| HZ-O18 I |  Lava | 1 | 3,700 km | 582°C | 0.56g | 0.91 AU |
| Moon | Radius | Temp | Gravity | Mass | Distance |
|---|
| HZ-O18 I - Moon 1 | 400 km | -144°C | 0.01g | 3.0 × 10²⁰ kg | 181,780 km |
|
| HZ-O18 II |  Temperate | 1 | 5,540 km | 28°C | 0.58g | 2.078 AU |
| Moon | Radius | Temp | Gravity | Mass | Distance |
|---|
| HZ-O18 II - Moon 1 | 690 km | -188°C | 0.02g | 1.6 × 10²¹ kg | 495,757 km |
|
| HZ-O18 III |  Storm | 1 | 5,510 km | -156°C | 0.49g | 3.328 AU |
| Moon | Radius | Temp | Gravity | Mass | Distance |
|---|
| HZ-O18 III - Moon 1 | 390 km | -206°C | 0.01g | 1.8 × 10²⁰ kg | 370,226 km |
|
| HZ-O18 IV |  Barren | 2 | 9,280 km | 30°C | 1.43g | 5.308 AU |
| Moon | Radius | Temp | Gravity | Mass | Distance |
|---|
| HZ-O18 IV - Moon 1 | 530 km | -220°C | 0.01g | 4.8 × 10²⁰ kg | 238,816 km | | HZ-O18 IV - Moon 2 | 1,420 km | -220°C | 0.05g | 1.4 × 10²² kg | 2,003,300 km |
|
| HZ-O18 V | Barren | 2 | 8,820 km | 45°C | 0.75g | 9.421 AU |
| Moon | Radius | Temp | Gravity | Mass | Distance |
|---|
| HZ-O18 V - Moon 1 | 640 km | -233°C | 0.01g | 7.5 × 10²⁰ kg | 445,400 km | | HZ-O18 V - Moon 2 | 1,700 km | -233°C | 0.05g | 2.2 × 10²² kg | 3,231,320 km |
|