New Horizons

Gave us the first close look at Pluto and at a pristine Kuiper Belt object, Arrokoth.

Its tracking also constrains unseen masses in the outer solar system. Model here is procedural (NASA's print model is STL only). The dashed trail joins Jupiter (2007) and Pluto (2015) (approximate path).

Sources

1. NASA: New Horizons
2. JPL Horizons ephemeris system

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