| J122931 I |  Barren | 0 | 1,890 km | -21°C | 0.17g | 0.269 AU |
| J122931 II | Barren | 0 | 3,630 km | -104°C | 0.38g | 0.598 AU |
| J122931 III | Barren | 1 | 4,560 km | 24°C | 0.74g | 1.047 AU |
| Moon | Radius | Temp | Gravity | Mass | Distance |
|---|
| J122931 III - Moon 1 | 520 km | -145°C | 0.02g | 7.2 × 10²⁰ kg | 156,597,158 km |
|
| J122931 IV |  Temperate | 1 | 10,370 km | 11°C | 1.19g | 2.218 AU |
| Moon | Radius | Temp | Gravity | Mass | Distance |
|---|
| J122931 IV - Moon 1 | 930 km | -185°C | 0.03g | 4.3 × 10²¹ kg | 331,770,003 km |
|
| J122931 V |  Storm | 0 | 4,700 km | -65°C | 0.39g | 3.101 AU |
| J122931 VI | Barren | 1 | 3,510 km | 86°C | 0.62g | 4.084 AU |
| Moon | Radius | Temp | Gravity | Mass | Distance |
|---|
| J122931 VI - Moon 1 | 190 km | -208°C | 0g | 1.5 × 10¹⁹ kg | 610,957,066 km |
|
| J122931 VII |  Gas | 10 | 18,970 km | -220°C | 1.31g | 6.088 AU |
| Moon | Radius | Temp | Gravity | Mass | Distance |
|---|
| J122931 VII - Moon 1 | 220 km | -220°C | 0g | 2.2 × 10¹⁹ kg | 910,799,143 km | | J122931 VII - Moon 2 | 210 km | -220°C | 0g | 2.1 × 10¹⁹ kg | 910,799,143 km | | J122931 VII - Moon 3 | 280 km | -220°C | 0g | 5.6 × 10¹⁹ kg | 910,799,143 km | | J122931 VII - Moon 4 | 720 km | -220°C | 0.02g | 1.4 × 10²¹ kg | 910,799,143 km | | J122931 VII - Moon 5 | 840 km | -220°C | 0.02g | 2.2 × 10²¹ kg | 910,799,143 km | | J122931 VII - Moon 6 | 1,090 km | -220°C | 0.03g | 5.4 × 10²¹ kg | 910,799,143 km | | J122931 VII - Moon 7 | 2,300 km | -220°C | 0.09g | 7.1 × 10²² kg | 910,799,143 km | | J122931 VII - Moon 8 | 720 km | -220°C | 0.02g | 1.3 × 10²¹ kg | 910,799,143 km | | J122931 VII - Moon 9 | 1,520 km | -220°C | 0.05g | 1.7 × 10²² kg | 910,799,143 km | | J122931 VII - Moon 10 | 980 km | -220°C | 0.03g | 3.8 × 10²¹ kg | 910,799,143 km |
|
| J122931 VIII | Gas | 9 | 17,980 km | -238°C | 0.82g | 13.758 AU |
| Moon | Radius | Temp | Gravity | Mass | Distance |
|---|
| J122931 VIII - Moon 1 | 180 km | -238°C | 0g | 1.0 × 10¹⁹ kg | 2,058,122,822 km | | J122931 VIII - Moon 2 | 330 km | -238°C | 0g | 7.6 × 10¹⁹ kg | 2,058,122,822 km | | J122931 VIII - Moon 3 | 430 km | -238°C | 0.01g | 1.9 × 10²⁰ kg | 2,058,122,822 km | | J122931 VIII - Moon 4 | 910 km | -238°C | 0.02g | 2.4 × 10²¹ kg | 2,058,122,822 km | | J122931 VIII - Moon 5 | 1,140 km | -238°C | 0.03g | 5.1 × 10²¹ kg | 2,058,122,822 km | | J122931 VIII - Moon 6 | 1,230 km | -238°C | 0.03g | 6.6 × 10²¹ kg | 2,058,122,822 km | | J122931 VIII - Moon 7 | 2,050 km | -238°C | 0.06g | 3.8 × 10²² kg | 2,058,122,822 km | | J122931 VIII - Moon 8 | 620 km | -238°C | 0.01g | 6.2 × 10²⁰ kg | 2,058,122,822 km | | J122931 VIII - Moon 9 | 180 km | -238°C | 0g | 1.0 × 10¹⁹ kg | 2,058,122,822 km |
|