🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.34 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.67 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.25

Radius: 1.78

Gravity: 1.34 G

Time & Orbit

Eccentricity (e): 0.153

Orbit Range: 0.57 AU - 0.77 AU

Year: 360 Days

Day: 18 Hours

Environment

Temp: -134 °C

Axial Tilt: 34.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.74 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 655.6

Radius: 9.5

Gravity: 7.26 G

Time & Orbit

Eccentricity (e): 0.087

Orbit Range: 0.68 AU - 0.8 AU

Year: 418 Days

Day: 11.4 Hours

Environment

Temp: -144 °C

Axial Tilt: 18.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 69,155,684 km

• M1: 118,781 km (0.106 R)
• M2: 421,268 km (0.068 R)
• M3: 722,408 km (0.103 R)
• M4: 1,085,482 km (0.112 R)
• M5: 1,777,671 km (0.111 R)
• M6: 2,213,600 km (0.074 R)
• M7: 3,055,088 km (0.104 R)
• M8: 3,647,046 km (0.103 R)
• M9: 4,341,480 km (0.027 R)
• M10: 5,199,573 km (0.055 R)
• M11: 5,553,223 km (0.118 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.83 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 917.1

Radius: 8.4

Gravity: 13 G

Time & Orbit

Eccentricity (e): 0.228

Orbit Range: 1.41 AU - 2.25 AU

Year: 1624 Days

Day: 5.9 Hours

Environment

Temp: -191 °C

Axial Tilt: 0.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 69,155,684 km

• M1: 104,419 km (0.034 R)
• M2: 401,820 km (0.077 R)
• M3: 729,290 km (0.069 R)
• M4: 1,142,180 km (0.066 R)
• M5: 1,408,015 km (0.118 R)
• M6: 2,288,249 km (0.092 R)
• M7: 2,789,402 km (0.066 R)
• M8: 3,058,678 km (0.116 R)
• M9: 3,791,408 km (0.047 R)
• M10: 4,085,219 km (0.074 R)
• M11: 5,578,056 km (0.116 R)
• M12: 7,923,750 km (0.069 R)
• M13: 8,560,738 km (0.109 R)
• M14: 9,003,997 km (0.057 R)
• M15: 10,179,537 km (0.086 R)
• M16: 10,858,861 km (0.066 R)
• M17: 12,669,144 km (0.104 R)
• M18: 15,585,106 km (0.053 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.95 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 152.5

Radius: 9.9

Gravity: 1.56 G

Time & Orbit

Eccentricity (e): 0.179

Orbit Range: 1.6 AU - 2.3 AU

Year: 1786 Days

Day: 8.9 Hours

Environment

Temp: -187 °C

Axial Tilt: 28.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 69,155,684 km

• M1: 123,119 km (0.097 R)
• M2: 449,841 km (0.09 R)
• M3: 881,879 km (0.076 R)
• M4: 1,239,269 km (0.097 R)
• M5: 1,736,831 km (0.047 R)
• M6: 2,551,242 km (0.103 R)
• M7: 3,188,230 km (0.081 R)
• M8: 5,026,488 km (0.115 R)
• M9: 5,706,261 km (0.1 R)
• M10: 6,403,387 km (0.085 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.29 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 835.1

Radius: 11.8

Gravity: 6 G

Time & Orbit

Eccentricity (e): 0.093

Orbit Range: 2.08 AU - 2.5 AU

Year: 2273 Days

Day: 6.3 Hours

Environment

Temp: -196 °C

Axial Tilt: 38.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 69,155,684 km

• M1: 146,756 km (0.114 R)
• M2: 557,850 km (0.119 R)
• M3: 1,007,841 km (0.09 R)
• M4: 1,499,419 km (0.114 R)
• M5: 2,001,021 km (0.091 R)
• M6: 2,996,445 km (0.097 R)
• M7: 4,093,447 km (0.117 R)
• M8: 4,613,898 km (0.051 R)
• M9: 5,015,717 km (0.047 R)
• M10: 6,283,559 km (0.1 R)
• M11: 6,778,579 km (0.106 R)
• M12: 7,600,619 km (0.105 R)
• M13: 8,131,392 km (0.08 R)
• M14: 9,232,433 km (0.083 R)
• M15: 9,728,499 km (0.077 R)
• M16: 11,852,191 km (0.047 R)
• M17: 12,913,139 km (0.034 R)
• M18: 13,990,243 km (0.115 R)
• M19: 14,884,539 km (0.079 R)
• M20: 16,528,022 km (0.093 R)
• M21: 18,069,478 km (0.094 R)
• M22: 18,622,691 km (0.118 R)

Planet 6 - Ice Giant

Semi-Major Axis: 7.28 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 163.5

Radius: 7.1

Gravity: 3.24 G

Time & Orbit

Eccentricity (e): 0.238

Orbit Range: 5.55 AU - 9.01 AU

Year: 12886 Days

Day: 23.5 Hours

Environment

Temp: -230 °C

Axial Tilt: 23.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 69,155,684 km

• M1: 96,341 km (0.085 R)
• M2: 488,287 km (0.089 R)
• M3: 764,296 km (0.118 R)
• M4: 1,316,312 km (0.103 R)
• M5: 1,659,489 km (0.078 R)
• M6: 2,319,216 km (0.108 R)
• M7: 4,169,741 km (0.109 R)
• M8: 4,425,853 km (0.076 R)
• M9: 5,083,635 km (0.077 R)
• M10: 6,869,983 km (0.101 R)
• M11: 7,750,366 km (0.104 R)
• M12: 8,020,690 km (0.1 R)
• M13: 8,703,754 km (0.045 R)
• M14: 9,038,255 km (0.118 R)
• M15: 10,369,825 km (0.089 R)
• M16: 11,426,136 km (0.089 R)
• M17: 13,196,776 km (0.116 R)
• M18: 13,694,488 km (0.109 R)
• M19: 13,919,783 km (0.071 R)
• M20: 14,262,212 km (0.074 R)
• M21: 17,012,419 km (0.09 R)
• M22: 19,665,687 km (0.114 R)
• M23: 24,930,485 km (0.109 R)
• M24: 25,605,620 km (0.08 R)
• M25: 32,240,735 km (0.097 R)

Planet 7 - Ice Giant

Semi-Major Axis: 8.09 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 702.4

Radius: 3.5

Gravity: 57.34 G

Time & Orbit

Eccentricity (e): 0.191

Orbit Range: 6.54 AU - 9.64 AU

Year: 15095 Days

Day: 20.7 Hours

Environment

Temp: -229 °C

Axial Tilt: 27 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (37)

Outer Limit: 69,155,684 km

• M1: 50,115 km (0.087 R)
• M2: 193,131 km (0.116 R)
• M3: 318,793 km (0.104 R)
• M4: 507,586 km (0.099 R)
• M5: 1,109,867 km (0.111 R)
• M6: 1,530,386 km (0.116 R)
• M7: 2,245,614 km (0.102 R)
• M8: 2,630,978 km (0.1 R)
• M9: 2,863,154 km (0.11 R)
• M10: 3,670,683 km (0.12 R)
• M11: 4,488,684 km (0.074 R)
• M12: 7,988,676 km (0.119 R)
• M13: 8,132,439 km (0.091 R)
• M14: 8,376,134 km (0.115 R)
• M15: 9,032,271 km (0.088 R)
• M16: 9,722,066 km (0.093 R)
• M17: 10,968,366 km (0.09 R)
• M18: 12,965,199 km (0.097 R)
• M19: 13,635,846 km (0.119 R)
• M20: 16,012,507 km (0.097 R)
• M21: 16,627,654 km (0.104 R)
• M22: 24,668,240 km (0.063 R)
• M23: 25,178,369 km (0.108 R)
• M24: 26,219,720 km (0.064 R)
• M25: 26,965,615 km (0.092 R)
• M26: 27,289,494 km (0.099 R)
• M27: 30,672,799 km (0.074 R)
• M28: 33,448,438 km (0.069 R)
• M29: 38,665,963 km (0.108 R)
• M30: 42,770,480 km (0.1 R)
• M31: 45,611,344 km (0.118 R)
• M32: 49,537,540 km (0.07 R)
• M33: 51,665,420 km (0.076 R)
• M34: 54,538,896 km (0.083 R)
• M35: 55,752,434 km (0.075 R)
• M36: 59,683,417 km (0.065 R)
• M37: 60,417,494 km (0.105 R)

Planet 8 - Ice Giant

Semi-Major Axis: 10.47 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 416.5

Radius: 6.9

Gravity: 8.75 G

Time & Orbit

Eccentricity (e): 0.1

Orbit Range: 9.42 AU - 11.52 AU

Year: 22224 Days

Day: 21 Hours

Environment

Temp: -226 °C

Axial Tilt: 2.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 69,155,684 km

• M1: 85,869 km (0.083 R)
• M2: 333,154 km (0.114 R)
• M3: 680,820 km (0.105 R)
• M4: 1,415,345 km (0.063 R)
• M5: 2,478,837 km (0.079 R)
• M6: 2,848,792 km (0.039 R)
• M7: 5,577,308 km (0.079 R)
• M8: 6,852,779 km (0.116 R)
• M9: 9,140,579 km (0.098 R)
• M10: 10,195,095 km (0.106 R)
• M11: 11,266,814 km (0.111 R)
• M12: 15,763,427 km (0.073 R)
• M13: 17,604,378 km (0.104 R)
• M14: 18,792,634 km (0.059 R)
• M15: 26,298,109 km (0.091 R)
• M16: 32,361,311 km (0.078 R)
• M17: 32,863,062 km (0.063 R)
• M18: 35,053,175 km (0.066 R)
• M19: 36,656,565 km (0.1 R)
• M20: 45,725,487 km (0.077 R)
• M21: 51,112,057 km (0.08 R)

Kuiper Belt

Range: 30 - 48 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 494 - 11,789 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit