🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.28 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.56 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.73

Radius: 1.69

Gravity: 1.31 G

Time & Orbit

Eccentricity (e): 0.242

Orbit Range: 0.42 AU - 0.7 AU

Year: 154 Days

Day: 17.4 Hours

Environment

Temp: 193 °C

Axial Tilt: 36.8 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 1.04 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.79

Radius: 0.91

Gravity: 0.95 G

Time & Orbit

Eccentricity (e): 0.203

Orbit Range: 0.83 AU - 1.25 AU

Year: 389 Days

Day: 29.4 Hours

Environment

Temp: 34 °C

Axial Tilt: 2.4 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Satellites (1)

Outer Limit: 69,898,953 km

• M1: 21,841 km (0.078 R)

Planet 3 - Terrestrial

Semi-Major Axis: 1.66 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.61

Radius: 1.67

Gravity: 1.29 G

Time & Orbit

Eccentricity (e): 0.1

Orbit Range: 1.49 AU - 1.83 AU

Year: 785 Days

Day: 28.3 Hours

Environment

Temp: -47 °C

Axial Tilt: 31 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 69,898,953 km

• M1: 44,879 km (0.118 R)

Planet 4 - Terrestrial

Semi-Major Axis: 2 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.2

Radius: 0.53

Gravity: 0.71 G

Time & Orbit

Eccentricity (e): 0.111

Orbit Range: 1.78 AU - 2.22 AU

Year: 1038 Days

Day: 38.8 Hours

Environment

Temp: -75 °C

Axial Tilt: 19.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Terrestrial

Semi-Major Axis: 2.32 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.89

Radius: 0.95

Gravity: 0.99 G

Time & Orbit

Eccentricity (e): 0.063

Orbit Range: 2.17 AU - 2.47 AU

Year: 1297 Days

Day: 20.8 Hours

Environment

Temp: -72 °C

Axial Tilt: 33.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Asteroid Belt

Center: 4.07 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 6 - Gas Giant

Semi-Major Axis: 5.81 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 112.6

Radius: 13.5

Gravity: 0.62 G

Time & Orbit

Eccentricity (e): 0.023

Orbit Range: 5.68 AU - 5.94 AU

Year: 5141 Days

Day: 12.9 Hours

Environment

Temp: -147 °C

Axial Tilt: 21.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 69,898,953 km

• M1: 167,849 km (0.118 R)
• M2: 622,776 km (0.116 R)
• M3: 2,708,170 km (0.097 R)
• M4: 3,372,534 km (0.109 R)
• M5: 4,201,755 km (0.112 R)
• M6: 5,118,192 km (0.079 R)
• M7: 6,684,332 km (0.087 R)
• M8: 7,462,241 km (0.079 R)
• M9: 8,709,289 km (0.094 R)
• M10: 9,265,494 km (0.099 R)
• M11: 11,810,004 km (0.049 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.86 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 619.9

Radius: 11.1

Gravity: 5.03 G

Time & Orbit

Eccentricity (e): 0.09

Orbit Range: 5.33 AU - 6.39 AU

Year: 5207 Days

Day: 10.6 Hours

Environment

Temp: -152 °C

Axial Tilt: 11.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 69,898,953 km

• M1: 138,079 km (0.092 R)
• M2: 545,883 km (0.101 R)
• M3: 1,071,719 km (0.115 R)
• M4: 1,626,727 km (0.067 R)
• M5: 1,993,092 km (0.067 R)
• M6: 2,463,727 km (0.086 R)
• M7: 2,970,415 km (0.112 R)
• M8: 4,815,555 km (0.112 R)
• M9: 5,699,230 km (0.078 R)
• M10: 6,985,173 km (0.076 R)
• M11: 7,714,463 km (0.092 R)
• M12: 8,379,426 km (0.084 R)
• M13: 10,165,923 km (0.071 R)
• M14: 11,854,285 km (0.063 R)
• M15: 13,302,691 km (0.109 R)
• M16: 14,809,890 km (0.077 R)
• M17: 15,895,522 km (0.097 R)
• M18: 16,308,711 km (0.107 R)
• M19: 17,094,848 km (0.096 R)
• M20: 19,137,906 km (0.098 R)
• M21: 21,409,998 km (0.119 R)
• M22: 23,398,453 km (0.119 R)
• M23: 26,981,322 km (0.091 R)
• M24: 27,654,513 km (0.111 R)

Planet 8 - Gas Giant

Semi-Major Axis: 6.33 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 350.5

Radius: 14.4

Gravity: 1.69 G

Time & Orbit

Eccentricity (e): 0.191

Orbit Range: 5.12 AU - 7.54 AU

Year: 5846 Days

Day: 13 Hours

Environment

Temp: -149 °C

Axial Tilt: 49.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 69,898,953 km

• M1: 179,069 km (0.109 R)
• M2: 674,537 km (0.06 R)
• M3: 2,137,754 km (0.06 R)
• M4: 2,873,476 km (0.119 R)
• M5: 4,302,285 km (0.101 R)
• M6: 5,188,353 km (0.092 R)
• M7: 5,675,294 km (0.07 R)
• M8: 6,163,432 km (0.112 R)
• M9: 9,469,246 km (0.039 R)
• M10: 9,952,447 km (0.09 R)
• M11: 12,573,103 km (0.108 R)
• M12: 15,513,898 km (0.088 R)
• M13: 19,460,289 km (0.037 R)
• M14: 25,547,427 km (0.105 R)

Planet 9 - Gas Giant

Semi-Major Axis: 6.86 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 498.1

Radius: 8.8

Gravity: 6.43 G

Time & Orbit

Eccentricity (e): 0.231

Orbit Range: 5.28 AU - 8.44 AU

Year: 6596 Days

Day: 7.9 Hours

Environment

Temp: -155 °C

Axial Tilt: 22.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 69,898,953 km

• M1: 109,805 km (0.11 R)
• M2: 553,811 km (0.058 R)
• M3: 919,877 km (0.106 R)
• M4: 1,377,497 km (0.115 R)
• M5: 1,825,992 km (0.103 R)
• M6: 2,697,399 km (0.098 R)
• M7: 2,997,193 km (0.107 R)
• M8: 3,424,594 km (0.091 R)
• M9: 3,731,868 km (0.111 R)
• M10: 4,202,653 km (0.052 R)
• M11: 5,038,157 km (0.083 R)
• M12: 6,659,499 km (0.085 R)
• M13: 7,035,438 km (0.097 R)
• M14: 7,389,237 km (0.105 R)
• M15: 7,829,653 km (0.11 R)
• M16: 10,802,612 km (0.117 R)
• M17: 13,193,036 km (0.083 R)
• M18: 15,319,869 km (0.095 R)
• M19: 15,675,463 km (0.119 R)
• M20: 21,766,490 km (0.084 R)
• M21: 22,367,425 km (0.071 R)
• M22: 24,719,403 km (0.054 R)
• M23: 25,871,605 km (0.09 R)
• M24: 27,929,324 km (0.046 R)

Planet 10 - Ice Giant

Semi-Major Axis: 13.12 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 698

Radius: 7.2

Gravity: 13.46 G

Time & Orbit

Eccentricity (e): 0.129

Orbit Range: 11.43 AU - 14.81 AU

Year: 17445 Days

Day: 21.7 Hours

Environment

Temp: -188 °C

Axial Tilt: 5.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (31)

Outer Limit: 69,898,953 km

• M1: 95,144 km (0.057 R)
• M2: 344,524 km (0.095 R)
• M3: 575,952 km (0.08 R)
• M4: 1,557,314 km (0.066 R)
• M5: 2,377,110 km (0.08 R)
• M6: 3,082,614 km (0.097 R)
• M7: 4,359,282 km (0.098 R)
• M8: 4,591,009 km (0.117 R)
• M9: 5,717,631 km (0.046 R)
• M10: 7,063,263 km (0.107 R)
• M11: 7,291,251 km (0.094 R)
• M12: 7,809,906 km (0.069 R)
• M13: 8,152,635 km (0.039 R)
• M14: 10,306,994 km (0.074 R)
• M15: 11,143,246 km (0.032 R)
• M16: 13,430,298 km (0.029 R)
• M17: 13,851,566 km (0.08 R)
• M18: 14,573,226 km (0.044 R)
• M19: 17,795,714 km (0.036 R)
• M20: 22,039,805 km (0.069 R)
• M21: 24,136,868 km (0.086 R)
• M22: 36,370,833 km (0.093 R)
• M23: 39,861,549 km (0.112 R)
• M24: 44,337,518 km (0.113 R)
• M25: 49,137,365 km (0.065 R)
• M26: 49,635,526 km (0.114 R)
• M27: 52,177,344 km (0.109 R)
• M28: 55,161,372 km (0.094 R)
• M29: 55,879,741 km (0.101 R)
• M30: 56,604,244 km (0.064 R)
• M31: 62,045,717 km (0.093 R)

Kuiper Belt

Range: 30 - 59 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 371 - 14,118 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit