🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.32 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.64 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3

Radius: 1.55

Gravity: 1.25 G

Time & Orbit

Eccentricity (e): 0.022

Orbit Range: 0.63 AU - 0.65 AU

Year: 336 Days

Day: 28.5 Hours

Environment

Temp: -126 °C

Axial Tilt: 35.5 °

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: 4.52

Radius: 1.83

Gravity: 1.35 G

Time & Orbit

Eccentricity (e): 0.166

Orbit Range: 0.54 AU - 0.76 AU

Year: 344 Days

Day: 44.7 Hours

Environment

Temp: -137 °C

Axial Tilt: 14.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.8 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 812.5

Radius: 11.8

Gravity: 5.84 G

Time & Orbit

Eccentricity (e): 0.229

Orbit Range: 0.62 AU - 0.98 AU

Year: 469 Days

Day: 7.4 Hours

Environment

Temp: -149 °C

Axial Tilt: 1.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 45,562,996 km

• M1: 158,723 km (0.107 R)
• M2: 410,197 km (0.082 R)
• M3: 678,426 km (0.098 R)
• M4: 988,094 km (0.085 R)
• M5: 1,754,185 km (0.078 R)
• M6: 2,092,575 km (0.111 R)
• M7: 2,416,903 km (0.056 R)
• M8: 2,733,452 km (0.025 R)
• M9: 3,229,220 km (0.099 R)
• M10: 3,540,084 km (0.072 R)
• M11: 4,361,526 km (0.1 R)
• M12: 4,637,085 km (0.108 R)
• M13: 4,932,541 km (0.112 R)
• M14: 5,168,756 km (0.104 R)
• M15: 5,434,143 km (0.098 R)
• M16: 5,814,720 km (0.109 R)
• M17: 6,158,496 km (0.029 R)
• M18: 6,602,502 km (0.052 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.83 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 630.4

Radius: 13.4

Gravity: 3.51 G

Time & Orbit

Eccentricity (e): 0.091

Orbit Range: 0.75 AU - 0.91 AU

Year: 496 Days

Day: 12.5 Hours

Environment

Temp: -149 °C

Axial Tilt: 11.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 45,562,996 km

• M1: 166,951 km (0.104 R)
• M2: 479,611 km (0.065 R)
• M3: 821,891 km (0.082 R)
• M4: 1,093,860 km (0.104 R)
• M5: 1,374,655 km (0.084 R)
• M6: 1,748,051 km (0.117 R)
• M7: 2,115,912 km (0.1 R)
• M8: 2,439,343 km (0.077 R)
• M9: 2,835,927 km (0.113 R)
• M10: 3,238,345 km (0.068 R)
• M11: 3,641,212 km (0.115 R)
• M12: 4,059,039 km (0.098 R)
• M13: 4,542,091 km (0.094 R)
• M14: 4,847,569 km (0.117 R)
• M15: 5,218,871 km (0.032 R)
• M16: 5,477,975 km (0.102 R)
• M17: 6,063,800 km (0.094 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.55 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 839.8

Radius: 9

Gravity: 10.37 G

Time & Orbit

Eccentricity (e): 0.193

Orbit Range: 1.25 AU - 1.85 AU

Year: 1266 Days

Day: 8.5 Hours

Environment

Temp: -171 °C

Axial Tilt: 31.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 45,562,996 km

• M1: 155,133 km (0.106 R)
• M2: 650,751 km (0.119 R)
• M3: 1,067,530 km (0.115 R)
• M4: 1,482,964 km (0.099 R)
• M5: 1,682,677 km (0.086 R)
• M6: 2,471,656 km (0.098 R)
• M7: 3,539,186 km (0.112 R)
• M8: 4,560,192 km (0.116 R)
• M9: 4,883,024 km (0.119 R)
• M10: 5,629,667 km (0.095 R)
• M11: 7,001,031 km (0.114 R)
• M12: 7,343,610 km (0.116 R)
• M13: 8,033,406 km (0.088 R)
• M14: 8,796,654 km (0.056 R)
• M15: 9,223,906 km (0.114 R)
• M16: 9,683,620 km (0.113 R)
• M17: 9,973,690 km (0.064 R)
• M18: 11,106,595 km (0.054 R)
• M19: 11,635,124 km (0.083 R)
• M20: 12,451,330 km (0.071 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.63 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 952.8

Radius: 10.6

Gravity: 8.48 G

Time & Orbit

Eccentricity (e): 0.128

Orbit Range: 1.42 AU - 1.84 AU

Year: 1365 Days

Day: 8.3 Hours

Environment

Temp: -181 °C

Axial Tilt: 17.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (28)

Outer Limit: 45,562,996 km

• M1: 135,835 km (0.096 R)
• M2: 399,426 km (0.117 R)
• M3: 1,103,883 km (0.103 R)
• M4: 1,561,951 km (0.107 R)
• M5: 1,883,138 km (0.087 R)
• M6: 2,087,189 km (0.09 R)
• M7: 2,425,729 km (0.081 R)
• M8: 2,682,290 km (0.09 R)
• M9: 3,631,339 km (0.094 R)
• M10: 4,049,914 km (0.113 R)
• M11: 4,306,324 km (0.106 R)
• M12: 4,539,248 km (0.069 R)
• M13: 4,794,761 km (0.105 R)
• M14: 6,015,031 km (0.086 R)
• M15: 6,216,839 km (0.116 R)
• M16: 6,554,332 km (0.066 R)
• M17: 7,869,596 km (0.062 R)
• M18: 8,121,968 km (0.086 R)
• M19: 8,335,294 km (0.106 R)
• M20: 8,551,463 km (0.114 R)
• M21: 9,581,893 km (0.087 R)
• M22: 9,790,582 km (0.048 R)
• M23: 10,095,762 km (0.111 R)
• M24: 10,892,221 km (0.03 R)
• M25: 11,189,322 km (0.083 R)
• M26: 11,975,758 km (0.066 R)
• M27: 12,949,790 km (0.112 R)
• M28: 13,739,966 km (0.063 R)

Planet 7 - Gas Giant

Semi-Major Axis: 1.84 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 456.6

Radius: 8.4

Gravity: 6.47 G

Time & Orbit

Eccentricity (e): 0.226

Orbit Range: 1.42 AU - 2.26 AU

Year: 1637 Days

Day: 14.1 Hours

Environment

Temp: -178 °C

Axial Tilt: 1.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 45,562,996 km

• M1: 106,214 km (0.112 R)
• M2: 317,746 km (0.117 R)
• M3: 525,238 km (0.114 R)
• M4: 695,032 km (0.065 R)
• M5: 881,131 km (0.074 R)
• M6: 1,433,297 km (0.115 R)
• M7: 1,787,395 km (0.048 R)
• M8: 1,965,716 km (0.112 R)
• M9: 2,213,899 km (0.064 R)
• M10: 2,477,640 km (0.084 R)
• M11: 2,699,793 km (0.108 R)
• M12: 2,979,541 km (0.069 R)
• M13: 3,149,484 km (0.108 R)
• M14: 3,503,582 km (0.072 R)
• M15: 3,822,824 km (0.064 R)
• M16: 4,241,848 km (0.089 R)
• M17: 5,322,692 km (0.111 R)
• M18: 5,583,591 km (0.072 R)
• M19: 5,850,773 km (0.095 R)
• M20: 6,281,016 km (0.034 R)
• M21: 6,546,702 km (0.088 R)
• M22: 8,603,673 km (0.058 R)
• M23: 9,618,993 km (0.09 R)
• M24: 11,797,138 km (0.106 R)

Planet 8 - Gas Giant

Semi-Major Axis: 3.26 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 235.3

Radius: 10.6

Gravity: 2.09 G

Time & Orbit

Eccentricity (e): 0.246

Orbit Range: 2.46 AU - 4.06 AU

Year: 3861 Days

Day: 9.8 Hours

Environment

Temp: -214 °C

Axial Tilt: 46.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 45,562,996 km

• M1: 131,945 km (0.108 R)
• M2: 654,491 km (0.055 R)
• M3: 979,268 km (0.109 R)
• M4: 1,201,121 km (0.071 R)
• M5: 2,321,011 km (0.03 R)
• M6: 2,833,084 km (0.065 R)
• M7: 3,219,047 km (0.077 R)
• M8: 3,599,325 km (0.088 R)
• M9: 4,135,184 km (0.116 R)
• M10: 4,356,739 km (0.033 R)
• M11: 4,566,774 km (0.097 R)
• M12: 5,132,553 km (0.085 R)
• M13: 6,116,608 km (0.116 R)
• M14: 7,233,955 km (0.075 R)
• M15: 8,086,962 km (0.109 R)
• M16: 9,164,515 km (0.093 R)
• M17: 9,833,367 km (0.057 R)
• M18: 10,096,959 km (0.03 R)
• M19: 10,499,078 km (0.109 R)
• M20: 11,983,388 km (0.101 R)
• M21: 13,169,250 km (0.107 R)
• M22: 15,644,497 km (0.104 R)

Planet 9 - Ice Giant

Semi-Major Axis: 7.46 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 329.3

Radius: 4.3

Gravity: 17.81 G

Time & Orbit

Eccentricity (e): 0.153

Orbit Range: 6.32 AU - 8.6 AU

Year: 13366 Days

Day: 23.3 Hours

Environment

Temp: -224 °C

Axial Tilt: 32.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 45,562,996 km

• M1: 66,571 km (0.075 R)
• M2: 186,249 km (0.026 R)
• M3: 382,223 km (0.109 R)
• M4: 481,705 km (0.104 R)
• M5: 870,660 km (0.103 R)
• M6: 7,226,176 km (0.076 R)
• M7: 8,081,427 km (0.053 R)
• M8: 13,079,491 km (0.042 R)
• M9: 13,471,887 km (0.102 R)
• M10: 16,546,272 km (0.109 R)
• M11: 18,577,812 km (0.047 R)
• M12: 22,289,484 km (0.12 R)
• M13: 28,312,295 km (0.049 R)
• M14: 30,282,050 km (0.048 R)
• M15: 32,241,483 km (0.119 R)
• M16: 35,939,692 km (0.1 R)
• M17: 38,572,764 km (0.11 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: 305 - 16,226 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit