| BK4-YC I |  Barren | 0 | 1,840 km | -73°C | 0.18g | 0.264 AU |
| BK4-YC II | Barren | 0 | 2,350 km | -96°C | 0.35g | 0.335 AU |
| BK4-YC III | Barren | 0 | 3,640 km | -131°C | 0.2g | 0.524 AU |
| BK4-YC IV |  Storm | 1 | 9,250 km | -81°C | 0.72g | 1.354 AU |
| Moon | Radius | Temp | Gravity | Mass | Distance |
|---|
| BK4-YC IV - Moon 1 | 660 km | -185°C | 0.02g | 1.4 × 10²¹ kg | 298,786 km |
|
| BK4-YC V |  Gas | 16 | 25,420 km | -218°C | 0.77g | 3.431 AU |
| Moon | Radius | Temp | Gravity | Mass | Distance |
|---|
| BK4-YC V - Moon 1 | 190 km | -218°C | 0g | 1.5 × 10¹⁹ kg | 81,245 km | | BK4-YC V - Moon 2 | 130 km | -218°C | 0g | 4.6 × 10¹⁸ kg | 103,532 km | | BK4-YC V - Moon 3 | 170 km | -218°C | 0g | 1.1 × 10¹⁹ kg | 142,344 km | | BK4-YC V - Moon 4 | 380 km | -218°C | 0.01g | 1.6 × 10²⁰ kg | 165,793 km | | BK4-YC V - Moon 5 | 410 km | -218°C | 0.01g | 2.0 × 10²⁰ kg | 245,694 km | | BK4-YC V - Moon 6 | 590 km | -218°C | 0.01g | 6.9 × 10²⁰ kg | 328,205 km | | BK4-YC V - Moon 7 | 450 km | -218°C | 0.01g | 2.9 × 10²⁰ kg | 405,714 km | | BK4-YC V - Moon 8 | 480 km | -218°C | 0.01g | 3.4 × 10²⁰ kg | 500,368 km | | BK4-YC V - Moon 9 | 1,200 km | -218°C | 0.04g | 7.9 × 10²¹ kg | 729,897 km | | BK4-YC V - Moon 10 | 1,390 km | -218°C | 0.05g | 1.3 × 10²² kg | 1,124,040 km | | BK4-YC V - Moon 11 | 870 km | -218°C | 0.02g | 2.6 × 10²¹ kg | 1,539,360 km | | BK4-YC V - Moon 12 | 1,180 km | -218°C | 0.04g | 7.4 × 10²¹ kg | 1,817,660 km | | BK4-YC V - Moon 13 | 1,210 km | -218°C | 0.04g | 8.0 × 10²¹ kg | 2,242,670 km | | BK4-YC V - Moon 14 | 940 km | -218°C | 0.03g | 3.4 × 10²¹ kg | 2,695,990 km | | BK4-YC V - Moon 15 | 500 km | -218°C | 0.01g | 4.1 × 10²⁰ kg | 3,131,210 km | | BK4-YC V - Moon 16 | 640 km | -218°C | 0.02g | 9.4 × 10²⁰ kg | 3,596,610 km |
|
| BK4-YC VI | Gas | 4 | 13,920 km | -228°C | 0.55g | 5.258 AU |
| Moon | Radius | Temp | Gravity | Mass | Distance |
|---|
| BK4-YC VI - Moon 1 | 260 km | -228°C | 0g | 3.8 × 10¹⁹ kg | 125,843 km | | BK4-YC VI - Moon 2 | 450 km | -228°C | 0.01g | 2.4 × 10²⁰ kg | 345,917 km | | BK4-YC VI - Moon 3 | 1,220 km | -228°C | 0.03g | 7.4 × 10²¹ kg | 1,300,290 km | | BK4-YC VI - Moon 4 | 170 km | -228°C | 0g | 9.9 × 10¹⁸ kg | 4,443,230 km |
|
| BK4-YC VII | Gas | 9 | 18,330 km | -237°C | 1.39g | 8.016 AU |
| Moon | Radius | Temp | Gravity | Mass | Distance |
|---|
| BK4-YC VII - Moon 1 | 310 km | -237°C | 0g | 5.9 × 10¹⁹ kg | 124,163 km | | BK4-YC VII - Moon 2 | 450 km | -237°C | 0.01g | 2.2 × 10²⁰ kg | 239,957 km | | BK4-YC VII - Moon 3 | 650 km | -237°C | 0.01g | 7.8 × 10²⁰ kg | 392,136 km | | BK4-YC VII - Moon 4 | 300 km | -237°C | 0g | 5.6 × 10¹⁹ kg | 612,923 km | | BK4-YC VII - Moon 5 | 1,240 km | -237°C | 0.03g | 7.0 × 10²¹ kg | 843,010 km | | BK4-YC VII - Moon 6 | 1,560 km | -237°C | 0.04g | 1.5 × 10²² kg | 1,530,780 km | | BK4-YC VII - Moon 7 | 1,770 km | -237°C | 0.05g | 2.3 × 10²² kg | 2,612,410 km | | BK4-YC VII - Moon 8 | 2,480 km | -237°C | 0.08g | 7.4 × 10²² kg | 3,399,910 km | | BK4-YC VII - Moon 9 | 1,220 km | -237°C | 0.03g | 6.5 × 10²¹ kg | 5,182,020 km |
|
| BK4-YC VIII | Gas | 6 | 16,560 km | -248°C | 1.07g | 16.197 AU |
| Moon | Radius | Temp | Gravity | Mass | Distance |
|---|
| BK4-YC VIII - Moon 1 | 230 km | -248°C | 0g | 1.9 × 10¹⁹ kg | 149,280 km | | BK4-YC VIII - Moon 2 | 830 km | -248°C | 0.01g | 1.4 × 10²¹ kg | 484,773 km | | BK4-YC VIII - Moon 3 | 1,530 km | -248°C | 0.03g | 1.1 × 10²² kg | 1,251,310 km | | BK4-YC VIII - Moon 4 | 1,710 km | -248°C | 0.04g | 1.7 × 10²² kg | 2,225,220 km | | BK4-YC VIII - Moon 5 | 1,690 km | -248°C | 0.04g | 1.6 × 10²² kg | 3,898,560 km | | BK4-YC VIII - Moon 6 | 3,270 km | -248°C | 0.1g | 1.6 × 10²³ kg | 7,235,990 km |
|