Do they mean to say that it's never completed a single orbit around the sun since the solar system was formed? Is it possible for an orbit around the sun to be that huge? I mean, just because we only observed it for the first time in 2012 doesn't mean it's never been to this part of th solar system before, or does it? I wouldn't know, but I'm struggling with the notion that there is a body that is in orbit around the sun that is yet to complete an orbit since the solar system was formed all those billions of years ago.