вимірювання параметрів орбіти
equipment modification
equipment modification list
retrofit modification kit
modification program
certification modification
approved modification of aircraft
authorized modification
helicopter modification
modification
modification table of distribution and allowance
fixed-orbit satellite
velocity in final orbit
orbit insertion propulsion
orbit transfer propulsion
orbit-raising propulsion
earth-centered orbit
elliptical orbit
geostationary orbit
geosynchronous orbit
high-apogee orbit
orbit
orbit determination
orbit insertion burn
orbit-raising mission
satellite-filled orbit
stationary orbit
variable orbit
random orbit satellite
low earth orbit (LEO)
proliferated low Earth orbit (pLEO)