compartment).
The dry cargo consisted of:
The Progress MS-12 craft undocked from ISS on 29 November 2019 at 10:25 UTC, initiated braking maneuver at 13:39 UTC, re-entered Earth's atmosphere at 14:11 UTC (end of mission), with any remaining debris impacting a remote part of Pacific Ocean at 14:19 UTC.