2020 XL5 is a sub-kilometer near-Earth asteroid and suspected Earth trojan discovered by the Pan-STARRS 1 survey at Haleakala Observatory, Hawaii on 12 December 2020. In a corotating reference frame with Earth, 2020 XL5's path oscillates about the Sun–Earth L4 Lagrangian point (leading 60°), one of the dynamically stable locations where the combined gravitational force acts through the Sun's and Earth's barycenter. Analysis of 2020 XL5's trojan orbit stability suggests it will remain around Earth's L4 point for several thousand years until gravitational peturbations by Venus destabilize its trojan configuration. It is considered the second Earth trojan discovered, after 2010 TK7 in 2010.