🌌 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: 3.99

Radius: 1.74

Gravity: 1.32 G

Time & Orbit

Eccentricity (e): 0.231

Orbit Range: 0.42 AU - 0.68 AU

Year: 259 Days

Day: 38 Hours

Environment

Temp: -112 °C

Axial Tilt: 25.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 88,306,677 km

• M1: 604,675 km (0.117 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.8 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 304.6

Radius: 9.7

Gravity: 3.24 G

Time & Orbit

Eccentricity (e): 0.092

Orbit Range: 0.73 AU - 0.87 AU

Year: 455 Days

Day: 14.4 Hours

Environment

Temp: -144 °C

Axial Tilt: 23.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 88,306,677 km

• M1: 120,576 km (0.115 R)
• M2: 438,322 km (0.077 R)
• M3: 1,002,306 km (0.092 R)
• M4: 1,316,910 km (0.108 R)
• M5: 1,632,262 km (0.098 R)
• M6: 1,946,268 km (0.101 R)
• M7: 2,516,535 km (0.076 R)
• M8: 2,851,335 km (0.093 R)
• M9: 3,645,850 km (0.081 R)
• M10: 4,126,508 km (0.039 R)
• M11: 4,461,308 km (0.053 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.15 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 131.7

Radius: 8.3

Gravity: 1.91 G

Time & Orbit

Eccentricity (e): 0.136

Orbit Range: 0.99 AU - 1.31 AU

Year: 784 Days

Day: 13.4 Hours

Environment

Temp: -165 °C

Axial Tilt: 38.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 88,306,677 km

• M1: 103,223 km (0.092 R)
• M2: 503,546 km (0.08 R)
• M3: 885,021 km (0.12 R)
• M4: 1,154,297 km (0.111 R)
• M5: 1,466,658 km (0.108 R)
• M6: 2,423,336 km (0.069 R)
• M7: 2,972,958 km (0.12 R)
• M8: 3,440,751 km (0.111 R)
• M9: 4,019,994 km (0.078 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.41 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 998.2

Radius: 14.2

Gravity: 4.95 G

Time & Orbit

Eccentricity (e): 0.187

Orbit Range: 1.15 AU - 1.67 AU

Year: 1065 Days

Day: 9.8 Hours

Environment

Temp: -179 °C

Axial Tilt: 17.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 88,306,677 km

• M1: 176,675 km (0.091 R)
• M2: 733,179 km (0.093 R)
• M3: 1,515,277 km (0.098 R)
• M4: 2,188,916 km (0.107 R)
• M5: 2,853,729 km (0.064 R)
• M6: 3,876,230 km (0.109 R)
• M7: 4,972,633 km (0.073 R)
• M8: 6,833,631 km (0.079 R)
• M9: 7,962,347 km (0.041 R)
• M10: 8,917,080 km (0.108 R)
• M11: 10,986,916 km (0.11 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.08 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 842.3

Radius: 12.9

Gravity: 5.06 G

Time & Orbit

Eccentricity (e): 0.118

Orbit Range: 2.72 AU - 3.44 AU

Year: 3437 Days

Day: 13.3 Hours

Environment

Temp: -205 °C

Axial Tilt: 34.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 88,306,677 km

• M1: 160,668 km (0.032 R)
• M2: 829,670 km (0.089 R)
• M3: 1,634,058 km (0.111 R)
• M4: 2,278,525 km (0.08 R)
• M5: 3,105,801 km (0.106 R)
• M6: 3,701,051 km (0.114 R)
• M7: 5,224,107 km (0.052 R)
• M8: 5,676,940 km (0.029 R)
• M9: 8,137,077 km (0.104 R)
• M10: 9,083,134 km (0.073 R)
• M11: 15,698,801 km (0.092 R)
• M12: 17,047,575 km (0.07 R)
• M13: 17,455,229 km (0.066 R)
• M14: 18,533,381 km (0.103 R)
• M15: 20,362,963 km (0.076 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.45 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 686.2

Radius: 12.3

Gravity: 4.54 G

Time & Orbit

Eccentricity (e): 0.206

Orbit Range: 3.53 AU - 5.37 AU

Year: 5969 Days

Day: 5.9 Hours

Environment

Temp: -208 °C

Axial Tilt: 52.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 88,306,677 km

• M1: 156,479 km (0.03 R)
• M2: 650,751 km (0.032 R)
• M3: 1,122,732 km (0.086 R)
• M4: 1,654,403 km (0.098 R)
• M5: 2,270,746 km (0.063 R)
• M6: 2,958,148 km (0.077 R)
• M7: 3,341,119 km (0.081 R)
• M8: 4,038,245 km (0.088 R)
• M9: 6,096,861 km (0.075 R)
• M10: 6,654,861 km (0.093 R)
• M11: 7,648,042 km (0.096 R)
• M12: 8,575,848 km (0.047 R)
• M13: 9,067,277 km (0.097 R)
• M14: 10,016,924 km (0.073 R)
• M15: 16,714,121 km (0.066 R)
• M16: 17,223,652 km (0.085 R)
• M17: 25,658,578 km (0.111 R)
• M18: 27,996,793 km (0.086 R)
• M19: 32,106,396 km (0.106 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.46 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 151

Radius: 14.9

Gravity: 0.68 G

Time & Orbit

Eccentricity (e): 0.046

Orbit Range: 4.25 AU - 4.67 AU

Year: 5989 Days

Day: 9.2 Hours

Environment

Temp: -208 °C

Axial Tilt: 7.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 88,306,677 km

• M1: 186,100 km (0.082 R)
• M2: 667,207 km (0.118 R)
• M3: 1,277,715 km (0.071 R)
• M4: 1,783,655 km (0.114 R)
• M5: 2,733,751 km (0.099 R)
• M6: 3,289,657 km (0.066 R)
• M7: 4,881,379 km (0.062 R)
• M8: 5,914,352 km (0.026 R)
• M9: 6,624,044 km (0.056 R)
• M10: 8,786,182 km (0.071 R)
• M11: 9,638,441 km (0.079 R)
• M12: 10,780,920 km (0.091 R)
• M13: 12,617,384 km (0.092 R)
• M14: 14,948,717 km (0.088 R)
• M15: 16,849,807 km (0.117 R)
• M16: 17,554,562 km (0.104 R)
• M17: 18,335,463 km (0.085 R)
• M18: 19,081,358 km (0.115 R)
• M19: 19,787,610 km (0.111 R)

Planet 8 - Ice Giant

Semi-Major Axis: 6.81 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 68.9

Radius: 7

Gravity: 1.41 G

Time & Orbit

Eccentricity (e): 0.066

Orbit Range: 6.36 AU - 7.26 AU

Year: 11299 Days

Day: 24.5 Hours

Environment

Temp: -227 °C

Axial Tilt: 29.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 88,306,677 km

• M1: 105,766 km (0.092 R)
• M2: 333,304 km (0.085 R)
• M3: 1,989,502 km (0.117 R)
• M4: 2,224,820 km (0.093 R)
• M5: 5,857,654 km (0.085 R)
• M6: 6,674,010 km (0.07 R)
• M7: 7,597,029 km (0.057 R)
• M8: 12,331,951 km (0.09 R)
• M9: 13,372,853 km (0.069 R)
• M10: 16,451,876 km (0.057 R)
• M11: 17,477,968 km (0.104 R)

Planet 9 - Ice Giant

Semi-Major Axis: 10.3 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 969.6

Radius: 6.8

Gravity: 20.97 G

Time & Orbit

Eccentricity (e): 0.138

Orbit Range: 8.88 AU - 11.72 AU

Year: 21018 Days

Day: 16.3 Hours

Environment

Temp: -240 °C

Axial Tilt: 18 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (36)

Outer Limit: 88,306,677 km

• M1: 84,523 km (0.056 R)
• M2: 311,463 km (0.071 R)
• M3: 607,667 km (0.108 R)
• M4: 844,630 km (0.049 R)
• M5: 1,319,453 km (0.089 R)
• M6: 1,582,147 km (0.078 R)
• M7: 1,919,341 km (0.089 R)
• M8: 2,514,591 km (0.116 R)
• M9: 4,200,708 km (0.105 R)
• M10: 8,070,356 km (0.098 R)
• M11: 8,340,081 km (0.111 R)
• M12: 9,361,536 km (0.071 R)
• M13: 10,274,382 km (0.07 R)
• M14: 14,053,673 km (0.096 R)
• M15: 14,365,884 km (0.03 R)
• M16: 15,330,042 km (0.114 R)
• M17: 16,251,265 km (0.066 R)
• M18: 16,769,024 km (0.027 R)
• M19: 17,120,280 km (0.077 R)
• M20: 18,668,169 km (0.088 R)
• M21: 25,103,719 km (0.071 R)
• M22: 30,866,529 km (0.083 R)
• M23: 31,660,295 km (0.031 R)
• M24: 31,927,776 km (0.116 R)
• M25: 35,689,564 km (0.083 R)
• M26: 39,118,497 km (0.097 R)
• M27: 40,360,907 km (0.077 R)
• M28: 44,245,515 km (0.1 R)
• M29: 46,278,251 km (0.103 R)
• M30: 48,549,745 km (0.095 R)
• M31: 55,032,419 km (0.105 R)
• M32: 56,788,100 km (0.045 R)
• M33: 64,828,237 km (0.11 R)
• M34: 69,006,356 km (0.036 R)
• M35: 74,299,877 km (0.12 R)
• M36: 81,602,647 km (0.098 R)

Kuiper Belt

Range: 30 - 45 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 178 - 10,933 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit