A composite of two images taken by New Horizons' high-resolution Long-Range Reconnaissance Imager (LORRI), which provides the best indication of Ultima Thule's size and shape so far. Preliminary measurements of this Kuiper Belt object suggest it is approximately 20 miles long by 10 miles wide (32 kilometers by 16 kilometers).
<a href="https://en.wikipedia.org/wiki/NASA" class="extiw" title="w:NASA">National Aeronautics and Space Administration (NASA)</a>, <a href="https://en.wikipedia.org/wiki/Johns_Hopkins_University_Applied_Physics_Laboratory" class="extiw" title="w:Johns Hopkins University Applied Physics Laboratory">Johns Hopkins University Applied Physics Laboratory (JHUAPL)</a>, and <a href="https://en.wikipedia.org/wiki/Southwest_Research_Institute" class="extiw" title="w:Southwest Research Institute">Southwest Research Institute (SwRI)</a>
2018-12-31
"<a rel="nofollow" class="external text" href="http://pluto.jhuapl.edu/Galleries/Featured-Images/image.php?page=1&amp;gallery_id=2&amp;image_id=572">Detecting Ultima Thule's Size and Shape on Approach</a>"