(523622) 2007 TG422

(523622) 2007 TG422 (provisional designation 2007 TG422) is a trans-Neptunian object on a highly eccentric orbit in the scattered disc region at the edge of Solar System.

Approximately 260 kilometers (160 miles) in diameter, it was discovered on 3 October 2007 by astronomers Andrew Becker, Andrew Puckett and Jeremy Kubica during the Sloan Digital Sky Survey at Apache Point Observatory in New Mexico, United States.

[1] According to American astronomer Michael Brown, the bluish object is "possibly" a dwarf planet.

[7] It belongs to a group of objects studied in 2014, which led to the proposition of the hypothetical Planet Nine.

[7] According to the Johnston's archive and to Michael Brown, 2007 TG422 measures 222 and 331 kilometers in diameter, based on an absolute magnitude of 6.5 and an assumed standard albedo of 0.09 and 0.04 for the body's surface, respectively.

The orbits of Sedna , 2012 VP 113 , Leleākūhonua , and other very distant objects along with the predicted orbit of Planet Nine . The three sednoids (pink) along with the red-colored extreme trans-Neptunian object (eTNO) orbits are suspected to be aligned with the hypothetical Planet Nine while the blue-colored eTNO orbits are anti-aligned. The highly elongated orbits colored brown include centaurs and damocloids with large aphelion distances over 200 AU.