(613490) 2006 RJ103 is a Neptune trojan, first observed by the Sloan Digital Sky Survey Collaboration at Apache Point Observatory, New Mexico, on 12 September 2006.
These trojans have a semi-major axis and an orbital period very similar to Neptune's (30.10 AU; 164.8 years).
2006 RJ103 belongs to the leading L4 group, which follow 60° ahead Neptune's orbit.
[5] Based on a generic magnitude-to-diameter conversion, it measures approximately 130 kilometers in diameter using an absolute magnitude of 7.5 with an assumed albedo of 0.10.
[4] Due to its orbital uncertainty, this minor planet has not been numbered and its official discoverers have not been determined.