 UP Aerospace president Jerry Larson had said the rocket was assembled and had been on the launch rail since Tuesday (24 April).The primary payload, "Celestis Legacy", consisted of cremated human remains including those of astronaut Gordon Cooper and Star Trek actor James Doohan, whose ashes were also on board the ill-fated Falcon 1 when it malfunctioned in August 2008.As of 23 November 2019, UP Aerospace has conducted a total of 18 launches, including 13 with SpaceLoft XL rockets, most of which have been successful.