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KSLV 1 launch timeline
Posted: June 8, 2010

T-00:00 Liftoff
The Korea Space Launch Vehicle 1 lifts off from the new Naro Space Center in the South Jeolla province in the southwestern part of the country.
T+00:10 Pitch Maneuver
The KSLV 1's RD-151 main engine swivels to guide the 108-foot-tall rocket on a southerly course away from the South Korean coast.
T+00:55 Mach 1
The rocket passes the speed of sound 55 seconds after liftoff.
T+03:35 Fairing Jettison
After flying through the dense lower atmosphere, the KSLV 1 releases the payload shroud shielding the STSAT 2B spacecraft during the early minutes of the launch. At this point, the KSLV has soared to an altitude of 110 miles and is 152 miles south of the launch pad.
T+03:49 MECO
The Russian first stage completes its role in the KSLV 1's maiden launch and the kerosene-fueled RD-151 engine shuts down.
T+03:52 Stage Separation
The first and second stages of the KSLV 1 rocket separate about 200 miles downrange from the launch site. The second stage and STSAT 2B begin a 2 minute, 43 second ballistic phase during which the rocket will coast from an altitude of 122 miles to the injection point about 190 miles high.
T+06:35 2nd Stage Ignition
The solid-fueled second stage, developed in South Korea, ignites for a 58-second burn to accelerate the rocket to orbital velocity.
T+07:33 2nd Stage Cutoff
The KSLV 1 rocket's second stage finishes its firing and reaches orbit. Computers are targeting an orbit with a high point of 1,500 kilometers, or 932 miles, and a high point of about 300 kilometers, or 186 miles.
T+09:00 STSAT 2B Separation
The 219-pound STSAT 2B payload is deployed from the KSLV 1's second stage, completing South Korea's first orbital space launch.

Data source: KARI