486958 Arrokoth

486958 Arrokoth, provisional designation , is a trans-Neptunian object located in the Kuiper belt. It is a contact binary long, made of two planetesimals and across, nicknamed "Ultima" and "Thule". The New Horizons team use this classical pronunciation, the pseudo-Latin pronunciation , and the hybrid pronunciation . The surface is made of pale red tholins, formed due to the surface being exposed to UV light.