🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.38 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.75 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.55

Radius: 0.79

Gravity: 0.88 G

Time & Orbit

Eccentricity (e): 0.166

Orbit Range: 0.63 AU - 0.87 AU

Year: 233 Days

Day: 20.3 Hours

Environment

Temp: 141 °C

Axial Tilt: 86 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 0.86 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.3

Radius: 1.61

Gravity: 1.27 G

Time & Orbit

Eccentricity (e): 0.061

Orbit Range: 0.81 AU - 0.91 AU

Year: 286 Days

Day: 12.1 Hours

Environment

Temp: 140 °C

Axial Tilt: 1.1 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (2)

Outer Limit: 52,071,203 km

• M1: 42,486 km (0.078 R)
• M2: 621,430 km (0.067 R)

Planet 3 - Terrestrial

Semi-Major Axis: 2.63 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.73

Radius: 1.69

Gravity: 1.31 G

Time & Orbit

Eccentricity (e): 0.237

Orbit Range: 2.01 AU - 3.25 AU

Year: 1528 Days

Day: 39 Hours

Environment

Temp: -77 °C

Axial Tilt: 7.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 52,071,203 km

• M1: 80,184 km (0.037 R)
• M2: 147,204 km (0.087 R)

Planet 4 - Terrestrial

Semi-Major Axis: 3.97 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.21

Radius: 1.59

Gravity: 1.27 G

Time & Orbit

Eccentricity (e): 0.014

Orbit Range: 3.91 AU - 4.03 AU

Year: 2833 Days

Day: 45.4 Hours

Environment

Temp: -124 °C

Axial Tilt: 28.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Terrestrial

Semi-Major Axis: 4.31 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.55

Radius: 1.83

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.08

Orbit Range: 3.97 AU - 4.65 AU

Year: 3205 Days

Day: 43.1 Hours

Environment

Temp: -129 °C

Axial Tilt: 2.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Asteroid Belt

Center: 9.57 AU

Composition

Type: Far Outer (Icy/Cometary)

A dense region of planetesimals and debris.

Boundary

Planet 6 - Ice Giant

Semi-Major Axis: 14.83 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 209.9

Radius: 3.2

Gravity: 20.5 G

Time & Orbit

Eccentricity (e): 0.224

Orbit Range: 11.51 AU - 18.15 AU

Year: 20454 Days

Day: 23 Hours

Environment

Temp: -190 °C

Axial Tilt: 1.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (30)

Outer Limit: 52,071,203 km

• M1: 40,541 km (0.07 R)
• M2: 165,006 km (0.088 R)
• M3: 648,357 km (0.11 R)
• M4: 1,375,552 km (0.059 R)
• M5: 1,713,045 km (0.108 R)
• M6: 3,977,957 km (0.068 R)
• M7: 5,686,813 km (0.052 R)
• M8: 8,324,224 km (0.107 R)
• M9: 9,177,381 km (0.056 R)
• M10: 10,244,313 km (0.118 R)
• M11: 10,563,704 km (0.03 R)
• M12: 11,908,140 km (0.104 R)
• M13: 12,320,731 km (0.039 R)
• M14: 12,560,686 km (0.111 R)
• M15: 14,131,912 km (0.094 R)
• M16: 14,461,177 km (0.101 R)
• M17: 14,661,190 km (0.118 R)
• M18: 17,506,840 km (0.062 R)
• M19: 17,658,084 km (0.104 R)
• M20: 20,699,708 km (0.042 R)
• M21: 24,166,040 km (0.101 R)
• M22: 26,679,883 km (0.051 R)
• M23: 30,768,991 km (0.11 R)
• M24: 32,904,351 km (0.091 R)
• M25: 33,949,442 km (0.083 R)
• M26: 34,896,845 km (0.09 R)
• M27: 36,596,875 km (0.065 R)
• M28: 42,570,318 km (0.087 R)
• M29: 43,810,335 km (0.087 R)
• M30: 51,915,248 km (0.102 R)

Kuiper Belt

Range: 30.6 - 56.6 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 531 - 16,095 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit