🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.26 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.51 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.42

Radius: 1.81

Gravity: 1.35 G

Time & Orbit

Eccentricity (e): 0.23

Orbit Range: 0.39 AU - 0.63 AU

Year: 232 Days

Day: 34 Hours

Environment

Temp: -114 °C

Axial Tilt: 38.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.55 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.87

Radius: 1.88

Gravity: 1.38 G

Time & Orbit

Eccentricity (e): 0.004

Orbit Range: 0.55 AU - 0.55 AU

Year: 259 Days

Day: 25.6 Hours

Environment

Temp: -119 °C

Axial Tilt: 18.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.98 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 689.2

Radius: 10.3

Gravity: 6.5 G

Time & Orbit

Eccentricity (e): 0.007

Orbit Range: 0.97 AU - 0.99 AU

Year: 617 Days

Day: 10 Hours

Environment

Temp: -165 °C

Axial Tilt: 29.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 36,652,274 km

• M1: 128,056 km (0.073 R)
• M2: 504,444 km (0.089 R)
• M3: 836,102 km (0.081 R)
• M4: 1,514,678 km (0.113 R)
• M5: 1,988,604 km (0.054 R)
• M6: 2,455,799 km (0.073 R)
• M7: 2,833,384 km (0.061 R)
• M8: 3,803,526 km (0.111 R)
• M9: 4,449,789 km (0.073 R)
• M10: 5,429,655 km (0.036 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.8 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 480

Radius: 10.6

Gravity: 4.27 G

Time & Orbit

Eccentricity (e): 0.155

Orbit Range: 1.52 AU - 2.08 AU

Year: 1535 Days

Day: 9.4 Hours

Environment

Temp: -186 °C

Axial Tilt: 29.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 36,652,274 km

• M1: 131,796 km (0.065 R)
• M2: 577,747 km (0.102 R)
• M3: 922,271 km (0.079 R)
• M4: 1,292,077 km (0.085 R)
• M5: 1,743,114 km (0.079 R)
• M6: 2,207,466 km (0.069 R)
• M7: 2,899,955 km (0.087 R)
• M8: 3,731,420 km (0.1 R)
• M9: 4,399,524 km (0.092 R)
• M10: 5,666,468 km (0.094 R)
• M11: 6,338,013 km (0.118 R)
• M12: 6,790,247 km (0.084 R)
• M13: 7,366,349 km (0.082 R)
• M14: 7,759,492 km (0.086 R)
• M15: 8,876,838 km (0.104 R)
• M16: 9,382,928 km (0.064 R)
• M17: 10,098,155 km (0.05 R)
• M18: 10,816,076 km (0.109 R)
• M19: 11,290,301 km (0.104 R)
• M20: 12,027,818 km (0.085 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.81 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 256.1

Radius: 8.6

Gravity: 3.46 G

Time & Orbit

Eccentricity (e): 0.19

Orbit Range: 1.47 AU - 2.15 AU

Year: 1548 Days

Day: 5.9 Hours

Environment

Temp: -188 °C

Axial Tilt: 111.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 36,652,274 km

• M1: 110,104 km (0.119 R)
• M2: 394,789 km (0.1 R)
• M3: 746,793 km (0.069 R)
• M4: 1,136,046 km (0.062 R)
• M5: 1,452,296 km (0.094 R)
• M6: 1,902,436 km (0.027 R)
• M7: 2,234,394 km (0.049 R)
• M8: 2,951,566 km (0.084 R)
• M9: 4,709,491 km (0.104 R)
• M10: 5,149,907 km (0.037 R)
• M11: 5,419,332 km (0.041 R)
• M12: 6,177,195 km (0.104 R)
• M13: 6,796,231 km (0.109 R)
• M14: 8,183,901 km (0.069 R)
• M15: 9,606,128 km (0.094 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.95 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 944.3

Radius: 14.5

Gravity: 4.49 G

Time & Orbit

Eccentricity (e): 0.091

Orbit Range: 3.59 AU - 4.31 AU

Year: 4991 Days

Day: 6.7 Hours

Environment

Temp: -206 °C

Axial Tilt: 34.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 36,652,274 km

• M1: 181,462 km (0.105 R)
• M2: 822,938 km (0.043 R)
• M3: 1,295,069 km (0.07 R)
• M4: 2,447,870 km (0.112 R)
• M5: 3,102,660 km (0.098 R)
• M6: 4,740,757 km (0.11 R)
• M7: 6,864,597 km (0.062 R)
• M8: 9,181,121 km (0.096 R)
• M9: 10,267,201 km (0.089 R)
• M10: 13,545,938 km (0.083 R)
• M11: 22,318,207 km (0.076 R)
• M12: 23,717,695 km (0.114 R)
• M13: 25,673,538 km (0.102 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.09 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 138.5

Radius: 12.3

Gravity: 0.92 G

Time & Orbit

Eccentricity (e): 0.091

Orbit Range: 4.63 AU - 5.55 AU

Year: 7301 Days

Day: 5.6 Hours

Environment

Temp: -218 °C

Axial Tilt: 7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 36,652,274 km

• M1: 155,731 km (0.08 R)
• M2: 902,374 km (0.105 R)
• M3: 1,497,026 km (0.071 R)
• M4: 2,190,412 km (0.069 R)
• M5: 4,712,632 km (0.105 R)
• M6: 6,433,307 km (0.099 R)
• M7: 14,019,265 km (0.045 R)
• M8: 21,090,009 km (0.079 R)

Planet 8 - Gas Giant

Semi-Major Axis: 5.99 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 546.4

Radius: 11.2

Gravity: 4.36 G

Time & Orbit

Eccentricity (e): 0.007

Orbit Range: 5.95 AU - 6.03 AU

Year: 9321 Days

Day: 5.5 Hours

Environment

Temp: -213 °C

Axial Tilt: 35.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 36,652,274 km

• M1: 185,501 km (0.118 R)
• M2: 559,496 km (0.108 R)
• M3: 1,138,739 km (0.101 R)
• M4: 1,644,978 km (0.056 R)
• M5: 2,030,791 km (0.074 R)
• M6: 3,740,844 km (0.115 R)
• M7: 5,083,036 km (0.062 R)
• M8: 6,084,145 km (0.097 R)
• M9: 6,577,220 km (0.103 R)
• M10: 8,218,907 km (0.059 R)
• M11: 9,090,165 km (0.1 R)
• M12: 10,411,862 km (0.073 R)
• M13: 11,016,088 km (0.101 R)
• M14: 12,184,298 km (0.043 R)
• M15: 13,374,648 km (0.058 R)
• M16: 14,210,302 km (0.108 R)
• M17: 15,593,484 km (0.07 R)
• M18: 16,317,687 km (0.038 R)
• M19: 22,942,778 km (0.077 R)
• M20: 23,966,177 km (0.066 R)
• M21: 27,502,970 km (0.054 R)
• M22: 29,148,248 km (0.117 R)
• M23: 35,593,073 km (0.091 R)
• M24: 40,914,718 km (0.073 R)
• M25: 41,662,109 km (0.092 R)

Planet 9 - Ice Giant

Semi-Major Axis: 6.42 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 286.3

Radius: 5.3

Gravity: 10.19 G

Time & Orbit

Eccentricity (e): 0.091

Orbit Range: 5.84 AU - 7 AU

Year: 10343 Days

Day: 16.2 Hours

Environment

Temp: -212 °C

Axial Tilt: 43.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (32)

Outer Limit: 36,652,274 km

• M1: 67,618 km (0.084 R)
• M2: 354,248 km (0.077 R)
• M3: 522,845 km (0.097 R)
• M4: 826,827 km (0.063 R)
• M5: 1,005,148 km (0.108 R)
• M6: 1,198,578 km (0.113 R)
• M7: 1,416,841 km (0.073 R)
• M8: 1,919,191 km (0.073 R)
• M9: 3,015,594 km (0.083 R)
• M10: 3,650,338 km (0.115 R)
• M11: 3,816,092 km (0.082 R)
• M12: 4,036,749 km (0.117 R)
• M13: 4,584,576 km (0.066 R)
• M14: 5,063,290 km (0.081 R)
• M15: 5,329,873 km (0.11 R)
• M16: 5,794,973 km (0.113 R)
• M17: 6,594,873 km (0.084 R)
• M18: 6,948,971 km (0.109 R)
• M19: 7,278,385 km (0.117 R)
• M20: 8,452,280 km (0.119 R)
• M21: 9,345,529 km (0.069 R)
• M22: 9,792,377 km (0.118 R)
• M23: 11,928,785 km (0.105 R)
• M24: 13,950,600 km (0.063 R)
• M25: 15,133,321 km (0.116 R)
• M26: 20,910,042 km (0.056 R)
• M27: 26,915,649 km (0.096 R)
• M28: 29,022,286 km (0.099 R)
• M29: 29,684,705 km (0.114 R)
• M30: 31,137,899 km (0.114 R)
• M31: 32,637,917 km (0.096 R)
• M32: 36,106,194 km (0.082 R)

Kuiper Belt

Range: 30 - 53 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 239 - 10,431 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit