🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.34 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.67 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.97

Radius: 0.99

Gravity: 0.99 G

Time & Orbit

Eccentricity (e): 0.099

Orbit Range: 0.6 AU - 0.74 AU

Year: 252 Days

Day: 47.9 Hours

Environment

Temp: -46 °C

Axial Tilt: 19 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.68 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.15

Radius: 1.36

Gravity: 1.16 G

Time & Orbit

Eccentricity (e): 0.088

Orbit Range: 0.62 AU - 0.74 AU

Year: 258 Days

Day: 42.9 Hours

Environment

Temp: -39 °C

Axial Tilt: 164.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Terrestrial

Semi-Major Axis: 0.78 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.53

Radius: 1.45

Gravity: 1.2 G

Time & Orbit

Eccentricity (e): 0.085

Orbit Range: 0.71 AU - 0.85 AU

Year: 317 Days

Day: 18.8 Hours

Environment

Temp: -61 °C

Axial Tilt: 4.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 74,647,148 km

• M1: 700,417 km (0.036 R)

Planet 4 - Terrestrial

Semi-Major Axis: 0.79 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.24

Radius: 1.38

Gravity: 1.18 G

Time & Orbit

Eccentricity (e): 0.122

Orbit Range: 0.69 AU - 0.89 AU

Year: 323 Days

Day: 24.5 Hours

Environment

Temp: -44 °C

Axial Tilt: 29.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Gas Giant

Semi-Major Axis: 2.61 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 575.7

Radius: 9.8

Gravity: 5.99 G

Time & Orbit

Eccentricity (e): 0.004

Orbit Range: 2.6 AU - 2.62 AU

Year: 1940 Days

Day: 8 Hours

Environment

Temp: -143 °C

Axial Tilt: 12.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 74,647,148 km

• M1: 121,922 km (0.099 R)
• M2: 431,291 km (0.097 R)
• M3: 750,233 km (0.084 R)
• M4: 1,120,937 km (0.054 R)
• M5: 1,447,060 km (0.077 R)
• M6: 1,785,002 km (0.119 R)
• M7: 2,093,473 km (0.06 R)
• M8: 2,516,386 km (0.105 R)
• M9: 2,966,077 km (0.101 R)
• M10: 3,501,937 km (0.083 R)
• M11: 4,138,625 km (0.077 R)
• M12: 4,504,691 km (0.098 R)
• M13: 5,346,777 km (0.046 R)
• M14: 5,829,231 km (0.114 R)
• M15: 6,568,543 km (0.113 R)
• M16: 7,536,591 km (0.081 R)
• M17: 8,114,189 km (0.083 R)
• M18: 9,003,697 km (0.096 R)
• M19: 11,012,348 km (0.111 R)
• M20: 13,678,332 km (0.077 R)
• M21: 14,581,903 km (0.114 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.96 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 190.7

Radius: 8.1

Gravity: 2.91 G

Time & Orbit

Eccentricity (e): 0.02

Orbit Range: 2.9 AU - 3.02 AU

Year: 2343 Days

Day: 7.8 Hours

Environment

Temp: -148 °C

Axial Tilt: 4.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 74,647,148 km

• M1: 100,679 km (0.062 R)
• M2: 371,003 km (0.047 R)
• M3: 1,349,074 km (0.082 R)
• M4: 1,749,846 km (0.081 R)
• M5: 2,498,883 km (0.118 R)
• M6: 3,178,506 km (0.073 R)
• M7: 3,553,997 km (0.11 R)
• M8: 3,908,843 km (0.062 R)
• M9: 4,304,828 km (0.11 R)
• M10: 5,894,455 km (0.086 R)
• M11: 8,194,223 km (0.116 R)
• M12: 9,527,739 km (0.099 R)
• M13: 10,087,085 km (0.06 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.49 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 429.9

Radius: 9.5

Gravity: 4.76 G

Time & Orbit

Eccentricity (e): 0.12

Orbit Range: 3.07 AU - 3.91 AU

Year: 3000 Days

Day: 5.2 Hours

Environment

Temp: -170 °C

Axial Tilt: 43.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 74,647,148 km

• M1: 118,182 km (0.112 R)
• M2: 515,065 km (0.065 R)
• M3: 836,402 km (0.034 R)
• M4: 1,287,738 km (0.099 R)
• M5: 1,706,912 km (0.102 R)
• M6: 2,241,874 km (0.057 R)
• M7: 2,702,486 km (0.1 R)
• M8: 4,144,759 km (0.119 R)
• M9: 4,515,612 km (0.051 R)
• M10: 5,136,592 km (0.074 R)
• M11: 5,467,952 km (0.102 R)
• M12: 6,305,849 km (0.083 R)
• M13: 7,493,208 km (0.09 R)
• M14: 8,203,498 km (0.086 R)
• M15: 8,756,711 km (0.029 R)
• M16: 9,230,937 km (0.097 R)
• M17: 12,571,307 km (0.088 R)
• M18: 13,087,719 km (0.056 R)
• M19: 14,864,344 km (0.08 R)
• M20: 15,785,717 km (0.043 R)
• M21: 16,796,251 km (0.117 R)

Planet 8 - Ice Giant

Semi-Major Axis: 11.73 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 757

Radius: 3.4

Gravity: 65.48 G

Time & Orbit

Eccentricity (e): 0.034

Orbit Range: 11.33 AU - 12.13 AU

Year: 18487 Days

Day: 20.3 Hours

Environment

Temp: -201 °C

Axial Tilt: 18.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (29)

Outer Limit: 74,647,148 km

• M1: 83,476 km (0.115 R)
• M2: 206,146 km (0.092 R)
• M3: 347,815 km (0.051 R)
• M4: 522,396 km (0.078 R)
• M5: 926,460 km (0.106 R)
• M6: 1,787,545 km (0.095 R)
• M7: 2,579,815 km (0.082 R)
• M8: 2,772,348 km (0.086 R)
• M9: 3,790,660 km (0.108 R)
• M10: 4,640,227 km (0.047 R)
• M11: 5,184,165 km (0.071 R)
• M12: 6,098,956 km (0.075 R)
• M13: 8,873,248 km (0.11 R)
• M14: 15,916,465 km (0.115 R)
• M15: 17,059,543 km (0.1 R)
• M16: 17,311,466 km (0.088 R)
• M17: 20,061,523 km (0.088 R)
• M18: 25,413,088 km (0.049 R)
• M19: 31,265,057 km (0.086 R)
• M20: 35,310,184 km (0.072 R)
• M21: 37,386,901 km (0.083 R)
• M22: 40,577,974 km (0.117 R)
• M23: 42,086,668 km (0.074 R)
• M24: 52,636,460 km (0.082 R)
• M25: 62,802,383 km (0.096 R)
• M26: 64,614,462 km (0.106 R)
• M27: 67,711,886 km (0.111 R)
• M28: 71,775,263 km (0.104 R)
• M29: 74,647,094 km (0.118 R)

Kuiper Belt

Range: 30 - 57 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 430 - 18,240 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit