Lucy is slated to launch in October 2021 to visit six Trojan asteroids and one asteroid in the main asteroid belt.
Lucy must launch during a 20-day window in October 2021 in order to carry out its planned trajectory of flybys of six Trojan asteroids and one main-belt asteroid.
NASA awarded the RLSP-35 Lucy launch contract to United Launch Alliance on 2019-01-31 at a total cost to the agency of $148,300,000.
Lucy is a Discovery-class planetary science mission selected in January 2017.
NASA selected two missions, Lucy and Psyche, in the Discovery competition that concluded in January 2017.