| J204039 I |  Barren | 1 | 2,980 km | -126°C | 0.14g | 0.73 AU |
| Moon | Radius | Temp | Gravity | Mass | Distance |
|---|
| J204039 I - Moon 1 | 120 km | -126°C | 0g | 5.9 × 10¹⁸ kg | 109,232,374 km |
|
| J204039 II |  Lava | 0 | 4,350 km | 1488°C | 0.68g | 1.539 AU |
| J204039 III |  Storm | 1 | 5,490 km | -54°C | 0.36g | 2.44 AU |
| Moon | Radius | Temp | Gravity | Mass | Distance |
|---|
| J204039 III - Moon 1 | 430 km | -193°C | 0.01g | 2.9 × 10²⁰ kg | 365,014,974 km |
|
| J204039 IV |  Gas | 3 | 13,500 km | -218°C | 0.75g | 5.181 AU |
| Moon | Radius | Temp | Gravity | Mass | Distance |
|---|
| J204039 IV - Moon 1 | 130 km | -218°C | 0g | 4.6 × 10¹⁸ kg | 775,082,344 km | | J204039 IV - Moon 2 | 820 km | -218°C | 0.02g | 2.1 × 10²¹ kg | 775,082,344 km | | J204039 IV - Moon 3 | 1,460 km | -218°C | 0.05g | 1.5 × 10²² kg | 775,082,344 km |
|
| J204039 V | Storm | 3 | 6,010 km | 16°C | 0.53g | 10.187 AU |
| Moon | Radius | Temp | Gravity | Mass | Distance |
|---|
| J204039 V - Moon 1 | 180 km | -234°C | 0g | 9.8 × 10¹⁸ kg | 1,523,904,807 km | | J204039 V - Moon 2 | 330 km | -234°C | 0g | 8.3 × 10¹⁹ kg | 1,523,904,807 km | | J204039 V - Moon 3 | 1,130 km | -234°C | 0.03g | 5.3 × 10²¹ kg | 1,523,904,807 km |
|