What was the first manned spacecraft to orbit another body ?
On March 23 , 1965 at 15:57:00 UTC , at the end of the first orbit , over Corpus Christi , Texas , a 1 minute 14 second burn of the orbit attitude and maneuvering system ( OAMS ) engines gave a delta - V of 15.5 meters per second ; which was the first orbital maneuver by any manned spacecraft .