2 A B C D E F G H J K L M N O P R S T Y
Ta Th Tr

Translunar Injection

A trans-lunar injection (TLI) is a propulsive maneuver used to set a spacecraft on a trajectory that will cause it to arrive at the Moon.  Technically, a TLI is not one of the orbit types, rather a maneuver.   Typical lunar transfer trajectories approximate...