486958 Arrokoth (provisional designation 2014 MU69) is a trans-Neptunian object located in the Kuiper belt. It is a contact binary composed of two planetesimals, nicknamed "Ultima" and "Thule", that are joined along their major axes.  With the New Horizons space probe's flyby at 05:33 on 1 January 2019 (UTC time), Arrokoth became the farthest and most primitive object in the Solar System visited by a spacecraft. At the time of the New Horizons flyby, the object was unofficially nicknamed Ultima Thule.

(486958) Arrokoth

Cross-mission and cross-instrument searches for images and spectra from Cassini, Voyager 1 and 2, Galileo, New Horizons, and the Hubble Space Telescope

486958 Arrokoth Information Page

Derived 486958 Arrokoth Data