🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.28 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.55 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.83

Radius: 1.71

Gravity: 1.31 G

Time & Orbit

Eccentricity (e): 0.042

Orbit Range: 0.53 AU - 0.57 AU

Year: 268 Days

Day: 39.1 Hours

Environment

Temp: -122 °C

Axial Tilt: 90.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.68 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 61.4

Radius: 10.7

Gravity: 0.54 G

Time & Orbit

Eccentricity (e): 0.227

Orbit Range: 0.53 AU - 0.83 AU

Year: 368 Days

Day: 6 Hours

Environment

Temp: -143 °C

Axial Tilt: 0.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (5)

Outer Limit: 33,438,303 km

• M1: 133,142 km (0.066 R)
• M2: 477,965 km (0.11 R)
• M3: 911,201 km (0.104 R)
• M4: 1,409,062 km (0.11 R)
• M5: 1,951,953 km (0.118 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.92 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 695.7

Radius: 12.4

Gravity: 4.52 G

Time & Orbit

Eccentricity (e): 0.216

Orbit Range: 0.72 AU - 1.12 AU

Year: 579 Days

Day: 8.1 Hours

Environment

Temp: -160 °C

Axial Tilt: 15.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 33,438,303 km

• M1: 156,779 km (0.105 R)
• M2: 566,378 km (0.119 R)
• M3: 1,052,122 km (0.057 R)
• M4: 1,755,681 km (0.088 R)
• M5: 2,210,458 km (0.081 R)
• M6: 2,700,990 km (0.051 R)
• M7: 3,350,394 km (0.1 R)
• M8: 4,366,163 km (0.074 R)
• M9: 4,832,610 km (0.052 R)
• M10: 5,384,177 km (0.088 R)
• M11: 5,847,930 km (0.088 R)
• M12: 7,167,832 km (0.107 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.98 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 941.3

Radius: 8.6

Gravity: 12.73 G

Time & Orbit

Eccentricity (e): 0.099

Orbit Range: 0.88 AU - 1.08 AU

Year: 636 Days

Day: 5.6 Hours

Environment

Temp: -160 °C

Axial Tilt: 47.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 33,438,303 km

• M1: 106,962 km (0.062 R)
• M2: 376,687 km (0.108 R)
• M3: 689,347 km (0.103 R)
• M4: 972,237 km (0.118 R)
• M5: 1,487,302 km (0.101 R)
• M6: 1,955,095 km (0.111 R)
• M7: 2,485,718 km (0.113 R)
• M8: 2,874,373 km (0.099 R)
• M9: 3,369,842 km (0.112 R)
• M10: 3,673,825 km (0.097 R)
• M11: 4,164,356 km (0.107 R)
• M12: 4,466,244 km (0.089 R)
• M13: 4,955,130 km (0.092 R)
• M14: 5,784,052 km (0.098 R)
• M15: 6,659,648 km (0.086 R)
• M16: 7,527,914 km (0.113 R)
• M17: 7,905,051 km (0.097 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.41 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 651.6

Radius: 11.7

Gravity: 4.76 G

Time & Orbit

Eccentricity (e): 0.128

Orbit Range: 1.23 AU - 1.59 AU

Year: 1098 Days

Day: 7.8 Hours

Environment

Temp: -167 °C

Axial Tilt: 41.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 33,438,303 km

• M1: 147,055 km (0.107 R)
• M2: 823,087 km (0.116 R)
• M3: 1,252,882 km (0.115 R)
• M4: 1,751,492 km (0.065 R)
• M5: 2,141,643 km (0.113 R)
• M6: 2,602,405 km (0.11 R)
• M7: 4,809,123 km (0.087 R)
• M8: 6,005,008 km (0.117 R)
• M9: 7,614,232 km (0.085 R)
• M10: 8,669,645 km (0.03 R)
• M11: 9,348,221 km (0.109 R)
• M12: 10,400,942 km (0.086 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.57 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 619.5

Radius: 11.2

Gravity: 4.94 G

Time & Orbit

Eccentricity (e): 0.076

Orbit Range: 2.37 AU - 2.77 AU

Year: 2703 Days

Day: 14.8 Hours

Environment

Temp: -188 °C

Axial Tilt: 8.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 33,438,303 km

• M1: 147,354 km (0.065 R)
• M2: 509,530 km (0.104 R)
• M3: 862,581 km (0.072 R)
• M4: 2,214,048 km (0.083 R)
• M5: 2,859,862 km (0.04 R)
• M6: 3,739,648 km (0.106 R)
• M7: 4,858,640 km (0.074 R)
• M8: 5,471,393 km (0.099 R)
• M9: 6,377,058 km (0.09 R)
• M10: 8,093,993 km (0.068 R)
• M11: 9,552,422 km (0.045 R)
• M12: 11,139,207 km (0.053 R)
• M13: 11,746,425 km (0.078 R)
• M14: 12,590,306 km (0.092 R)
• M15: 13,027,132 km (0.077 R)
• M16: 14,398,795 km (0.048 R)
• M17: 19,147,181 km (0.053 R)

Planet 7 - Ice Giant

Semi-Major Axis: 7.53 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 557.8

Radius: 6.7

Gravity: 12.43 G

Time & Orbit

Eccentricity (e): 0.177

Orbit Range: 6.2 AU - 8.86 AU

Year: 13555 Days

Day: 22.9 Hours

Environment

Temp: -224 °C

Axial Tilt: 15.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (37)

Outer Limit: 33,438,303 km

• M1: 84,224 km (0.116 R)
• M2: 307,573 km (0.116 R)
• M3: 534,513 km (0.051 R)
• M4: 749,336 km (0.09 R)
• M5: 1,363,884 km (0.066 R)
• M6: 2,122,943 km (0.068 R)
• M7: 2,410,171 km (0.052 R)
• M8: 2,993,154 km (0.094 R)
• M9: 3,508,369 km (0.104 R)
• M10: 3,719,751 km (0.1 R)
• M11: 4,778,156 km (0.07 R)
• M12: 5,587,181 km (0.072 R)
• M13: 6,289,693 km (0.084 R)
• M14: 8,232,820 km (0.095 R)
• M15: 8,750,877 km (0.097 R)
• M16: 9,851,768 km (0.101 R)
• M17: 10,114,462 km (0.07 R)
• M18: 10,489,803 km (0.088 R)
• M19: 14,635,758 km (0.067 R)
• M20: 14,909,073 km (0.051 R)
• M21: 18,459,629 km (0.116 R)
• M22: 19,101,554 km (0.085 R)
• M23: 19,345,997 km (0.065 R)
• M24: 21,290,619 km (0.089 R)
• M25: 21,553,612 km (0.065 R)
• M26: 22,445,515 km (0.118 R)
• M27: 23,923,542 km (0.116 R)
• M28: 25,073,800 km (0.054 R)
• M29: 30,044,788 km (0.12 R)
• M30: 30,265,145 km (0.098 R)
• M31: 32,412,174 km (0.104 R)
• M32: 35,022,507 km (0.107 R)
• M33: 37,514,359 km (0.06 R)
• M34: 45,549,410 km (0.095 R)
• M35: 50,663,563 km (0.111 R)
• M36: 51,132,253 km (0.118 R)
• M37: 51,761,910 km (0.062 R)

Planet 8 - Ice Giant

Semi-Major Axis: 9.51 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 264.7

Radius: 3.8

Gravity: 18.33 G

Time & Orbit

Eccentricity (e): 0.044

Orbit Range: 9.09 AU - 9.93 AU

Year: 19239 Days

Day: 18.5 Hours

Environment

Temp: -233 °C

Axial Tilt: 2.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 33,438,303 km

• M1: 48,171 km (0.045 R)
• M2: 447,298 km (0.109 R)
• M3: 942,018 km (0.093 R)
• M4: 1,109,268 km (0.032 R)
• M5: 1,446,611 km (0.096 R)
• M6: 1,717,832 km (0.054 R)
• M7: 2,075,820 km (0.104 R)
• M8: 3,711,972 km (0.106 R)
• M9: 4,675,083 km (0.112 R)
• M10: 4,834,255 km (0.055 R)
• M11: 5,096,500 km (0.118 R)
• M12: 5,721,221 km (0.092 R)
• M13: 6,914,264 km (0.106 R)
• M14: 7,678,111 km (0.067 R)
• M15: 9,073,709 km (0.112 R)
• M16: 10,145,578 km (0.094 R)
• M17: 10,961,036 km (0.105 R)
• M18: 11,356,124 km (0.109 R)
• M19: 13,475,327 km (0.032 R)
• M20: 14,059,956 km (0.104 R)
• M21: 20,524,828 km (0.094 R)
• M22: 28,195,309 km (0.073 R)
• M23: 40,308,099 km (0.039 R)
• M24: 53,521,780 km (0.039 R)

Planet 9 - Ice Giant

Semi-Major Axis: 11 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 40.6

Radius: 7.1

Gravity: 0.81 G

Time & Orbit

Eccentricity (e): 0.235

Orbit Range: 8.42 AU - 13.59 AU

Year: 23933 Days

Day: 23.6 Hours

Environment

Temp: -232 °C

Axial Tilt: 25.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 33,438,303 km

• M1: 114,293 km (0.118 R)
• M2: 438,621 km (0.115 R)
• M3: 1,763,908 km (0.073 R)
• M4: 3,916,622 km (0.066 R)
• M5: 7,998,101 km (0.043 R)
• M6: 10,667,375 km (0.101 R)
• M7: 11,824,066 km (0.114 R)
• M8: 12,849,859 km (0.063 R)
• M9: 13,989,645 km (0.109 R)
• M10: 16,036,593 km (0.094 R)
• M11: 29,226,936 km (0.051 R)
• M12: 30,620,141 km (0.1 R)

Kuiper Belt

Range: 30 - 54 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 265 - 10,974 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit