If those are the elements (52x62 AU), then the eccentricity works out to about 0.08, which is resonably circular -- close enough to zero so that my toolkit of "near-circular approximations" would work just fine.
The question is, how do you get an orbit that circular with an inclination that high? It's hard to think of a "capture" scenario that would work; and it's likewise hard to think of a scenario where something huge knocked this guy out of the ecliptic plane. Either way, you'd expect to see a highly elliptical orbit -- something with an eccentricity over 0.5.
There'd have to be some long-term and regular perturbation to circularize it ... but what would it be?
:') Escape from orbit around something else? Or, it's been out there quite a while, and has had a few bumps, a brute force, monkeys and typewriters method, during encounters with other minor planets. Also, I think the article said it was an oblong piece of rock, so perhaps a very high early rotation rate altered the orbit to what is seen today (and therefore the rotation rate is low today).