🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.49 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.98 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.8

Radius: 0.91

Gravity: 0.97 G

Time & Orbit

Eccentricity (e): 0.132

Orbit Range: 0.85 AU - 1.11 AU

Year: 284 Days

Day: 24.6 Hours

Environment

Temp: 220 °C

Axial Tilt: 12.1 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 3.66 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.49

Radius: 1.44

Gravity: 1.2 G

Time & Orbit

Eccentricity (e): 0.223

Orbit Range: 2.84 AU - 4.48 AU

Year: 2048 Days

Day: 24.2 Hours

Environment

Temp: -56 °C

Axial Tilt: 23.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Terrestrial

Semi-Major Axis: 4.49 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.31

Radius: 1.4

Gravity: 1.18 G

Time & Orbit

Eccentricity (e): 0.211

Orbit Range: 3.54 AU - 5.44 AU

Year: 2782 Days

Day: 43.2 Hours

Environment

Temp: -61 °C

Axial Tilt: 43.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Terrestrial

Semi-Major Axis: 6.53 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.44

Radius: 0.72

Gravity: 0.85 G

Time & Orbit

Eccentricity (e): 0.098

Orbit Range: 5.89 AU - 7.17 AU

Year: 4880 Days

Day: 13 Hours

Environment

Temp: -97 °C

Axial Tilt: 3.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Terrestrial

Semi-Major Axis: 8.33 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.24

Radius: 1.38

Gravity: 1.18 G

Time & Orbit

Eccentricity (e): 0.171

Orbit Range: 6.91 AU - 9.75 AU

Year: 7031 Days

Day: 42.5 Hours

Environment

Temp: -113 °C

Axial Tilt: 11.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 76,066,452 km

• M1: 250,128 km (0.059 R)
• M2: 3,037,734 km (0.109 R)

Planet 6 - Terrestrial

Semi-Major Axis: 9.44 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.55

Radius: 1.66

Gravity: 1.29 G

Time & Orbit

Eccentricity (e): 0.135

Orbit Range: 8.17 AU - 10.71 AU

Year: 8482 Days

Day: 37.3 Hours

Environment

Temp: -138 °C

Axial Tilt: 42.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 76,066,452 km

• M1: 184,305 km (0.113 R)

Planet 7 - Gas Giant

Semi-Major Axis: 16.13 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 762.8

Radius: 8.2

Gravity: 11.34 G

Time & Orbit

Eccentricity (e): 0.179

Orbit Range: 13.24 AU - 19.02 AU

Year: 18944 Days

Day: 5.2 Hours

Environment

Temp: -164 °C

Axial Tilt: 6.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 76,066,452 km

• M1: 102,026 km (0.08 R)
• M2: 509,082 km (0.117 R)
• M3: 785,538 km (0.094 R)
• M4: 2,499,032 km (0.101 R)
• M5: 3,949,833 km (0.099 R)
• M6: 5,933,500 km (0.101 R)
• M7: 10,721,679 km (0.046 R)
• M8: 22,643,732 km (0.119 R)
• M9: 23,464,576 km (0.103 R)
• M10: 24,840,577 km (0.116 R)
• M11: 25,165,653 km (0.078 R)
• M12: 28,811,503 km (0.097 R)
• M13: 33,186,044 km (0.114 R)
• M14: 40,772,451 km (0.078 R)
• M15: 41,073,591 km (0.104 R)
• M16: 44,805,609 km (0.07 R)
• M17: 49,780,636 km (0.057 R)
• M18: 56,408,121 km (0.112 R)
• M19: 66,265,873 km (0.044 R)
• M20: 69,862,505 km (0.063 R)
• M21: 73,142,139 km (0.114 R)

Kuiper Belt

Range: 37.5 - 55.5 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 533 - 10,771 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit