🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.26 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.51 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.54

Radius: 1.83

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.066

Orbit Range: 0.48 AU - 0.54 AU

Year: 235 Days

Day: 47.9 Hours

Environment

Temp: -115 °C

Axial Tilt: 34.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.56 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.83

Radius: 1.52

Gravity: 1.22 G

Time & Orbit

Eccentricity (e): 0.03

Orbit Range: 0.54 AU - 0.58 AU

Year: 271 Days

Day: 44.9 Hours

Environment

Temp: -128 °C

Axial Tilt: 46.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Terrestrial

Semi-Major Axis: 0.56 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.05

Radius: 1.33

Gravity: 1.16 G

Time & Orbit

Eccentricity (e): 0.171

Orbit Range: 0.46 AU - 0.66 AU

Year: 271 Days

Day: 16.8 Hours

Environment

Temp: -130 °C

Axial Tilt: 34.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 55,401,862 km

• M1: 120,576 km (0.085 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.78 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 866.5

Radius: 14.7

Gravity: 4.01 G

Time & Orbit

Eccentricity (e): 0.074

Orbit Range: 0.72 AU - 0.84 AU

Year: 445 Days

Day: 7.4 Hours

Environment

Temp: -140 °C

Axial Tilt: 4.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 55,401,862 km

• M1: 182,809 km (0.103 R)
• M2: 658,081 km (0.039 R)
• M3: 1,140,534 km (0.116 R)
• M4: 1,646,923 km (0.073 R)
• M5: 2,278,675 km (0.113 R)
• M6: 2,766,663 km (0.12 R)
• M7: 3,708,531 km (0.105 R)
• M8: 4,686,901 km (0.104 R)
• M9: 5,172,496 km (0.114 R)
• M10: 5,639,989 km (0.12 R)
• M11: 6,375,861 km (0.094 R)

Planet 5 - Gas Giant

Semi-Major Axis: 0.8 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 397.4

Radius: 12.4

Gravity: 2.58 G

Time & Orbit

Eccentricity (e): 0.005

Orbit Range: 0.8 AU - 0.8 AU

Year: 462 Days

Day: 11.5 Hours

Environment

Temp: -155 °C

Axial Tilt: 31.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 55,401,862 km

• M1: 154,235 km (0.071 R)
• M2: 612,304 km (0.118 R)
• M3: 1,265,448 km (0.078 R)
• M4: 1,830,330 km (0.1 R)
• M5: 2,294,532 km (0.066 R)
• M6: 2,681,991 km (0.085 R)
• M7: 3,285,917 km (0.093 R)
• M8: 3,966,737 km (0.079 R)
• M9: 4,354,495 km (0.083 R)
• M10: 4,767,834 km (0.094 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.91 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 310.1

Radius: 10.8

Gravity: 2.66 G

Time & Orbit

Eccentricity (e): 0.092

Orbit Range: 1.73 AU - 2.09 AU

Year: 1704 Days

Day: 14.8 Hours

Environment

Temp: -190 °C

Axial Tilt: 20.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 55,401,862 km

• M1: 136,433 km (0.106 R)
• M2: 581,487 km (0.083 R)
• M3: 921,822 km (0.057 R)
• M4: 1,697,188 km (0.038 R)
• M5: 2,304,256 km (0.108 R)
• M6: 2,811,692 km (0.072 R)
• M7: 4,169,592 km (0.041 R)
• M8: 4,683,012 km (0.079 R)
• M9: 5,398,987 km (0.081 R)
• M10: 5,772,832 km (0.08 R)
• M11: 8,122,416 km (0.065 R)
• M12: 8,698,518 km (0.108 R)
• M13: 10,850,932 km (0.037 R)

Planet 7 - Ice Giant

Semi-Major Axis: 8.89 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 361.1

Radius: 3.3

Gravity: 33.16 G

Time & Orbit

Eccentricity (e): 0.172

Orbit Range: 7.36 AU - 10.42 AU

Year: 17115 Days

Day: 22.5 Hours

Environment

Temp: -224 °C

Axial Tilt: 6.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 55,401,862 km

• M1: 43,234 km (0.054 R)
• M2: 397,332 km (0.062 R)
• M3: 553,662 km (0.066 R)
• M4: 948,301 km (0.086 R)
• M5: 1,363,435 km (0.077 R)
• M6: 2,334,176 km (0.044 R)
• M7: 3,151,279 km (0.076 R)
• M8: 3,745,931 km (0.113 R)
• M9: 4,535,359 km (0.047 R)
• M10: 4,724,750 km (0.08 R)
• M11: 5,255,822 km (0.101 R)
• M12: 7,298,581 km (0.109 R)
• M13: 9,002,800 km (0.061 R)
• M14: 9,556,462 km (0.038 R)
• M15: 11,820,476 km (0.088 R)
• M16: 12,483,643 km (0.071 R)
• M17: 25,020,842 km (0.077 R)
• M18: 28,705,887 km (0.112 R)
• M19: 36,874,678 km (0.103 R)
• M20: 37,511,217 km (0.042 R)
• M21: 41,211,670 km (0.042 R)
• M22: 54,083,819 km (0.098 R)

Kuiper Belt

Range: 30 - 51 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 280 - 10,872 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit