AS-105 (also referred to as SA-10) was the fifth and final orbital flight of a boilerplate Apollo spacecraft and the third and last launch of a Pegasus micrometeoroid detection satellite. It was launched on July 30, 1965. A planned thirty-minute hold ensured that the launch time aligned with the opening of the Pegasus launch window. The launch proceeded normally, and the payload was successfully inserted into orbit approximately 10.7 minutes after liftoff. The total mass placed in orbit, which included the spacecraft, the Pegasus satellite, the adapter, the instrument unit, and the S-IV stage, was 34,438 pounds (15,621 kg).
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The spacecraft separated 812 seconds after liftoff, with the separation and ejection system functioning as intended. The Pegasus 3 spacecraft, attached to the S-IV stage of the Saturn I and stored within the boilerplate service module, was deployed 40 seconds after the command was initiated, at 872 seconds. Pegasus 3 was a micrometeoroid detection satellite weighing 1,423.6 kilograms (3,138.6 pounds), securely bolted to the S-IV.
