This paper reports the discovery and orbital characterization of two extreme trans-Neptunian objects ( ETNOs ) , 2016 QV _ { 89 } and 2016 QU _ { 89 } , which have orbits that appear similar to that of a previously known object , 2013 UH _ { 15 } . All three ETNOs have semi-major axes a \approx 172 AU and eccentricities e \approx 0.77 . The angular elements ( i, \omega, \Omega ) vary by 6 , 15 , and 49 deg , respectively between the three objects . The two new objects add to the small number of TNOs currently known to have semi-major axes between 150 and 250 AU , and serve as an interesting dynamical laboratory to study the outer realm of our Solar System . Using a large ensemble of numerical integrations , we find that the orbits are expected to reside in close proximity in the ( a,e ) phase plane for roughly 100 Myr before diffusing to more separated values . We find that an explanation for the orbital configuration of the bodies as a collision product is disfavored . We then explore other scenarios that could influence their orbits . With aphelion distances over 300 AU , the orbits of these ETNOs extend far beyond the classical Kuiper Belt , and an order of magnitude beyond Neptune . As a result , their orbital dynamics can be affected by the proposed new Solar System member , referred to as Planet Nine in this work . With perihelion distances of 35 – 40 AU , these orbits are also influenced by resonant interactions with Neptune . A full assessment of any possible , new Solar System planets must thus take into account this emerging class of TNOs .