🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.31 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.61 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.65

Radius: 1.85

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.219

Orbit Range: 0.48 AU - 0.74 AU

Year: 308 Days

Day: 17.4 Hours

Environment

Temp: -131 °C

Axial Tilt: 21.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.79 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 979.2

Radius: 15

Gravity: 4.35 G

Time & Orbit

Eccentricity (e): 0.023

Orbit Range: 0.77 AU - 0.81 AU

Year: 453 Days

Day: 10.3 Hours

Environment

Temp: -141 °C

Axial Tilt: 23.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 82,770,473 km

• M1: 186,549 km (0.113 R)
• M2: 681,418 km (0.11 R)
• M3: 1,285,644 km (0.107 R)
• M4: 1,755,232 km (0.099 R)
• M5: 2,240,527 km (0.081 R)
• M6: 2,806,157 km (0.105 R)
• M7: 3,517,196 km (0.118 R)
• M8: 5,087,973 km (0.096 R)
• M9: 5,680,979 km (0.087 R)
• M10: 6,686,726 km (0.118 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.97 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 56.3

Radius: 9.3

Gravity: 0.65 G

Time & Orbit

Eccentricity (e): 0.222

Orbit Range: 0.75 AU - 1.19 AU

Year: 617 Days

Day: 5.7 Hours

Environment

Temp: -147 °C

Axial Tilt: 12.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 82,770,473 km

• M1: 117,734 km (0.115 R)
• M2: 475,871 km (0.111 R)
• M3: 1,164,470 km (0.096 R)
• M4: 1,728,304 km (0.07 R)
• M5: 2,153,611 km (0.059 R)
• M6: 2,535,235 km (0.059 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 720.1

Radius: 11.9

Gravity: 5.09 G

Time & Orbit

Eccentricity (e): 0.125

Orbit Range: 0.88 AU - 1.13 AU

Year: 646 Days

Day: 9.6 Hours

Environment

Temp: -167 °C

Axial Tilt: 42.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 82,770,473 km

• M1: 148,102 km (0.095 R)
• M2: 655,538 km (0.111 R)
• M3: 2,175,003 km (0.086 R)
• M4: 2,996,745 km (0.099 R)
• M5: 3,828,359 km (0.118 R)
• M6: 4,298,994 km (0.107 R)
• M7: 6,160,440 km (0.063 R)
• M8: 7,347,200 km (0.067 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.5 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 538.8

Radius: 9.2

Gravity: 6.37 G

Time & Orbit

Eccentricity (e): 0.033

Orbit Range: 1.45 AU - 1.55 AU

Year: 1186 Days

Day: 8.5 Hours

Environment

Temp: -186 °C

Axial Tilt: 12 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 82,770,473 km

• M1: 114,442 km (0.108 R)
• M2: 426,204 km (0.066 R)
• M3: 1,002,306 km (0.116 R)
• M4: 1,467,256 km (0.1 R)
• M5: 2,845,800 km (0.112 R)
• M6: 3,692,674 km (0.12 R)
• M7: 4,208,487 km (0.119 R)
• M8: 4,501,550 km (0.109 R)
• M9: 4,826,925 km (0.091 R)
• M10: 5,545,294 km (0.113 R)
• M11: 6,859,362 km (0.099 R)
• M12: 8,025,327 km (0.116 R)
• M13: 9,032,420 km (0.08 R)
• M14: 9,347,473 km (0.098 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.45 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 337.9

Radius: 13

Gravity: 2 G

Time & Orbit

Eccentricity (e): 0.01

Orbit Range: 2.43 AU - 2.47 AU

Year: 2476 Days

Day: 11 Hours

Environment

Temp: -203 °C

Axial Tilt: 28.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 82,770,473 km

• M1: 162,314 km (0.111 R)
• M2: 678,127 km (0.089 R)
• M3: 1,240,615 km (0.041 R)
• M4: 1,805,646 km (0.065 R)
• M5: 2,605,995 km (0.117 R)
• M6: 3,180,152 km (0.053 R)
• M7: 5,163,670 km (0.111 R)
• M8: 6,196,493 km (0.061 R)
• M9: 6,646,334 km (0.116 R)
• M10: 7,334,933 km (0.061 R)
• M11: 11,853,238 km (0.112 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.08 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 15.2

Radius: 9.2

Gravity: 0.18 G

Time & Orbit

Eccentricity (e): 0.081

Orbit Range: 2.83 AU - 3.33 AU

Year: 3490 Days

Day: 10.2 Hours

Environment

Temp: -200 °C

Axial Tilt: 33.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (4)

Outer Limit: 82,770,473 km

• M1: 114,891 km (0.053 R)
• M2: 474,524 km (0.099 R)
• M3: 4,866,718 km (0.051 R)
• M4: 6,159,543 km (0.097 R)

Planet 8 - Gas Giant

Semi-Major Axis: 3.5 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 712.1

Radius: 12.1

Gravity: 4.86 G

Time & Orbit

Eccentricity (e): 0.225

Orbit Range: 2.71 AU - 4.29 AU

Year: 4228 Days

Day: 5.2 Hours

Environment

Temp: -210 °C

Axial Tilt: 33 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 82,770,473 km

• M1: 151,991 km (0.069 R)
• M2: 550,520 km (0.089 R)
• M3: 1,084,285 km (0.083 R)
• M4: 1,528,292 km (0.12 R)
• M5: 1,930,860 km (0.119 R)
• M6: 2,515,339 km (0.083 R)
• M7: 3,292,350 km (0.048 R)
• M8: 3,716,609 km (0.099 R)
• M9: 4,627,062 km (0.08 R)
• M10: 5,457,929 km (0.047 R)
• M11: 6,026,101 km (0.086 R)
• M12: 6,759,729 km (0.117 R)
• M13: 7,148,385 km (0.113 R)
• M14: 9,047,679 km (0.115 R)
• M15: 10,559,515 km (0.064 R)
• M16: 11,950,626 km (0.077 R)
• M17: 13,258,859 km (0.036 R)
• M18: 14,182,626 km (0.079 R)
• M19: 15,930,079 km (0.081 R)
• M20: 17,512,824 km (0.117 R)
• M21: 25,831,214 km (0.094 R)
• M22: 26,624,531 km (0.111 R)

Planet 9 - Gas Giant

Semi-Major Axis: 4.03 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 196.5

Radius: 11

Gravity: 1.62 G

Time & Orbit

Eccentricity (e): 0.213

Orbit Range: 3.17 AU - 4.89 AU

Year: 5224 Days

Day: 12.3 Hours

Environment

Temp: -216 °C

Axial Tilt: 21.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 82,770,473 km

• M1: 136,732 km (0.11 R)
• M2: 791,822 km (0.077 R)
• M3: 1,592,469 km (0.113 R)
• M4: 2,042,759 km (0.112 R)
• M5: 3,203,489 km (0.117 R)
• M6: 6,045,699 km (0.1 R)
• M7: 7,092,884 km (0.062 R)
• M8: 7,488,271 km (0.102 R)
• M9: 7,962,646 km (0.059 R)
• M10: 11,951,673 km (0.078 R)
• M11: 13,410,402 km (0.074 R)
• M12: 15,133,470 km (0.074 R)
• M13: 16,308,861 km (0.118 R)

Planet 10 - Ice Giant

Semi-Major Axis: 10.68 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 694.5

Radius: 6.2

Gravity: 18.07 G

Time & Orbit

Eccentricity (e): 0.054

Orbit Range: 10.1 AU - 11.26 AU

Year: 22536 Days

Day: 18.9 Hours

Environment

Temp: -226 °C

Axial Tilt: 28.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 82,770,473 km

• M1: 77,043 km (0.092 R)
• M2: 379,081 km (0.079 R)
• M3: 1,384,827 km (0.092 R)
• M4: 4,265,783 km (0.051 R)
• M5: 4,759,456 km (0.106 R)
• M6: 6,651,869 km (0.088 R)
• M7: 7,169,328 km (0.106 R)
• M8: 7,364,105 km (0.096 R)
• M9: 8,772,718 km (0.099 R)
• M10: 17,584,033 km (0.099 R)
• M11: 18,118,097 km (0.06 R)
• M12: 23,528,454 km (0.111 R)
• M13: 31,459,535 km (0.089 R)
• M14: 40,385,441 km (0.088 R)
• M15: 41,314,444 km (0.118 R)
• M16: 44,513,894 km (0.118 R)
• M17: 50,147,600 km (0.117 R)
• M18: 53,969,526 km (0.101 R)
• M19: 60,159,886 km (0.114 R)
• M20: 63,633,249 km (0.066 R)
• M21: 65,737,493 km (0.115 R)
• M22: 66,806,819 km (0.118 R)
• M23: 67,887,813 km (0.069 R)
• M24: 76,251,531 km (0.025 R)

Kuiper Belt

Range: 30 - 56 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 158 - 18,039 AU

Composition

Type: Cometary Reservoir

System's final boundary, containing trillions of icy planetesimals.

Gravitational Limit