🌌 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: 0.63 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.29

Radius: 1.61

Gravity: 1.27 G

Time & Orbit

Eccentricity (e): 0.171

Orbit Range: 0.52 AU - 0.74 AU

Year: 318 Days

Day: 20 Hours

Environment

Temp: -134 °C

Axial Tilt: 24.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.89 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 100

Radius: 12.8

Gravity: 0.61 G

Time & Orbit

Eccentricity (e): 0.054

Orbit Range: 0.84 AU - 0.94 AU

Year: 534 Days

Day: 12.9 Hours

Environment

Temp: -147 °C

Axial Tilt: 28.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 69,687,191 km

• M1: 159,172 km (0.111 R)
• M2: 566,378 km (0.087 R)
• M3: 1,006,046 km (0.091 R)
• M4: 1,527,993 km (0.067 R)
• M5: 2,010,147 km (0.104 R)
• M6: 2,457,594 km (0.114 R)
• M7: 2,953,960 km (0.106 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.08 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 514.7

Radius: 11.3

Gravity: 4.03 G

Time & Orbit

Eccentricity (e): 0.202

Orbit Range: 0.86 AU - 1.3 AU

Year: 714 Days

Day: 11.7 Hours

Environment

Temp: -157 °C

Axial Tilt: 48.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 69,687,191 km

• M1: 140,622 km (0.113 R)
• M2: 510,129 km (0.113 R)
• M3: 880,234 km (0.085 R)
• M4: 1,248,245 km (0.119 R)
• M5: 2,123,841 km (0.097 R)
• M6: 2,620,805 km (0.084 R)
• M7: 3,219,346 km (0.067 R)
• M8: 3,658,566 km (0.112 R)
• M9: 4,642,471 km (0.081 R)
• M10: 5,205,408 km (0.052 R)
• M11: 5,776,273 km (0.057 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.17 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 59.1

Radius: 13.3

Gravity: 0.33 G

Time & Orbit

Eccentricity (e): 0.027

Orbit Range: 1.14 AU - 1.2 AU

Year: 805 Days

Day: 10.5 Hours

Environment

Temp: -169 °C

Axial Tilt: 36.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 69,687,191 km

• M1: 165,455 km (0.08 R)
• M2: 604,974 km (0.094 R)
• M3: 1,111,213 km (0.079 R)
• M4: 1,559,558 km (0.109 R)
• M5: 2,367,386 km (0.106 R)
• M6: 3,053,293 km (0.066 R)
• M7: 3,747,127 km (0.095 R)

Planet 5 - Ice Giant

Semi-Major Axis: 11.25 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 365.7

Radius: 6.5

Gravity: 8.66 G

Time & Orbit

Eccentricity (e): 0.173

Orbit Range: 9.3 AU - 13.2 AU

Year: 23992 Days

Day: 20.8 Hours

Environment

Temp: -231 °C

Axial Tilt: 19 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (31)

Outer Limit: 69,687,191 km

• M1: 81,381 km (0.073 R)
• M2: 514,467 km (0.106 R)
• M3: 1,290,132 km (0.034 R)
• M4: 1,497,026 km (0.071 R)
• M5: 1,709,156 km (0.034 R)
• M6: 1,922,931 km (0.104 R)
• M7: 2,963,983 km (0.119 R)
• M8: 3,437,909 km (0.107 R)
• M9: 3,664,101 km (0.107 R)
• M10: 4,535,658 km (0.053 R)
• M11: 5,461,968 km (0.099 R)
• M12: 12,044,723 km (0.093 R)
• M13: 13,313,612 km (0.047 R)
• M14: 13,873,707 km (0.089 R)
• M15: 16,114,383 km (0.058 R)
• M16: 16,669,990 km (0.094 R)
• M17: 20,001,535 km (0.115 R)
• M18: 25,099,082 km (0.087 R)
• M19: 34,010,029 km (0.073 R)
• M20: 38,882,282 km (0.093 R)
• M21: 39,308,187 km (0.114 R)
• M22: 39,593,769 km (0.075 R)
• M23: 40,169,272 km (0.091 R)
• M24: 43,282,105 km (0.075 R)
• M25: 44,354,422 km (0.102 R)
• M26: 48,165,428 km (0.085 R)
• M27: 50,150,293 km (0.084 R)
• M28: 55,170,947 km (0.12 R)
• M29: 59,196,027 km (0.066 R)
• M30: 61,471,859 km (0.113 R)
• M31: 63,805,287 km (0.088 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: 304 - 14,076 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit