A dwarf planet class object in the 21:5 resonance with Neptune

Matthew J. Holman, Matthew J. Payne, Wesley Fraser +33

We report the discovery of a $H_r=3.4\pm 0.1$ dwarf planet candidate by the Pan-STARRS Outer Solar System Survey. 2010 JO${}_{179}$ is red with $(g-r)=0.88\pm 0.21$, roughly round,…