| J154021 I |  Barren | 1 | 3,550 km | -109°C | 0.32g | 0.48 AU |
| Moon | Radius | Temp | Gravity | Mass | Distance |
|---|
| J154021 I - Moon 1 | 270 km | -109°C | 0.01g | 9.2 × 10¹⁹ kg | 71,846,797 km |
|
| J154021 II |  Storm | 1 | 3,960 km | -151°C | 0.65g | 0.862 AU |
| Moon | Radius | Temp | Gravity | Mass | Distance |
|---|
| J154021 II - Moon 1 | 600 km | -151°C | 0.02g | 1.1 × 10²¹ kg | 128,960,446 km |
|
| J154021 III | Storm | 1 | 5,270 km | -168°C | 0.44g | 1.163 AU |
| Moon | Radius | Temp | Gravity | Mass | Distance |
|---|
| J154021 III - Moon 1 | 420 km | -168°C | 0.01g | 3.2 × 10²⁰ kg | 174,022,001 km |
|
| J154021 IV | Storm | 1 | 4,880 km | 72°C | 0.68g | 1.355 AU |
| Moon | Radius | Temp | Gravity | Mass | Distance |
|---|
| J154021 IV - Moon 1 | 130 km | -176°C | 0g | 6.3 × 10¹⁸ kg | 202,678,993 km |
|
| J154021 V |  Gas | 5 | 16,370 km | -207°C | 1.03g | 2.95 AU |
| Moon | Radius | Temp | Gravity | Mass | Distance |
|---|
| J154021 V - Moon 1 | 230 km | -207°C | 0g | 3.1 × 10¹⁹ kg | 441,360,515 km | | J154021 V - Moon 2 | 490 km | -207°C | 0.01g | 4.0 × 10²⁰ kg | 441,360,515 km | | J154021 V - Moon 3 | 530 km | -207°C | 0.01g | 5.5 × 10²⁰ kg | 441,360,515 km | | J154021 V - Moon 4 | 1,260 km | -207°C | 0.04g | 1.0 × 10²² kg | 441,360,515 km | | J154021 V - Moon 5 | 1,560 km | -207°C | 0.06g | 2.1 × 10²² kg | 441,360,515 km |
|
| J154021 VI | Gas | 8 | 19,570 km | -228°C | 1.29g | 6.355 AU |
| Moon | Radius | Temp | Gravity | Mass | Distance |
|---|
| J154021 VI - Moon 1 | 210 km | -228°C | 0g | 1.8 × 10¹⁹ kg | 950,677,602 km | | J154021 VI - Moon 2 | 420 km | -228°C | 0.01g | 1.9 × 10²⁰ kg | 950,677,602 km | | J154021 VI - Moon 3 | 610 km | -228°C | 0.01g | 6.9 × 10²⁰ kg | 950,677,602 km | | J154021 VI - Moon 4 | 700 km | -228°C | 0.02g | 1.1 × 10²¹ kg | 950,677,602 km | | J154021 VI - Moon 5 | 1,110 km | -228°C | 0.03g | 5.3 × 10²¹ kg | 950,677,602 km | | J154021 VI - Moon 6 | 1,770 km | -228°C | 0.06g | 2.6 × 10²² kg | 950,677,602 km | | J154021 VI - Moon 7 | 2,250 km | -228°C | 0.08g | 6.0 × 10²² kg | 950,677,602 km | | J154021 VI - Moon 8 | 1,080 km | -228°C | 0.03g | 4.9 × 10²¹ kg | 950,677,602 km |
|
| J154021 VII | Gas | 8 | 18,190 km | -241°C | 1.15g | 12.153 AU |
| Moon | Radius | Temp | Gravity | Mass | Distance |
|---|
| J154021 VII - Moon 1 | 140 km | -241°C | 0g | 4.4 × 10¹⁸ kg | 1,818,110,984 km | | J154021 VII - Moon 2 | 450 km | -241°C | 0.01g | 2.0 × 10²⁰ kg | 1,818,110,984 km | | J154021 VII - Moon 3 | 650 km | -241°C | 0.01g | 7.0 × 10²⁰ kg | 1,818,110,984 km | | J154021 VII - Moon 4 | 950 km | -241°C | 0.02g | 2.6 × 10²¹ kg | 1,818,110,984 km | | J154021 VII - Moon 5 | 1,240 km | -241°C | 0.03g | 6.4 × 10²¹ kg | 1,818,110,984 km | | J154021 VII - Moon 6 | 2,340 km | -241°C | 0.07g | 5.7 × 10²² kg | 1,818,110,984 km | | J154021 VII - Moon 7 | 1,670 km | -241°C | 0.04g | 1.8 × 10²² kg | 1,818,110,984 km | | J154021 VII - Moon 8 | 870 km | -241°C | 0.02g | 1.9 × 10²¹ kg | 1,818,110,984 km |
|
| J154021 VIII |  Temperate | 2 | 7,010 km | 10°C | 0.77g | 19.498 AU |
| Moon | Radius | Temp | Gravity | Mass | Distance |
|---|
| J154021 VIII - Moon 1 | 260 km | -247°C | 0g | 2.8 × 10¹⁹ kg | 2,916,852,957 km | | J154021 VIII - Moon 2 | 1,340 km | -247°C | 0.03g | 7.4 × 10²¹ kg | 2,916,852,957 km |
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