🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.33 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.65 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.93

Radius: 1.89

Gravity: 1.38 G

Time & Orbit

Eccentricity (e): 0.151

Orbit Range: 0.55 AU - 0.75 AU

Year: 338 Days

Day: 16.2 Hours

Environment

Temp: -123 °C

Axial Tilt: 38.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 86,598,900 km

• M1: 841,338 km (0.105 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.76 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 670.8

Radius: 12.4

Gravity: 4.36 G

Time & Orbit

Eccentricity (e): 0.002

Orbit Range: 0.76 AU - 0.76 AU

Year: 428 Days

Day: 12 Hours

Environment

Temp: -135 °C

Axial Tilt: 17.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 86,598,900 km

• M1: 154,983 km (0.096 R)
• M2: 547,678 km (0.099 R)
• M3: 1,117,945 km (0.079 R)
• M4: 1,881,941 km (0.047 R)
• M5: 2,386,535 km (0.118 R)
• M6: 2,772,198 km (0.099 R)
• M7: 3,598,427 km (0.112 R)
• M8: 4,043,182 km (0.084 R)
• M9: 4,625,716 km (0.072 R)
• M10: 5,029,181 km (0.099 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.95 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 860.8

Radius: 10.2

Gravity: 8.27 G

Time & Orbit

Eccentricity (e): 0.114

Orbit Range: 0.84 AU - 1.06 AU

Year: 598 Days

Day: 8 Hours

Environment

Temp: -146 °C

Axial Tilt: 29.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 86,598,900 km

• M1: 126,859 km (0.113 R)
• M2: 457,620 km (0.068 R)
• M3: 874,400 km (0.093 R)
• M4: 1,240,017 km (0.117 R)
• M5: 1,774,380 km (0.09 R)
• M6: 2,157,201 km (0.098 R)
• M7: 2,530,747 km (0.091 R)
• M8: 4,339,535 km (0.025 R)
• M9: 4,973,680 km (0.111 R)
• M10: 7,295,290 km (0.08 R)

Planet 4 - Gas Giant

Semi-Major Axis: 3 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 797.9

Radius: 10.8

Gravity: 6.84 G

Time & Orbit

Eccentricity (e): 0.204

Orbit Range: 2.39 AU - 3.61 AU

Year: 3355 Days

Day: 8.9 Hours

Environment

Temp: -199 °C

Axial Tilt: 5.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 86,598,900 km

• M1: 137,181 km (0.089 R)
• M2: 540,647 km (0.087 R)
• M3: 1,505,553 km (0.062 R)
• M4: 2,211,356 km (0.104 R)
• M5: 3,480,843 km (0.118 R)
• M6: 4,229,730 km (0.093 R)
• M7: 5,338,998 km (0.115 R)
• M8: 5,794,823 km (0.111 R)
• M9: 6,247,506 km (0.037 R)
• M10: 8,875,193 km (0.053 R)
• M11: 9,286,587 km (0.108 R)
• M12: 10,806,950 km (0.064 R)
• M13: 12,814,404 km (0.113 R)
• M14: 15,699,249 km (0.062 R)
• M15: 16,081,173 km (0.118 R)
• M16: 18,263,207 km (0.082 R)
• M17: 20,120,166 km (0.112 R)
• M18: 23,066,795 km (0.119 R)
• M19: 23,703,035 km (0.119 R)

Planet 5 - Gas Giant

Semi-Major Axis: 5.57 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 504.9

Radius: 12.7

Gravity: 3.13 G

Time & Orbit

Eccentricity (e): 0.242

Orbit Range: 4.22 AU - 6.92 AU

Year: 8488 Days

Day: 6.4 Hours

Environment

Temp: -227 °C

Axial Tilt: 13.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 86,598,900 km

• M1: 179,218 km (0.037 R)
• M2: 586,573 km (0.081 R)
• M3: 1,472,791 km (0.12 R)
• M4: 1,946,567 km (0.102 R)
• M5: 2,744,971 km (0.032 R)
• M6: 3,188,828 km (0.071 R)
• M7: 7,056,532 km (0.052 R)
• M8: 7,936,915 km (0.096 R)
• M9: 9,824,092 km (0.108 R)
• M10: 13,474,280 km (0.098 R)
• M11: 15,950,275 km (0.039 R)
• M12: 19,001,323 km (0.096 R)
• M13: 23,316,773 km (0.069 R)
• M14: 31,858,063 km (0.098 R)
• M15: 37,780,942 km (0.08 R)

Planet 6 - Ice Giant

Semi-Major Axis: 7.97 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 113.4

Radius: 5.1

Gravity: 4.36 G

Time & Orbit

Eccentricity (e): 0.046

Orbit Range: 7.6 AU - 8.34 AU

Year: 14528 Days

Day: 24.6 Hours

Environment

Temp: -227 °C

Axial Tilt: 13.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 86,598,900 km

• M1: 63,429 km (0.038 R)
• M2: 229,034 km (0.059 R)
• M3: 546,930 km (0.094 R)
• M4: 1,341,594 km (0.099 R)
• M5: 1,927,120 km (0.069 R)
• M6: 2,093,173 km (0.03 R)
• M7: 4,027,923 km (0.112 R)
• M8: 7,054,736 km (0.043 R)
• M9: 8,250,771 km (0.101 R)
• M10: 12,484,242 km (0.117 R)
• M11: 14,972,802 km (0.116 R)
• M12: 17,641,927 km (0.07 R)
• M13: 18,984,867 km (0.048 R)
• M14: 21,421,966 km (0.102 R)
• M15: 25,123,167 km (0.117 R)
• M16: 27,607,389 km (0.101 R)
• M17: 28,772,458 km (0.108 R)
• M18: 31,008,497 km (0.106 R)
• M19: 31,585,047 km (0.054 R)
• M20: 31,876,015 km (0.073 R)
• M21: 32,660,656 km (0.095 R)

Planet 7 - Ice Giant

Semi-Major Axis: 10.04 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 58.5

Radius: 3.6

Gravity: 4.51 G

Time & Orbit

Eccentricity (e): 0.035

Orbit Range: 9.69 AU - 10.39 AU

Year: 20541 Days

Day: 23.7 Hours

Environment

Temp: -223 °C

Axial Tilt: 1.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 86,598,900 km

• M1: 45,627 km (0.046 R)
• M2: 203,453 km (0.07 R)
• M3: 329,714 km (0.083 R)
• M4: 551,867 km (0.086 R)
• M5: 722,707 km (0.114 R)
• M6: 841,638 km (0.113 R)
• M7: 1,620,893 km (0.11 R)
• M8: 2,049,940 km (0.064 R)
• M9: 3,581,373 km (0.12 R)
• M10: 4,003,538 km (0.098 R)
• M11: 4,226,589 km (0.098 R)
• M12: 4,670,595 km (0.104 R)
• M13: 4,834,405 km (0.115 R)
• M14: 5,559,057 km (0.112 R)
• M15: 11,728,772 km (0.119 R)
• M16: 13,625,673 km (0.088 R)
• M17: 14,821,708 km (0.107 R)
• M18: 16,712,476 km (0.109 R)
• M19: 17,947,406 km (0.069 R)
• M20: 18,417,293 km (0.1 R)
• M21: 26,311,273 km (0.111 R)
• M22: 28,974,564 km (0.097 R)

Planet 8 - Ice Giant

Semi-Major Axis: 10.36 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 871.4

Radius: 3.1

Gravity: 90.68 G

Time & Orbit

Eccentricity (e): 0.192

Orbit Range: 8.37 AU - 12.35 AU

Year: 21531 Days

Day: 20.4 Hours

Environment

Temp: -232 °C

Axial Tilt: 0.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (40)

Outer Limit: 86,598,900 km

• M1: 38,596 km (0.079 R)
• M2: 173,683 km (0.092 R)
• M3: 354,697 km (0.087 R)
• M4: 486,791 km (0.104 R)
• M5: 604,525 km (0.118 R)
• M6: 784,342 km (0.117 R)
• M7: 923,019 km (0.04 R)
• M8: 1,457,083 km (0.041 R)
• M9: 1,613,263 km (0.091 R)
• M10: 1,858,454 km (0.058 R)
• M11: 2,718,343 km (0.051 R)
• M12: 2,955,456 km (0.051 R)
• M13: 4,010,121 km (0.089 R)
• M14: 5,620,093 km (0.103 R)
• M15: 6,636,610 km (0.116 R)
• M16: 6,872,825 km (0.106 R)
• M17: 12,139,568 km (0.107 R)
• M18: 13,744,604 km (0.118 R)
• M19: 14,518,773 km (0.072 R)
• M20: 17,279,302 km (0.044 R)
• M21: 20,568,660 km (0.118 R)
• M22: 21,889,460 km (0.09 R)
• M23: 22,097,550 km (0.032 R)
• M24: 23,374,069 km (0.106 R)
• M25: 26,541,804 km (0.101 R)
• M26: 27,136,007 km (0.069 R)
• M27: 27,255,834 km (0.098 R)
• M28: 27,982,731 km (0.037 R)
• M29: 38,186,652 km (0.044 R)
• M30: 42,716,176 km (0.08 R)
• M31: 45,193,666 km (0.092 R)
• M32: 46,040,241 km (0.078 R)
• M33: 50,432,434 km (0.044 R)
• M34: 61,680,100 km (0.083 R)
• M35: 61,887,442 km (0.118 R)
• M36: 69,215,793 km (0.077 R)
• M37: 69,663,988 km (0.065 R)
• M38: 73,552,336 km (0.094 R)
• M39: 78,309,100 km (0.119 R)
• M40: 85,306,989 km (0.118 R)

Kuiper Belt

Range: 30 - 46 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 159 - 13,165 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit