2020 MK53

 is a trans-Neptunian object in the scattered disc, around 550 km in diameter. It was discovered on 22 June 2020 by the New Horizons KBO Search-Subaru survey using the 8.2-meter Subaru Telescope of the Mauna Kea Observatories in Hawaii, and announced on 7 April 2023 (MPS 1836391, MPO 735634). It was 160 astronomical units from the Sun when it was discovered, making it the farthest known Solar System object from the Sun, well ahead of (124 AU) and  (~132 AU). Given its very short data-arc the only reliable information is in its range ($156 AU$) and range-rate (−0.04 km/s), which suggests that it is close to its aphelion.