🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.5 AU

Composition

Type: Main (Rocky/Icy Mix)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Gas Giant

Semi-Major Axis: 0.99 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 663.9

Radius: 10.4

Gravity: 6.14 G

Time & Orbit

Eccentricity (e): 0.084

Orbit Range: 0.91 AU - 1.07 AU

Year: 657 Days

Day: 6.3 Hours

Environment

Temp: -174 °C

Axial Tilt: 14.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 27,445,033 km

• M1: 129,402 km (0.087 R)
• M2: 463,305 km (0.049 R)
• M3: 807,529 km (0.072 R)
• M4: 1,372,112 km (0.048 R)
• M5: 2,001,021 km (0.11 R)
• M6: 2,464,625 km (0.037 R)
• M7: 2,975,352 km (0.109 R)
• M8: 3,830,603 km (0.033 R)
• M9: 4,534,162 km (0.119 R)
• M10: 5,026,788 km (0.088 R)
• M11: 5,356,950 km (0.074 R)
• M12: 6,119,450 km (0.057 R)
• M13: 6,516,932 km (0.097 R)
• M14: 7,699,802 km (0.098 R)

Planet 2 - Gas Giant

Semi-Major Axis: 2.1 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 314

Radius: 14.8

Gravity: 1.43 G

Time & Orbit

Eccentricity (e): 0.153

Orbit Range: 1.78 AU - 2.42 AU

Year: 2029 Days

Day: 8.7 Hours

Environment

Temp: -196 °C

Axial Tilt: 24 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 27,445,033 km

• M1: 184,005 km (0.086 R)
• M2: 687,253 km (0.102 R)
• M3: 1,212,341 km (0.088 R)
• M4: 1,862,493 km (0.068 R)
• M5: 2,860,610 km (0.095 R)
• M6: 3,984,240 km (0.101 R)
• M7: 5,512,083 km (0.062 R)
• M8: 7,936,317 km (0.102 R)
• M9: 8,697,919 km (0.096 R)
• M10: 9,262,651 km (0.11 R)
• M11: 9,979,076 km (0.118 R)
• M12: 10,466,017 km (0.117 R)
• M13: 11,140,105 km (0.112 R)

Planet 3 - Gas Giant

Semi-Major Axis: 5.19 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 238

Radius: 14

Gravity: 1.21 G

Time & Orbit

Eccentricity (e): 0.085

Orbit Range: 4.75 AU - 5.63 AU

Year: 7885 Days

Day: 8.8 Hours

Environment

Temp: -215 °C

Axial Tilt: 26.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 27,445,033 km

• M1: 174,132 km (0.083 R)
• M2: 664,963 km (0.119 R)
• M3: 1,248,843 km (0.113 R)
• M4: 1,830,928 km (0.113 R)
• M5: 2,353,025 km (0.082 R)
• M6: 2,920,300 km (0.036 R)
• M7: 3,475,757 km (0.077 R)
• M8: 3,988,279 km (0.11 R)
• M9: 4,526,981 km (0.112 R)
• M10: 5,140,632 km (0.109 R)
• M11: 5,896,998 km (0.077 R)
• M12: 9,361,984 km (0.103 R)
• M13: 11,617,322 km (0.073 R)
• M14: 12,185,495 km (0.111 R)
• M15: 13,480,264 km (0.034 R)
• M16: 16,108,848 km (0.087 R)
• M17: 17,729,143 km (0.082 R)
• M18: 21,012,966 km (0.11 R)
• M19: 22,072,268 km (0.109 R)
• M20: 25,464,699 km (0.065 R)
• M21: 26,424,968 km (0.12 R)
• M22: 27,243,567 km (0.102 R)

Planet 4 - Ice Giant

Semi-Major Axis: 6.17 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 41.3

Radius: 7.9

Gravity: 0.66 G

Time & Orbit

Eccentricity (e): 0.11

Orbit Range: 5.49 AU - 6.85 AU

Year: 10220 Days

Day: 21.5 Hours

Environment

Temp: -232 °C

Axial Tilt: 48.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 27,445,033 km

• M1: 99,333 km (0.079 R)
• M2: 575,503 km (0.106 R)
• M3: 884,123 km (0.093 R)
• M4: 2,289,595 km (0.09 R)
• M5: 2,629,781 km (0.079 R)
• M6: 3,838,382 km (0.046 R)
• M7: 4,155,380 km (0.117 R)
• M8: 6,011,142 km (0.063 R)
• M9: 7,418,259 km (0.088 R)
• M10: 7,974,763 km (0.12 R)
• M11: 11,383,351 km (0.108 R)
• M12: 12,165,598 km (0.091 R)
• M13: 16,007,571 km (0.089 R)
• M14: 16,467,434 km (0.089 R)
• M15: 17,041,441 km (0.114 R)

Planet 5 - Ice Giant

Semi-Major Axis: 6.63 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 42.3

Radius: 4.5

Gravity: 2.09 G

Time & Orbit

Eccentricity (e): 0.11

Orbit Range: 5.9 AU - 7.36 AU

Year: 11384 Days

Day: 20.8 Hours

Environment

Temp: -232 °C

Axial Tilt: 27.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 27,445,033 km

• M1: 65,075 km (0.119 R)
• M2: 422,165 km (0.092 R)
• M3: 3,122,856 km (0.108 R)
• M4: 5,158,135 km (0.074 R)
• M5: 10,603,347 km (0.064 R)
• M6: 11,750,015 km (0.117 R)
• M7: 12,441,008 km (0.083 R)
• M8: 12,796,602 km (0.03 R)
• M9: 15,733,657 km (0.05 R)
• M10: 17,330,465 km (0.119 R)
• M11: 19,983,882 km (0.11 R)

Planet 6 - Ice Giant

Semi-Major Axis: 6.85 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 142.5

Radius: 3.6

Gravity: 11 G

Time & Orbit

Eccentricity (e): 0.246

Orbit Range: 5.16 AU - 8.54 AU

Year: 11955 Days

Day: 19.2 Hours

Environment

Temp: -224 °C

Axial Tilt: 6.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 27,445,033 km

• M1: 46,076 km (0.117 R)
• M2: 246,986 km (0.074 R)
• M3: 848,370 km (0.087 R)
• M4: 978,220 km (0.119 R)
• M5: 1,256,622 km (0.108 R)
• M6: 5,447,606 km (0.077 R)
• M7: 8,109,551 km (0.11 R)
• M8: 10,223,818 km (0.06 R)
• M9: 13,630,909 km (0.081 R)
• M10: 15,205,726 km (0.092 R)
• M11: 15,736,649 km (0.118 R)
• M12: 17,789,132 km (0.105 R)
• M13: 18,845,592 km (0.066 R)
• M14: 21,890,806 km (0.107 R)
• M15: 23,257,383 km (0.079 R)
• M16: 24,679,759 km (0.084 R)
• M17: 27,006,006 km (0.04 R)

Planet 7 - Ice Giant

Semi-Major Axis: 7.54 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 599.5

Radius: 3.5

Gravity: 48.94 G

Time & Orbit

Eccentricity (e): 0.206

Orbit Range: 5.99 AU - 9.09 AU

Year: 13807 Days

Day: 15.2 Hours

Environment

Temp: -230 °C

Axial Tilt: 37.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (40)

Outer Limit: 27,445,033 km

• M1: 43,982 km (0.102 R)
• M2: 518,656 km (0.117 R)
• M3: 656,735 km (0.067 R)
• M4: 819,048 km (0.088 R)
• M5: 1,237,773 km (0.074 R)
• M6: 2,160,044 km (0.096 R)
• M7: 2,335,821 km (0.099 R)
• M8: 2,584,902 km (0.069 R)
• M9: 3,491,614 km (0.094 R)
• M10: 3,789,314 km (0.073 R)
• M11: 4,133,090 km (0.119 R)
• M12: 4,751,677 km (0.118 R)
• M13: 5,254,476 km (0.099 R)
• M14: 6,054,974 km (0.099 R)
• M15: 6,286,551 km (0.119 R)
• M16: 7,272,850 km (0.077 R)
• M17: 9,859,996 km (0.064 R)
• M18: 10,674,706 km (0.106 R)
• M19: 11,299,875 km (0.075 R)
• M20: 14,180,083 km (0.115 R)
• M21: 16,226,881 km (0.085 R)
• M22: 16,523,833 km (0.1 R)
• M23: 19,278,378 km (0.113 R)
• M24: 20,633,735 km (0.099 R)
• M25: 21,246,189 km (0.101 R)
• M26: 21,423,313 km (0.117 R)
• M27: 28,586,059 km (0.062 R)
• M28: 29,566,523 km (0.055 R)
• M29: 30,456,481 km (0.053 R)
• M30: 30,794,871 km (0.077 R)
• M31: 31,940,791 km (0.098 R)
• M32: 33,114,835 km (0.057 R)
• M33: 35,300,011 km (0.06 R)
• M34: 35,923,535 km (0.087 R)
• M35: 40,905,144 km (0.104 R)
• M36: 43,417,640 km (0.11 R)
• M37: 48,593,577 km (0.079 R)
• M38: 49,831,799 km (0.11 R)
• M39: 54,496,560 km (0.078 R)
• M40: 56,170,261 km (0.058 R)

Planet 8 - Ice Giant

Semi-Major Axis: 8.56 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 46.1

Radius: 3

Gravity: 5.12 G

Time & Orbit

Eccentricity (e): 0.084

Orbit Range: 7.84 AU - 9.28 AU

Year: 16701 Days

Day: 21.4 Hours

Environment

Temp: -229 °C

Axial Tilt: 1.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 27,445,033 km

• M1: 54,753 km (0.042 R)
• M2: 156,031 km (0.12 R)
• M3: 3,588,105 km (0.107 R)
• M4: 8,354,592 km (0.113 R)
• M5: 12,795,106 km (0.068 R)
• M6: 15,765,372 km (0.104 R)
• M7: 19,489,461 km (0.079 R)
• M8: 20,622,964 km (0.084 R)
• M9: 23,984,129 km (0.062 R)
• M10: 27,445,076 km (0.116 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: 321 - 10,905 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit