🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.3 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.59 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.79

Radius: 1.7

Gravity: 1.31 G

Time & Orbit

Eccentricity (e): 0.169

Orbit Range: 0.49 AU - 0.69 AU

Year: 293 Days

Day: 28.8 Hours

Environment

Temp: -135 °C

Axial Tilt: 5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.65 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.56

Radius: 1.19

Gravity: 1.1 G

Time & Orbit

Eccentricity (e): 0.141

Orbit Range: 0.56 AU - 0.74 AU

Year: 338 Days

Day: 18.7 Hours

Environment

Temp: -124 °C

Axial Tilt: 10.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.7 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 351

Radius: 14.2

Gravity: 1.74 G

Time & Orbit

Eccentricity (e): 0.076

Orbit Range: 0.65 AU - 0.75 AU

Year: 378 Days

Day: 10.1 Hours

Environment

Temp: -138 °C

Axial Tilt: 4.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 20,397,075 km

• M1: 204,650 km (0.08 R)
• M2: 664,215 km (0.068 R)
• M3: 1,126,622 km (0.104 R)
• M4: 1,723,667 km (0.077 R)
• M5: 2,314,578 km (0.033 R)
• M6: 2,840,564 km (0.062 R)
• M7: 3,499,693 km (0.081 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.9 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 27.3

Radius: 9.5

Gravity: 0.3 G

Time & Orbit

Eccentricity (e): 0.042

Orbit Range: 0.86 AU - 0.94 AU

Year: 551 Days

Day: 11.5 Hours

Environment

Temp: -149 °C

Axial Tilt: 5.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (4)

Outer Limit: 20,397,075 km

• M1: 118,182 km (0.077 R)
• M2: 507,586 km (0.06 R)
• M3: 1,130,960 km (0.078 R)
• M4: 2,351,379 km (0.117 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.64 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 688.1

Radius: 14.9

Gravity: 3.1 G

Time & Orbit

Eccentricity (e): 0.146

Orbit Range: 2.25 AU - 3.03 AU

Year: 2770 Days

Day: 11.7 Hours

Environment

Temp: -191 °C

Axial Tilt: 31.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 20,397,075 km

• M1: 185,352 km (0.113 R)
• M2: 764,445 km (0.104 R)
• M3: 1,682,677 km (0.116 R)
• M4: 2,165,429 km (0.086 R)
• M5: 2,696,651 km (0.059 R)
• M6: 3,177,309 km (0.08 R)
• M7: 5,143,474 km (0.114 R)
• M8: 6,129,174 km (0.12 R)
• M9: 6,853,976 km (0.029 R)
• M10: 8,080,379 km (0.064 R)
• M11: 8,576,446 km (0.097 R)
• M12: 9,448,602 km (0.097 R)
• M13: 10,188,363 km (0.098 R)
• M14: 13,586,778 km (0.105 R)
• M15: 14,870,627 km (0.086 R)
• M16: 16,182,002 km (0.073 R)
• M17: 17,405,114 km (0.072 R)
• M18: 18,918,745 km (0.103 R)
• M19: 19,796,735 km (0.112 R)

Kuiper Belt

Range: 30 - 49 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 516 - 18,526 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit