🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.33 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.65 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.18

Radius: 1.59

Gravity: 1.26 G

Time & Orbit

Eccentricity (e): 0.148

Orbit Range: 0.55 AU - 0.75 AU

Year: 198 Days

Day: 38.8 Hours

Environment

Temp: 172 °C

Axial Tilt: 13.3 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 0.92 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.92

Radius: 1.54

Gravity: 1.23 G

Time & Orbit

Eccentricity (e): 0.156

Orbit Range: 0.78 AU - 1.06 AU

Year: 334 Days

Day: 36.2 Hours

Environment

Temp: 21 °C

Axial Tilt: 36.8 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Planet 3 - Terrestrial

Semi-Major Axis: 1.18 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.45

Radius: 0.73

Gravity: 0.84 G

Time & Orbit

Eccentricity (e): 0.248

Orbit Range: 0.89 AU - 1.47 AU

Year: 485 Days

Day: 38.2 Hours

Environment

Temp: -22 °C

Axial Tilt: 63 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Planet 4 - Terrestrial

Semi-Major Axis: 2.29 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.71

Radius: 1.69

Gravity: 1.3 G

Time & Orbit

Eccentricity (e): 0.09

Orbit Range: 2.08 AU - 2.5 AU

Year: 1313 Days

Day: 28.7 Hours

Environment

Temp: -85 °C

Axial Tilt: 30 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 23,494,475 km

• M1: 39,344 km (0.112 R)

Planet 5 - Terrestrial

Semi-Major Axis: 3.29 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.9

Radius: 0.96

Gravity: 0.98 G

Time & Orbit

Eccentricity (e): 0.065

Orbit Range: 3.08 AU - 3.5 AU

Year: 2260 Days

Day: 15.1 Hours

Environment

Temp: -121 °C

Axial Tilt: 28.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 6 - Terrestrial

Semi-Major Axis: 3.49 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.06

Radius: 1.75

Gravity: 1.33 G

Time & Orbit

Eccentricity (e): 0.15

Orbit Range: 2.97 AU - 4.01 AU

Year: 2469 Days

Day: 19.7 Hours

Environment

Temp: -131 °C

Axial Tilt: 33.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 23,494,475 km

• M1: 1,481,169 km (0.065 R)

Planet 7 - Terrestrial

Semi-Major Axis: 3.62 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.79

Radius: 1.51

Gravity: 1.22 G

Time & Orbit

Eccentricity (e): 0.165

Orbit Range: 3.02 AU - 4.22 AU

Year: 2609 Days

Day: 13.9 Hours

Environment

Temp: -127 °C

Axial Tilt: 40 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 8 - Gas Giant

Semi-Major Axis: 7.6 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 128.1

Radius: 12.3

Gravity: 0.85 G

Time & Orbit

Eccentricity (e): 0.246

Orbit Range: 5.73 AU - 9.47 AU

Year: 7935 Days

Day: 10.6 Hours

Environment

Temp: -164 °C

Axial Tilt: 4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 23,494,475 km

• M1: 155,582 km (0.06 R)
• M2: 815,159 km (0.109 R)
• M3: 1,306,737 km (0.111 R)
• M4: 1,773,483 km (0.066 R)
• M5: 2,469,711 km (0.09 R)
• M6: 3,828,359 km (0.078 R)
• M7: 4,274,161 km (0.029 R)
• M8: 5,020,355 km (0.046 R)
• M9: 5,503,257 km (0.111 R)
• M10: 6,652,318 km (0.058 R)
• M11: 7,173,218 km (0.109 R)
• M12: 8,056,593 km (0.077 R)
• M13: 8,649,150 km (0.082 R)
• M14: 9,611,514 km (0.073 R)
• M15: 10,358,905 km (0.03 R)
• M16: 11,060,219 km (0.05 R)
• M17: 13,212,035 km (0.107 R)
• M18: 14,741,973 km (0.069 R)
• M19: 15,682,943 km (0.093 R)
• M20: 18,151,458 km (0.069 R)
• M21: 20,355,633 km (0.068 R)
• M22: 21,720,713 km (0.101 R)

Kuiper Belt

Range: 30 - 53 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 459 - 12,129 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit