🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.27 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.53 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.98

Radius: 1.55

Gravity: 1.24 G

Time & Orbit

Eccentricity (e): 0.084

Orbit Range: 0.49 AU - 0.57 AU

Year: 253 Days

Day: 39.1 Hours

Environment

Temp: -125 °C

Axial Tilt: 36.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.92 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 118.2

Radius: 14.8

Gravity: 0.54 G

Time & Orbit

Eccentricity (e): 0.216

Orbit Range: 0.72 AU - 1.12 AU

Year: 579 Days

Day: 14.7 Hours

Environment

Temp: -159 °C

Axial Tilt: 6.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 65,080,276 km

• M1: 184,305 km (0.118 R)
• M2: 660,175 km (0.083 R)
• M3: 1,345,184 km (0.083 R)
• M4: 2,127,132 km (0.046 R)
• M5: 2,869,437 km (0.055 R)
• M6: 3,981,996 km (0.076 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.38 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 819

Radius: 12.6

Gravity: 5.16 G

Time & Orbit

Eccentricity (e): 0.197

Orbit Range: 1.11 AU - 1.65 AU

Year: 1063 Days

Day: 13.8 Hours

Environment

Temp: -177 °C

Axial Tilt: 39.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 65,080,276 km

• M1: 156,779 km (0.103 R)
• M2: 656,286 km (0.077 R)
• M3: 1,162,675 km (0.105 R)
• M4: 1,564,495 km (0.106 R)
• M5: 2,198,939 km (0.061 R)
• M6: 2,688,124 km (0.054 R)
• M7: 3,123,005 km (0.111 R)
• M8: 3,635,976 km (0.106 R)
• M9: 4,520,100 km (0.084 R)
• M10: 4,927,305 km (0.066 R)
• M11: 5,419,781 km (0.077 R)
• M12: 7,000,582 km (0.1 R)
• M13: 7,832,047 km (0.11 R)
• M14: 8,504,938 km (0.081 R)
• M15: 9,481,663 km (0.111 R)
• M16: 10,372,518 km (0.034 R)
• M17: 11,284,915 km (0.044 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.66 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 706.8

Radius: 10.1

Gravity: 6.93 G

Time & Orbit

Eccentricity (e): 0.237

Orbit Range: 2.03 AU - 3.29 AU

Year: 2846 Days

Day: 13.8 Hours

Environment

Temp: -199 °C

Axial Tilt: 26.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 65,080,276 km

• M1: 125,662 km (0.036 R)
• M2: 540,198 km (0.107 R)
• M3: 1,011,132 km (0.109 R)
• M4: 1,488,948 km (0.119 R)
• M5: 2,840,415 km (0.119 R)
• M6: 3,902,709 km (0.066 R)
• M7: 4,296,002 km (0.088 R)
• M8: 6,087,287 km (0.111 R)
• M9: 9,973,092 km (0.085 R)
• M10: 18,845,143 km (0.116 R)
• M11: 20,033,249 km (0.064 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.9 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 124.2

Radius: 13.6

Gravity: 0.67 G

Time & Orbit

Eccentricity (e): 0.033

Orbit Range: 2.8 AU - 3 AU

Year: 3240 Days

Day: 7.3 Hours

Environment

Temp: -210 °C

Axial Tilt: 42.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 65,080,276 km

• M1: 179,218 km (0.09 R)
• M2: 1,728,753 km (0.106 R)
• M3: 2,856,123 km (0.069 R)
• M4: 3,510,613 km (0.086 R)
• M5: 4,035,552 km (0.032 R)
• M6: 5,162,922 km (0.118 R)
• M7: 6,001,867 km (0.033 R)
• M8: 6,929,972 km (0.112 R)
• M9: 7,547,362 km (0.112 R)
• M10: 8,599,933 km (0.109 R)
• M11: 9,653,999 km (0.109 R)
• M12: 10,524,509 km (0.111 R)

Planet 6 - Gas Giant

Semi-Major Axis: 5.32 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 312.7

Radius: 14.4

Gravity: 1.51 G

Time & Orbit

Eccentricity (e): 0.101

Orbit Range: 4.78 AU - 5.86 AU

Year: 8050 Days

Day: 9.5 Hours

Environment

Temp: -211 °C

Axial Tilt: 21.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 65,080,276 km

• M1: 179,069 km (0.072 R)
• M2: 790,326 km (0.052 R)
• M3: 1,289,534 km (0.109 R)
• M4: 1,991,447 km (0.084 R)
• M5: 2,775,190 km (0.098 R)
• M6: 4,054,401 km (0.117 R)
• M7: 4,618,834 km (0.071 R)
• M8: 5,578,953 km (0.079 R)
• M9: 6,248,105 km (0.092 R)
• M10: 9,816,612 km (0.104 R)
• M11: 11,545,664 km (0.079 R)
• M12: 12,281,387 km (0.116 R)
• M13: 12,892,344 km (0.097 R)
• M14: 14,010,439 km (0.09 R)
• M15: 15,019,327 km (0.116 R)
• M16: 15,600,515 km (0.073 R)
• M17: 18,011,733 km (0.081 R)
• M18: 19,545,261 km (0.068 R)
• M19: 20,733,367 km (0.089 R)
• M20: 22,341,993 km (0.089 R)
• M21: 24,908,793 km (0.119 R)
• M22: 27,407,676 km (0.075 R)
• M23: 28,276,690 km (0.062 R)

Planet 7 - Ice Giant

Semi-Major Axis: 7.33 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 62.2

Radius: 6.3

Gravity: 1.57 G

Time & Orbit

Eccentricity (e): 0.099

Orbit Range: 6.6 AU - 8.06 AU

Year: 13019 Days

Day: 19.7 Hours

Environment

Temp: -223 °C

Axial Tilt: 36.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 65,080,276 km

• M1: 181,313 km (0.077 R)
• M2: 582,385 km (0.115 R)
• M3: 790,774 km (0.103 R)
• M4: 1,102,686 km (0.102 R)
• M5: 2,805,558 km (0.118 R)
• M6: 4,338,937 km (0.084 R)
• M7: 5,337,802 km (0.087 R)
• M8: 8,273,361 km (0.072 R)
• M9: 10,710,011 km (0.076 R)
• M10: 11,319,921 km (0.08 R)
• M11: 11,998,647 km (0.095 R)
• M12: 12,371,594 km (0.095 R)
• M13: 13,239,112 km (0.067 R)
• M14: 14,094,962 km (0.092 R)
• M15: 14,880,351 km (0.081 R)
• M16: 18,070,675 km (0.096 R)
• M17: 18,996,985 km (0.087 R)
• M18: 21,212,828 km (0.102 R)
• M19: 22,664,377 km (0.075 R)
• M20: 23,668,029 km (0.095 R)
• M21: 24,328,653 km (0.075 R)

Planet 8 - Ice Giant

Semi-Major Axis: 7.53 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 440.2

Radius: 3.9

Gravity: 28.94 G

Time & Orbit

Eccentricity (e): 0.198

Orbit Range: 6.04 AU - 9.02 AU

Year: 13555 Days

Day: 18.7 Hours

Environment

Temp: -222 °C

Axial Tilt: 42.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (35)

Outer Limit: 65,080,276 km

• M1: 48,470 km (0.077 R)
• M2: 170,242 km (0.115 R)
• M3: 447,298 km (0.114 R)
• M4: 792,869 km (0.089 R)
• M5: 1,442,572 km (0.067 R)
• M6: 1,786,049 km (0.048 R)
• M7: 1,968,409 km (0.077 R)
• M8: 2,717,595 km (0.09 R)
• M9: 3,263,627 km (0.119 R)
• M10: 4,448,741 km (0.099 R)
• M11: 4,784,738 km (0.041 R)
• M12: 4,975,027 km (0.098 R)
• M13: 7,165,289 km (0.097 R)
• M14: 7,414,519 km (0.075 R)
• M15: 8,332,452 km (0.112 R)
• M16: 9,032,719 km (0.032 R)
• M17: 9,323,538 km (0.112 R)
• M18: 11,145,939 km (0.07 R)
• M19: 14,271,637 km (0.075 R)
• M20: 14,799,269 km (0.112 R)
• M21: 14,933,159 km (0.079 R)
• M22: 15,271,399 km (0.027 R)
• M23: 15,683,990 km (0.063 R)
• M24: 17,708,498 km (0.117 R)
• M25: 18,940,138 km (0.08 R)
• M26: 23,426,727 km (0.112 R)
• M27: 23,883,300 km (0.106 R)
• M28: 24,814,248 km (0.083 R)
• M29: 25,003,190 km (0.064 R)
• M30: 29,727,490 km (0.12 R)
• M31: 36,091,982 km (0.079 R)
• M32: 38,568,276 km (0.067 R)
• M33: 40,367,639 km (0.116 R)
• M34: 46,528,977 km (0.106 R)
• M35: 48,124,887 km (0.066 R)

Planet 9 - Ice Giant

Semi-Major Axis: 8.69 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 607.1

Radius: 7.7

Gravity: 10.24 G

Time & Orbit

Eccentricity (e): 0.173

Orbit Range: 7.19 AU - 10.19 AU

Year: 16805 Days

Day: 23.5 Hours

Environment

Temp: -227 °C

Axial Tilt: 25.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 65,080,276 km

• M1: 95,892 km (0.099 R)
• M2: 1,123,330 km (0.107 R)
• M3: 1,747,154 km (0.11 R)
• M4: 5,014,221 km (0.116 R)
• M5: 5,407,963 km (0.089 R)
• M6: 10,615,315 km (0.09 R)
• M7: 14,414,952 km (0.11 R)
• M8: 16,971,878 km (0.096 R)
• M9: 20,259,740 km (0.082 R)
• M10: 26,110,064 km (0.103 R)
• M11: 30,228,045 km (0.032 R)
• M12: 32,994,858 km (0.069 R)
• M13: 34,631,159 km (0.115 R)
• M14: 37,522,288 km (0.108 R)
• M15: 40,855,478 km (0.057 R)
• M16: 44,531,995 km (0.116 R)
• M17: 51,361,287 km (0.047 R)
• M18: 55,285,688 km (0.114 R)
• M19: 59,589,021 km (0.027 R)
• M20: 63,725,103 km (0.032 R)

Kuiper Belt

Range: 30 - 53 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 512 - 14,629 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit