Third Sister (Kilian III)

The Third Sister (Kilian III) is a protoplanet in the [Kilian system](https://robertsspaceindustries.com/galactapedia/article/0ODD4mY9aP-kilian-system), [United Empire of Earth (UEE)](https://robertsspaceindustries.com/galactapedia/article/VyvyKxy4v6-united-empire-of-earth) that orbits the system's sun in the L5 Lagrange point of the hot Jupiter [First Sister (Kilian I)](https://robertsspaceindustries.com/galactapedia/article/VlMMagKEzd-first-sister-kilian-i). Glittering patches of ice can be found dotted across its surface. Because the [UEE Navy](https://robertsspaceindustries.com/galactapedia/article/RPDvKOpdP4-uee-navy) utilizes the Third Sister as a testing ground for weapons, landing is prohibited without proper military clearance.