🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.33 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.65 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.36

Radius: 1.62

Gravity: 1.28 G

Time & Orbit

Eccentricity (e): 0.136

Orbit Range: 0.56 AU - 0.74 AU

Year: 338 Days

Day: 14.9 Hours

Environment

Temp: -127 °C

Axial Tilt: 11.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.67 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.81

Radius: 1.27

Gravity: 1.12 G

Time & Orbit

Eccentricity (e): 0.117

Orbit Range: 0.59 AU - 0.75 AU

Year: 354 Days

Day: 28.6 Hours

Environment

Temp: -137 °C

Axial Tilt: 36.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 56,812,179 km

• M1: 42,336 km (0.079 R)
• M2: 184,305 km (0.074 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.75 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 808.7

Radius: 8.4

Gravity: 11.46 G

Time & Orbit

Eccentricity (e): 0.169

Orbit Range: 0.62 AU - 0.88 AU

Year: 419 Days

Day: 9.7 Hours

Environment

Temp: -148 °C

Axial Tilt: 16.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 56,812,179 km

• M1: 104,419 km (0.061 R)
• M2: 506,688 km (0.107 R)
• M3: 930,200 km (0.096 R)
• M4: 1,680,134 km (0.114 R)
• M5: 2,053,380 km (0.1 R)
• M6: 2,423,486 km (0.083 R)
• M7: 2,934,961 km (0.105 R)
• M8: 3,591,246 km (0.12 R)
• M9: 4,256,658 km (0.09 R)
• M10: 4,530,123 km (0.1 R)
• M11: 5,405,719 km (0.105 R)
• M12: 5,813,672 km (0.114 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.42 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 905.1

Radius: 11.2

Gravity: 7.22 G

Time & Orbit

Eccentricity (e): 0.093

Orbit Range: 1.29 AU - 1.55 AU

Year: 1093 Days

Day: 7.3 Hours

Environment

Temp: -176 °C

Axial Tilt: 1.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 56,812,179 km

• M1: 139,276 km (0.103 R)
• M2: 493,224 km (0.099 R)
• M3: 854,952 km (0.079 R)
• M4: 1,280,707 km (0.08 R)
• M5: 2,282,265 km (0.119 R)
• M6: 2,770,403 km (0.104 R)
• M7: 3,524,227 km (0.048 R)
• M8: 4,214,621 km (0.107 R)
• M9: 4,704,703 km (0.081 R)
• M10: 5,252,680 km (0.11 R)
• M11: 5,627,274 km (0.11 R)
• M12: 6,268,300 km (0.073 R)
• M13: 7,156,463 km (0.106 R)
• M14: 7,513,553 km (0.091 R)
• M15: 9,181,719 km (0.105 R)
• M16: 9,665,518 km (0.116 R)
• M17: 10,039,364 km (0.043 R)
• M18: 10,520,470 km (0.111 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.48 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 288.4

Radius: 13.5

Gravity: 1.58 G

Time & Orbit

Eccentricity (e): 0.153

Orbit Range: 1.25 AU - 1.71 AU

Year: 1163 Days

Day: 8.9 Hours

Environment

Temp: -185 °C

Axial Tilt: 46.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 56,812,179 km

• M1: 169,195 km (0.095 R)
• M2: 763,248 km (0.036 R)
• M3: 1,563,747 km (0.111 R)
• M4: 2,128,927 km (0.099 R)
• M5: 2,568,895 km (0.052 R)
• M6: 3,636,874 km (0.114 R)
• M7: 4,257,256 km (0.117 R)
• M8: 4,759,755 km (0.091 R)
• M9: 5,374,752 km (0.118 R)
• M10: 6,872,526 km (0.036 R)
• M11: 7,660,159 km (0.1 R)
• M12: 8,482,050 km (0.107 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.25 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 481.4

Radius: 13.3

Gravity: 2.72 G

Time & Orbit

Eccentricity (e): 0.233

Orbit Range: 3.26 AU - 5.24 AU

Year: 5657 Days

Day: 10 Hours

Environment

Temp: -205 °C

Axial Tilt: 17.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 56,812,179 km

• M1: 165,904 km (0.081 R)
• M2: 669,002 km (0.086 R)
• M3: 1,151,156 km (0.075 R)
• M4: 1,730,847 km (0.107 R)
• M5: 2,824,258 km (0.119 R)
• M6: 3,575,389 km (0.083 R)
• M7: 5,120,436 km (0.065 R)
• M8: 6,874,621 km (0.075 R)
• M9: 9,440,822 km (0.111 R)
• M10: 10,364,888 km (0.104 R)
• M11: 11,302,418 km (0.108 R)
• M12: 12,102,169 km (0.057 R)
• M13: 14,132,810 km (0.08 R)
• M14: 14,784,010 km (0.096 R)
• M15: 15,568,950 km (0.104 R)
• M16: 16,029,861 km (0.092 R)
• M17: 17,222,305 km (0.098 R)
• M18: 18,859,654 km (0.03 R)
• M19: 21,295,107 km (0.11 R)
• M20: 23,630,031 km (0.104 R)
• M21: 24,548,113 km (0.063 R)
• M22: 25,016,055 km (0.072 R)
• M23: 26,131,008 km (0.076 R)

Planet 7 - Ice Giant

Semi-Major Axis: 8.04 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 526.4

Radius: 6.2

Gravity: 13.69 G

Time & Orbit

Eccentricity (e): 0.035

Orbit Range: 7.76 AU - 8.32 AU

Year: 14720 Days

Day: 24.5 Hours

Environment

Temp: -235 °C

Axial Tilt: 28.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 56,812,179 km

• M1: 77,043 km (0.041 R)
• M2: 656,884 km (0.074 R)
• M3: 1,006,794 km (0.113 R)
• M4: 1,349,373 km (0.066 R)
• M5: 1,593,666 km (0.094 R)
• M6: 3,165,790 km (0.058 R)
• M7: 3,520,786 km (0.095 R)
• M8: 4,844,428 km (0.101 R)
• M9: 5,967,459 km (0.084 R)
• M10: 10,255,682 km (0.075 R)
• M11: 11,788,611 km (0.103 R)
• M12: 12,828,616 km (0.054 R)
• M13: 17,525,839 km (0.072 R)
• M14: 21,430,344 km (0.065 R)
• M15: 30,116,894 km (0.119 R)
• M16: 30,452,292 km (0.071 R)
• M17: 36,669,729 km (0.091 R)
• M18: 37,308,662 km (0.067 R)
• M19: 43,113,508 km (0.09 R)
• M20: 51,378,790 km (0.05 R)

Kuiper Belt

Range: 30 - 46 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 274 - 19,841 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit