On August 15, 2019, two scheduled orbit corrections were carried out according to the International Space Station flight program.

The Progress MS-12 cargo spacecraft propulsion system docked to Pirs module was switched on at 05:53 UTC. The engines worked for 585 seconds, as a result the station got velocity increment by 0.58 m/s. At 08:55 UTC the freighter propulsion system was switched on for the second time, also for 585 seconds. As a result, the station received another velocity increment by 0.58 m/s.

According to the Mission Control Center data, after the two maneuvers the station has the following orbit parameters:

Minimal height over the Earth’s surface – 415.0 km;

Maximum height over the Earth’s surface – 428.7 km;

Rotation period – 92.82 min;

Orbit inclination – 51.66 deg.

Two separate correctional maneuvers to reach the necessary orbit ascent parameters were carried out to provide the technical conditions for the safe engine mode operation. As a result, the station got the necessary orbit ascent parameters, to provide for the Soyuz MS-14 ascent, approach and docking, as well as subsequent landing of the spacecraft.