(636872) 2014 YX49

' (provisional designation ') is a centaur and Uranus co-orbital, approximately 77 km in diameter, first observed on December 26, 2014, by the Pan-STARRS survey. It is the second known centaur on a tadpole orbit with Uranus, and the fourth Uranus co-orbital discovered after 83982 Crantor, and.

Description
Centaur is a temporary  trojan of Uranus, the second one ( was identified first) to be confirmed as currently trapped in such a resonant state. This object may have remained as a Uranian Trojan for about 60,000 years and it can continue that way for another 80,000 years. Numerical integrations suggest that it may stay within Uranus' co-orbital zone for nearly one million years.

Besides being a Uranian trojan,  is trapped in the 7:20 mean motion resonance with Saturn as well; therefore, this minor body is currently subjected to a three-body resonance. The other known Uranian trojan,, is also in this resonant configuration.