🌌 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: 0.56 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.81

Radius: 1.87

Gravity: 1.38 G

Time & Orbit

Eccentricity (e): 0.203

Orbit Range: 0.45 AU - 0.67 AU

Year: 271 Days

Day: 39.4 Hours

Environment

Temp: -123 °C

Axial Tilt: 34.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.65 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.64

Radius: 1.47

Gravity: 1.22 G

Time & Orbit

Eccentricity (e): 0.25

Orbit Range: 0.49 AU - 0.81 AU

Year: 338 Days

Day: 23.8 Hours

Environment

Temp: -133 °C

Axial Tilt: 33.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 26,031,468 km

• M1: 38,895 km (0.089 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.88 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 582.3

Radius: 9.6

Gravity: 6.32 G

Time & Orbit

Eccentricity (e): 0.198

Orbit Range: 0.71 AU - 1.05 AU

Year: 533 Days

Day: 5.9 Hours

Environment

Temp: -159 °C

Axial Tilt: 8.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 26,031,468 km

• M1: 119,379 km (0.118 R)
• M2: 454,927 km (0.08 R)
• M3: 783,145 km (0.105 R)
• M4: 1,282,054 km (0.118 R)
• M5: 1,652,907 km (0.081 R)
• M6: 2,009,249 km (0.046 R)
• M7: 3,338,875 km (0.084 R)
• M8: 3,846,909 km (0.067 R)
• M9: 4,161,962 km (0.111 R)
• M10: 4,629,157 km (0.108 R)
• M11: 5,114,751 km (0.069 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.09 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 662.2

Radius: 11.9

Gravity: 4.68 G

Time & Orbit

Eccentricity (e): 0.184

Orbit Range: 1.71 AU - 2.47 AU

Year: 1951 Days

Day: 12.3 Hours

Environment

Temp: -189 °C

Axial Tilt: 23.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 26,031,468 km

• M1: 152,291 km (0.104 R)
• M2: 796,609 km (0.046 R)
• M3: 1,403,826 km (0.045 R)
• M4: 1,961,078 km (0.066 R)
• M5: 2,407,479 km (0.109 R)
• M6: 3,508,668 km (0.111 R)
• M7: 4,566,176 km (0.031 R)
• M8: 8,084,119 km (0.079 R)
• M9: 9,016,862 km (0.083 R)
• M10: 9,442,767 km (0.117 R)
• M11: 10,019,916 km (0.114 R)
• M12: 11,245,122 km (0.069 R)
• M13: 11,816,437 km (0.073 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.03 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 368.9

Radius: 8.6

Gravity: 4.99 G

Time & Orbit

Eccentricity (e): 0.189

Orbit Range: 2.46 AU - 3.6 AU

Year: 3405 Days

Day: 8.7 Hours

Environment

Temp: -195 °C

Axial Tilt: 36.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 26,031,468 km

• M1: 108,010 km (0.116 R)
• M2: 385,065 km (0.119 R)
• M3: 744,249 km (0.097 R)
• M4: 1,372,560 km (0.085 R)
• M5: 2,033,035 km (0.1 R)
• M6: 3,151,429 km (0.048 R)
• M7: 3,481,591 km (0.065 R)
• M8: 3,815,793 km (0.111 R)
• M9: 4,548,822 km (0.073 R)
• M10: 5,276,466 km (0.078 R)
• M11: 6,238,680 km (0.119 R)
• M12: 6,705,126 km (0.113 R)
• M13: 8,181,059 km (0.039 R)
• M14: 8,507,033 km (0.098 R)
• M15: 10,045,647 km (0.113 R)
• M16: 10,648,676 km (0.089 R)
• M17: 11,116,468 km (0.101 R)
• M18: 11,436,009 km (0.079 R)
• M19: 13,847,078 km (0.046 R)
• M20: 15,171,318 km (0.1 R)
• M21: 15,763,876 km (0.066 R)
• M22: 17,742,607 km (0.117 R)
• M23: 18,014,875 km (0.09 R)
• M24: 18,847,985 km (0.12 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.53 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 694.2

Radius: 12.5

Gravity: 4.44 G

Time & Orbit

Eccentricity (e): 0.139

Orbit Range: 3.9 AU - 5.16 AU

Year: 6225 Days

Day: 8.5 Hours

Environment

Temp: -209 °C

Axial Tilt: 26.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 26,031,468 km

• M1: 155,881 km (0.082 R)
• M2: 955,930 km (0.115 R)
• M3: 1,516,922 km (0.049 R)
• M4: 2,058,018 km (0.107 R)
• M5: 2,494,245 km (0.105 R)
• M6: 4,550,169 km (0.071 R)
• M7: 5,476,928 km (0.053 R)
• M8: 7,628,743 km (0.032 R)
• M9: 8,087,859 km (0.073 R)
• M10: 8,524,685 km (0.095 R)
• M11: 8,935,630 km (0.11 R)
• M12: 12,091,098 km (0.086 R)
• M13: 18,727,858 km (0.115 R)
• M14: 21,998,367 km (0.087 R)
• M15: 22,931,110 km (0.056 R)
• M16: 23,567,349 km (0.105 R)
• M17: 27,368,482 km (0.091 R)
• M18: 28,174,964 km (0.113 R)
• M19: 29,741,403 km (0.114 R)
• M20: 31,365,288 km (0.095 R)
• M21: 31,755,738 km (0.106 R)
• M22: 32,248,514 km (0.091 R)
• M23: 33,962,008 km (0.099 R)

Planet 7 - Ice Giant

Semi-Major Axis: 6.86 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 433.1

Radius: 8

Gravity: 6.77 G

Time & Orbit

Eccentricity (e): 0.166

Orbit Range: 5.72 AU - 8 AU

Year: 11601 Days

Day: 16.3 Hours

Environment

Temp: -216 °C

Axial Tilt: 15.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 26,031,468 km

• M1: 102,026 km (0.05 R)
• M2: 372,648 km (0.083 R)
• M3: 1,170,903 km (0.099 R)
• M4: 2,547,353 km (0.095 R)
• M5: 8,581,532 km (0.084 R)
• M6: 9,550,478 km (0.08 R)
• M7: 14,038,264 km (0.077 R)
• M8: 14,476,436 km (0.112 R)
• M9: 16,666,100 km (0.111 R)
• M10: 17,949,052 km (0.079 R)
• M11: 20,952,379 km (0.117 R)
• M12: 22,786,448 km (0.03 R)
• M13: 23,830,642 km (0.042 R)
• M14: 25,088,909 km (0.096 R)
• M15: 26,485,555 km (0.081 R)
• M16: 28,031,499 km (0.074 R)
• M17: 30,047,630 km (0.054 R)
• M18: 36,908,936 km (0.093 R)
• M19: 40,072,782 km (0.061 R)
• M20: 44,476,943 km (0.098 R)
• M21: 45,015,346 km (0.069 R)

Planet 8 - Ice Giant

Semi-Major Axis: 7.17 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 71.4

Radius: 5.1

Gravity: 2.75 G

Time & Orbit

Eccentricity (e): 0.044

Orbit Range: 6.85 AU - 7.49 AU

Year: 12396 Days

Day: 22.9 Hours

Environment

Temp: -225 °C

Axial Tilt: 23.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 26,031,468 km

• M1: 63,729 km (0.119 R)
• M2: 250,128 km (0.064 R)
• M3: 436,078 km (0.055 R)
• M4: 627,413 km (0.051 R)
• M5: 922,420 km (0.072 R)
• M6: 1,389,465 km (0.086 R)
• M7: 1,853,218 km (0.113 R)
• M8: 2,042,909 km (0.052 R)
• M9: 3,799,636 km (0.109 R)
• M10: 5,672,452 km (0.084 R)
• M11: 6,403,238 km (0.055 R)
• M12: 7,327,304 km (0.115 R)
• M13: 8,085,316 km (0.085 R)
• M14: 8,483,396 km (0.081 R)
• M15: 8,743,397 km (0.068 R)
• M16: 8,932,339 km (0.111 R)
• M17: 11,239,288 km (0.081 R)
• M18: 17,519,706 km (0.058 R)
• M19: 19,375,318 km (0.096 R)
• M20: 20,482,940 km (0.099 R)
• M21: 20,682,654 km (0.114 R)
• M22: 22,539,313 km (0.082 R)
• M23: 23,763,771 km (0.072 R)

Kuiper Belt

Range: 30 - 59 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 539 - 11,168 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit