🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.32 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.64 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.28

Radius: 1.61

Gravity: 1.27 G

Time & Orbit

Eccentricity (e): 0.136

Orbit Range: 0.55 AU - 0.73 AU

Year: 195 Days

Day: 15.9 Hours

Environment

Temp: 125 °C

Axial Tilt: 11.9 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 1.1 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.26

Radius: 1.1

Gravity: 1.04 G

Time & Orbit

Eccentricity (e): 0.191

Orbit Range: 0.89 AU - 1.31 AU

Year: 439 Days

Day: 47 Hours

Environment

Temp: 1 °C

Axial Tilt: 4.1 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Satellites (1)

Outer Limit: 64,874,207 km

• M1: 108,159 km (0.045 R)

Planet 3 - Terrestrial

Semi-Major Axis: 1.51 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.46

Radius: 1.16

Gravity: 1.09 G

Time & Orbit

Eccentricity (e): 0.179

Orbit Range: 1.24 AU - 1.78 AU

Year: 707 Days

Day: 21.1 Hours

Environment

Temp: -44 °C

Axial Tilt: 9.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Terrestrial

Semi-Major Axis: 2.94 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.47

Radius: 0.74

Gravity: 0.86 G

Time & Orbit

Eccentricity (e): 0.162

Orbit Range: 2.46 AU - 3.42 AU

Year: 1920 Days

Day: 23.5 Hours

Environment

Temp: -110 °C

Axial Tilt: 111.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Asteroid Belt

Center: 4.06 AU

Composition

Type: Main (Rocky/Icy Mix)

A dense region of planetesimals and debris.

Boundary

Planet 5 - Gas Giant

Semi-Major Axis: 5.18 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 480.5

Radius: 8

Gravity: 7.51 G

Time & Orbit

Eccentricity (e): 0.196

Orbit Range: 4.16 AU - 6.2 AU

Year: 4489 Days

Day: 7.4 Hours

Environment

Temp: -152 °C

Axial Tilt: 9.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 64,874,207 km

• M1: 101,128 km (0.107 R)
• M2: 402,119 km (0.053 R)
• M3: 1,212,192 km (0.108 R)
• M4: 1,620,743 km (0.116 R)
• M5: 2,247,110 km (0.077 R)
• M6: 4,852,357 km (0.032 R)
• M7: 5,856,607 km (0.076 R)
• M8: 6,142,489 km (0.098 R)
• M9: 6,711,409 km (0.094 R)
• M10: 12,455,220 km (0.115 R)
• M11: 13,268,134 km (0.1 R)
• M12: 14,631,121 km (0.108 R)
• M13: 18,351,620 km (0.068 R)
• M14: 22,449,404 km (0.1 R)

Planet 6 - Gas Giant

Semi-Major Axis: 6.11 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 480.5

Radius: 8.6

Gravity: 6.5 G

Time & Orbit

Eccentricity (e): 0.175

Orbit Range: 5.04 AU - 7.18 AU

Year: 5751 Days

Day: 5.7 Hours

Environment

Temp: -154 °C

Axial Tilt: 26.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 64,874,207 km

• M1: 106,962 km (0.088 R)
• M2: 398,678 km (0.057 R)
• M3: 765,044 km (0.054 R)
• M4: 1,105,079 km (0.087 R)
• M5: 1,654,552 km (0.107 R)
• M6: 3,312,097 km (0.102 R)
• M7: 3,580,775 km (0.108 R)
• M8: 3,908,992 km (0.11 R)
• M9: 4,626,015 km (0.12 R)
• M10: 5,428,159 km (0.062 R)
• M11: 5,744,409 km (0.036 R)
• M12: 6,042,707 km (0.064 R)
• M13: 7,692,323 km (0.099 R)
• M14: 10,044,001 km (0.078 R)
• M15: 11,807,162 km (0.097 R)
• M16: 12,837,442 km (0.093 R)
• M17: 13,142,622 km (0.088 R)
• M18: 14,521,166 km (0.111 R)
• M19: 16,766,032 km (0.029 R)

Planet 7 - Ice Giant

Semi-Major Axis: 17.27 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 499.3

Radius: 3.2

Gravity: 48.76 G

Time & Orbit

Eccentricity (e): 0.129

Orbit Range: 15.04 AU - 19.5 AU

Year: 27330 Days

Day: 18.3 Hours

Environment

Temp: -208 °C

Axial Tilt: 4.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 64,874,207 km

• M1: 39,793 km (0.085 R)
• M2: 247,136 km (0.112 R)
• M3: 507,137 km (0.085 R)
• M4: 684,111 km (0.114 R)
• M5: 1,608,327 km (0.031 R)
• M6: 3,236,849 km (0.032 R)
• M7: 9,187,254 km (0.047 R)
• M8: 10,449,262 km (0.087 R)
• M9: 22,867,082 km (0.046 R)
• M10: 29,825,028 km (0.085 R)
• M11: 31,498,430 km (0.116 R)
• M12: 32,025,613 km (0.115 R)
• M13: 32,291,448 km (0.114 R)
• M14: 41,437,264 km (0.087 R)
• M15: 42,388,856 km (0.04 R)
• M16: 43,680,185 km (0.064 R)
• M17: 49,994,860 km (0.067 R)
• M18: 64,817,915 km (0.104 R)
• M19: 77,439,787 km (0.097 R)
• M20: 79,124,109 km (0.079 R)

Planet 8 - Ice Giant

Semi-Major Axis: 17.65 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 213

Radius: 7.5

Gravity: 3.79 G

Time & Orbit

Eccentricity (e): 0.062

Orbit Range: 16.56 AU - 18.74 AU

Year: 28237 Days

Day: 24.5 Hours

Environment

Temp: -199 °C

Axial Tilt: 34.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 64,874,207 km

• M1: 93,199 km (0.077 R)
• M2: 353,649 km (0.096 R)
• M3: 988,842 km (0.069 R)
• M4: 1,986,061 km (0.081 R)
• M5: 2,485,419 km (0.083 R)
• M6: 4,961,713 km (0.075 R)
• M7: 7,855,534 km (0.119 R)
• M8: 8,839,140 km (0.111 R)
• M9: 9,683,171 km (0.098 R)
• M10: 10,237,431 km (0.112 R)
• M11: 18,887,330 km (0.102 R)
• M12: 19,402,993 km (0.095 R)
• M13: 24,373,532 km (0.085 R)
• M14: 29,209,433 km (0.108 R)
• M15: 33,635,585 km (0.112 R)
• M16: 35,420,737 km (0.12 R)
• M17: 36,867,049 km (0.063 R)
• M18: 44,390,326 km (0.117 R)
• M19: 63,523,295 km (0.115 R)
• M20: 63,907,313 km (0.071 R)

Kuiper Belt

Range: 30 - 55 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 293 - 14,747 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit