🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.27 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.53 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.74

Radius: 1.5

Gravity: 1.22 G

Time & Orbit

Eccentricity (e): 0.14

Orbit Range: 0.46 AU - 0.6 AU

Year: 245 Days

Day: 15.3 Hours

Environment

Temp: -124 °C

Axial Tilt: 27.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.53 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.56

Radius: 0.79

Gravity: 0.9 G

Time & Orbit

Eccentricity (e): 0.068

Orbit Range: 0.49 AU - 0.57 AU

Year: 245 Days

Day: 21 Hours

Environment

Temp: -126 °C

Axial Tilt: 39.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Terrestrial

Semi-Major Axis: 0.65 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.95

Radius: 1.73

Gravity: 1.32 G

Time & Orbit

Eccentricity (e): 0.072

Orbit Range: 0.6 AU - 0.7 AU

Year: 333 Days

Day: 35.5 Hours

Environment

Temp: -130 °C

Axial Tilt: 36.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 43,607,241 km

• M1: 64,028 km (0.086 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.78 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 287.6

Radius: 9.7

Gravity: 3.06 G

Time & Orbit

Eccentricity (e): 0.161

Orbit Range: 0.65 AU - 0.91 AU

Year: 438 Days

Day: 7.9 Hours

Environment

Temp: -140 °C

Axial Tilt: 14.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 43,607,241 km

• M1: 121,324 km (0.117 R)
• M2: 444,455 km (0.074 R)
• M3: 984,952 km (0.105 R)
• M4: 1,290,431 km (0.099 R)
• M5: 1,693,448 km (0.091 R)
• M6: 2,334,026 km (0.073 R)
• M7: 2,804,212 km (0.078 R)
• M8: 3,231,464 km (0.077 R)
• M9: 3,770,914 km (0.05 R)
• M10: 4,420,916 km (0.093 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.26 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 300.5

Radius: 13.8

Gravity: 1.58 G

Time & Orbit

Eccentricity (e): 0.157

Orbit Range: 1.06 AU - 1.46 AU

Year: 899 Days

Day: 8.2 Hours

Environment

Temp: -177 °C

Axial Tilt: 47.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 43,607,241 km

• M1: 171,589 km (0.069 R)
• M2: 1,042,697 km (0.098 R)
• M3: 1,872,965 km (0.118 R)
• M4: 2,436,201 km (0.103 R)
• M5: 3,559,382 km (0.118 R)
• M6: 4,540,295 km (0.113 R)
• M7: 5,119,987 km (0.11 R)
• M8: 6,006,953 km (0.089 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.26 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 814.3

Radius: 13.3

Gravity: 4.6 G

Time & Orbit

Eccentricity (e): 0.206

Orbit Range: 1.79 AU - 2.73 AU

Year: 2160 Days

Day: 10.5 Hours

Environment

Temp: -200 °C

Axial Tilt: 45.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 43,607,241 km

• M1: 166,203 km (0.101 R)
• M2: 644,767 km (0.09 R)
• M3: 1,136,046 km (0.096 R)
• M4: 1,595,611 km (0.053 R)
• M5: 2,862,406 km (0.114 R)
• M6: 3,295,940 km (0.071 R)
• M7: 4,760,055 km (0.095 R)
• M8: 5,861,394 km (0.043 R)
• M9: 7,716,557 km (0.093 R)
• M10: 8,762,097 km (0.088 R)
• M11: 9,301,996 km (0.114 R)
• M12: 10,448,813 km (0.109 R)
• M13: 10,902,543 km (0.106 R)
• M14: 11,849,348 km (0.104 R)
• M15: 13,459,769 km (0.091 R)
• M16: 14,042,902 km (0.1 R)
• M17: 14,502,915 km (0.092 R)
• M18: 16,852,649 km (0.109 R)
• M19: 17,902,976 km (0.065 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.85 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 998.1

Radius: 9.9

Gravity: 10.18 G

Time & Orbit

Eccentricity (e): 0.149

Orbit Range: 2.43 AU - 3.27 AU

Year: 3059 Days

Day: 11 Hours

Environment

Temp: -201 °C

Axial Tilt: 0.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 43,607,241 km

• M1: 123,119 km (0.072 R)
• M2: 458,218 km (0.115 R)
• M3: 1,717,832 km (0.082 R)
• M4: 2,286,304 km (0.063 R)
• M5: 2,639,355 km (0.082 R)
• M6: 2,975,950 km (0.091 R)
• M7: 4,297,049 km (0.117 R)
• M8: 5,164,866 km (0.056 R)
• M9: 6,927,129 km (0.079 R)
• M10: 8,082,773 km (0.109 R)
• M11: 8,471,279 km (0.025 R)
• M12: 10,941,887 km (0.117 R)
• M13: 11,417,758 km (0.04 R)
• M14: 12,550,962 km (0.073 R)
• M15: 13,412,197 km (0.095 R)
• M16: 14,414,802 km (0.075 R)
• M17: 14,725,068 km (0.059 R)
• M18: 15,956,109 km (0.078 R)
• M19: 19,238,585 km (0.103 R)
• M20: 19,551,993 km (0.114 R)
• M21: 24,087,052 km (0.104 R)
• M22: 24,524,477 km (0.112 R)

Planet 8 - Ice Giant

Semi-Major Axis: 6.88 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 842.9

Radius: 5.3

Gravity: 30.01 G

Time & Orbit

Eccentricity (e): 0.242

Orbit Range: 5.22 AU - 8.54 AU

Year: 11474 Days

Day: 19 Hours

Environment

Temp: -214 °C

Axial Tilt: 21.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (30)

Outer Limit: 43,607,241 km

• M1: 76,295 km (0.11 R)
• M2: 296,204 km (0.106 R)
• M3: 1,260,960 km (0.058 R)
• M4: 1,645,577 km (0.03 R)
• M5: 2,160,941 km (0.061 R)
• M6: 2,914,167 km (0.028 R)
• M7: 3,375,826 km (0.105 R)
• M8: 4,084,770 km (0.112 R)
• M9: 4,888,559 km (0.064 R)
• M10: 5,189,849 km (0.114 R)
• M11: 5,719,426 km (0.102 R)
• M12: 6,245,711 km (0.1 R)
• M13: 8,295,800 km (0.068 R)
• M14: 10,315,671 km (0.098 R)
• M15: 12,272,261 km (0.065 R)
• M16: 15,579,272 km (0.075 R)
• M17: 16,601,773 km (0.099 R)
• M18: 16,902,016 km (0.093 R)
• M19: 19,852,834 km (0.094 R)
• M20: 21,582,485 km (0.107 R)
• M21: 27,789,151 km (0.084 R)
• M22: 29,617,686 km (0.08 R)
• M23: 29,948,596 km (0.091 R)
• M24: 31,410,616 km (0.076 R)
• M25: 32,919,460 km (0.105 R)
• M26: 33,631,995 km (0.105 R)
• M27: 36,965,634 km (0.081 R)
• M28: 46,471,681 km (0.066 R)
• M29: 47,820,306 km (0.108 R)
• M30: 48,275,682 km (0.063 R)

Planet 9 - Ice Giant

Semi-Major Axis: 7.25 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 334.8

Radius: 5.7

Gravity: 10.3 G

Time & Orbit

Eccentricity (e): 0.18

Orbit Range: 5.95 AU - 8.56 AU

Year: 12412 Days

Day: 16.9 Hours

Environment

Temp: -230 °C

Axial Tilt: 4.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 43,607,241 km

• M1: 73,303 km (0.066 R)
• M2: 252,521 km (0.114 R)
• M3: 479,910 km (0.088 R)
• M4: 881,131 km (0.036 R)
• M5: 1,418,786 km (0.026 R)
• M6: 2,878,113 km (0.108 R)
• M7: 3,605,309 km (0.108 R)
• M8: 5,319,401 km (0.071 R)
• M9: 5,778,367 km (0.076 R)
• M10: 8,434,178 km (0.094 R)
• M11: 9,241,558 km (0.064 R)
• M12: 10,802,313 km (0.087 R)
• M13: 12,082,272 km (0.094 R)
• M14: 12,816,349 km (0.075 R)
• M15: 16,388,596 km (0.117 R)
• M16: 17,216,920 km (0.116 R)
• M17: 18,882,094 km (0.091 R)
• M18: 20,336,335 km (0.053 R)
• M19: 21,211,632 km (0.087 R)
• M20: 22,361,441 km (0.049 R)
• M21: 22,613,214 km (0.05 R)
• M22: 26,713,393 km (0.1 R)
• M23: 28,248,267 km (0.049 R)
• M24: 38,951,246 km (0.092 R)

Kuiper Belt

Range: 30 - 58 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 167 - 13,484 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit