🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.32 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.63 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.42

Radius: 1.81

Gravity: 1.35 G

Time & Orbit

Eccentricity (e): 0.215

Orbit Range: 0.49 AU - 0.77 AU

Year: 323 Days

Day: 45.5 Hours

Environment

Temp: -121 °C

Axial Tilt: 141.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.73 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 321.8

Radius: 10.4

Gravity: 2.98 G

Time & Orbit

Eccentricity (e): 0.042

Orbit Range: 0.7 AU - 0.76 AU

Year: 403 Days

Day: 6.9 Hours

Environment

Temp: -131 °C

Axial Tilt: 35.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 61,158,009 km

• M1: 129,402 km (0.056 R)
• M2: 481,406 km (0.07 R)
• M3: 1,084,285 km (0.098 R)
• M4: 1,531,134 km (0.054 R)
• M5: 1,871,918 km (0.109 R)
• M6: 2,585,051 km (0.118 R)
• M7: 2,995,099 km (0.107 R)
• M8: 3,426,838 km (0.093 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.08 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 769.2

Radius: 12.5

Gravity: 4.92 G

Time & Orbit

Eccentricity (e): 0.217

Orbit Range: 0.85 AU - 1.31 AU

Year: 725 Days

Day: 7 Hours

Environment

Temp: -159 °C

Axial Tilt: 39.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 61,158,009 km

• M1: 156,928 km (0.05 R)
• M2: 572,361 km (0.054 R)
• M3: 994,078 km (0.044 R)
• M4: 1,421,629 km (0.084 R)
• M5: 1,840,652 km (0.086 R)
• M6: 2,622,750 km (0.052 R)
• M7: 3,532,305 km (0.081 R)
• M8: 3,992,917 km (0.088 R)
• M9: 4,444,852 km (0.117 R)
• M10: 5,124,475 km (0.106 R)
• M11: 5,951,003 km (0.112 R)
• M12: 6,670,419 km (0.087 R)
• M13: 7,196,705 km (0.083 R)
• M14: 7,703,243 km (0.109 R)
• M15: 8,258,251 km (0.104 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.48 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 152.4

Radius: 13

Gravity: 0.9 G

Time & Orbit

Eccentricity (e): 0.069

Orbit Range: 1.38 AU - 1.58 AU

Year: 1163 Days

Day: 9.8 Hours

Environment

Temp: -168 °C

Axial Tilt: 38.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 61,158,009 km

• M1: 161,715 km (0.071 R)
• M2: 648,058 km (0.046 R)
• M3: 1,202,168 km (0.093 R)
• M4: 1,613,862 km (0.087 R)
• M5: 3,887,151 km (0.071 R)
• M6: 5,286,938 km (0.114 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.78 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 258

Radius: 8.8

Gravity: 3.33 G

Time & Orbit

Eccentricity (e): 0.197

Orbit Range: 1.43 AU - 2.13 AU

Year: 1533 Days

Day: 12.1 Hours

Environment

Temp: -179 °C

Axial Tilt: 43 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 61,158,009 km

• M1: 111,600 km (0.109 R)
• M2: 508,633 km (0.031 R)
• M3: 967,898 km (0.108 R)
• M4: 1,662,332 km (0.092 R)
• M5: 2,206,718 km (0.102 R)
• M6: 2,597,019 km (0.103 R)
• M7: 3,531,407 km (0.083 R)
• M8: 3,815,942 km (0.04 R)
• M9: 4,981,759 km (0.093 R)
• M10: 5,516,870 km (0.066 R)
• M11: 8,571,210 km (0.084 R)
• M12: 9,654,448 km (0.051 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.95 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 92.7

Radius: 10.7

Gravity: 0.81 G

Time & Orbit

Eccentricity (e): 0.079

Orbit Range: 4.56 AU - 5.34 AU

Year: 7111 Days

Day: 5.5 Hours

Environment

Temp: -222 °C

Axial Tilt: 34 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 61,158,009 km

• M1: 133,292 km (0.025 R)
• M2: 845,677 km (0.038 R)
• M3: 1,288,187 km (0.093 R)
• M4: 2,839,517 km (0.105 R)
• M5: 5,189,999 km (0.113 R)
• M6: 7,191,170 km (0.099 R)
• M7: 9,057,553 km (0.103 R)
• M8: 9,770,237 km (0.068 R)
• M9: 10,596,915 km (0.07 R)
• M10: 11,067,101 km (0.116 R)
• M11: 11,757,046 km (0.091 R)
• M12: 15,296,083 km (0.11 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.13 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 808.9

Radius: 13.1

Gravity: 4.71 G

Time & Orbit

Eccentricity (e): 0.075

Orbit Range: 4.75 AU - 5.51 AU

Year: 7502 Days

Day: 11.1 Hours

Environment

Temp: -218 °C

Axial Tilt: 7.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 61,158,009 km

• M1: 162,912 km (0.075 R)
• M2: 1,158,336 km (0.086 R)
• M3: 3,761,040 km (0.111 R)
• M4: 4,600,434 km (0.09 R)
• M5: 5,216,627 km (0.072 R)
• M6: 5,690,254 km (0.04 R)
• M7: 8,167,296 km (0.115 R)
• M8: 8,895,837 km (0.079 R)
• M9: 14,887,980 km (0.064 R)
• M10: 16,573,051 km (0.118 R)
• M11: 17,811,870 km (0.083 R)
• M12: 19,709,220 km (0.066 R)
• M13: 31,770,100 km (0.082 R)
• M14: 33,141,015 km (0.086 R)
• M15: 34,992,887 km (0.108 R)
• M16: 37,723,497 km (0.108 R)
• M17: 39,862,597 km (0.088 R)

Planet 8 - Ice Giant

Semi-Major Axis: 9.4 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 410.9

Radius: 3.6

Gravity: 31.71 G

Time & Orbit

Eccentricity (e): 0.181

Orbit Range: 7.7 AU - 11.1 AU

Year: 18608 Days

Day: 16.2 Hours

Environment

Temp: -224 °C

Axial Tilt: 10.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (31)

Outer Limit: 61,158,009 km

• M1: 45,179 km (0.12 R)
• M2: 556,055 km (0.12 R)
• M3: 713,432 km (0.114 R)
• M4: 889,659 km (0.117 R)
• M5: 2,028,547 km (0.112 R)
• M6: 2,142,690 km (0.093 R)
• M7: 2,363,048 km (0.109 R)
• M8: 2,554,234 km (0.107 R)
• M9: 3,505,228 km (0.107 R)
• M10: 6,189,313 km (0.103 R)
• M11: 6,553,135 km (0.109 R)
• M12: 6,845,748 km (0.117 R)
• M13: 7,147,038 km (0.079 R)
• M14: 7,278,834 km (0.116 R)
• M15: 7,457,005 km (0.117 R)
• M16: 9,775,174 km (0.095 R)
• M17: 11,125,893 km (0.089 R)
• M18: 16,140,413 km (0.029 R)
• M19: 16,905,607 km (0.09 R)
• M20: 19,687,678 km (0.084 R)
• M21: 25,723,952 km (0.041 R)
• M22: 28,053,789 km (0.115 R)
• M23: 29,382,069 km (0.12 R)
• M24: 30,984,113 km (0.052 R)
• M25: 31,688,120 km (0.099 R)
• M26: 36,396,414 km (0.068 R)
• M27: 39,598,108 km (0.043 R)
• M28: 40,288,053 km (0.094 R)
• M29: 43,711,151 km (0.08 R)
• M30: 44,004,962 km (0.12 R)
• M31: 46,249,977 km (0.067 R)

Kuiper Belt

Range: 30 - 54 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 329 - 18,176 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit