🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.31 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.62 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.7

Radius: 0.87

Gravity: 0.92 G

Time & Orbit

Eccentricity (e): 0.073

Orbit Range: 0.57 AU - 0.67 AU

Year: 310 Days

Day: 30.9 Hours

Environment

Temp: -128 °C

Axial Tilt: 39.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.69 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 143.8

Radius: 14.7

Gravity: 0.67 G

Time & Orbit

Eccentricity (e): 0.143

Orbit Range: 0.59 AU - 0.79 AU

Year: 364 Days

Day: 6.2 Hours

Environment

Temp: -136 °C

Axial Tilt: 2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (5)

Outer Limit: 55,653,096 km

• M1: 182,809 km (0.096 R)
• M2: 749,186 km (0.086 R)
• M3: 1,311,076 km (0.118 R)
• M4: 1,814,473 km (0.089 R)
• M5: 2,289,595 km (0.08 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.88 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 553.4

Radius: 9.4

Gravity: 6.26 G

Time & Orbit

Eccentricity (e): 0.155

Orbit Range: 0.74 AU - 1.02 AU

Year: 525 Days

Day: 6.2 Hours

Environment

Temp: -156 °C

Axial Tilt: 25.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 55,653,096 km

• M1: 116,986 km (0.047 R)
• M2: 410,646 km (0.1 R)
• M3: 779,255 km (0.098 R)
• M4: 1,189,602 km (0.095 R)
• M5: 1,659,788 km (0.115 R)
• M6: 2,134,462 km (0.085 R)
• M7: 2,887,987 km (0.03 R)
• M8: 3,226,078 km (0.11 R)
• M9: 3,692,375 km (0.08 R)
• M10: 4,316,347 km (0.067 R)
• M11: 5,332,566 km (0.115 R)
• M12: 5,687,412 km (0.111 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.18 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 549.2

Radius: 14

Gravity: 2.8 G

Time & Orbit

Eccentricity (e): 0.094

Orbit Range: 1.07 AU - 1.29 AU

Year: 815 Days

Day: 10.8 Hours

Environment

Temp: -169 °C

Axial Tilt: 3.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 55,653,096 km

• M1: 174,132 km (0.097 R)
• M2: 660,325 km (0.108 R)
• M3: 1,144,274 km (0.1 R)
• M4: 1,644,529 km (0.098 R)
• M5: 2,785,512 km (0.108 R)
• M6: 3,336,481 km (0.099 R)
• M7: 3,786,322 km (0.108 R)
• M8: 4,418,074 km (0.107 R)
• M9: 5,351,116 km (0.088 R)
• M10: 5,855,410 km (0.071 R)
• M11: 6,661,144 km (0.097 R)
• M12: 7,608,548 km (0.06 R)
• M13: 8,054,948 km (0.03 R)

Planet 5 - Ice Giant

Semi-Major Axis: 9.32 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 327.6

Radius: 5.7

Gravity: 10.08 G

Time & Orbit

Eccentricity (e): 0.023

Orbit Range: 9.11 AU - 9.53 AU

Year: 18091 Days

Day: 16.4 Hours

Environment

Temp: -230 °C

Axial Tilt: 45.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 55,653,096 km

• M1: 72,854 km (0.116 R)
• M2: 258,505 km (0.08 R)
• M3: 1,808,189 km (0.093 R)
• M4: 2,840,864 km (0.105 R)
• M5: 4,741,355 km (0.107 R)
• M6: 9,118,140 km (0.106 R)
• M7: 10,202,575 km (0.116 R)
• M8: 12,379,224 km (0.079 R)
• M9: 14,235,434 km (0.114 R)
• M10: 16,269,516 km (0.07 R)
• M11: 19,053,982 km (0.041 R)
• M12: 20,472,917 km (0.104 R)
• M13: 24,566,514 km (0.086 R)
• M14: 28,422,399 km (0.046 R)
• M15: 29,282,586 km (0.09 R)
• M16: 30,605,181 km (0.113 R)
• M17: 33,487,483 km (0.12 R)
• M18: 35,919,945 km (0.063 R)
• M19: 36,420,050 km (0.115 R)
• M20: 36,798,234 km (0.064 R)
• M21: 48,178,593 km (0.039 R)
• M22: 49,708,979 km (0.044 R)
• M23: 52,064,846 km (0.116 R)

Kuiper Belt

Range: 30 - 49 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 536 - 12,130 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit