Arrokoth scaled one in one million

prusaprinters

<p>I made this model mixing the stereographic model from the south face of Arrokoth from the supplementary material of Spencer (2020) and the shape model from Stern (2019) published in the 3D Asteroid catalogue, using MATLAB R2016a. The New Horizons probe made the flyby of the object on the new year of 2019, after visiting <a href="https://www.prusaprinters.org/prints/57250-pluto-and-charon-with-known-topography-scaled-one-">Pluto</a> system. The visible side when the probe flyby it, was the southern hemisphere by the right hand rule convention.</p><p>The file's names explained: <i>name_1_x_10_y.stl</i> is 1 : x* 10^y. So _1_6_10_7 is 1:600000000 or one in 60 million.&nbsp;</p><h4>486958 Arrokoth "Ultima Thule"</h4><p>Arrokoth (2014MU69) is the farthest object visited by an space probe, and the first one to be discovered after the launch of the probe, and not during the flyby, unlike <a href="https://www.prusaprinters.org/prints/57306-243-ida-scaled-one-in-one-million">Ida</a>'s moon Dactyl, or the Jupiter's moon <a href="https://www.thingiverse.com/thing:3691921">Thebe</a>, that were unknown before the approach to them. It is small for a Trans Neptunian Object, although being comparable in size with the biggest Near Earth Asteroids (like <a href="https://www.prusaprinters.org/prints/57315-433-eros-scaled-one-in-500-thousand">Eros</a>). This is because the observational bias, objects beyond the orbit of <a href="https://www.prusaprinters.org/prints/57330-neptune-scaled-one-in-250-million">Neptune</a> are more difficult to see because of the distance. It is one of the best example of a contact binary, composed of two flat parts. The bigger one is nicknamed "Ultima", seems to be composed of many smaller objects; and the other is called "Thule", that is likely to be a single wider object with at least one big crater (on the visible part). Like many <a href="https://www.prusaprinters.org/prints/57288-largest-tnos-and-their-moons-shapes-scaled-one-in-">other TNOs</a>, the surface of Arrokoth is expected to be relatively undisturbed since its accretion in the early Solar System.</p><ul><li><strong>Type:</strong> TNO. Qubewano.&nbsp;</li><li><strong>Orbit:</strong> Sun. Kuiper Belt.&nbsp;</li><li><strong>Orbital period:</strong> 298 yr.&nbsp;</li><li><strong>Composition:</strong> Icy body. Rubble pile. Contact binary.&nbsp;</li><li><strong>Density:</strong> ? g/cm3.</li><li><strong>Dimensions:</strong> 35 km × 22 km × 7 km.</li><li><strong>Model scale:</strong> 1:2x105 (17cm) 1:5x105 (7cm) 1:1x106 (3.5cm)</li></ul><h4>References</h4><ul><li><a href="https://science.sciencemag.org/content/364/6441/eaaw9771">Stern at al., Initial results from the New Horizons exploration of 2014 MU69, a small Kuiper Belt object, Science Vol. 364, Issue 6441, 2019.</a></li><li><a href="https://science.sciencemag.org/content/suppl/2020/02/12/science.aay3999.DC1">Supplementary Materials. The geology and geophysics of Kuiper Belt object (486958) Arrokoth J. R. Spencer 2020.</a></li><li><a href="https://www.mathworks.com/matlabcentral/fileexchange/4512-surf2stl">Surf to STL function for MATLAB&nbsp;</a></li></ul><h3><strong>Other astronomical objects</strong></h3><p><a href="https://www.prusaprinters.org/social/120859-tato_713/collections/49826">Inner Solar System</a></p><p><a href="https://www.prusaprinters.org/social/120859-tato_713/collections/49832">Artificial</a></p><p><a href="https://www.prusaprinters.org/social/120859-tato_713/collections/49820">Near Earth Asteroids</a></p><p><a href="https://www.prusaprinters.org/social/120859-tato_713/collections/49291">Main Belt Asteroids</a></p><p><a href="https://www.prusaprinters.org/social/120859-tato_713/collections/49829">Jovian System</a></p><p><a href="https://www.prusaprinters.org/social/120859-tato_713/collections/49828">Saturn System</a></p><p><a href="https://www.prusaprinters.org/social/120859-tato_713/collections/49830">Uranian System</a></p><p><a href="https://www.prusaprinters.org/social/120859-tato_713/collections/49345">Neptunian System</a></p><p><a href="https://www.prusaprinters.org/social/120859-tato_713/collections/49827">Centaurs</a></p><p><a href="https://www.prusaprinters.org/social/120859-tato_713/collections/49833">Comets</a></p><p><a href="https://www.prusaprinters.org/social/120859-tato_713/collections/49341">Trans Neptunian Objects</a></p><p><a href="https://www.prusaprinters.org/social/120859-tato_713/collections/49824">Extrasolar Objects</a></p><p><a href="https://www.prusaprinters.org/social/120859-tato_713/collections/49837">Sky Maps</a></p><p><a href="https://www.prusaprinters.org/social/120859-tato_713/collections/49831">Ancient</a></p><p><a href="https://www.prusaprinters.org/social/120859-tato_713/collections/49822">Speculative</a></p><p><a href="https://www.prusaprinters.org/social/120859-tato_713/collections/49821">Science Fiction</a></p>