🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.3 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.6 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.42

Radius: 1.42

Gravity: 1.2 G

Time & Orbit

Eccentricity (e): 0.126

Orbit Range: 0.52 AU - 0.68 AU

Year: 300 Days

Day: 42.2 Hours

Environment

Temp: -137 °C

Axial Tilt: 12.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 63,703,278 km

• M1: 33,959 km (0.115 R)
• M2: 444,306 km (0.067 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.8 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 80.4

Radius: 9.3

Gravity: 0.93 G

Time & Orbit

Eccentricity (e): 0.101

Orbit Range: 0.72 AU - 0.88 AU

Year: 462 Days

Day: 15 Hours

Environment

Temp: -141 °C

Axial Tilt: 31.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 63,703,278 km

• M1: 115,639 km (0.047 R)
• M2: 508,034 km (0.104 R)
• M3: 808,277 km (0.06 R)
• M4: 1,164,619 km (0.099 R)
• M5: 2,116,361 km (0.1 R)
• M6: 2,800,921 km (0.108 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.88 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 827.8

Radius: 11.5

Gravity: 6.26 G

Time & Orbit

Eccentricity (e): 0.088

Orbit Range: 0.8 AU - 0.96 AU

Year: 533 Days

Day: 8 Hours

Environment

Temp: -154 °C

Axial Tilt: 20.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 63,703,278 km

• M1: 143,016 km (0.06 R)
• M2: 531,970 km (0.089 R)
• M3: 1,204,263 km (0.065 R)
• M4: 1,751,941 km (0.036 R)
• M5: 2,125,786 km (0.092 R)
• M6: 2,877,814 km (0.032 R)
• M7: 4,344,173 km (0.073 R)
• M8: 5,555,167 km (0.115 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.66 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 431.1

Radius: 13.5

Gravity: 2.37 G

Time & Orbit

Eccentricity (e): 0.065

Orbit Range: 1.55 AU - 1.77 AU

Year: 1381 Days

Day: 14.7 Hours

Environment

Temp: -180 °C

Axial Tilt: 25 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 63,703,278 km

• M1: 167,849 km (0.081 R)
• M2: 991,684 km (0.111 R)
• M3: 1,822,700 km (0.056 R)
• M4: 2,342,553 km (0.117 R)
• M5: 4,052,008 km (0.039 R)
• M6: 4,893,047 km (0.103 R)
• M7: 6,504,515 km (0.047 R)
• M8: 7,382,655 km (0.109 R)
• M9: 7,915,223 km (0.088 R)
• M10: 9,143,571 km (0.065 R)
• M11: 9,639,488 km (0.072 R)
• M12: 10,061,205 km (0.031 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.84 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 855.1

Radius: 10.7

Gravity: 7.47 G

Time & Orbit

Eccentricity (e): 0.24

Orbit Range: 1.4 AU - 2.28 AU

Year: 1612 Days

Day: 14.5 Hours

Environment

Temp: -183 °C

Axial Tilt: 35.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 63,703,278 km

• M1: 133,142 km (0.104 R)
• M2: 643,570 km (0.063 R)
• M3: 1,045,689 km (0.05 R)
• M4: 3,073,937 km (0.097 R)
• M5: 3,538,289 km (0.108 R)
• M6: 4,351,802 km (0.118 R)
• M7: 5,263,302 km (0.075 R)
• M8: 5,647,918 km (0.102 R)
• M9: 6,148,921 km (0.049 R)
• M10: 7,861,219 km (0.07 R)
• M11: 9,049,026 km (0.103 R)
• M12: 10,850,034 km (0.088 R)
• M13: 14,175,894 km (0.112 R)
• M14: 15,238,638 km (0.051 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.56 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 633.4

Radius: 11.6

Gravity: 4.71 G

Time & Orbit

Eccentricity (e): 0.053

Orbit Range: 4.32 AU - 4.8 AU

Year: 6287 Days

Day: 11.4 Hours

Environment

Temp: -207 °C

Axial Tilt: 35.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 63,703,278 km

• M1: 144,661 km (0.105 R)
• M2: 710,141 km (0.115 R)
• M3: 1,337,555 km (0.116 R)
• M4: 1,763,161 km (0.112 R)
• M5: 2,411,368 km (0.107 R)
• M6: 2,838,769 km (0.086 R)
• M7: 6,137,552 km (0.062 R)
• M8: 7,369,341 km (0.049 R)
• M9: 10,780,621 km (0.09 R)
• M10: 13,639,885 km (0.088 R)
• M11: 14,426,919 km (0.098 R)
• M12: 17,421,719 km (0.116 R)
• M13: 18,892,416 km (0.051 R)
• M14: 20,662,159 km (0.093 R)

Planet 7 - Ice Giant

Semi-Major Axis: 9.91 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 396.3

Radius: 5.7

Gravity: 12.2 G

Time & Orbit

Eccentricity (e): 0.182

Orbit Range: 8.11 AU - 11.71 AU

Year: 20143 Days

Day: 18.9 Hours

Environment

Temp: -237 °C

Axial Tilt: 38.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (36)

Outer Limit: 63,703,278 km

• M1: 70,909 km (0.107 R)
• M2: 260,899 km (0.109 R)
• M3: 507,286 km (0.09 R)
• M4: 1,006,644 km (0.083 R)
• M5: 1,295,667 km (0.068 R)
• M6: 1,840,951 km (0.111 R)
• M7: 2,336,868 km (0.11 R)
• M8: 3,293,996 km (0.037 R)
• M9: 3,480,544 km (0.112 R)
• M10: 4,651,895 km (0.102 R)
• M11: 5,165,465 km (0.104 R)
• M12: 6,025,353 km (0.115 R)
• M13: 9,384,274 km (0.028 R)
• M14: 9,979,824 km (0.079 R)
• M15: 11,793,249 km (0.075 R)
• M16: 12,486,336 km (0.063 R)
• M17: 12,941,263 km (0.098 R)
• M18: 15,162,941 km (0.115 R)
• M19: 15,906,293 km (0.059 R)
• M20: 16,830,060 km (0.026 R)
• M21: 17,545,885 km (0.107 R)
• M22: 18,448,260 km (0.037 R)
• M23: 19,553,938 km (0.12 R)
• M24: 24,825,019 km (0.11 R)
• M25: 26,171,100 km (0.116 R)
• M26: 27,784,065 km (0.053 R)
• M27: 28,447,381 km (0.104 R)
• M28: 29,348,110 km (0.092 R)
• M29: 34,264,943 km (0.104 R)
• M30: 43,139,538 km (0.104 R)
• M31: 46,613,649 km (0.107 R)
• M32: 47,392,905 km (0.106 R)
• M33: 49,944,446 km (0.094 R)
• M34: 51,419,331 km (0.083 R)
• M35: 60,328,633 km (0.077 R)
• M36: 63,322,236 km (0.113 R)

Kuiper Belt

Range: 30 - 55 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 459 - 11,077 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit