| BU-IU4 I |  Barren | 0 | 2,040 km | 64°C | 0.22g | 0.371 AU |
| BU-IU4 II | Barren | 0 | 1,830 km | 15°C | 0.12g | 0.507 AU |
| BU-IU4 III |  Lava | 1 | 5,990 km | 838°C | 0.74g | 1.149 AU |
| Moon | Radius | Temp | Gravity | Mass | Distance |
|---|
| BU-IU4 III - Moon 1 | 320 km | -82°C | 0.01g | 1.8 × 10²⁰ kg | 473,959 km |
|
| BU-IU4 IV |  Temperate | 1 | 5,770 km | 11°C | 0.58g | 2.135 AU |
| Moon | Radius | Temp | Gravity | Mass | Distance |
|---|
| BU-IU4 IV - Moon 1 | 170 km | -133°C | 0g | 1.8 × 10¹⁹ kg | 453,640 km |
|
| BU-IU4 V | Barren | 1 | 3,220 km | -160°C | 0.22g | 3.307 AU |
| Moon | Radius | Temp | Gravity | Mass | Distance |
|---|
| BU-IU4 V - Moon 1 | 190 km | -160°C | 0g | 2.4 × 10¹⁹ kg | 293,484 km |
|
| BU-IU4 VI |  Oceanic | 3 | 12,710 km | 40°C | 1.12g | 4.467 AU |
| Moon | Radius | Temp | Gravity | Mass | Distance |
|---|
| BU-IU4 VI - Moon 1 | 180 km | -176°C | 0g | 1.8 × 10¹⁹ kg | 114,218 km | | BU-IU4 VI - Moon 2 | 450 km | -176°C | 0.01g | 3.8 × 10²⁰ kg | 384,834 km | | BU-IU4 VI - Moon 3 | 880 km | -176°C | 0.03g | 3.7 × 10²¹ kg | 1,969,120 km |
|
| BU-IU4 VII |  Gas | 4 | 13,660 km | -202°C | 0.73g | 8.209 AU |
| Moon | Radius | Temp | Gravity | Mass | Distance |
|---|
| BU-IU4 VII - Moon 1 | 140 km | -202°C | 0g | 6.7 × 10¹⁸ kg | 71,819 km | | BU-IU4 VII - Moon 2 | 480 km | -202°C | 0.01g | 4.1 × 10²⁰ kg | 312,199 km | | BU-IU4 VII - Moon 3 | 1,260 km | -202°C | 0.05g | 1.1 × 10²² kg | 779,234 km | | BU-IU4 VII - Moon 4 | 1,230 km | -202°C | 0.04g | 9.8 × 10²¹ kg | 3,893,230 km |
|
| BU-IU4 VIII | Barren | 4 | 10,120 km | 30°C | 1.3g | 14.07 AU |
| Moon | Radius | Temp | Gravity | Mass | Distance |
|---|
| BU-IU4 VIII - Moon 1 | 180 km | -218°C | 0g | 1.2 × 10¹⁹ kg | 126,598 km | | BU-IU4 VIII - Moon 2 | 160 km | -218°C | 0g | 7.9 × 10¹⁸ kg | 497,255 km | | BU-IU4 VIII - Moon 3 | 1,530 km | -218°C | 0.05g | 1.8 × 10²² kg | 1,412,030 km | | BU-IU4 VIII - Moon 4 | 1,870 km | -218°C | 0.07g | 3.5 × 10²² kg | 8,430,070 km |
|