🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.27 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.54 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.29

Radius: 0.61

Gravity: 0.78 G

Time & Orbit

Eccentricity (e): 0.093

Orbit Range: 0.49 AU - 0.59 AU

Year: 151 Days

Day: 29.1 Hours

Environment

Temp: 136 °C

Axial Tilt: 7 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 0.63 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.18

Radius: 1.59

Gravity: 1.26 G

Time & Orbit

Eccentricity (e): 0.24

Orbit Range: 0.48 AU - 0.78 AU

Year: 190 Days

Day: 26.1 Hours

Environment

Temp: 138 °C

Axial Tilt: 31.8 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 3 - Terrestrial

Semi-Major Axis: 0.94 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.47

Radius: 1.64

Gravity: 1.29 G

Time & Orbit

Eccentricity (e): 0.088

Orbit Range: 0.86 AU - 1.02 AU

Year: 347 Days

Day: 44.1 Hours

Environment

Temp: 12 °C

Axial Tilt: 48.6 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Planet 4 - Terrestrial

Semi-Major Axis: 0.96 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.94

Radius: 1.73

Gravity: 1.32 G

Time & Orbit

Eccentricity (e): 0.128

Orbit Range: 0.84 AU - 1.08 AU

Year: 358 Days

Day: 25.1 Hours

Environment

Temp: 15 °C

Axial Tilt: 18.4 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Satellites (1)

Outer Limit: 44,344,288 km

• M1: 50,863 km (0.07 R)

Planet 5 - Terrestrial

Semi-Major Axis: 1.04 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.17

Radius: 0.49

Gravity: 0.71 G

Time & Orbit

Eccentricity (e): 0.05

Orbit Range: 0.99 AU - 1.09 AU

Year: 404 Days

Day: 13.1 Hours

Environment

Temp: -4 °C

Axial Tilt: 17.5 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Planet 6 - Terrestrial

Semi-Major Axis: 3.48 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.9

Radius: 1.29

Gravity: 1.14 G

Time & Orbit

Eccentricity (e): 0.123

Orbit Range: 3.05 AU - 3.91 AU

Year: 2472 Days

Day: 28.9 Hours

Environment

Temp: -133 °C

Axial Tilt: 45.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 7 - Gas Giant

Semi-Major Axis: 7.55 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 869.1

Radius: 14.5

Gravity: 4.13 G

Time & Orbit

Eccentricity (e): 0.119

Orbit Range: 6.65 AU - 8.45 AU

Year: 7900 Days

Day: 13.9 Hours

Environment

Temp: -178 °C

Axial Tilt: 0 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (31)

Outer Limit: 44,344,288 km

• M1: 180,714 km (0.105 R)
• M2: 731,833 km (0.086 R)
• M3: 1,235,379 km (0.116 R)
• M4: 1,752,988 km (0.095 R)
• M5: 2,527,905 km (0.041 R)
• M6: 3,028,011 km (0.078 R)
• M7: 3,916,771 km (0.072 R)
• M8: 4,794,911 km (0.05 R)
• M9: 5,376,099 km (0.109 R)
• M10: 5,935,894 km (0.105 R)
• M11: 7,329,548 km (0.083 R)
• M12: 7,936,167 km (0.118 R)
• M13: 8,931,591 km (0.057 R)
• M14: 9,672,101 km (0.108 R)
• M15: 10,403,186 km (0.057 R)
• M16: 11,921,155 km (0.12 R)
• M17: 12,819,640 km (0.069 R)
• M18: 17,431,593 km (0.112 R)
• M19: 18,149,214 km (0.045 R)
• M20: 19,187,124 km (0.085 R)
• M21: 20,897,476 km (0.075 R)
• M22: 22,371,015 km (0.076 R)
• M23: 22,877,105 km (0.059 R)
• M24: 23,477,441 km (0.074 R)
• M25: 24,530,909 km (0.072 R)
• M26: 27,016,328 km (0.07 R)
• M27: 30,072,164 km (0.057 R)
• M28: 32,054,934 km (0.046 R)
• M29: 32,698,953 km (0.069 R)
• M30: 40,363,001 km (0.093 R)
• M31: 44,344,250 km (0.073 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: 442 - 19,415 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit