🌌 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: 0.59 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.3

Radius: 1.61

Gravity: 1.27 G

Time & Orbit

Eccentricity (e): 0.071

Orbit Range: 0.55 AU - 0.63 AU

Year: 297 Days

Day: 45 Hours

Environment

Temp: -120 °C

Axial Tilt: 11.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 72,214,832 km

• M1: 471,084 km (0.096 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.78 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 681.7

Radius: 8.8

Gravity: 8.8 G

Time & Orbit

Eccentricity (e): 0.196

Orbit Range: 0.63 AU - 0.93 AU

Year: 452 Days

Day: 13.9 Hours

Environment

Temp: -149 °C

Axial Tilt: 20.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 72,214,832 km

• M1: 109,506 km (0.059 R)
• M2: 401,820 km (0.097 R)
• M3: 708,944 km (0.112 R)
• M4: 1,365,380 km (0.064 R)
• M5: 2,059,514 km (0.114 R)
• M6: 3,254,502 km (0.073 R)
• M7: 3,543,226 km (0.106 R)
• M8: 3,849,004 km (0.109 R)
• M9: 4,470,284 km (0.113 R)
• M10: 5,286,041 km (0.076 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.92 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 834.4

Radius: 13.2

Gravity: 4.79 G

Time & Orbit

Eccentricity (e): 0.005

Orbit Range: 0.92 AU - 0.92 AU

Year: 579 Days

Day: 5.3 Hours

Environment

Temp: -148 °C

Axial Tilt: 34 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 72,214,832 km

• M1: 164,109 km (0.112 R)
• M2: 731,534 km (0.116 R)
• M3: 1,273,826 km (0.112 R)
• M4: 1,775,278 km (0.116 R)
• M5: 2,358,710 km (0.047 R)
• M6: 2,790,898 km (0.106 R)
• M7: 3,276,343 km (0.102 R)
• M8: 3,930,684 km (0.095 R)
• M9: 4,342,976 km (0.12 R)
• M10: 4,915,636 km (0.068 R)
• M11: 6,571,086 km (0.066 R)
• M12: 7,069,547 km (0.101 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.5 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 880.4

Radius: 11.5

Gravity: 6.66 G

Time & Orbit

Eccentricity (e): 0.09

Orbit Range: 1.37 AU - 1.64 AU

Year: 1205 Days

Day: 12.3 Hours

Environment

Temp: -185 °C

Axial Tilt: 24.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 72,214,832 km

• M1: 146,307 km (0.115 R)
• M2: 843,882 km (0.08 R)
• M3: 1,258,417 km (0.09 R)
• M4: 1,733,540 km (0.098 R)
• M5: 2,234,693 km (0.101 R)
• M6: 2,913,269 km (0.107 R)
• M7: 3,548,162 km (0.03 R)
• M8: 3,907,347 km (0.09 R)
• M9: 5,510,886 km (0.089 R)
• M10: 5,905,077 km (0.111 R)
• M11: 6,531,892 km (0.114 R)
• M12: 6,948,971 km (0.12 R)
• M13: 7,674,820 km (0.028 R)
• M14: 9,338,797 km (0.104 R)
• M15: 9,805,841 km (0.11 R)
• M16: 10,956,249 km (0.11 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.7 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 736.5

Radius: 8.4

Gravity: 10.44 G

Time & Orbit

Eccentricity (e): 0.248

Orbit Range: 1.28 AU - 2.12 AU

Year: 1454 Days

Day: 14.1 Hours

Environment

Temp: -187 °C

Axial Tilt: 32.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 72,214,832 km

• M1: 104,569 km (0.069 R)
• M2: 372,648 km (0.101 R)
• M3: 677,230 km (0.056 R)
• M4: 1,006,195 km (0.097 R)
• M5: 2,167,673 km (0.093 R)
• M6: 3,044,017 km (0.097 R)
• M7: 3,603,514 km (0.115 R)
• M8: 4,666,855 km (0.078 R)
• M9: 5,788,839 km (0.108 R)
• M10: 6,425,079 km (0.104 R)
• M11: 7,864,510 km (0.114 R)
• M12: 8,764,640 km (0.117 R)
• M13: 9,224,055 km (0.093 R)
• M14: 10,058,512 km (0.103 R)
• M15: 11,153,419 km (0.108 R)
• M16: 11,475,204 km (0.081 R)
• M17: 13,417,433 km (0.077 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.78 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 139.5

Radius: 14.3

Gravity: 0.68 G

Time & Orbit

Eccentricity (e): 0.056

Orbit Range: 1.68 AU - 1.88 AU

Year: 1558 Days

Day: 8 Hours

Environment

Temp: -184 °C

Axial Tilt: 23.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 72,214,832 km

• M1: 177,872 km (0.103 R)
• M2: 716,275 km (0.074 R)
• M3: 1,641,537 km (0.072 R)
• M4: 4,646,510 km (0.073 R)
• M5: 5,383,130 km (0.117 R)
• M6: 7,112,631 km (0.084 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.68 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 524.9

Radius: 10.6

Gravity: 4.67 G

Time & Orbit

Eccentricity (e): 0.217

Orbit Range: 2.1 AU - 3.26 AU

Year: 2878 Days

Day: 6.8 Hours

Environment

Temp: -194 °C

Axial Tilt: 29.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 72,214,832 km

• M1: 136,134 km (0.096 R)
• M2: 562,189 km (0.083 R)
• M3: 945,907 km (0.065 R)
• M4: 1,548,787 km (0.083 R)
• M5: 2,298,122 km (0.107 R)
• M6: 2,801,819 km (0.038 R)
• M7: 3,171,924 km (0.036 R)
• M8: 3,520,487 km (0.032 R)
• M9: 4,011,916 km (0.101 R)
• M10: 6,644,988 km (0.11 R)
• M11: 8,970,786 km (0.089 R)
• M12: 14,678,393 km (0.037 R)
• M13: 16,567,067 km (0.084 R)
• M14: 18,500,918 km (0.109 R)

Planet 8 - Gas Giant

Semi-Major Axis: 4.45 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 407.7

Radius: 12.6

Gravity: 2.57 G

Time & Orbit

Eccentricity (e): 0.234

Orbit Range: 3.41 AU - 5.49 AU

Year: 6158 Days

Day: 10.3 Hours

Environment

Temp: -216 °C

Axial Tilt: 1.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 72,214,832 km

• M1: 156,629 km (0.104 R)
• M2: 672,742 km (0.059 R)
• M3: 2,128,179 km (0.098 R)
• M4: 2,680,345 km (0.094 R)
• M5: 3,550,855 km (0.107 R)
• M6: 4,357,038 km (0.11 R)
• M7: 5,476,030 km (0.077 R)
• M8: 7,346,003 km (0.075 R)
• M9: 8,539,944 km (0.119 R)
• M10: 13,050,619 km (0.098 R)
• M11: 13,931,751 km (0.09 R)
• M12: 15,186,727 km (0.048 R)
• M13: 18,046,290 km (0.099 R)
• M14: 23,130,673 km (0.074 R)
• M15: 26,079,995 km (0.111 R)
• M16: 26,731,494 km (0.119 R)
• M17: 27,813,236 km (0.069 R)

Planet 9 - Ice Giant

Semi-Major Axis: 9.27 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 683.3

Radius: 7.6

Gravity: 11.83 G

Time & Orbit

Eccentricity (e): 0.162

Orbit Range: 7.77 AU - 10.77 AU

Year: 18515 Days

Day: 23.9 Hours

Environment

Temp: -232 °C

Axial Tilt: 5.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (36)

Outer Limit: 72,214,832 km

• M1: 94,695 km (0.106 R)
• M2: 373,546 km (0.102 R)
• M3: 688,898 km (0.032 R)
• M4: 927,058 km (0.042 R)
• M5: 1,181,374 km (0.103 R)
• M6: 1,781,711 km (0.058 R)
• M7: 2,022,414 km (0.104 R)
• M8: 3,081,866 km (0.061 R)
• M9: 3,348,449 km (0.112 R)
• M10: 4,274,610 km (0.111 R)
• M11: 4,607,166 km (0.108 R)
• M12: 5,399,735 km (0.108 R)
• M13: 8,631,498 km (0.035 R)
• M14: 9,272,824 km (0.085 R)
• M15: 10,650,321 km (0.067 R)
• M16: 12,159,165 km (0.093 R)
• M17: 15,517,189 km (0.036 R)
• M18: 15,986,178 km (0.103 R)
• M19: 16,870,301 km (0.067 R)
• M20: 18,823,750 km (0.12 R)
• M21: 19,178,148 km (0.113 R)
• M22: 20,176,115 km (0.1 R)
• M23: 21,495,568 km (0.038 R)
• M24: 23,174,057 km (0.081 R)
• M25: 25,365,665 km (0.119 R)
• M26: 25,689,694 km (0.113 R)
• M27: 26,789,538 km (0.083 R)
• M28: 30,156,687 km (0.064 R)
• M29: 34,187,901 km (0.058 R)
• M30: 36,332,087 km (0.092 R)
• M31: 38,564,386 km (0.074 R)
• M32: 40,886,444 km (0.064 R)
• M33: 49,075,133 km (0.045 R)
• M34: 54,981,556 km (0.044 R)
• M35: 64,101,491 km (0.106 R)
• M36: 66,734,413 km (0.049 R)

Kuiper Belt

Range: 30 - 49 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 433 - 17,197 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit