The report said the Ariane-5 rocket cruised through clear skies from the Kourou launch center, 65 kilometers from the French Guiana capital of Cayenne.
The rocket's trajectory was controlled by two onboard computers.
Roughly seven seconds after ignition of the cryogenic engine, two solid-propellant boosters were ignited, enabling liftoff, the report said.
The rocket released Japan's JCSAT-10 telecom satellite into geostationary transfer orbit about 27 minutes after takeoff. The release of the Syracuse 3B satellite, for the French Ministry of Defense, followed five minutes later.