Tags: Planet.
2004 PR107 also written as 2004 PR107 is an asteroid in the asteroid belt with an absolute magnitude (H) of 17.8. It was discovered on August 11 2004 by Cerro Tololo Inter-American Observatory and then lost due to a lack of follow-up observations.With an observation arc of only 1 day (consisting of only 2 images) it was thought to be a trans-Neptunian object with a semi-major axis (a) of 46 AU. Mike Brown’s website listed it as a likely a dwarf planet with an estimated diameter of 555 km.