🌌 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: 3.66

Radius: 1.68

Gravity: 1.3 G

Time & Orbit

Eccentricity (e): 0.234

Orbit Range: 0.49 AU - 0.79 AU

Year: 331 Days

Day: 35.1 Hours

Environment

Temp: -142 °C

Axial Tilt: 1.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 47,923,249 km

• M1: 345,421 km (0.107 R)
• M2: 756,816 km (0.11 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.9 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 398.6

Radius: 11.7

Gravity: 2.91 G

Time & Orbit

Eccentricity (e): 0.122

Orbit Range: 0.79 AU - 1.01 AU

Year: 551 Days

Day: 5.4 Hours

Environment

Temp: -143 °C

Axial Tilt: 22.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 47,923,249 km

• M1: 145,559 km (0.112 R)
• M2: 588,518 km (0.084 R)
• M3: 967,898 km (0.066 R)
• M4: 1,384,528 km (0.106 R)
• M5: 2,092,126 km (0.116 R)
• M6: 2,529,550 km (0.031 R)
• M7: 3,071,543 km (0.083 R)
• M8: 3,542,926 km (0.074 R)
• M9: 4,156,278 km (0.119 R)
• M10: 4,869,111 km (0.08 R)
• M11: 5,255,373 km (0.096 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.89 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 508.1

Radius: 8.8

Gravity: 6.56 G

Time & Orbit

Eccentricity (e): 0.243

Orbit Range: 1.43 AU - 2.35 AU

Year: 1678 Days

Day: 11.8 Hours

Environment

Temp: -193 °C

Axial Tilt: 8.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 47,923,249 km

• M1: 109,506 km (0.083 R)
• M2: 403,017 km (0.067 R)
• M3: 1,216,829 km (0.086 R)
• M4: 1,630,617 km (0.076 R)
• M5: 2,908,482 km (0.071 R)
• M6: 4,099,281 km (0.084 R)
• M7: 5,222,312 km (0.114 R)
• M8: 5,499,966 km (0.118 R)
• M9: 6,811,041 km (0.092 R)
• M10: 7,091,238 km (0.074 R)
• M11: 7,729,722 km (0.097 R)
• M12: 8,063,026 km (0.088 R)
• M13: 8,348,010 km (0.11 R)
• M14: 9,811,227 km (0.088 R)
• M15: 13,198,571 km (0.118 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.83 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 16.1

Radius: 12.2

Gravity: 0.11 G

Time & Orbit

Eccentricity (e): 0.139

Orbit Range: 2.44 AU - 3.22 AU

Year: 3074 Days

Day: 8.3 Hours

Environment

Temp: -206 °C

Axial Tilt: 5.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 47,923,249 km

• M1: 153,039 km (0.088 R)
• M2: 793,318 km (0.034 R)
• M3: 1,620,145 km (0.107 R)
• M4: 2,757,089 km (0.087 R)
• M5: 3,217,701 km (0.095 R)
• M6: 4,903,369 km (0.072 R)

Planet 5 - Ice Giant

Semi-Major Axis: 6.17 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 271.9

Radius: 7.2

Gravity: 5.24 G

Time & Orbit

Eccentricity (e): 0.207

Orbit Range: 4.89 AU - 7.45 AU

Year: 9896 Days

Day: 20.3 Hours

Environment

Temp: -213 °C

Axial Tilt: 13.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 47,923,249 km

• M1: 90,208 km (0.11 R)
• M2: 344,225 km (0.031 R)
• M3: 1,413,101 km (0.097 R)
• M4: 2,356,316 km (0.085 R)
• M5: 4,219,707 km (0.068 R)
• M6: 7,328,650 km (0.04 R)
• M7: 9,065,781 km (0.073 R)
• M8: 13,663,073 km (0.098 R)
• M9: 17,887,118 km (0.108 R)
• M10: 23,065,748 km (0.091 R)
• M11: 28,977,556 km (0.078 R)
• M12: 31,249,798 km (0.119 R)
• M13: 32,828,954 km (0.084 R)

Planet 6 - Ice Giant

Semi-Major Axis: 6.33 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 65

Radius: 3.6

Gravity: 5.02 G

Time & Orbit

Eccentricity (e): 0.176

Orbit Range: 5.22 AU - 7.44 AU

Year: 10283 Days

Day: 15.4 Hours

Environment

Temp: -214 °C

Axial Tilt: 1.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 47,923,249 km

• M1: 219,909 km (0.07 R)
• M2: 387,907 km (0.095 R)
• M3: 957,576 km (0.099 R)
• M4: 1,143,526 km (0.025 R)
• M5: 1,446,163 km (0.053 R)
• M6: 2,138,651 km (0.081 R)
• M7: 2,382,196 km (0.113 R)
• M8: 3,298,184 km (0.068 R)
• M9: 5,445,662 km (0.056 R)
• M10: 5,576,560 km (0.101 R)
• M11: 7,096,025 km (0.089 R)
• M12: 8,238,355 km (0.096 R)

Planet 7 - Ice Giant

Semi-Major Axis: 7.1 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 458.8

Radius: 4

Gravity: 28.68 G

Time & Orbit

Eccentricity (e): 0.155

Orbit Range: 6 AU - 8.2 AU

Year: 12215 Days

Day: 20.6 Hours

Environment

Temp: -232 °C

Axial Tilt: 12.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (32)

Outer Limit: 47,923,249 km

• M1: 49,816 km (0.088 R)
• M2: 208,091 km (0.07 R)
• M3: 499,507 km (0.112 R)
• M4: 671,096 km (0.059 R)
• M5: 1,205,310 km (0.108 R)
• M6: 1,849,628 km (0.104 R)
• M7: 1,981,573 km (0.107 R)
• M8: 2,396,857 km (0.079 R)
• M9: 2,824,557 km (0.096 R)
• M10: 4,679,272 km (0.052 R)
• M11: 7,756,799 km (0.074 R)
• M12: 7,971,323 km (0.114 R)
• M13: 8,869,059 km (0.119 R)
• M14: 10,287,397 km (0.098 R)
• M15: 11,906,794 km (0.113 R)
• M16: 12,134,781 km (0.107 R)
• M17: 12,482,147 km (0.072 R)
• M18: 17,111,902 km (0.088 R)
• M19: 17,256,713 km (0.112 R)
• M20: 17,402,272 km (0.081 R)
• M21: 19,292,441 km (0.105 R)
• M22: 21,398,629 km (0.061 R)
• M23: 21,735,673 km (0.108 R)
• M24: 23,474,449 km (0.1 R)
• M25: 28,831,848 km (0.035 R)
• M26: 29,036,947 km (0.088 R)
• M27: 34,027,083 km (0.118 R)
• M28: 38,557,206 km (0.044 R)
• M29: 42,272,918 km (0.084 R)
• M30: 42,803,541 km (0.098 R)
• M31: 46,501,301 km (0.085 R)
• M32: 47,066,632 km (0.083 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: 509 - 12,900 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit