🌌 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: 1.13

Radius: 1.05

Gravity: 1.02 G

Time & Orbit

Eccentricity (e): 0.103

Orbit Range: 0.54 AU - 0.66 AU

Year: 169 Days

Day: 39.2 Hours

Environment

Temp: 144 °C

Axial Tilt: 34.9 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 1.26 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.13

Radius: 1.35

Gravity: 1.17 G

Time & Orbit

Eccentricity (e): 0.023

Orbit Range: 1.23 AU - 1.29 AU

Year: 514 Days

Day: 40.1 Hours

Environment

Temp: -3 °C

Axial Tilt: 19.7 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Planet 3 - Terrestrial

Semi-Major Axis: 1.33 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.17

Radius: 1.77

Gravity: 1.33 G

Time & Orbit

Eccentricity (e): 0.151

Orbit Range: 1.13 AU - 1.53 AU

Year: 557 Days

Day: 38.5 Hours

Environment

Temp: 1 °C

Axial Tilt: 75.4 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Satellites (1)

Outer Limit: 30,280,350 km

• M1: 86,019 km (0.076 R)

Planet 4 - Terrestrial

Semi-Major Axis: 1.5 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.42

Radius: 1.81

Gravity: 1.35 G

Time & Orbit

Eccentricity (e): 0.073

Orbit Range: 1.39 AU - 1.61 AU

Year: 668 Days

Day: 44.9 Hours

Environment

Temp: -35 °C

Axial Tilt: 39 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 30,280,350 km

• M1: 42,486 km (0.06 R)

Planet 5 - Terrestrial

Semi-Major Axis: 1.53 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.71

Radius: 1.24

Gravity: 1.11 G

Time & Orbit

Eccentricity (e): 0.092

Orbit Range: 1.39 AU - 1.67 AU

Year: 688 Days

Day: 12.9 Hours

Environment

Temp: -30 °C

Axial Tilt: 33.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 6 - Terrestrial

Semi-Major Axis: 1.69 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.59

Radius: 0.81

Gravity: 0.9 G

Time & Orbit

Eccentricity (e): 0.154

Orbit Range: 1.43 AU - 1.95 AU

Year: 798 Days

Day: 42.3 Hours

Environment

Temp: -37 °C

Axial Tilt: 32.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 7 - Terrestrial

Semi-Major Axis: 3.9 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.62

Radius: 1.21

Gravity: 1.11 G

Time & Orbit

Eccentricity (e): 0.024

Orbit Range: 3.81 AU - 3.99 AU

Year: 2799 Days

Day: 24.9 Hours

Environment

Temp: -114 °C

Axial Tilt: 14.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 8 - Gas Giant

Semi-Major Axis: 8.13 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 243.3

Radius: 11.7

Gravity: 1.78 G

Time & Orbit

Eccentricity (e): 0.175

Orbit Range: 6.71 AU - 9.55 AU

Year: 8425 Days

Day: 9.6 Hours

Environment

Temp: -174 °C

Axial Tilt: 4.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 30,280,350 km

• M1: 148,700 km (0.1 R)
• M2: 588,668 km (0.042 R)
• M3: 1,382,883 km (0.105 R)
• M4: 2,575,028 km (0.066 R)
• M5: 3,478,150 km (0.07 R)
• M6: 6,885,092 km (0.108 R)
• M7: 9,249,636 km (0.079 R)
• M8: 9,620,789 km (0.096 R)
• M9: 11,487,321 km (0.064 R)
• M10: 12,656,279 km (0.104 R)
• M11: 14,227,206 km (0.093 R)
• M12: 15,401,550 km (0.118 R)
• M13: 16,398,769 km (0.114 R)

Kuiper Belt

Range: 30.2 - 52.2 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 301 - 19,882 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit