🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.5 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 1 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.41

Radius: 1.42

Gravity: 1.2 G

Time & Orbit

Eccentricity (e): 0.126

Orbit Range: 0.87 AU - 1.13 AU

Year: 351 Days

Day: 28.5 Hours

Environment

Temp: 139 °C

Axial Tilt: 40 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (1)

Outer Limit: 89,412,109 km

• M1: 33,061 km (0.107 R)

Planet 2 - Terrestrial

Semi-Major Axis: 1.5 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.8

Radius: 1.27

Gravity: 1.12 G

Time & Orbit

Eccentricity (e): 0.098

Orbit Range: 1.35 AU - 1.65 AU

Year: 646 Days

Day: 18.9 Hours

Environment

Temp: -4 °C

Axial Tilt: 15.7 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Satellites (1)

Outer Limit: 89,412,109 km

• M1: 373,995 km (0.068 R)

Planet 3 - Terrestrial

Semi-Major Axis: 1.52 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.4

Radius: 1.14

Gravity: 1.08 G

Time & Orbit

Eccentricity (e): 0.01

Orbit Range: 1.5 AU - 1.54 AU

Year: 659 Days

Day: 16.9 Hours

Environment

Temp: -8 °C

Axial Tilt: 20.2 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Satellites (1)

Outer Limit: 89,412,109 km

• M1: 28,573 km (0.118 R)

Planet 4 - Terrestrial

Semi-Major Axis: 3.12 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.96

Radius: 1.73

Gravity: 1.32 G

Time & Orbit

Eccentricity (e): 0.189

Orbit Range: 2.53 AU - 3.71 AU

Year: 1937 Days

Day: 43.4 Hours

Environment

Temp: -104 °C

Axial Tilt: 12.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Terrestrial

Semi-Major Axis: 4.54 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.91

Radius: 1.3

Gravity: 1.13 G

Time & Orbit

Eccentricity (e): 0.197

Orbit Range: 3.65 AU - 5.43 AU

Year: 3400 Days

Day: 45.9 Hours

Environment

Temp: -117 °C

Axial Tilt: 13.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 6 - Terrestrial

Semi-Major Axis: 4.77 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.72

Radius: 1.24

Gravity: 1.12 G

Time & Orbit

Eccentricity (e): 0.152

Orbit Range: 4.04 AU - 5.5 AU

Year: 3661 Days

Day: 14.1 Hours

Environment

Temp: -128 °C

Axial Tilt: 29.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 7 - Terrestrial

Semi-Major Axis: 4.9 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.46

Radius: 1.82

Gravity: 1.35 G

Time & Orbit

Eccentricity (e): 0.081

Orbit Range: 4.5 AU - 5.3 AU

Year: 3812 Days

Day: 35 Hours

Environment

Temp: -132 °C

Axial Tilt: 32.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Asteroid Belt

Center: 11.45 AU

Composition

Type: Far Outer (Icy/Cometary)

A dense region of planetesimals and debris.

Boundary

Planet 8 - Ice Giant

Semi-Major Axis: 17.99 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 618.2

Radius: 4.5

Gravity: 30.53 G

Time & Orbit

Eccentricity (e): 0.241

Orbit Range: 13.65 AU - 22.33 AU

Year: 26818 Days

Day: 16.2 Hours

Environment

Temp: -190 °C

Axial Tilt: 12.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (29)

Outer Limit: 89,412,109 km

• M1: 57,146 km (0.052 R)
• M2: 919,429 km (0.093 R)
• M3: 3,821,777 km (0.107 R)
• M4: 4,545,531 km (0.081 R)
• M5: 5,521,209 km (0.077 R)
• M6: 7,210,019 km (0.079 R)
• M7: 7,615,878 km (0.065 R)
• M8: 8,198,562 km (0.06 R)
• M9: 8,417,573 km (0.099 R)
• M10: 11,292,694 km (0.036 R)
• M11: 11,839,624 km (0.073 R)
• M12: 13,209,043 km (0.066 R)
• M13: 15,003,769 km (0.106 R)
• M14: 17,310,718 km (0.053 R)
• M15: 17,945,162 km (0.093 R)
• M16: 19,941,695 km (0.081 R)
• M17: 20,139,314 km (0.104 R)
• M18: 21,146,557 km (0.062 R)
• M19: 27,415,156 km (0.082 R)
• M20: 31,233,492 km (0.074 R)
• M21: 33,826,622 km (0.047 R)
• M22: 34,390,157 km (0.057 R)
• M23: 37,004,230 km (0.069 R)
• M24: 38,512,027 km (0.101 R)
• M25: 46,150,345 km (0.082 R)
• M26: 55,125,768 km (0.05 R)
• M27: 56,693,404 km (0.1 R)
• M28: 57,888,542 km (0.069 R)
• M29: 67,170,491 km (0.071 R)

Kuiper Belt

Range: 31.2 - 56.2 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 403 - 14,085 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit