ISS orbit was adjusted on April 29, 2014. According calculations of TSNIIMash Federal Unitary Enterprise MCC ballistic and navigational support service specialists Progress M-21M thrusters were ignited at 11.45, Moscow time and have been operating for 557 seconds. As a result of this reboost maneuver the station got the velocity increment of 1,22 m/s, orbit medium altitude increased by 2,1 km and amounted to 417,2 km.
According to MCC ballistic-navigational support service specialists upon the completions of the maneuver the ISS parameters are as follows:
Minimum altitude – 417,02 km;
Maximum altitude – 433,86 km;
Orbit time – 92,857 minutes;
Inclination – 51,67°
Station reboost maneuver was accomplished to prepare the station for Soyuz TMA-11M return to the Earth scheduled for May 14, 2014 and future Soyuz TMA-M spaceflight that will be launched from Baikonur spaceport on May 28, 2014.