🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.28 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.56 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.42

Radius: 1.15

Gravity: 1.07 G

Time & Orbit

Eccentricity (e): 0.116

Orbit Range: 0.5 AU - 0.62 AU

Year: 271 Days

Day: 44.4 Hours

Environment

Temp: -132 °C

Axial Tilt: 8.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 36,984,201 km

• M1: 27,975 km (0.106 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.58 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.97

Radius: 0.99

Gravity: 0.99 G

Time & Orbit

Eccentricity (e): 0.066

Orbit Range: 0.54 AU - 0.62 AU

Year: 285 Days

Day: 35 Hours

Environment

Temp: -123 °C

Axial Tilt: 18.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Terrestrial

Semi-Major Axis: 0.64 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.45

Radius: 1.64

Gravity: 1.28 G

Time & Orbit

Eccentricity (e): 0.142

Orbit Range: 0.55 AU - 0.73 AU

Year: 331 Days

Day: 27.8 Hours

Environment

Temp: -127 °C

Axial Tilt: 9.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Gas Giant

Semi-Major Axis: 0.68 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 35.8

Radius: 13.4

Gravity: 0.2 G

Time & Orbit

Eccentricity (e): 0.084

Orbit Range: 0.62 AU - 0.74 AU

Year: 362 Days

Day: 8.6 Hours

Environment

Temp: -144 °C

Axial Tilt: 16.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (4)

Outer Limit: 36,984,201 km

• M1: 166,802 km (0.114 R)
• M2: 606,919 km (0.085 R)
• M3: 1,131,110 km (0.074 R)
• M4: 1,647,821 km (0.063 R)

Planet 5 - Gas Giant

Semi-Major Axis: 0.79 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 351.6

Radius: 12.4

Gravity: 2.29 G

Time & Orbit

Eccentricity (e): 0.089

Orbit Range: 0.72 AU - 0.86 AU

Year: 453 Days

Day: 13.7 Hours

Environment

Temp: -145 °C

Axial Tilt: 50 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 36,984,201 km

• M1: 154,235 km (0.068 R)
• M2: 623,225 km (0.103 R)
• M3: 1,100,292 km (0.095 R)
• M4: 1,488,200 km (0.093 R)
• M5: 2,108,133 km (0.053 R)
• M6: 2,895,467 km (0.095 R)
• M7: 3,519,290 km (0.098 R)
• M8: 4,218,510 km (0.095 R)
• M9: 4,629,007 km (0.118 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.02 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 642.9

Radius: 10.8

Gravity: 5.51 G

Time & Orbit

Eccentricity (e): 0.249

Orbit Range: 0.77 AU - 1.27 AU

Year: 665 Days

Day: 11.4 Hours

Environment

Temp: -153 °C

Axial Tilt: 35 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 36,984,201 km

• M1: 134,339 km (0.055 R)
• M2: 622,477 km (0.063 R)
• M3: 1,414,448 km (0.06 R)
• M4: 1,912,310 km (0.047 R)
• M5: 2,251,747 km (0.078 R)
• M6: 2,697,549 km (0.103 R)
• M7: 4,247,383 km (0.111 R)
• M8: 5,188,204 km (0.051 R)
• M9: 5,708,206 km (0.113 R)
• M10: 6,184,077 km (0.079 R)
• M11: 6,894,667 km (0.063 R)
• M12: 7,237,246 km (0.113 R)

Asteroid Belt

Center: 2.18 AU

Composition

Type: Outer System (Icy)

A dense region of planetesimals and debris.

Boundary

Planet 7 - Gas Giant

Semi-Major Axis: 3.33 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 246.5

Radius: 14.6

Gravity: 1.16 G

Time & Orbit

Eccentricity (e): 0.017

Orbit Range: 3.27 AU - 3.39 AU

Year: 3924 Days

Day: 10.3 Hours

Environment

Temp: -213 °C

Axial Tilt: 37.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 36,984,201 km

• M1: 182,360 km (0.068 R)
• M2: 684,859 km (0.115 R)
• M3: 1,313,469 km (0.12 R)
• M4: 1,896,901 km (0.111 R)
• M5: 2,784,465 km (0.11 R)
• M6: 3,274,249 km (0.1 R)
• M7: 3,859,326 km (0.051 R)
• M8: 5,265,247 km (0.118 R)
• M9: 6,934,011 km (0.108 R)
• M10: 7,813,646 km (0.113 R)
• M11: 8,280,841 km (0.089 R)
• M12: 8,832,857 km (0.055 R)
• M13: 10,451,057 km (0.034 R)
• M14: 11,890,188 km (0.079 R)
• M15: 12,763,840 km (0.093 R)
• M16: 16,590,703 km (0.096 R)

Planet 8 - Ice Giant

Semi-Major Axis: 6.97 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 222.9

Radius: 5.2

Gravity: 8.24 G

Time & Orbit

Eccentricity (e): 0.005

Orbit Range: 6.94 AU - 7 AU

Year: 11881 Days

Day: 23.4 Hours

Environment

Temp: -234 °C

Axial Tilt: 16.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (28)

Outer Limit: 36,984,201 km

• M1: 64,776 km (0.073 R)
• M2: 280,047 km (0.108 R)
• M3: 490,831 km (0.08 R)
• M4: 713,582 km (0.051 R)
• M5: 965,056 km (0.052 R)
• M6: 1,164,470 km (0.11 R)
• M7: 1,934,749 km (0.081 R)
• M8: 2,155,107 km (0.109 R)
• M9: 2,553,785 km (0.059 R)
• M10: 2,959,195 km (0.096 R)
• M11: 4,046,473 km (0.075 R)
• M12: 4,904,716 km (0.107 R)
• M13: 5,137,041 km (0.075 R)
• M14: 6,513,641 km (0.101 R)
• M15: 9,473,285 km (0.097 R)
• M16: 10,110,422 km (0.099 R)
• M17: 12,565,922 km (0.091 R)
• M18: 13,559,701 km (0.106 R)
• M19: 13,844,834 km (0.098 R)
• M20: 15,269,305 km (0.067 R)
• M21: 16,143,854 km (0.093 R)
• M22: 16,399,816 km (0.081 R)
• M23: 17,855,852 km (0.117 R)
• M24: 21,868,965 km (0.114 R)
• M25: 22,818,014 km (0.031 R)
• M26: 24,882,763 km (0.104 R)
• M27: 30,339,645 km (0.12 R)
• M28: 35,563,004 km (0.113 R)

Kuiper Belt

Range: 30 - 52 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 188 - 12,740 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit