(589683) 2010 RF43 (provisional designation 2010 RF43) is a large trans-Neptunian object orbiting in the scattered disc in the outermost regions of the Solar System.
The object was discovered on 9 September 2010, by American astronomers David Rabinowitz, Megan Schwamb and Suzanne Tourtellotte at ESO's La Silla Observatory in northern Chile.
[1] Due to its relatively high eccentricity and inclination, it is an object of the scattered disc rather than one of the regular Kuiper belt.
[1] Based on an absolute magnitude of 3.9,[3] and an assumed albedo of 0.09, the Johnston's archive estimates a mean diameter of approximately 770 kilometers (480 mi).
[4] The Collaborative Asteroid Lightcurve Link assumes an albedo of 0.10 and calculates a diameter of 636 kilometers (395 mi) based on an absolute magnitude of 4.1.