It has a retrograde orbit, and its orbit is highly inclined as well. You would have to fight against the Earth's orbit to catch up to it, and would have negligi

It has a retrograde orbit, and its orbit is highly inclined as well. You would have to fight against the Earth's orbit to catch up to it, and would have negligible opportunities for gravitational assists. Every probe to the outer solar system has leveraged multiple gravitational assists. These would be off the table. Basically your only options is building a super monster rocket and force your way to it based entirely on pure thrust. The rendezvous maneuver would be a monster as well. I'm not saying it's impossible, but you're probably looking at assembling something in orbit if you really want to go visit the thing.