First Sister (Kilian I)

The First Sister is the first planet of 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). A massive hot Jupiter streaked with green and yellow, it shares an orbit with two small protoplanets that sit in the L4 and L5 Lagrange points of the First Sister-Kilian system. Collectively, these three celestial bodies are known as the "Three sisters."