(22149) 2000 WD₄₉ (provisional designation 2000 WD₄₉) is a Jupiter trojan from the Greek camp, approximately 50 kilometers (31 miles) in diameter. It was discovered on 21 November 2000, by astronomers with the Lincoln Near-Earth Asteroid Research at the Lincoln Lab's ETS near Socorro, New Mexico, in the United States.^[1] The dark Jovian asteroid belongs to the largest Jupiter trojans and has a rotation period of 7.84 hours.^[8] It has not been named since its numbering in February 2001.^[9]

2000 WD₄₉ is a dark Jovian asteroid in a 1:1 orbital resonance with Jupiter. It is located in the leading Greek camp at the Gas Giant's L₄ Lagrangian point, 60° ahead of its orbit (see Trojans in astronomy). It is also a non-family asteroid in the Jovian background population.^[4] It orbits the Sun at a distance of 4.9–5.4 AU once every 11 years and 9 months (4,280 days; semi-major axis of 5.16 AU). Its orbit has an eccentricity of 0.05 and an inclination of 21° with respect to the ecliptic.^[2] The body's observation arc begins with its first observation as 1994 NE₆ at the La Silla Observatory in July 1994, more than 6 years prior to its official discovery observation at Socorro.^[1]

This minor planet was numbered by the Minor Planet Center on 8 February 2001 (M.P.C. 42121).^[9] As of 2021^[update], it has not been named.^[1]

2000 WD₄₉ is an assumed, carbonaceous C-type asteroid.^[8] Most Jupiter trojans are D-types, with the reminder being mostly C and P-type asteroids. It has a high V–I color index of 1.090.^[8]