🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.52 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 1.04 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.87

Radius: 1.72

Gravity: 1.31 G

Time & Orbit

Eccentricity (e): 0.21

Orbit Range: 0.82 AU - 1.26 AU

Year: 450 Days

Day: 31.5 Hours

Environment

Temp: -58 °C

Axial Tilt: 1.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 64,288,767 km

• M1: 40,391 km (0.117 R)
• M2: 766,240 km (0.115 R)

Planet 2 - Terrestrial

Semi-Major Axis: 1.18 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.51

Radius: 1.65

Gravity: 1.29 G

Time & Orbit

Eccentricity (e): 0.051

Orbit Range: 1.12 AU - 1.24 AU

Year: 544 Days

Day: 21.5 Hours

Environment

Temp: -63 °C

Axial Tilt: 16.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Terrestrial

Semi-Major Axis: 1.33 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.54

Radius: 0.78

Gravity: 0.89 G

Time & Orbit

Eccentricity (e): 0.002

Orbit Range: 1.33 AU - 1.33 AU

Year: 651 Days

Day: 47.1 Hours

Environment

Temp: -84 °C

Axial Tilt: 25.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Terrestrial

Semi-Major Axis: 1.78 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.17

Radius: 1.06

Gravity: 1.04 G

Time & Orbit

Eccentricity (e): 0.197

Orbit Range: 1.43 AU - 2.13 AU

Year: 1008 Days

Day: 13.3 Hours

Environment

Temp: -96 °C

Axial Tilt: 25.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Terrestrial

Semi-Major Axis: 2.05 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.27

Radius: 1.61

Gravity: 1.26 G

Time & Orbit

Eccentricity (e): 0.046

Orbit Range: 1.96 AU - 2.14 AU

Year: 1246 Days

Day: 13.4 Hours

Environment

Temp: -107 °C

Axial Tilt: 14.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Asteroid Belt

Center: 2.89 AU

Composition

Type: Main (Rocky/Icy Mix)

A dense region of planetesimals and debris.

Boundary

Planet 6 - Gas Giant

Semi-Major Axis: 3.73 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 863.6

Radius: 13.7

Gravity: 4.6 G

Time & Orbit

Eccentricity (e): 0.215

Orbit Range: 2.93 AU - 4.53 AU

Year: 3059 Days

Day: 10.3 Hours

Environment

Temp: -149 °C

Axial Tilt: 8.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 64,288,767 km

• M1: 170,841 km (0.025 R)
• M2: 655,687 km (0.11 R)
• M3: 1,095,655 km (0.119 R)
• M4: 1,652,757 km (0.066 R)
• M5: 2,282,864 km (0.116 R)
• M6: 2,983,730 km (0.033 R)
• M7: 3,764,032 km (0.076 R)
• M8: 4,842,483 km (0.06 R)
• M9: 5,545,892 km (0.085 R)
• M10: 6,374,365 km (0.092 R)
• M11: 9,026,736 km (0.112 R)
• M12: 10,015,577 km (0.098 R)
• M13: 10,455,096 km (0.103 R)
• M14: 11,545,664 km (0.055 R)
• M15: 12,118,774 km (0.103 R)
• M16: 14,002,211 km (0.083 R)
• M17: 15,431,918 km (0.106 R)
• M18: 17,872,458 km (0.103 R)
• M19: 18,640,343 km (0.109 R)
• M20: 21,667,456 km (0.066 R)

Planet 7 - Gas Giant

Semi-Major Axis: 6.48 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 296.1

Radius: 14.6

Gravity: 1.39 G

Time & Orbit

Eccentricity (e): 0.082

Orbit Range: 5.95 AU - 7.01 AU

Year: 7004 Days

Day: 7.4 Hours

Environment

Temp: -170 °C

Axial Tilt: 16 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 64,288,767 km

• M1: 181,612 km (0.086 R)
• M2: 1,011,431 km (0.057 R)
• M3: 2,439,642 km (0.079 R)
• M4: 3,774,504 km (0.083 R)
• M5: 5,984,962 km (0.091 R)
• M6: 6,820,317 km (0.034 R)
• M7: 9,633,953 km (0.104 R)
• M8: 11,925,344 km (0.061 R)
• M9: 13,047,029 km (0.049 R)
• M10: 17,256,862 km (0.102 R)
• M11: 18,884,038 km (0.114 R)
• M12: 22,952,801 km (0.074 R)

Planet 8 - Ice Giant

Semi-Major Axis: 10.78 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 470.5

Radius: 7.7

Gravity: 7.94 G

Time & Orbit

Eccentricity (e): 0.04

Orbit Range: 10.35 AU - 11.21 AU

Year: 15028 Days

Day: 15.6 Hours

Environment

Temp: -197 °C

Axial Tilt: 43.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 64,288,767 km

• M1: 96,491 km (0.102 R)
• M2: 344,524 km (0.083 R)
• M3: 677,529 km (0.038 R)
• M4: 1,003,503 km (0.085 R)
• M5: 2,050,388 km (0.044 R)
• M6: 2,701,738 km (0.103 R)
• M7: 3,135,123 km (0.079 R)
• M8: 4,561,538 km (0.118 R)
• M9: 7,187,131 km (0.082 R)
• M10: 7,705,786 km (0.08 R)
• M11: 8,111,047 km (0.093 R)
• M12: 9,771,284 km (0.046 R)
• M13: 10,736,490 km (0.103 R)
• M14: 12,730,480 km (0.108 R)
• M15: 13,106,269 km (0.115 R)
• M16: 13,361,035 km (0.114 R)
• M17: 15,448,374 km (0.094 R)
• M18: 19,422,591 km (0.119 R)
• M19: 20,513,010 km (0.102 R)
• M20: 26,788,341 km (0.116 R)
• M21: 29,099,030 km (0.06 R)
• M22: 32,459,596 km (0.118 R)
• M23: 37,843,325 km (0.083 R)
• M24: 46,840,888 km (0.078 R)

Planet 9 - Ice Giant

Semi-Major Axis: 12.42 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 478.5

Radius: 5.4

Gravity: 16.41 G

Time & Orbit

Eccentricity (e): 0.04

Orbit Range: 11.92 AU - 12.92 AU

Year: 18585 Days

Day: 17 Hours

Environment

Temp: -209 °C

Axial Tilt: 22.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 64,288,767 km

• M1: 67,469 km (0.095 R)
• M2: 325,375 km (0.115 R)
• M3: 558,150 km (0.088 R)
• M4: 1,345,334 km (0.118 R)
• M5: 2,055,475 km (0.068 R)
• M6: 2,613,624 km (0.071 R)
• M7: 3,732,018 km (0.054 R)
• M8: 8,839,289 km (0.118 R)
• M9: 9,413,446 km (0.092 R)
• M10: 10,123,737 km (0.081 R)
• M11: 12,793,012 km (0.042 R)
• M12: 15,225,323 km (0.071 R)
• M13: 15,821,620 km (0.112 R)
• M14: 18,953,452 km (0.058 R)
• M15: 19,382,648 km (0.057 R)
• M16: 20,260,488 km (0.081 R)
• M17: 21,813,165 km (0.071 R)
• M18: 30,193,338 km (0.083 R)
• M19: 33,444,250 km (0.063 R)
• M20: 40,348,341 km (0.073 R)
• M21: 42,943,266 km (0.045 R)
• M22: 45,954,521 km (0.116 R)
• M23: 48,782,519 km (0.083 R)

Kuiper Belt

Range: 30 - 50 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 421 - 12,063 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit