Update: The launch is on hold, as the range is reported not to be clear. The Coast Guard is attempting to contact a ship which has strayed into the harzard zone, the region where the solid rocket boosters may fall back into the ocean.
Update: The ship has cleared the hazard zone, and the launch will come out of hold at 07:30 EDT, for a scheduled launch at 07:34 EDT.
Update: At T + 1 minute 23 seconds we have the initial solid rocket booster separation of the first six boosters, and ignition of remain three boosters.
Update: At T + 11 minutes the spacecraft has successfully achieved its planned parking orbit with an apogee of 100.6 miles, perigee of 99.99 miles and inclination of 28.6 degrees.
Update: At T + 12 minutes the spacecraft has gone out of range of the Antigua tracking station. The next communications will come when it approaches the west coast of Australia.
Update: At T + 61 minutes 58 seconds the DAWN spacecraft has successfully separated from the Delta 2 third stage.