Umbriel with approximate topography scaled one in ten million

cults3d

This model is not based on a topographical map, there is not enough good images to make one, this is based on a high contrast polar map from the USGS site, from which the shadows where interpreted as slopes, so the model is something like an integration of the original one in the sphereical elevation coordinate. When the Voyager 2 probe reach Uranus, the system where pointing its north pole of rotation to the Sun. Sometimes, because the south pole or the south hemisphere are defined as the one pointing to the south of the Earth reference, and the right hand rule north pole is 98° tilted (8 degrees to the south), the then visible part is considered to be the south one. I prefer to follow the right hand rule for all my post, so the maped parts will be the north ones. The file's names explained: name_1_x_10_y.stl is 1 : x * 10y. So _1_6_10_7 is 1:600000000 or one in 60 million. U2 Umbriel Umbriel is the darkest of the moons of Uranus. It is full of craters like almost every bosy without an atmosphere. This means that it, and the rest of the moons of the Uranian System, were formed before the Late Heavy Bombardment. Type: Satellite. Orbit: Uranus Orbital period: 4.144 d. Composition: Icy body, differenciated interior, rocky mantle. Density: 1.39 g/cm3. Dimensions: 1169.4 km. Model scale: 1:1x107 (12cm) 1:2x107 (6cm) Referenceshttps://astrogeology.usgs.gov/search/map/Oberon/Nomenclature/umbriel_titania_oberon_I-1920_300dpiSurf to STL function for MATLAB Other astronomical objects Object Scale [1:x] K = 103 (thousand)M = 106 (million)G = 109 (billion) Image Inner Solar System Mercury 20M, 60M, 120M Venus 60M, 120M, 250M Earth 60M, 120M, 250M Luna 10M, 20M, 60M Mars 20M, 60M, 120M Phobos and Deimos 200K, 500K Artificial Salyut 7 40, 48, 80, 160 Near Earth Asteroids Moshup and Squannit 8K, 20K, 40K Ra-Shalom 20K, 40K Castalia 8K, 20K, 40K Bacchus 8K, 20K Bennu 3K, 8K Ryugu 3K, 8K, 20K Geographos 40K, 80K Phaethon 40K, 80K Itokawa 3K, 8K Eros 80K, 200K, 500K Nereus 3K, 8K Mithra 20K, 40K Golevka 8K Toutatis 40K, 80K Main Asteroid Belt Gaspra 200K Annefrank 40K, 80K Braille 20K, 40K Vesta 2M, 4M, 10M Šteins 40K, 80K, 200K Iris 2M, 4M Hebe 1M, 2M, 4M Lutetia 500K, 1M, 2M Julia 1M, 2M, 4M Mathilde 500K, 1M Juno 2M, 4M Ceres 4M, 10M Pallas 4M, 10M Kleopatra 2M, 4M Ida 500K, 1M </i