I did not render this model, I just softed and simplified to look less "poly", using the model aviable in the 3d Asteroid Catalogue site.
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.
Juno it is the biggest S type asteroid along with 15 Eunomia, it was the third asteroid to be discovered, because the great excentricity of its orbit, and its high reflectivity. S type asteroid are composed of siliceous rock. This material is the main component of the terrestrial planets, and some of the biggest moons in the Solar System. These moons are the Earth's one, Io and Europa; the rest of the big satellites (bigger than 200km) are usually considered "icy moons".
Orbit: Sun. Main Asteroid Belt.
Orbital period: 4.3646 yr.
Composition: Silicate. S type asteroid.
Density: 3.2 g/cm3.
Dimensions: 320 km × 267 km × 200 km.
Model scale: 1:2x106 (16cm) 1:4x106 (8cm)