Scientists at the briefing said they're still not sure how Ultima Thule, nicknamed the "snowman" formed. They said even Ultima Thule is the informal name for what they know as "Kuiper Belt object 2014 MU69." This is what Ultima Thule would look like if it were placed against Pluto's nitrogen ice glacier called Sputnik. The spacecraft is now five million kilometres deeper into the Kuiper Belt than Ultima Thule, Stern said on Thursday. Stern has said that another target in the Kuiper Belt will likely be chosen for another flyby in the upcoming years.

Source: CBC News January 03, 2019 18:43 UTC