🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.31 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.61 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.29

Radius: 1.11

Gravity: 1.05 G

Time & Orbit

Eccentricity (e): 0.132

Orbit Range: 0.53 AU - 0.69 AU

Year: 308 Days

Day: 35.7 Hours

Environment

Temp: -130 °C

Axial Tilt: 1.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 1.07 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 627.4

Radius: 10.5

Gravity: 5.69 G

Time & Orbit

Eccentricity (e): 0.208

Orbit Range: 0.85 AU - 1.29 AU

Year: 715 Days

Day: 10.8 Hours

Environment

Temp: -166 °C

Axial Tilt: 23.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 27,078,697 km

• M1: 130,599 km (0.039 R)
• M2: 507,735 km (0.112 R)
• M3: 1,522,906 km (0.063 R)
• M4: 1,894,208 km (0.113 R)
• M5: 2,953,062 km (0.092 R)
• M6: 3,313,144 km (0.117 R)
• M7: 3,801,282 km (0.105 R)
• M8: 4,152,986 km (0.052 R)
• M9: 4,607,016 km (0.076 R)
• M10: 5,042,196 km (0.115 R)
• M11: 5,395,397 km (0.033 R)
• M12: 6,014,582 km (0.107 R)
• M13: 6,473,549 km (0.095 R)
• M14: 7,530,009 km (0.065 R)

Planet 3 - Gas Giant

Semi-Major Axis: 2.58 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 977.6

Radius: 14.9

Gravity: 4.4 G

Time & Orbit

Eccentricity (e): 0.017

Orbit Range: 2.54 AU - 2.62 AU

Year: 2676 Days

Day: 6.8 Hours

Environment

Temp: -202 °C

Axial Tilt: 28 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 27,078,697 km

• M1: 185,501 km (0.03 R)
• M2: 779,405 km (0.11 R)
• M3: 1,347,877 km (0.086 R)
• M4: 2,027,201 km (0.094 R)
• M5: 2,507,410 km (0.096 R)
• M6: 3,923,204 km (0.098 R)
• M7: 4,843,081 km (0.106 R)
• M8: 5,405,270 km (0.031 R)
• M9: 6,545,505 km (0.093 R)
• M10: 7,204,035 km (0.078 R)
• M11: 8,308,666 km (0.086 R)
• M12: 9,337,600 km (0.077 R)
• M13: 11,018,033 km (0.103 R)
• M14: 12,984,497 km (0.054 R)
• M15: 13,833,315 km (0.054 R)
• M16: 15,073,332 km (0.092 R)
• M17: 16,603,269 km (0.118 R)
• M18: 17,434,136 km (0.118 R)
• M19: 18,350,872 km (0.115 R)
• M20: 18,880,448 km (0.089 R)
• M21: 20,846,912 km (0.114 R)
• M22: 21,748,838 km (0.109 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.84 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 335.6

Radius: 14.2

Gravity: 1.66 G

Time & Orbit

Eccentricity (e): 0.008

Orbit Range: 2.82 AU - 2.86 AU

Year: 3090 Days

Day: 6.8 Hours

Environment

Temp: -199 °C

Axial Tilt: 2.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 27,078,697 km

• M1: 189,541 km (0.099 R)
• M2: 1,028,485 km (0.092 R)
• M3: 1,840,652 km (0.058 R)
• M4: 2,868,539 km (0.101 R)
• M5: 3,375,975 km (0.043 R)
• M6: 4,553,759 km (0.101 R)
• M7: 6,745,218 km (0.115 R)
• M8: 7,740,343 km (0.079 R)
• M9: 12,066,415 km (0.102 R)
• M10: 13,794,719 km (0.118 R)
• M11: 14,512,041 km (0.064 R)
• M12: 14,972,952 km (0.099 R)
• M13: 15,491,308 km (0.088 R)
• M14: 16,514,109 km (0.055 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.16 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 684.7

Radius: 11.8

Gravity: 4.92 G

Time & Orbit

Eccentricity (e): 0.011

Orbit Range: 3.13 AU - 3.19 AU

Year: 3627 Days

Day: 10.1 Hours

Environment

Temp: -208 °C

Axial Tilt: 25 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 27,078,697 km

• M1: 146,756 km (0.102 R)
• M2: 516,262 km (0.112 R)
• M3: 1,073,963 km (0.074 R)
• M4: 1,444,966 km (0.047 R)
• M5: 3,014,547 km (0.107 R)
• M6: 3,794,700 km (0.032 R)
• M7: 6,005,158 km (0.102 R)
• M8: 6,438,543 km (0.083 R)
• M9: 8,036,697 km (0.102 R)
• M10: 8,745,043 km (0.119 R)
• M11: 9,455,932 km (0.089 R)
• M12: 9,924,622 km (0.114 R)
• M13: 10,908,527 km (0.112 R)
• M14: 11,337,275 km (0.082 R)
• M15: 11,866,552 km (0.061 R)
• M16: 13,456,328 km (0.073 R)
• M17: 13,999,818 km (0.079 R)
• M18: 14,404,181 km (0.036 R)
• M19: 18,224,013 km (0.094 R)
• M20: 19,697,402 km (0.11 R)
• M21: 20,657,671 km (0.071 R)
• M22: 23,940,895 km (0.045 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.28 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 326.1

Radius: 13.2

Gravity: 1.87 G

Time & Orbit

Eccentricity (e): 0.112

Orbit Range: 3.8 AU - 4.76 AU

Year: 5717 Days

Day: 12 Hours

Environment

Temp: -211 °C

Axial Tilt: 18.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 27,078,697 km

• M1: 164,109 km (0.084 R)
• M2: 782,546 km (0.074 R)
• M3: 1,493,585 km (0.086 R)
• M4: 2,021,666 km (0.031 R)
• M5: 2,545,557 km (0.112 R)
• M6: 3,014,995 km (0.103 R)
• M7: 4,131,145 km (0.1 R)
• M8: 5,292,773 km (0.035 R)
• M9: 6,358,508 km (0.045 R)
• M10: 6,879,557 km (0.082 R)
• M11: 7,297,235 km (0.111 R)
• M12: 8,042,681 km (0.102 R)
• M13: 10,714,199 km (0.106 R)
• M14: 11,768,416 km (0.106 R)
• M15: 12,556,198 km (0.098 R)
• M16: 16,007,720 km (0.086 R)
• M17: 17,325,677 km (0.066 R)
• M18: 22,406,470 km (0.058 R)
• M19: 24,422,900 km (0.096 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.09 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 703.4

Radius: 13.8

Gravity: 3.69 G

Time & Orbit

Eccentricity (e): 0.083

Orbit Range: 4.67 AU - 5.51 AU

Year: 7415 Days

Day: 10.4 Hours

Environment

Temp: -213 °C

Axial Tilt: 48.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 27,078,697 km

• M1: 172,038 km (0.054 R)
• M2: 758,760 km (0.06 R)
• M3: 1,392,756 km (0.059 R)
• M4: 1,833,920 km (0.113 R)
• M5: 3,887,151 km (0.088 R)
• M6: 4,561,089 km (0.098 R)
• M7: 7,438,006 km (0.08 R)
• M8: 8,649,001 km (0.105 R)
• M9: 10,463,174 km (0.086 R)
• M10: 13,470,241 km (0.094 R)
• M11: 17,214,526 km (0.114 R)
• M12: 18,889,873 km (0.085 R)
• M13: 21,524,291 km (0.119 R)
• M14: 22,320,002 km (0.071 R)
• M15: 25,347,714 km (0.107 R)
• M16: 35,287,595 km (0.058 R)
• M17: 35,837,965 km (0.101 R)
• M18: 38,097,192 km (0.119 R)
• M19: 39,379,395 km (0.039 R)

Planet 8 - Ice Giant

Semi-Major Axis: 8.04 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 57

Radius: 7.6

Gravity: 0.99 G

Time & Orbit

Eccentricity (e): 0.077

Orbit Range: 7.42 AU - 8.66 AU

Year: 14720 Days

Day: 15.5 Hours

Environment

Temp: -220 °C

Axial Tilt: 23.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 27,078,697 km

• M1: 142,268 km (0.107 R)
• M2: 643,570 km (0.096 R)
• M3: 2,950,070 km (0.115 R)
• M4: 4,089,108 km (0.113 R)
• M5: 8,467,389 km (0.072 R)
• M6: 13,653,050 km (0.111 R)
• M7: 17,198,220 km (0.068 R)
• M8: 19,117,561 km (0.117 R)
• M9: 25,336,643 km (0.033 R)

Kuiper Belt

Range: 30 - 51 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 237 - 16,603 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit