Complex sentence: Its orbit is extremely eccentric, with an aphelion estimated at 937 AU and a perihelion at about 76 AU, the largest perihelion of any known Solar System object until the discovery of.
Split into simpler sentences: Its orbit is extremely eccentric, with an aphelion estimated at 937 AU and a perihelion at about 76 AU. This perihelion is the largest of that of any known Solar System object until the discovery of.