In the ideal case, the transfer is ballistic (requiring zero Delta-v) after launch.
A requirement for the spacecraft to carry fuel adds to its cost and complexity.
[2] Ballistic capture was first used by the Japanese spacecraft Hiten in 1991 as a method to get to the Moon.
The region about a target body where ballistic capture occurs is called a weak stability boundary.
[6] It can be performed anytime, not only once per 26 months as in other maneuvers and does not involve dangerous and expensive (fuel cost) braking.