| U2-28D I |  Barren | 0 | 1,790 km | 92°C | 0.11g | 0.201 AU |
| U2-28D II | Barren | 1 | 3,600 km | -43°C | 0.62g | 0.506 AU |
| Moon | Radius | Temp | Gravity | Mass | Distance |
|---|
| U2-28D II - Moon 1 | 210 km | -43°C | 0.01g | 4.8 × 10¹⁹ kg | 105,280 km |
|
| U2-28D III |  Lava | 1 | 4,730 km | 569°C | 0.51g | 0.832 AU |
| Moon | Radius | Temp | Gravity | Mass | Distance |
|---|
| U2-28D III - Moon 1 | 250 km | -94°C | 0.01g | 7.6 × 10¹⁹ kg | 223,831 km |
|
| U2-28D IV |  Plasma | 1 | 3,270 km | -104°C | 0.47g | 0.932 AU |
| Moon | Radius | Temp | Gravity | Mass | Distance |
|---|
| U2-28D IV - Moon 1 | 450 km | -104°C | 0.02g | 5.3 × 10²⁰ kg | 263,789 km |
|
| U2-28D V | Barren | 0 | 3,730 km | -131°C | 0.56g | 1.331 AU |
| U2-28D VI |  Gas | 4 | 13,990 km | -162°C | 1.03g | 2.166 AU |
| Moon | Radius | Temp | Gravity | Mass | Distance |
|---|
| U2-28D VI - Moon 1 | 280 km | -162°C | 0.01g | 8.8 × 10¹⁹ kg | 97,342 km | | U2-28D VI - Moon 2 | 280 km | -162°C | 0.01g | 8.0 × 10¹⁹ kg | 309,976 km | | U2-28D VI - Moon 3 | 1,280 km | -162°C | 0.06g | 1.5 × 10²² kg | 704,988 km | | U2-28D VI - Moon 4 | 170 km | -162°C | 0g | 1.7 × 10¹⁹ kg | 1,443,140 km |
|
| U2-28D VII |  Storm | 1 | 6,800 km | -84°C | 0.58g | 3.223 AU |
| Moon | Radius | Temp | Gravity | Mass | Distance |
|---|
| U2-28D VII - Moon 1 | 1,200 km | -182°C | 0.05g | 1.0 × 10²² kg | 1,157,740 km |
|
| U2-28D VIII | Gas | 5 | 17,090 km | -200°C | 1.18g | 5.011 AU |
| Moon | Radius | Temp | Gravity | Mass | Distance |
|---|
| U2-28D VIII - Moon 1 | 190 km | -200°C | 0g | 1.8 × 10¹⁹ kg | 70,817 km | | U2-28D VIII - Moon 2 | 400 km | -200°C | 0.01g | 2.2 × 10²⁰ kg | 250,945 km | | U2-28D VIII - Moon 3 | 1,040 km | -200°C | 0.03g | 5.5 × 10²¹ kg | 717,020 km | | U2-28D VIII - Moon 4 | 1,690 km | -200°C | 0.07g | 2.9 × 10²² kg | 1,819,160 km | | U2-28D VIII - Moon 5 | 620 km | -200°C | 0.02g | 9.4 × 10²⁰ kg | 4,465,760 km |
|
| U2-28D IX | Gas | 2 | 11,640 km | -214°C | 0.69g | 7.577 AU |
| Moon | Radius | Temp | Gravity | Mass | Distance |
|---|
| U2-28D IX - Moon 1 | 240 km | -214°C | 0g | 3.3 × 10¹⁹ kg | 616,774 km | | U2-28D IX - Moon 2 | 630 km | -214°C | 0.02g | 9.0 × 10²⁰ kg | 2,050,840 km |
|
| U2-28D X | Gas | 8 | 19,900 km | -222°C | 1.05g | 10.247 AU |
| Moon | Radius | Temp | Gravity | Mass | Distance |
|---|
| U2-28D X - Moon 1 | 370 km | -222°C | 0.01g | 1.4 × 10²⁰ kg | 165,909 km | | U2-28D X - Moon 2 | 260 km | -222°C | 0g | 4.3 × 10¹⁹ kg | 336,124 km | | U2-28D X - Moon 3 | 890 km | -222°C | 0.02g | 2.7 × 10²¹ kg | 510,730 km | | U2-28D X - Moon 4 | 1,020 km | -222°C | 0.03g | 4.3 × 10²¹ kg | 1,043,270 km | | U2-28D X - Moon 5 | 2,180 km | -222°C | 0.08g | 5.8 × 10²² kg | 1,915,800 km | | U2-28D X - Moon 6 | 2,080 km | -222°C | 0.08g | 4.9 × 10²² kg | 4,597,680 km | | U2-28D X - Moon 7 | 340 km | -222°C | 0.01g | 1.0 × 10²⁰ kg | 7,933,070 km | | U2-28D X - Moon 8 | 140 km | -222°C | 0g | 5.1 × 10¹⁸ kg | 10,812,800 km |
|
| U2-28D XI | Gas | 5 | 19,200 km | -232°C | 0.95g | 16.048 AU |
| Moon | Radius | Temp | Gravity | Mass | Distance |
|---|
| U2-28D XI - Moon 1 | 180 km | -232°C | 0g | 1.1 × 10¹⁹ kg | 209,548 km | | U2-28D XI - Moon 2 | 310 km | -232°C | 0g | 6.9 × 10¹⁹ kg | 291,653 km | | U2-28D XI - Moon 3 | 590 km | -232°C | 0.01g | 5.7 × 10²⁰ kg | 549,777 km | | U2-28D XI - Moon 4 | 1,490 km | -232°C | 0.04g | 1.4 × 10²² kg | 1,820,100 km | | U2-28D XI - Moon 5 | 2,620 km | -232°C | 0.09g | 9.5 × 10²² kg | 5,367,800 km |
|
| U2-28D XII | Barren | 0 | 3,090 km | -132°C | 0.2g | 22.445 AU |
| U2-28D XIII | Lava | 0 | 3,480 km | 670°C | 0.59g | 28.257 AU |