| J121856 I | Temperate | 1 | 6,330 km | 34°C | 1.09g | 0.863 AU |
| Moon | Radius | Temp | Gravity | Mass | Distance |
|---|
| J121856 I - Moon 1 | 400 km | -100°C | 0.01g | 3.4 × 10²⁰ kg | 129,110,376 km |
|
| J121856 II | Barren | 1 | 3,820 km | -128°C | 0.39g | 1.222 AU |
| Moon | Radius | Temp | Gravity | Mass | Distance |
|---|
| J121856 II - Moon 1 | 220 km | -128°C | 0.01g | 4.1 × 10¹⁹ kg | 182,758,605 km |
|
| J121856 III | Barren | 1 | 3,810 km | -142°C | 0.52g | 1.509 AU |
| Moon | Radius | Temp | Gravity | Mass | Distance |
|---|
| J121856 III - Moon 1 | 250 km | -142°C | 0.01g | 6.3 × 10¹⁹ kg | 225,782,694 km |
|
| J121856 IV | Barren | 2 | 11,520 km | 13°C | 1.13g | 1.891 AU |
| Moon | Radius | Temp | Gravity | Mass | Distance |
|---|
| J121856 IV - Moon 1 | 510 km | -156°C | 0.02g | 6.5 × 10²⁰ kg | 282,928,480 km | | J121856 IV - Moon 2 | 960 km | -156°C | 0.04g | 5.6 × 10²¹ kg | 282,928,480 km |
|
| J121856 V | Gas | 6 | 18,390 km | -189°C | 0.96g | 3.63 AU |
| Moon | Radius | Temp | Gravity | Mass | Distance |
|---|
| J121856 V - Moon 1 | 140 km | -189°C | 0g | 7.5 × 10¹⁸ kg | 542,979,752 km | | J121856 V - Moon 2 | 210 km | -189°C | 0g | 2.8 × 10¹⁹ kg | 542,979,752 km | | J121856 V - Moon 3 | 210 km | -189°C | 0g | 2.6 × 10¹⁹ kg | 542,979,752 km | | J121856 V - Moon 4 | 650 km | -189°C | 0.02g | 1.2 × 10²¹ kg | 542,979,752 km | | J121856 V - Moon 5 | 1,370 km | -189°C | 0.06g | 1.6 × 10²² kg | 542,979,752 km | | J121856 V - Moon 6 | 1,520 km | -189°C | 0.07g | 2.2 × 10²² kg | 542,979,752 km |
|
| J121856 VI | Gas | 4 | 14,530 km | -213°C | 0.66g | 7.097 AU |
| Moon | Radius | Temp | Gravity | Mass | Distance |
|---|
| J121856 VI - Moon 1 | 340 km | -213°C | 0.01g | 1.2 × 10²⁰ kg | 1,061,741,986 km | | J121856 VI - Moon 2 | 150 km | -213°C | 0g | 7.4 × 10¹⁸ kg | 1,061,741,986 km | | J121856 VI - Moon 3 | 1,760 km | -213°C | 0.07g | 3.0 × 10²² kg | 1,061,741,986 km | | J121856 VI - Moon 4 | 1,930 km | -213°C | 0.08g | 4.2 × 10²² kg | 1,061,741,986 km |
|
| J121856 VII | Gas | 6 | 17,090 km | -224°C | 1.04g | 10.563 AU |
| Moon | Radius | Temp | Gravity | Mass | Distance |
|---|
| J121856 VII - Moon 1 | 250 km | -224°C | 0g | 3.7 × 10¹⁹ kg | 1,580,170,084 km | | J121856 VII - Moon 2 | 650 km | -224°C | 0.01g | 8.9 × 10²⁰ kg | 1,580,170,084 km | | J121856 VII - Moon 3 | 680 km | -224°C | 0.02g | 1.0 × 10²¹ kg | 1,580,170,084 km | | J121856 VII - Moon 4 | 1,610 km | -224°C | 0.05g | 2.0 × 10²² kg | 1,580,170,084 km | | J121856 VII - Moon 5 | 990 km | -224°C | 0.03g | 3.8 × 10²¹ kg | 1,580,170,084 km | | J121856 VII - Moon 6 | 1,540 km | -224°C | 0.05g | 1.7 × 10²² kg | 1,580,170,084 km |
|
| J121856 VIII | Gas | 4 | 14,100 km | -234°C | 0.56g | 16.84 AU |
| Moon | Radius | Temp | Gravity | Mass | Distance |
|---|
| J121856 VIII - Moon 1 | 240 km | -234°C | 0g | 2.9 × 10¹⁹ kg | 2,519,280,124 km | | J121856 VIII - Moon 2 | 830 km | -234°C | 0.02g | 1.8 × 10²¹ kg | 2,519,280,124 km | | J121856 VIII - Moon 3 | 1,850 km | -234°C | 0.06g | 2.8 × 10²² kg | 2,519,280,124 km | | J121856 VIII - Moon 4 | 1,560 km | -234°C | 0.04g | 1.6 × 10²² kg | 2,519,280,124 km |
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