🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.3 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.6 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.65

Radius: 0.84

Gravity: 0.92 G

Time & Orbit

Eccentricity (e): 0.233

Orbit Range: 0.46 AU - 0.74 AU

Year: 163 Days

Day: 43.7 Hours

Environment

Temp: 211 °C

Axial Tilt: 37.8 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 0.64 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.86

Radius: 1.28

Gravity: 1.14 G

Time & Orbit

Eccentricity (e): 0.067

Orbit Range: 0.6 AU - 0.68 AU

Year: 180 Days

Day: 37.3 Hours

Environment

Temp: 182 °C

Axial Tilt: 9.5 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (1)

Outer Limit: 31,748,178 km

• M1: 229,633 km (0.083 R)

Planet 3 - Terrestrial

Semi-Major Axis: 0.74 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.27

Radius: 1.39

Gravity: 1.17 G

Time & Orbit

Eccentricity (e): 0.041

Orbit Range: 0.71 AU - 0.77 AU

Year: 224 Days

Day: 30.4 Hours

Environment

Temp: 154 °C

Axial Tilt: 35 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 4 - Terrestrial

Semi-Major Axis: 1.21 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.4

Radius: 1.63

Gravity: 1.28 G

Time & Orbit

Eccentricity (e): 0.061

Orbit Range: 1.14 AU - 1.28 AU

Year: 468 Days

Day: 31.2 Hours

Environment

Temp: 15 °C

Axial Tilt: 31 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Planet 5 - Terrestrial

Semi-Major Axis: 1.31 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.4

Radius: 0.69

Gravity: 0.84 G

Time & Orbit

Eccentricity (e): 0.149

Orbit Range: 1.11 AU - 1.51 AU

Year: 527 Days

Day: 42.5 Hours

Environment

Temp: -2 °C

Axial Tilt: 28.3 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Planet 6 - Terrestrial

Semi-Major Axis: 2.3 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.79

Radius: 1.7

Gravity: 1.31 G

Time & Orbit

Eccentricity (e): 0.178

Orbit Range: 1.89 AU - 2.71 AU

Year: 1226 Days

Day: 42.5 Hours

Environment

Temp: -59 °C

Axial Tilt: 13.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 7 - Terrestrial

Semi-Major Axis: 4.77 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.87

Radius: 1.72

Gravity: 1.31 G

Time & Orbit

Eccentricity (e): 0.072

Orbit Range: 4.43 AU - 5.11 AU

Year: 3661 Days

Day: 18.2 Hours

Environment

Temp: -137 °C

Axial Tilt: 42.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Asteroid Belt

Center: 7.23 AU

Composition

Type: Main (Rocky/Icy Mix)

A dense region of planetesimals and debris.

Boundary

Planet 8 - Gas Giant

Semi-Major Axis: 9.69 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 177.1

Radius: 14.5

Gravity: 0.84 G

Time & Orbit

Eccentricity (e): 0.147

Orbit Range: 8.27 AU - 11.11 AU

Year: 10601 Days

Day: 9.8 Hours

Environment

Temp: -173 °C

Axial Tilt: 41.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 31,748,178 km

• M1: 324,777 km (0.064 R)
• M2: 781,200 km (0.114 R)
• M3: 1,604,587 km (0.097 R)
• M4: 2,887,837 km (0.026 R)
• M5: 4,270,122 km (0.04 R)
• M6: 5,904,329 km (0.036 R)
• M7: 7,067,452 km (0.085 R)
• M8: 11,431,072 km (0.102 R)
• M9: 12,920,618 km (0.067 R)
• M10: 16,101,817 km (0.052 R)
• M11: 18,165,221 km (0.103 R)
• M12: 27,502,970 km (0.109 R)
• M13: 28,813,597 km (0.088 R)

Kuiper Belt

Range: 31.2 - 53.2 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 498 - 14,988 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit