| J121749 I |  Barren | 0 | 2,690 km | -115°C | 0.21g | 0.577 AU |
| J121749 II |  Lava | 0 | 2,750 km | 1419°C | 0.45g | 0.901 AU |
| J121749 III | Barren | 1 | 4,050 km | -169°C | 0.3g | 1.34 AU |
| Moon | Radius | Temp | Gravity | Mass | Distance |
|---|
| J121749 III - Moon 1 | 330 km | -169°C | 0.01g | 1.3 × 10²⁰ kg | 200,406,254 km |
|
| J121749 IV | Lava | 2 | 4,150 km | 1428°C | 0.54g | 1.836 AU |
| Moon | Radius | Temp | Gravity | Mass | Distance |
|---|
| J121749 IV - Moon 1 | 140 km | -184°C | 0g | 7.4 × 10¹⁸ kg | 274,593,382 km | | J121749 IV - Moon 2 | 280 km | -184°C | 0.01g | 7.0 × 10¹⁹ kg | 274,593,382 km |
|
| J121749 V | Barren | 0 | 3,370 km | 425°C | 0.48g | 2.538 AU |
| J121749 VI |  Storm | 1 | 5,920 km | -163°C | 0.41g | 3.016 AU |
| Moon | Radius | Temp | Gravity | Mass | Distance |
|---|
| J121749 VI - Moon 1 | 850 km | -204°C | 0.03g | 2.8 × 10²¹ kg | 451,237,183 km |
|
| J121749 VII | Barren | 0 | 2,390 km | -69°C | 0.12g | 4.146 AU |
| J121749 VIII | Storm | 2 | 7,630 km | -112°C | 0.41g | 6.508 AU |
| Moon | Radius | Temp | Gravity | Mass | Distance |
|---|
| J121749 VIII - Moon 1 | 580 km | -226°C | 0.01g | 6.0 × 10²⁰ kg | 973,515,915 km | | J121749 VIII - Moon 2 | 1,170 km | -226°C | 0.03g | 6.6 × 10²¹ kg | 973,515,915 km |
|
| J121749 IX | Barren | 0 | 2,890 km | 422°C | 0.3g | 11.029 AU |