🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.31 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.62 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.23

Radius: 1.38

Gravity: 1.17 G

Time & Orbit

Eccentricity (e): 0.191

Orbit Range: 0.5 AU - 0.74 AU

Year: 320 Days

Day: 24.5 Hours

Environment

Temp: -138 °C

Axial Tilt: 9.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 53,375,388 km

• M1: 383,868 km (0.075 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.65 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.05

Radius: 1.02

Gravity: 1.01 G

Time & Orbit

Eccentricity (e): 0.182

Orbit Range: 0.53 AU - 0.77 AU

Year: 344 Days

Day: 12.6 Hours

Environment

Temp: -126 °C

Axial Tilt: 8.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 53,375,388 km

• M1: 121,623 km (0.077 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.94 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 131.8

Radius: 11.6

Gravity: 0.98 G

Time & Orbit

Eccentricity (e): 0.137

Orbit Range: 0.81 AU - 1.07 AU

Year: 598 Days

Day: 5.1 Hours

Environment

Temp: -159 °C

Axial Tilt: 12.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 53,375,388 km

• M1: 144,212 km (0.077 R)
• M2: 593,455 km (0.1 R)
• M3: 1,044,792 km (0.071 R)
• M4: 1,498,522 km (0.095 R)
• M5: 2,182,184 km (0.077 R)
• M6: 2,618,711 km (0.077 R)
• M7: 3,538,588 km (0.094 R)
• M8: 4,182,158 km (0.116 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.02 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 377.3

Radius: 10.8

Gravity: 3.23 G

Time & Orbit

Eccentricity (e): 0.149

Orbit Range: 0.87 AU - 1.17 AU

Year: 676 Days

Day: 13.5 Hours

Environment

Temp: -160 °C

Axial Tilt: 13.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 53,375,388 km

• M1: 135,386 km (0.113 R)
• M2: 490,232 km (0.074 R)
• M3: 840,441 km (0.061 R)
• M4: 1,316,611 km (0.049 R)
• M5: 1,776,774 km (0.103 R)
• M6: 2,132,966 km (0.077 R)
• M7: 2,700,541 km (0.07 R)
• M8: 3,246,423 km (0.115 R)
• M9: 3,758,647 km (0.037 R)
• M10: 4,167,049 km (0.116 R)
• M11: 4,559,743 km (0.096 R)
• M12: 5,677,688 km (0.087 R)
• M13: 6,106,735 km (0.068 R)
• M14: 6,499,728 km (0.109 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.8 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 715.8

Radius: 9.1

Gravity: 8.64 G

Time & Orbit

Eccentricity (e): 0.044

Orbit Range: 1.72 AU - 1.88 AU

Year: 1584 Days

Day: 10.3 Hours

Environment

Temp: -186 °C

Axial Tilt: 42.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 53,375,388 km

• M1: 113,096 km (0.111 R)
• M2: 468,541 km (0.108 R)
• M3: 1,182,422 km (0.073 R)
• M4: 1,524,552 km (0.097 R)
• M5: 2,412,864 km (0.101 R)
• M6: 3,367,448 km (0.086 R)
• M7: 3,869,050 km (0.116 R)
• M8: 4,516,360 km (0.092 R)
• M9: 5,021,701 km (0.077 R)
• M10: 5,699,978 km (0.059 R)
• M11: 7,510,711 km (0.06 R)
• M12: 7,846,109 km (0.116 R)
• M13: 8,220,553 km (0.097 R)
• M14: 8,607,113 km (0.088 R)
• M15: 8,974,526 km (0.115 R)
• M16: 9,972,643 km (0.114 R)
• M17: 11,078,620 km (0.048 R)
• M18: 11,810,303 km (0.1 R)
• M19: 12,302,779 km (0.115 R)
• M20: 13,573,763 km (0.037 R)
• M21: 13,904,823 km (0.109 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.83 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 142.4

Radius: 8.8

Gravity: 1.84 G

Time & Orbit

Eccentricity (e): 0.126

Orbit Range: 3.35 AU - 4.31 AU

Year: 4917 Days

Day: 6.6 Hours

Environment

Temp: -212 °C

Axial Tilt: 11.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 53,375,388 km

• M1: 109,506 km (0.12 R)
• M2: 512,074 km (0.115 R)
• M3: 2,320,113 km (0.112 R)
• M4: 2,877,665 km (0.108 R)
• M5: 3,738,301 km (0.059 R)
• M6: 5,516,122 km (0.102 R)
• M7: 6,322,006 km (0.055 R)
• M8: 8,324,374 km (0.084 R)
• M9: 8,711,383 km (0.119 R)
• M10: 9,348,670 km (0.081 R)
• M11: 10,270,791 km (0.109 R)
• M12: 11,566,459 km (0.033 R)
• M13: 13,665,167 km (0.112 R)
• M14: 16,303,475 km (0.068 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.09 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 290.4

Radius: 14.6

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.13

Orbit Range: 3.56 AU - 4.62 AU

Year: 5426 Days

Day: 13.7 Hours

Environment

Temp: -202 °C

Axial Tilt: 43.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 53,375,388 km

• M1: 181,612 km (0.112 R)
• M2: 644,318 km (0.117 R)
• M3: 1,737,579 km (0.053 R)
• M4: 3,391,085 km (0.099 R)
• M5: 4,989,987 km (0.086 R)
• M6: 8,162,359 km (0.072 R)
• M7: 9,815,116 km (0.082 R)
• M8: 11,333,684 km (0.049 R)
• M9: 12,909,698 km (0.1 R)
• M10: 16,828,414 km (0.113 R)
• M11: 20,053,744 km (0.061 R)
• M12: 22,625,631 km (0.098 R)

Planet 8 - Ice Giant

Semi-Major Axis: 7.19 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 591.3

Radius: 6.6

Gravity: 13.57 G

Time & Orbit

Eccentricity (e): 0.184

Orbit Range: 5.87 AU - 8.51 AU

Year: 12647 Days

Day: 21.1 Hours

Environment

Temp: -215 °C

Axial Tilt: 15.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 53,375,388 km

• M1: 84,523 km (0.073 R)
• M2: 534,513 km (0.034 R)
• M3: 764,894 km (0.118 R)
• M4: 1,478,326 km (0.097 R)
• M5: 1,700,629 km (0.093 R)
• M6: 2,673,613 km (0.088 R)
• M7: 4,173,182 km (0.085 R)
• M8: 4,590,859 km (0.052 R)
• M9: 5,102,185 km (0.1 R)
• M10: 5,902,534 km (0.091 R)
• M11: 11,308,103 km (0.043 R)
• M12: 12,119,223 km (0.099 R)
• M13: 17,136,586 km (0.113 R)
• M14: 17,437,577 km (0.089 R)
• M15: 25,081,878 km (0.098 R)
• M16: 30,334,708 km (0.091 R)
• M17: 34,814,117 km (0.1 R)
• M18: 37,906,006 km (0.079 R)
• M19: 42,398,131 km (0.092 R)

Kuiper Belt

Range: 30 - 53 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 464 - 13,231 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit