T+45:00 Delta's signal will be acquired by a groundstation in South African. T+54:10 Second stage engine restart T+54:22 Second Stage Cutoff 2. The orbit should be 272.4 nautical miles at apogee, 266.2 miles at perigee and inclined 97.49 degrees. T+72:05 The second stage begins a nine-degree per second spin to stabilise the release of the WorldView 1 spacecraft. T+73:20 WorldView 1 Separation
Nose cone jettisoned. Second stage firing normally. The booster will use the Delta-7920-10C configuration and insert the payload into a 493 x 504-km sun-synchronous orbit with an inclination of 97.5°.