A trinary system with a close binary pair and a distant red dwarf
Stellar Bodies

- The Two Sisters (P) – 2253A (F3 yellow-white) & 2253B (K4 orange)
- Boiling Ball (P1) – a small molten rock orbiting at 0.61 AU
- Sunder (P2) – an incredibly unstable super-earth with two tiny moons, P2i & P2ii
- The Sisters’ Jewel (P3) – this sub-terran world experiences varying levels of radiation as its orbit oscillates between 3 and 3.5 AU. A single outpost called Home Base is located near the north pole
- P3i – a tiny, barren moon with an old solar-powered relay station at the northern pole
- The Cloud (P4) – this once-planet now looks like a large black cloud following an elliptical orbit over 20AU from the Two Sisters at its closest
- The Orphan – 2253C is an M-class red dwarf whose arrival in the distant past heralded the destruction of P4