🌌 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: 1.54

Radius: 1.19

Gravity: 1.09 G

Time & Orbit

Eccentricity (e): 0.045

Orbit Range: 0.62 AU - 0.68 AU

Year: 333 Days

Day: 42.6 Hours

Environment

Temp: -140 °C

Axial Tilt: 38.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.68 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 442

Radius: 14.2

Gravity: 2.19 G

Time & Orbit

Eccentricity (e): 0.152

Orbit Range: 0.58 AU - 0.78 AU

Year: 357 Days

Day: 8.4 Hours

Environment

Temp: -134 °C

Axial Tilt: 42.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 42,872,982 km

• M1: 176,675 km (0.056 R)
• M2: 641,476 km (0.089 R)
• M3: 1,415,794 km (0.091 R)
• M4: 1,901,987 km (0.109 R)
• M5: 2,623,348 km (0.116 R)
• M6: 4,208,637 km (0.094 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.01 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 649.2

Radius: 11.5

Gravity: 4.91 G

Time & Orbit

Eccentricity (e): 0.13

Orbit Range: 0.88 AU - 1.14 AU

Year: 645 Days

Day: 7.7 Hours

Environment

Temp: -160 °C

Axial Tilt: 35 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 42,872,982 km

• M1: 143,165 km (0.059 R)
• M2: 633,098 km (0.118 R)
• M3: 1,017,415 km (0.064 R)
• M4: 1,483,562 km (0.094 R)
• M5: 2,055,026 km (0.079 R)
• M6: 3,034,294 km (0.074 R)
• M7: 3,470,521 km (0.105 R)
• M8: 4,240,950 km (0.11 R)
• M9: 5,799,461 km (0.094 R)
• M10: 6,179,290 km (0.077 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.18 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 415.3

Radius: 9.6

Gravity: 4.51 G

Time & Orbit

Eccentricity (e): 0.248

Orbit Range: 1.64 AU - 2.72 AU

Year: 2047 Days

Day: 7.9 Hours

Environment

Temp: -196 °C

Axial Tilt: 3.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 42,872,982 km

• M1: 119,529 km (0.079 R)
• M2: 551,867 km (0.085 R)
• M3: 948,002 km (0.075 R)
• M4: 1,253,481 km (0.079 R)
• M5: 3,003,028 km (0.061 R)
• M6: 4,511,722 km (0.116 R)
• M7: 4,951,989 km (0.067 R)
• M8: 6,155,204 km (0.064 R)
• M9: 6,521,719 km (0.115 R)
• M10: 8,340,081 km (0.055 R)
• M11: 8,881,177 km (0.047 R)
• M12: 11,211,313 km (0.072 R)
• M13: 13,027,132 km (0.083 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.77 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 699

Radius: 13.1

Gravity: 4.07 G

Time & Orbit

Eccentricity (e): 0.165

Orbit Range: 2.31 AU - 3.23 AU

Year: 2931 Days

Day: 13.6 Hours

Environment

Temp: -201 °C

Axial Tilt: 3.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 42,872,982 km

• M1: 162,912 km (0.098 R)
• M2: 673,041 km (0.091 R)
• M3: 1,100,292 km (0.112 R)
• M4: 1,608,626 km (0.072 R)
• M5: 2,413,313 km (0.111 R)
• M6: 4,393,390 km (0.098 R)
• M7: 4,865,671 km (0.078 R)
• M8: 5,497,273 km (0.092 R)
• M9: 7,379,962 km (0.11 R)
• M10: 7,790,160 km (0.114 R)
• M11: 9,697,832 km (0.041 R)
• M12: 10,780,621 km (0.115 R)
• M13: 12,598,385 km (0.09 R)
• M14: 13,278,157 km (0.072 R)
• M15: 16,457,262 km (0.106 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.8 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 521.2

Radius: 10.8

Gravity: 4.47 G

Time & Orbit

Eccentricity (e): 0.22

Orbit Range: 2.18 AU - 3.42 AU

Year: 2979 Days

Day: 7.2 Hours

Environment

Temp: -207 °C

Axial Tilt: 15.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 42,872,982 km

• M1: 134,339 km (0.113 R)
• M2: 486,941 km (0.069 R)
• M3: 869,612 km (0.1 R)
• M4: 1,223,411 km (0.081 R)
• M5: 1,707,959 km (0.119 R)
• M6: 2,291,540 km (0.04 R)
• M7: 2,766,663 km (0.066 R)
• M8: 4,448,143 km (0.09 R)
• M9: 5,606,479 km (0.05 R)
• M10: 6,149,071 km (0.087 R)
• M11: 6,869,085 km (0.072 R)
• M12: 7,957,560 km (0.043 R)
• M13: 8,846,769 km (0.067 R)
• M14: 9,547,187 km (0.116 R)
• M15: 11,298,379 km (0.117 R)
• M16: 13,434,487 km (0.099 R)
• M17: 13,845,881 km (0.097 R)
• M18: 14,359,900 km (0.05 R)
• M19: 17,445,655 km (0.061 R)
• M20: 17,880,685 km (0.069 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.12 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 470.8

Radius: 14.7

Gravity: 2.18 G

Time & Orbit

Eccentricity (e): 0.238

Orbit Range: 3.9 AU - 6.34 AU

Year: 7366 Days

Day: 5.5 Hours

Environment

Temp: -218 °C

Axial Tilt: 37 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 42,872,982 km

• M1: 184,903 km (0.101 R)
• M2: 896,540 km (0.12 R)
• M3: 1,531,733 km (0.105 R)
• M4: 2,313,980 km (0.076 R)
• M5: 3,046,860 km (0.092 R)
• M6: 4,146,703 km (0.086 R)
• M7: 5,467,653 km (0.11 R)
• M8: 8,204,695 km (0.06 R)
• M9: 8,928,599 km (0.119 R)
• M10: 9,434,689 km (0.09 R)
• M11: 10,643,889 km (0.086 R)
• M12: 11,213,557 km (0.086 R)
• M13: 12,414,080 km (0.087 R)
• M14: 13,643,475 km (0.096 R)
• M15: 14,316,367 km (0.054 R)
• M16: 15,307,602 km (0.118 R)
• M17: 18,488,950 km (0.107 R)
• M18: 20,306,565 km (0.115 R)
• M19: 33,684,653 km (0.036 R)

Planet 8 - Ice Giant

Semi-Major Axis: 7.8 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 255.5

Radius: 7.3

Gravity: 4.79 G

Time & Orbit

Eccentricity (e): 0.096

Orbit Range: 7.05 AU - 8.55 AU

Year: 13851 Days

Day: 21.1 Hours

Environment

Temp: -234 °C

Axial Tilt: 44.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 42,872,982 km

• M1: 91,554 km (0.088 R)
• M2: 923,617 km (0.106 R)
• M3: 3,170,727 km (0.096 R)
• M4: 4,041,536 km (0.069 R)
• M5: 4,560,940 km (0.056 R)
• M6: 4,822,138 km (0.099 R)
• M7: 5,124,026 km (0.069 R)
• M8: 6,715,748 km (0.063 R)
• M9: 7,169,927 km (0.066 R)
• M10: 13,424,464 km (0.111 R)
• M11: 15,926,489 km (0.102 R)
• M12: 17,923,770 km (0.079 R)
• M13: 18,649,619 km (0.047 R)
• M14: 22,911,363 km (0.095 R)
• M15: 28,849,949 km (0.093 R)
• M16: 29,745,442 km (0.04 R)
• M17: 32,012,448 km (0.09 R)
• M18: 33,841,133 km (0.068 R)
• M19: 36,080,613 km (0.111 R)
• M20: 36,771,157 km (0.105 R)

Kuiper Belt

Range: 30 - 47 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 540 - 14,097 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit