H0	Main Engine Ignition
The Vulcain 1 engine on the cryogenic main stage is started and undergoes computer checkout prior to launch.
H0+0:00:07.0	Solid Booster Ignition
The twin-solid rocket boosters attached to the cryogenic main stage are lit.
H0+0:00:07.3	Launch
The Ariane 5 rocket lifts off from ELA-3 complex at Guiana Space Center in Kourou, French Guiana, South America, to begin its 18th launch.
H0+0:00:13	Start Pitch Maneuver
Following a vertical ascent phase, the rocket begins a 19-second pitch rotation to achieve proper positioning for the climb through the atmosphere and flight downrange.
H0+0:02:20	Booster Separation
The solid-fuel rocket boosters have burned their propellant and are jettisoned at 66 km to fall into the Atlantic Ocean.
H0+0:03:13	Jettison Payload Fairing
The payload fairing that protected the Rosetta spacecraft during ascent through the atmosphere is separated at an altitude of 106 km.
H0+0:09:47	Main Stage Extinction
The Vulcain 1 main engine shuts down at an altitude of 169 km. Six seconds later, the spent main cryogenic stage separates to fall back to Earth, reentering over the Pacific Ocean from an orbit of 3,848.6 by 44.9 km inclined 5.670 degrees.
H0+1:07:00	Coast's Maximum Altitude Reached
The upper stage and Rosetta are on an extended ballistic coast prior to engine start. They reach the high point of the trajectory at 3,828 km and begin to swing back toward the planet.
H0+1:56:43	Upper Stage Ignition
The storable propellant stage, the upper stage of Ariane 5, begins firing to propel Rosetta on its comet mission at an altitude of 652 km.
H0+2:05:06	Minimum Altitude Reached
The lowest altitude of the upper stage burn is reached at 225 km. The altitude now begins to grow as the rocket and spacecraft move away from Earth.
H0+2:13:51	Upper Stage Shutdown
After completing its long-duration burn, the storable propellant stage shuts down at an altitude of 1,097 km.
H0+2:15:05	Rosetta Separation
The European Space Agency's Rosetta spacecraft is deployed for its 10-year voyage to rendezvous with 67P/Churyumov-Gerasimenk.

Data source: EADS.