🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.3 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.6 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.98

Radius: 1.74

Gravity: 1.31 G

Time & Orbit

Eccentricity (e): 0.242

Orbit Range: 0.45 AU - 0.75 AU

Year: 296 Days

Day: 34 Hours

Environment

Temp: -125 °C

Axial Tilt: 36.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.8 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 369.3

Radius: 12.1

Gravity: 2.52 G

Time & Orbit

Eccentricity (e): 0.003

Orbit Range: 0.8 AU - 0.8 AU

Year: 455 Days

Day: 10.7 Hours

Environment

Temp: -156 °C

Axial Tilt: 45.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 73,622,905 km

• M1: 153,787 km (0.104 R)
• M2: 581,038 km (0.081 R)
• M3: 1,034,020 km (0.103 R)
• M4: 1,511,537 km (0.088 R)
• M5: 2,049,192 km (0.064 R)
• M6: 2,482,726 km (0.078 R)
• M7: 2,987,769 km (0.083 R)
• M8: 3,380,313 km (0.099 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.01 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 274.6

Radius: 10.9

Gravity: 2.31 G

Time & Orbit

Eccentricity (e): 0.22

Orbit Range: 0.79 AU - 1.23 AU

Year: 645 Days

Day: 7.1 Hours

Environment

Temp: -163 °C

Axial Tilt: 16.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 73,622,905 km

• M1: 135,536 km (0.067 R)
• M2: 477,666 km (0.086 R)
• M3: 943,364 km (0.091 R)
• M4: 1,298,958 km (0.115 R)
• M5: 1,812,528 km (0.115 R)
• M6: 2,543,613 km (0.078 R)
• M7: 3,140,508 km (0.075 R)
• M8: 3,703,295 km (0.091 R)
• M9: 4,543,138 km (0.068 R)
• M10: 5,092,910 km (0.117 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.74 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 995.8

Radius: 11.8

Gravity: 7.15 G

Time & Orbit

Eccentricity (e): 0.016

Orbit Range: 1.71 AU - 1.77 AU

Year: 1459 Days

Day: 7.3 Hours

Environment

Temp: -193 °C

Axial Tilt: 28.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 73,622,905 km

• M1: 156,180 km (0.089 R)
• M2: 569,669 km (0.026 R)
• M3: 1,086,380 km (0.107 R)
• M4: 1,635,703 km (0.1 R)
• M5: 2,066,246 km (0.06 R)
• M6: 2,834,880 km (0.039 R)
• M7: 3,855,736 km (0.12 R)
• M8: 4,470,732 km (0.094 R)
• M9: 6,210,855 km (0.043 R)
• M10: 6,977,544 km (0.116 R)
• M11: 7,607,351 km (0.096 R)
• M12: 8,274,557 km (0.069 R)
• M13: 10,165,774 km (0.063 R)
• M14: 10,689,217 km (0.119 R)
• M15: 12,057,888 km (0.102 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.12 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 157.8

Radius: 9.4

Gravity: 1.79 G

Time & Orbit

Eccentricity (e): 0.074

Orbit Range: 1.96 AU - 2.28 AU

Year: 1963 Days

Day: 6 Hours

Environment

Temp: -192 °C

Axial Tilt: 130.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 73,622,905 km

• M1: 120,576 km (0.1 R)
• M2: 459,864 km (0.075 R)
• M3: 753,973 km (0.057 R)
• M4: 1,167,911 km (0.057 R)
• M5: 1,544,000 km (0.062 R)
• M6: 2,235,142 km (0.089 R)
• M7: 2,627,836 km (0.055 R)
• M8: 2,923,442 km (0.034 R)
• M9: 3,947,589 km (0.107 R)
• M10: 4,611,354 km (0.115 R)
• M11: 6,663,987 km (0.117 R)
• M12: 7,030,202 km (0.091 R)
• M13: 7,828,157 km (0.106 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.32 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 164.8

Radius: 9.8

Gravity: 1.72 G

Time & Orbit

Eccentricity (e): 0.123

Orbit Range: 2.03 AU - 2.61 AU

Year: 2247 Days

Day: 12 Hours

Environment

Temp: -197 °C

Axial Tilt: 18.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 73,622,905 km

• M1: 121,922 km (0.114 R)
• M2: 440,267 km (0.053 R)
• M3: 803,640 km (0.05 R)
• M4: 1,895,405 km (0.087 R)
• M5: 3,972,422 km (0.071 R)
• M6: 4,663,714 km (0.093 R)
• M7: 6,397,254 km (0.117 R)
• M8: 7,125,197 km (0.063 R)
• M9: 9,229,889 km (0.084 R)
• M10: 10,189,859 km (0.107 R)
• M11: 10,598,411 km (0.114 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.23 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 540.1

Radius: 14.3

Gravity: 2.64 G

Time & Orbit

Eccentricity (e): 0.149

Orbit Range: 2.75 AU - 3.71 AU

Year: 3691 Days

Day: 12.6 Hours

Environment

Temp: -213 °C

Axial Tilt: 16.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 73,622,905 km

• M1: 181,761 km (0.104 R)
• M2: 637,885 km (0.098 R)
• M3: 1,468,004 km (0.093 R)
• M4: 2,129,974 km (0.067 R)
• M5: 2,837,572 km (0.089 R)
• M6: 3,757,450 km (0.11 R)
• M7: 4,342,527 km (0.101 R)
• M8: 5,258,964 km (0.119 R)
• M9: 6,300,763 km (0.097 R)
• M10: 8,476,066 km (0.111 R)
• M11: 9,601,341 km (0.106 R)
• M12: 10,338,858 km (0.05 R)
• M13: 10,823,855 km (0.101 R)
• M14: 13,011,275 km (0.085 R)
• M15: 13,673,245 km (0.117 R)
• M16: 18,420,883 km (0.114 R)

Planet 8 - Gas Giant

Semi-Major Axis: 4.43 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 418.1

Radius: 10.2

Gravity: 4.02 G

Time & Orbit

Eccentricity (e): 0.035

Orbit Range: 4.27 AU - 4.59 AU

Year: 5928 Days

Day: 13.9 Hours

Environment

Temp: -213 °C

Axial Tilt: 32.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 73,622,905 km

• M1: 126,859 km (0.114 R)
• M2: 1,493,286 km (0.085 R)
• M3: 2,288,997 km (0.107 R)
• M4: 2,853,430 km (0.114 R)
• M5: 3,188,379 km (0.118 R)
• M6: 3,676,368 km (0.087 R)
• M7: 4,051,559 km (0.099 R)
• M8: 6,053,777 km (0.081 R)
• M9: 6,421,489 km (0.099 R)
• M10: 6,968,119 km (0.026 R)
• M11: 7,476,004 km (0.091 R)
• M12: 9,552,273 km (0.046 R)
• M13: 15,534,542 km (0.066 R)
• M14: 21,021,642 km (0.106 R)
• M15: 21,654,142 km (0.108 R)
• M16: 22,226,952 km (0.109 R)
• M17: 24,696,963 km (0.062 R)

Planet 9 - Ice Giant

Semi-Major Axis: 9.29 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 765.8

Radius: 5

Gravity: 30.63 G

Time & Orbit

Eccentricity (e): 0.234

Orbit Range: 7.12 AU - 11.46 AU

Year: 18003 Days

Day: 17.1 Hours

Environment

Temp: -222 °C

Axial Tilt: 38.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (33)

Outer Limit: 73,622,905 km

• M1: 62,382 km (0.113 R)
• M2: 449,691 km (0.108 R)
• M3: 607,667 km (0.107 R)
• M4: 1,267,692 km (0.087 R)
• M5: 1,542,504 km (0.066 R)
• M6: 2,564,108 km (0.029 R)
• M7: 2,729,862 km (0.076 R)
• M8: 2,902,647 km (0.105 R)
• M9: 3,297,885 km (0.088 R)
• M10: 4,561,389 km (0.111 R)
• M11: 4,840,987 km (0.101 R)
• M12: 5,244,153 km (0.094 R)
• M13: 5,434,591 km (0.062 R)
• M14: 6,500,775 km (0.039 R)
• M15: 7,797,340 km (0.084 R)
• M16: 8,769,577 km (0.098 R)
• M17: 9,423,768 km (0.072 R)
• M18: 11,013,694 km (0.093 R)
• M19: 11,389,783 km (0.086 R)
• M20: 12,035,747 km (0.116 R)
• M21: 12,980,607 km (0.094 R)
• M22: 23,499,582 km (0.064 R)
• M23: 27,176,847 km (0.119 R)
• M24: 28,094,630 km (0.088 R)
• M25: 29,151,539 km (0.085 R)
• M26: 31,469,558 km (0.11 R)
• M27: 32,609,194 km (0.065 R)
• M28: 34,970,597 km (0.12 R)
• M29: 37,443,449 km (0.091 R)
• M30: 47,342,341 km (0.093 R)
• M31: 51,224,106 km (0.12 R)
• M32: 60,577,414 km (0.093 R)
• M33: 69,934,761 km (0.115 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: 281 - 11,162 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit