| J121941 I |  Plasma | 0 | 1,890 km | 32°C | 0.19g | 0.245 AU |
| J121941 II |  Lava | 1 | 2,270 km | 786°C | 0.32g | 0.445 AU |
| Moon | Radius | Temp | Gravity | Mass | Distance |
|---|
| J121941 II - Moon 1 | 170 km | -47°C | 0.01g | 2.5 × 10¹⁹ kg | 66,644,951 km |
|
| J121941 III |  Temperate | 1 | 5,120 km | 13°C | 0.55g | 0.788 AU |
| Moon | Radius | Temp | Gravity | Mass | Distance |
|---|
| J121941 III - Moon 1 | 640 km | -103°C | 0.03g | 1.7 × 10²¹ kg | 117,885,510 km |
|
| J121941 IV | Lava | 1 | 7,110 km | 1502°C | 0.76g | 1.314 AU |
| Moon | Radius | Temp | Gravity | Mass | Distance |
|---|
| J121941 IV - Moon 1 | 1,030 km | -142°C | 0.05g | 7.5 × 10²¹ kg | 196,630,594 km |
|
| J121941 V |  Gas | 11 | 21,030 km | -181°C | 1.35g | 2.681 AU |
| Moon | Radius | Temp | Gravity | Mass | Distance |
|---|
| J121941 V - Moon 1 | 250 km | -181°C | 0.01g | 4.8 × 10¹⁹ kg | 401,009,181 km | | J121941 V - Moon 2 | 240 km | -181°C | 0g | 4.2 × 10¹⁹ kg | 401,009,181 km | | J121941 V - Moon 3 | 250 km | -181°C | 0.01g | 4.8 × 10¹⁹ kg | 401,009,181 km | | J121941 V - Moon 4 | 380 km | -181°C | 0.01g | 2.2 × 10²⁰ kg | 401,009,181 km | | J121941 V - Moon 5 | 710 km | -181°C | 0.02g | 1.7 × 10²¹ kg | 401,009,181 km | | J121941 V - Moon 6 | 900 km | -181°C | 0.03g | 3.9 × 10²¹ kg | 401,009,181 km | | J121941 V - Moon 7 | 1,300 km | -181°C | 0.05g | 1.4 × 10²² kg | 401,009,181 km | | J121941 V - Moon 8 | 620 km | -181°C | 0.02g | 1.1 × 10²¹ kg | 401,009,181 km | | J121941 V - Moon 9 | 1,450 km | -181°C | 0.06g | 2.0 × 10²² kg | 401,009,181 km | | J121941 V - Moon 10 | 910 km | -181°C | 0.03g | 4.0 × 10²¹ kg | 401,009,181 km | | J121941 V - Moon 11 | 720 km | -181°C | 0.02g | 1.8 × 10²¹ kg | 401,009,181 km |
|
| J121941 VI | Gas | 11 | 22,690 km | -211°C | 0.8g | 5.817 AU |
| Moon | Radius | Temp | Gravity | Mass | Distance |
|---|
| J121941 VI - Moon 1 | 190 km | -211°C | 0g | 1.5 × 10¹⁹ kg | 870,193,562 km | | J121941 VI - Moon 2 | 260 km | -211°C | 0g | 4.6 × 10¹⁹ kg | 870,193,562 km | | J121941 VI - Moon 3 | 170 km | -211°C | 0g | 1.0 × 10¹⁹ kg | 870,193,562 km | | J121941 VI - Moon 4 | 470 km | -211°C | 0.01g | 3.5 × 10²⁰ kg | 870,193,562 km | | J121941 VI - Moon 5 | 890 km | -211°C | 0.03g | 3.0 × 10²¹ kg | 870,193,562 km | | J121941 VI - Moon 6 | 1,000 km | -211°C | 0.03g | 4.5 × 10²¹ kg | 870,193,562 km | | J121941 VI - Moon 7 | 1,220 km | -211°C | 0.04g | 8.9 × 10²¹ kg | 870,193,562 km | | J121941 VI - Moon 8 | 1,140 km | -211°C | 0.04g | 7.0 × 10²¹ kg | 870,193,562 km | | J121941 VI - Moon 9 | 150 km | -211°C | 0g | 8.1 × 10¹⁸ kg | 870,193,562 km | | J121941 VI - Moon 10 | 720 km | -211°C | 0.02g | 1.5 × 10²¹ kg | 870,193,562 km | | J121941 VI - Moon 11 | 520 km | -211°C | 0.01g | 4.9 × 10²⁰ kg | 870,193,562 km |
|
| J121941 VII | Gas | 19 | 27,940 km | -227°C | 1.88g | 10.73 AU |
| Moon | Radius | Temp | Gravity | Mass | Distance |
|---|
| J121941 VII - Moon 1 | 170 km | -227°C | 0g | 9.4 × 10¹⁸ kg | 1,605,230,395 km | | J121941 VII - Moon 2 | 250 km | -227°C | 0g | 3.3 × 10¹⁹ kg | 1,605,230,395 km | | J121941 VII - Moon 3 | 170 km | -227°C | 0g | 1.0 × 10¹⁹ kg | 1,605,230,395 km | | J121941 VII - Moon 4 | 300 km | -227°C | 0g | 6.1 × 10¹⁹ kg | 1,605,230,395 km | | J121941 VII - Moon 5 | 500 km | -227°C | 0.01g | 3.5 × 10²⁰ kg | 1,605,230,395 km | | J121941 VII - Moon 6 | 220 km | -227°C | 0g | 2.2 × 10¹⁹ kg | 1,605,230,395 km | | J121941 VII - Moon 7 | 690 km | -227°C | 0.01g | 1.1 × 10²¹ kg | 1,605,230,395 km | | J121941 VII - Moon 8 | 330 km | -227°C | 0.01g | 8.3 × 10¹⁹ kg | 1,605,230,395 km | | J121941 VII - Moon 9 | 690 km | -227°C | 0.02g | 1.1 × 10²¹ kg | 1,605,230,395 km | | J121941 VII - Moon 10 | 1,150 km | -227°C | 0.03g | 6.0 × 10²¹ kg | 1,605,230,395 km | | J121941 VII - Moon 11 | 740 km | -227°C | 0.02g | 1.4 × 10²¹ kg | 1,605,230,395 km | | J121941 VII - Moon 12 | 1,820 km | -227°C | 0.06g | 2.9 × 10²² kg | 1,605,230,395 km | | J121941 VII - Moon 13 | 1,680 km | -227°C | 0.05g | 2.2 × 10²² kg | 1,605,230,395 km | | J121941 VII - Moon 14 | 2,180 km | -227°C | 0.08g | 5.4 × 10²² kg | 1,605,230,395 km | | J121941 VII - Moon 15 | 950 km | -227°C | 0.02g | 3.2 × 10²¹ kg | 1,605,230,395 km | | J121941 VII - Moon 16 | 2,600 km | -227°C | 0.1g | 10.0 × 10²² kg | 1,605,230,395 km | | J121941 VII - Moon 17 | 2,110 km | -227°C | 0.07g | 4.9 × 10²² kg | 1,605,230,395 km | | J121941 VII - Moon 18 | 330 km | -227°C | 0.01g | 8.4 × 10¹⁹ kg | 1,605,230,395 km | | J121941 VII - Moon 19 | 410 km | -227°C | 0.01g | 1.8 × 10²⁰ kg | 1,605,230,395 km |
|
| J121941 VIII |  Ice | 9 | 20,090 km | -243°C | 1.01g | 25.681 AU |
| Moon | Radius | Temp | Gravity | Mass | Distance |
|---|
| J121941 VIII - Moon 1 | 210 km | -243°C | 0g | 1.5 × 10¹⁹ kg | 3,841,863,713 km | | J121941 VIII - Moon 2 | 430 km | -243°C | 0.01g | 1.7 × 10²⁰ kg | 3,841,863,713 km | | J121941 VIII - Moon 3 | 550 km | -243°C | 0.01g | 3.9 × 10²⁰ kg | 3,841,863,713 km | | J121941 VIII - Moon 4 | 920 km | -243°C | 0.02g | 2.2 × 10²¹ kg | 3,841,863,713 km | | J121941 VIII - Moon 5 | 1,220 km | -243°C | 0.03g | 5.8 × 10²¹ kg | 3,841,863,713 km | | J121941 VIII - Moon 6 | 750 km | -243°C | 0.01g | 1.1 × 10²¹ kg | 3,841,863,713 km | | J121941 VIII - Moon 7 | 3,790 km | -243°C | 0.13g | 2.8 × 10²³ kg | 3,841,863,713 km | | J121941 VIII - Moon 8 | 2,690 km | -243°C | 0.08g | 8.7 × 10²² kg | 3,841,863,713 km | | J121941 VIII - Moon 9 | 2,020 km | -243°C | 0.05g | 3.3 × 10²² kg | 3,841,863,713 km |
|