🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.27 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.54 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.99

Radius: 1

Gravity: 0.99 G

Time & Orbit

Eccentricity (e): 0.25

Orbit Range: 0.41 AU - 0.68 AU

Year: 252 Days

Day: 35.5 Hours

Environment

Temp: -120 °C

Axial Tilt: 1.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.63 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.02

Radius: 1.56

Gravity: 1.24 G

Time & Orbit

Eccentricity (e): 0.081

Orbit Range: 0.58 AU - 0.68 AU

Year: 318 Days

Day: 42.8 Hours

Environment

Temp: -139 °C

Axial Tilt: 16.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.94 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 504

Radius: 10.7

Gravity: 4.4 G

Time & Orbit

Eccentricity (e): 0.143

Orbit Range: 0.81 AU - 1.07 AU

Year: 579 Days

Day: 8.6 Hours

Environment

Temp: -147 °C

Axial Tilt: 2.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 80,250,514 km

• M1: 133,142 km (0.032 R)
• M2: 503,846 km (0.088 R)
• M3: 848,220 km (0.036 R)
• M4: 1,320,800 km (0.109 R)
• M5: 1,667,717 km (0.106 R)
• M6: 2,042,011 km (0.099 R)
• M7: 3,121,808 km (0.114 R)
• M8: 3,935,322 km (0.09 R)
• M9: 4,577,246 km (0.068 R)
• M10: 5,254,625 km (0.048 R)
• M11: 5,872,016 km (0.059 R)
• M12: 6,216,988 km (0.116 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.55 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 336.1

Radius: 12

Gravity: 2.33 G

Time & Orbit

Eccentricity (e): 0.244

Orbit Range: 1.17 AU - 1.93 AU

Year: 1227 Days

Day: 10.7 Hours

Environment

Temp: -180 °C

Axial Tilt: 18.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 80,250,514 km

• M1: 149,299 km (0.098 R)
• M2: 681,717 km (0.075 R)
• M3: 1,072,766 km (0.028 R)
• M4: 1,595,611 km (0.103 R)
• M5: 2,501,276 km (0.053 R)
• M6: 3,012,153 km (0.113 R)
• M7: 3,563,571 km (0.108 R)
• M8: 3,947,439 km (0.057 R)
• M9: 6,094,318 km (0.054 R)
• M10: 7,585,659 km (0.092 R)

Planet 5 - Gas Giant

Semi-Major Axis: 5.07 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 120.6

Radius: 13.9

Gravity: 0.62 G

Time & Orbit

Eccentricity (e): 0.244

Orbit Range: 3.83 AU - 6.31 AU

Year: 7258 Days

Day: 8.5 Hours

Environment

Temp: -215 °C

Axial Tilt: 8.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 80,250,514 km

• M1: 172,935 km (0.032 R)
• M2: 858,542 km (0.082 R)
• M3: 1,969,157 km (0.096 R)
• M4: 2,509,055 km (0.104 R)
• M5: 3,234,456 km (0.059 R)
• M6: 3,695,815 km (0.101 R)
• M7: 4,159,120 km (0.113 R)
• M8: 5,428,009 km (0.114 R)
• M9: 6,056,919 km (0.103 R)
• M10: 8,274,109 km (0.09 R)
• M11: 9,073,260 km (0.08 R)
• M12: 11,318,126 km (0.067 R)
• M13: 11,954,366 km (0.104 R)
• M14: 13,298,802 km (0.112 R)
• M15: 15,864,555 km (0.067 R)
• M16: 19,276,284 km (0.113 R)
• M17: 21,248,882 km (0.08 R)

Planet 6 - Ice Giant

Semi-Major Axis: 10.08 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 776.4

Radius: 4.6

Gravity: 36.69 G

Time & Orbit

Eccentricity (e): 0.131

Orbit Range: 8.76 AU - 11.4 AU

Year: 20348 Days

Day: 15.2 Hours

Environment

Temp: -221 °C

Axial Tilt: 17.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 80,250,514 km

• M1: 57,146 km (0.09 R)
• M2: 524,939 km (0.117 R)
• M3: 718,219 km (0.081 R)
• M4: 1,706,912 km (0.087 R)
• M5: 2,053,829 km (0.091 R)
• M6: 2,660,449 km (0.073 R)
• M7: 4,850,861 km (0.113 R)
• M8: 12,131,789 km (0.118 R)
• M9: 13,254,371 km (0.067 R)
• M10: 29,369,952 km (0.106 R)
• M11: 30,617,149 km (0.09 R)
• M12: 33,618,830 km (0.089 R)
• M13: 40,351,183 km (0.117 R)
• M14: 42,991,735 km (0.108 R)
• M15: 47,418,486 km (0.051 R)
• M16: 54,149,642 km (0.077 R)
• M17: 57,356,721 km (0.101 R)
• M18: 62,299,435 km (0.08 R)
• M19: 63,320,889 km (0.056 R)
• M20: 63,526,437 km (0.113 R)
• M21: 68,163,671 km (0.109 R)
• M22: 74,614,032 km (0.081 R)
• M23: 76,929,359 km (0.029 R)

Kuiper Belt

Range: 30 - 52 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 465 - 13,217 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit