| J121516 I |  Lava | 0 | 1,870 km | 902°C | 0.18g | 0.265 AU |
| J121516 II |  Barren | 0 | 3,300 km | -67°C | 0.33g | 0.535 AU |
| J121516 III |  Temperate | 1 | 4,980 km | 5°C | 0.52g | 1.108 AU |
| Moon | Radius | Temp | Gravity | Mass | Distance |
|---|
| J121516 III - Moon 1 | 790 km | -130°C | 0.03g | 3.3 × 10²¹ kg | 165,700,108 km |
|
| J121516 IV | Barren | 0 | 1,980 km | -149°C | 0.25g | 1.476 AU |
| J121516 V | Barren | 1 | 6,220 km | 19°C | 0.6g | 1.795 AU |
| Moon | Radius | Temp | Gravity | Mass | Distance |
|---|
| J121516 V - Moon 1 | 810 km | -161°C | 0.03g | 3.0 × 10²¹ kg | 268,541,166 km |
|
| J121516 VI |  Plasma | 0 | 3,120 km | -178°C | 0.35g | 2.531 AU |
| J121516 VII |  Gas | 2 | 17,610 km | -199°C | 0.6g | 4.175 AU |
| Moon | Radius | Temp | Gravity | Mass | Distance |
|---|
| J121516 VII - Moon 1 | 590 km | -199°C | 0.02g | 8.2 × 10²⁰ kg | 624,591,241 km | | J121516 VII - Moon 2 | 1,300 km | -199°C | 0.05g | 1.2 × 10²² kg | 624,591,241 km |
|
| J121516 VIII | Gas | 5 | 16,910 km | -219°C | 0.89g | 7.634 AU |
| Moon | Radius | Temp | Gravity | Mass | Distance |
|---|
| J121516 VIII - Moon 1 | 280 km | -219°C | 0g | 5.6 × 10¹⁹ kg | 1,142,027,715 km | | J121516 VIII - Moon 2 | 340 km | -219°C | 0.01g | 1.1 × 10²⁰ kg | 1,142,027,715 km | | J121516 VIII - Moon 3 | 750 km | -219°C | 0.02g | 1.6 × 10²¹ kg | 1,142,027,715 km | | J121516 VIII - Moon 4 | 1,690 km | -219°C | 0.06g | 2.5 × 10²² kg | 1,142,027,715 km | | J121516 VIII - Moon 5 | 1,310 km | -219°C | 0.04g | 1.0 × 10²² kg | 1,142,027,715 km |
|
| J121516 IX |  Storm | 3 | 11,410 km | -101°C | 0.57g | 13.63 AU |
| Moon | Radius | Temp | Gravity | Mass | Distance |
|---|
| J121516 IX - Moon 1 | 260 km | -232°C | 0g | 3.7 × 10¹⁹ kg | 2,039,000,203 km | | J121516 IX - Moon 2 | 610 km | -232°C | 0.01g | 6.6 × 10²⁰ kg | 2,039,000,203 km | | J121516 IX - Moon 3 | 1,390 km | -232°C | 0.04g | 1.1 × 10²² kg | 2,039,000,203 km |
|