| J152421 I |  Barren | 0 | 2,620 km | -107°C | 0.21g | 0.453 AU |
| J152421 II |  Temperate | 1 | 4,090 km | 33°C | 0.24g | 0.732 AU |
| Moon | Radius | Temp | Gravity | Mass | Distance |
|---|
| J152421 II - Moon 1 | 210 km | -143°C | 0.01g | 3.7 × 10¹⁹ kg | 109,512,565 km |
|
| J152421 III |  Oceanic | 1 | 3,500 km | 81°C | 0.24g | 0.991 AU |
| Moon | Radius | Temp | Gravity | Mass | Distance |
|---|
| J152421 III - Moon 1 | 210 km | -162°C | 0g | 3.0 × 10¹⁹ kg | 148,324,106 km |
|
| J152421 IV |  Storm | 2 | 11,320 km | -126°C | 0.67g | 1.8 AU |
| Moon | Radius | Temp | Gravity | Mass | Distance |
|---|
| J152421 IV - Moon 1 | 380 km | -190°C | 0.01g | 1.9 × 10²⁰ kg | 269,279,609 km | | J152421 IV - Moon 2 | 780 km | -190°C | 0.03g | 2.3 × 10²¹ kg | 269,279,609 km |
|
| J152421 V | Oceanic | 1 | 6,120 km | 38°C | 0.99g | 2.643 AU |
| Moon | Radius | Temp | Gravity | Mass | Distance |
|---|
| J152421 V - Moon 1 | 350 km | -205°C | 0.01g | 1.3 × 10²⁰ kg | 395,320,295 km |
|
| J152421 VI |  Gas | 12 | 20,470 km | -222°C | 0.75g | 4.73 AU |
| Moon | Radius | Temp | Gravity | Mass | Distance |
|---|
| J152421 VI - Moon 1 | 140 km | -222°C | 0g | 5.6 × 10¹⁸ kg | 707,611,329 km | | J152421 VI - Moon 2 | 180 km | -222°C | 0g | 1.2 × 10¹⁹ kg | 707,611,329 km | | J152421 VI - Moon 3 | 190 km | -222°C | 0g | 1.5 × 10¹⁹ kg | 707,611,329 km | | J152421 VI - Moon 4 | 220 km | -222°C | 0g | 2.2 × 10¹⁹ kg | 707,611,329 km | | J152421 VI - Moon 5 | 380 km | -222°C | 0.01g | 1.5 × 10²⁰ kg | 707,611,329 km | | J152421 VI - Moon 6 | 380 km | -222°C | 0.01g | 1.4 × 10²⁰ kg | 707,611,329 km | | J152421 VI - Moon 7 | 730 km | -222°C | 0.02g | 1.4 × 10²¹ kg | 707,611,329 km | | J152421 VI - Moon 8 | 700 km | -222°C | 0.02g | 1.2 × 10²¹ kg | 707,611,329 km | | J152421 VI - Moon 9 | 850 km | -222°C | 0.02g | 2.3 × 10²¹ kg | 707,611,329 km | | J152421 VI - Moon 10 | 1,640 km | -222°C | 0.05g | 2.2 × 10²² kg | 707,611,329 km | | J152421 VI - Moon 11 | 990 km | -222°C | 0.03g | 3.9 × 10²¹ kg | 707,611,329 km | | J152421 VI - Moon 12 | 950 km | -222°C | 0.03g | 3.4 × 10²¹ kg | 707,611,329 km |
|
| J152421 VII | Gas | 5 | 14,250 km | -235°C | 0.72g | 8.511 AU |
| Moon | Radius | Temp | Gravity | Mass | Distance |
|---|
| J152421 VII - Moon 1 | 330 km | -235°C | 0g | 8.1 × 10¹⁹ kg | 1,273,266,438 km | | J152421 VII - Moon 2 | 370 km | -235°C | 0.01g | 1.1 × 10²⁰ kg | 1,273,266,438 km | | J152421 VII - Moon 3 | 1,160 km | -235°C | 0.03g | 5.6 × 10²¹ kg | 1,273,266,438 km | | J152421 VII - Moon 4 | 2,200 km | -235°C | 0.07g | 5.0 × 10²² kg | 1,273,266,438 km | | J152421 VII - Moon 5 | 740 km | -235°C | 0.01g | 1.2 × 10²¹ kg | 1,273,266,438 km |
|
| J152421 VIII | Temperate | 2 | 9,170 km | 16°C | 1.53g | 15.091 AU |
| Moon | Radius | Temp | Gravity | Mass | Distance |
|---|
| J152421 VIII - Moon 1 | 1,700 km | -245°C | 0.04g | 1.8 × 10²² kg | 2,257,516,757 km | | J152421 VIII - Moon 2 | 190 km | -245°C | 0g | 1.1 × 10¹⁹ kg | 2,257,516,757 km |
|