🌌 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: 0.64 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.4

Radius: 1.63

Gravity: 1.28 G

Time & Orbit

Eccentricity (e): 0.217

Orbit Range: 0.5 AU - 0.78 AU

Year: 336 Days

Day: 25 Hours

Environment

Temp: -137 °C

Axial Tilt: 28.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.81 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 275.1

Radius: 9

Gravity: 3.4 G

Time & Orbit

Eccentricity (e): 0.223

Orbit Range: 0.63 AU - 0.99 AU

Year: 478 Days

Day: 8.1 Hours

Environment

Temp: -157 °C

Axial Tilt: 47.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 59,572,867 km

• M1: 112,049 km (0.116 R)
• M2: 476,020 km (0.117 R)
• M3: 781,350 km (0.115 R)
• M4: 1,227,451 km (0.117 R)
• M5: 1,645,128 km (0.109 R)
• M6: 2,139,848 km (0.111 R)
• M7: 2,431,414 km (0.077 R)
• M8: 2,816,778 km (0.109 R)
• M9: 3,516,148 km (0.114 R)
• M10: 3,888,946 km (0.092 R)
• M11: 4,444,553 km (0.086 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.53 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 763.9

Radius: 12.6

Gravity: 4.81 G

Time & Orbit

Eccentricity (e): 0.102

Orbit Range: 1.37 AU - 1.69 AU

Year: 1241 Days

Day: 14.1 Hours

Environment

Temp: -183 °C

Axial Tilt: 10.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 59,572,867 km

• M1: 156,629 km (0.114 R)
• M2: 591,660 km (0.11 R)
• M3: 1,120,937 km (0.079 R)
• M4: 1,854,266 km (0.108 R)
• M5: 2,627,088 km (0.08 R)
• M6: 4,927,604 km (0.047 R)
• M7: 5,624,730 km (0.108 R)
• M8: 6,410,119 km (0.069 R)
• M9: 7,216,302 km (0.088 R)
• M10: 8,680,117 km (0.114 R)
• M11: 9,090,165 km (0.112 R)
• M12: 9,482,411 km (0.075 R)
• M13: 12,297,095 km (0.045 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.63 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 274.5

Radius: 14.5

Gravity: 1.31 G

Time & Orbit

Eccentricity (e): 0.122

Orbit Range: 1.43 AU - 1.83 AU

Year: 1365 Days

Day: 6.1 Hours

Environment

Temp: -179 °C

Axial Tilt: 25.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 59,572,867 km

• M1: 180,415 km (0.108 R)
• M2: 634,594 km (0.119 R)
• M3: 1,288,038 km (0.063 R)
• M4: 1,837,660 km (0.093 R)
• M5: 2,413,014 km (0.109 R)
• M6: 3,095,180 km (0.092 R)
• M7: 4,119,327 km (0.051 R)
• M8: 4,956,028 km (0.114 R)
• M9: 6,231,350 km (0.054 R)
• M10: 6,946,428 km (0.115 R)
• M11: 7,547,811 km (0.107 R)
• M12: 9,177,829 km (0.095 R)

Planet 5 - Gas Giant

Semi-Major Axis: 4.63 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 433.8

Radius: 10.3

Gravity: 4.09 G

Time & Orbit

Eccentricity (e): 0.028

Orbit Range: 4.5 AU - 4.76 AU

Year: 6536 Days

Day: 9.8 Hours

Environment

Temp: -206 °C

Axial Tilt: 37.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 59,572,867 km

• M1: 128,056 km (0.077 R)
• M2: 784,192 km (0.117 R)
• M3: 1,474,586 km (0.119 R)
• M4: 2,163,784 km (0.044 R)
• M5: 2,757,837 km (0.079 R)
• M6: 3,917,968 km (0.079 R)
• M7: 4,989,239 km (0.103 R)
• M8: 5,845,238 km (0.09 R)
• M9: 6,468,462 km (0.089 R)
• M10: 8,145,155 km (0.068 R)
• M11: 8,645,261 km (0.106 R)
• M12: 10,853,625 km (0.097 R)
• M13: 13,151,897 km (0.112 R)
• M14: 15,875,027 km (0.112 R)
• M15: 19,627,390 km (0.056 R)
• M16: 20,386,899 km (0.119 R)
• M17: 24,245,776 km (0.062 R)
• M18: 25,606,069 km (0.069 R)
• M19: 28,565,713 km (0.101 R)
• M20: 29,631,000 km (0.043 R)

Planet 6 - Gas Giant

Semi-Major Axis: 5.44 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 916.4

Radius: 11.4

Gravity: 7.05 G

Time & Orbit

Eccentricity (e): 0.195

Orbit Range: 4.38 AU - 6.5 AU

Year: 8324 Days

Day: 6.9 Hours

Environment

Temp: -216 °C

Axial Tilt: 48.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 59,572,867 km

• M1: 141,819 km (0.076 R)
• M2: 579,393 km (0.098 R)
• M3: 989,291 km (0.107 R)
• M4: 1,412,353 km (0.07 R)
• M5: 2,139,399 km (0.109 R)
• M6: 2,738,987 km (0.113 R)
• M7: 3,236,999 km (0.113 R)
• M8: 4,387,556 km (0.036 R)
• M9: 6,505,862 km (0.08 R)
• M10: 7,117,717 km (0.073 R)
• M11: 7,809,308 km (0.062 R)
• M12: 9,469,695 km (0.113 R)
• M13: 13,355,200 km (0.059 R)
• M14: 15,715,556 km (0.065 R)
• M15: 17,101,281 km (0.075 R)
• M16: 18,192,747 km (0.119 R)
• M17: 18,945,822 km (0.083 R)
• M18: 19,641,153 km (0.119 R)
• M19: 20,756,705 km (0.084 R)
• M20: 23,376,462 km (0.056 R)
• M21: 26,019,857 km (0.11 R)
• M22: 26,590,722 km (0.035 R)
• M23: 28,153,870 km (0.095 R)
• M24: 28,957,959 km (0.055 R)
• M25: 34,906,569 km (0.09 R)
• M26: 41,106,802 km (0.069 R)
• M27: 45,077,130 km (0.103 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.66 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 672.1

Radius: 9.1

Gravity: 8.12 G

Time & Orbit

Eccentricity (e): 0.157

Orbit Range: 4.77 AU - 6.55 AU

Year: 8834 Days

Day: 10.1 Hours

Environment

Temp: -210 °C

Axial Tilt: 6.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (31)

Outer Limit: 59,572,867 km

• M1: 113,246 km (0.117 R)
• M2: 447,597 km (0.062 R)
• M3: 964,457 km (0.038 R)
• M4: 1,354,160 km (0.1 R)
• M5: 1,684,921 km (0.088 R)
• M6: 1,972,298 km (0.103 R)
• M7: 3,788,267 km (0.098 R)
• M8: 4,233,021 km (0.085 R)
• M9: 4,625,117 km (0.088 R)
• M10: 4,950,194 km (0.103 R)
• M11: 6,157,149 km (0.113 R)
• M12: 6,848,291 km (0.114 R)
• M13: 7,794,049 km (0.098 R)
• M14: 8,471,428 km (0.083 R)
• M15: 9,419,280 km (0.101 R)
• M16: 10,187,765 km (0.119 R)
• M17: 14,048,287 km (0.081 R)
• M18: 17,764,598 km (0.117 R)
• M19: 19,086,145 km (0.099 R)
• M20: 21,351,356 km (0.114 R)
• M21: 23,014,136 km (0.058 R)
• M22: 27,932,316 km (0.037 R)
• M23: 29,213,023 km (0.08 R)
• M24: 30,020,403 km (0.082 R)
• M25: 30,635,550 km (0.118 R)
• M26: 34,170,547 km (0.076 R)
• M27: 34,616,798 km (0.113 R)
• M28: 34,953,991 km (0.111 R)
• M29: 37,612,046 km (0.078 R)
• M30: 42,422,665 km (0.111 R)
• M31: 43,197,283 km (0.061 R)

Planet 8 - Ice Giant

Semi-Major Axis: 10.63 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 254.4

Radius: 3.1

Gravity: 26.47 G

Time & Orbit

Eccentricity (e): 0.062

Orbit Range: 9.97 AU - 11.29 AU

Year: 22736 Days

Day: 21.7 Hours

Environment

Temp: -240 °C

Axial Tilt: 26.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 59,572,867 km

• M1: 38,596 km (0.059 R)
• M2: 315,801 km (0.052 R)
• M3: 415,433 km (0.049 R)
• M4: 698,772 km (0.041 R)
• M5: 991,235 km (0.115 R)
• M6: 2,158,697 km (0.086 R)
• M7: 4,202,055 km (0.093 R)
• M8: 5,355,903 km (0.046 R)
• M9: 5,609,621 km (0.1 R)
• M10: 7,347,200 km (0.1 R)
• M11: 7,797,340 km (0.086 R)
• M12: 8,952,086 km (0.12 R)
• M13: 10,216,188 km (0.076 R)
• M14: 11,594,433 km (0.084 R)
• M15: 20,024,423 km (0.115 R)
• M16: 23,008,601 km (0.064 R)
• M17: 23,774,243 km (0.08 R)
• M18: 25,154,583 km (0.12 R)
• M19: 26,901,437 km (0.055 R)
• M20: 30,065,133 km (0.077 R)
• M21: 32,030,400 km (0.094 R)
• M22: 41,867,058 km (0.113 R)
• M23: 57,455,306 km (0.085 R)

Kuiper Belt

Range: 30 - 50 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 470 - 12,274 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit