Distant Solar System Objects identified in the Pan-STARRS1 survey
  We present a method to identify distant solar system objects in long-term wide-field asteroid survey data, and conduct a search for them in the Pan-STARRS1 (PS1) image data acquired from 2010 to mid-2015. We demonstrate that our method is able to find multi-opposition orbital links, and we present the resulting orbital distributions which consist of 154 Centaurs, 255 classical Trans-Neptunian Objects (TNOs), 121 resonant TNOs, 89 Scattered Disc Objects (SDOs) and 10 comets. Our results show more than half of these are new discoveries, including a newly discovered 19th magnitude TNO. Our identified objects do not show clustering in their argument of perihelia, which if present, might support the existence of a large unknown planetary-sized object in the outer solar system. 
R.J. Weryk, E. Lilly, S. Chastel, L. Denneau, R. Jedicke, E. Magnier,   R.J. Wainscoat, K. Chambers, H. Flewelling, M.E. Hub...
astro-ph.EP