Trans-Neptunian object
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A trans-Neptunian object, also written transneptunian object, is any minor planet in the Solar System that orbits the Sun at a greater average distance than Neptune, which has an orbital semi-major ax
Pluto, the first known TNO, imaged by New Horizons in 2015.
Looking back at Pluto, the largest visited KBO so far
Ceres RC3 Haulani Crater
Pluto
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Pluto is a dwarf planet in the Kuiper belt, a ring of bodies beyond the orbit of Neptune. It is the ninth-largest and tenth-most-massive known object to directly orbit the Sun. It is the largest known
Trans-Neptunian object
…took until 1992 to discover a second trans-Neptunian object orbiting the Sun directly, 15760 Albion. The most massive TNO known is Eris, followed by Pluto, Haumea, Makemake, and Gonggong. More than 80 satellites have been discovered in orbit of trans-Neptunian objects. TNOs vary in color and are either…
Clyde Tombaugh, in Kansas
Sputnik Planitia is covered with churning nitrogen ice "cells" that are geologically young and turning over due to convection.
A multispectral Visual Imaging Camera image of Pluto in enhanced color to bring out differences in surface composition
Regions where water ice has been detected (blue regions)