"Nearly 1000 TNOs known to inhabit the outer Solar System have been discovered by OSSOS (or earlier CFEPS)." - OSSOS http://www.ossos-survey.org/tnodb.html "Started in February 2013, OSSOS is a four-year project using the MegaPrime camera, a 1x1 degree imager on the 3.6m Canada-France-Hawaii Telescope (CFHT). The repeated tracking observations required to determine orbits are also obtained with the MegaPrime camera." - OSSOS http://www.ossos-survey.org/about.html Space.com has just published an announcement of a new TNO - 2015 RR245. http://www.space.com/33387-dwarf-planet-discovery-2015-rr245.html https://en.wikipedia.org/wiki/2015_RR245 Not much information on 2015 RR245. Its orbital period is ~700 years. Perihelion ~34 AU (next ~ 2096), aphelion ~120 AU. Back in 2011, Space.com published an article on Dwarf Planets. Meet the Solar System's Dwarf Planets http://www.space.com/12694-dwarf-planets-solar-system-tour-countdown.html By Mike Wall, Space.com Senior Writer | October 26, 2011 02:00pm ET In 2011, we had Pluto, Eris, Haumea, Makemake and Ceres By 2012, it was determined that Pluto has 5 moons: Charon, Styx, Nix, Kerberos, and Hydra. Styx was discovered 2012/06/26. Still a lot of research to be accomplished out there.