(126154) 2001 YH140 (provisional designation 2001 YH140) is a resonant trans-Neptunian object discovered on 18 December 2001, by American astronomers Chad Trujillo and Michael Brown at the Palomar Observatory in California.
[4] 2001 YH140 is locked in 3:5 mean-motion resonance with Neptune.
[5] In 2010 thermal flux from (126154) 2001 YH140 in the far-infrared was measured by the Herschel Space Telescope.
As a result, its size has been estimated to be 300–390 km (190–240 mi).
This article about a centaur (minor planet) or trans-Neptunian object is a stub.