🌌 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: 0.62 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.14

Radius: 0.46

Gravity: 0.66 G

Time & Orbit

Eccentricity (e): 0.18

Orbit Range: 0.51 AU - 0.73 AU

Year: 315 Days

Day: 16.9 Hours

Environment

Temp: -124 °C

Axial Tilt: 76.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 32,843,024 km

• M1: 15,558 km (0.056 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.88 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 533.6

Radius: 8

Gravity: 8.34 G

Time & Orbit

Eccentricity (e): 0.15

Orbit Range: 0.75 AU - 1.01 AU

Year: 533 Days

Day: 10 Hours

Environment

Temp: -161 °C

Axial Tilt: 34.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 32,843,024 km

• M1: 105,766 km (0.093 R)
• M2: 588,219 km (0.073 R)
• M3: 1,311,225 km (0.092 R)
• M4: 1,593,068 km (0.113 R)
• M5: 2,145,233 km (0.043 R)
• M6: 2,883,948 km (0.088 R)
• M7: 3,342,166 km (0.119 R)
• M8: 3,703,894 km (0.109 R)
• M9: 4,777,707 km (0.109 R)
• M10: 5,555,018 km (0.069 R)
• M11: 5,956,090 km (0.106 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.93 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 798.4

Radius: 8.8

Gravity: 10.31 G

Time & Orbit

Eccentricity (e): 0.181

Orbit Range: 0.76 AU - 1.1 AU

Year: 579 Days

Day: 13.2 Hours

Environment

Temp: -164 °C

Axial Tilt: 16.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 32,843,024 km

• M1: 109,506 km (0.085 R)
• M2: 501,901 km (0.111 R)
• M3: 801,097 km (0.076 R)
• M4: 1,198,578 km (0.101 R)
• M5: 1,724,714 km (0.05 R)
• M6: 2,096,913 km (0.073 R)
• M7: 2,575,178 km (0.094 R)
• M8: 2,909,978 km (0.103 R)
• M9: 3,261,234 km (0.056 R)
• M10: 3,708,830 km (0.034 R)
• M11: 4,034,655 km (0.095 R)
• M12: 4,348,661 km (0.097 R)
• M13: 5,128,514 km (0.116 R)
• M14: 6,211,154 km (0.059 R)
• M15: 7,027,360 km (0.099 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.98 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 312.5

Radius: 9.5

Gravity: 3.46 G

Time & Orbit

Eccentricity (e): 0.193

Orbit Range: 1.6 AU - 2.36 AU

Year: 1799 Days

Day: 13.6 Hours

Environment

Temp: -193 °C

Axial Tilt: 28.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 32,843,024 km

• M1: 118,182 km (0.082 R)
• M2: 488,886 km (0.085 R)
• M3: 1,311,375 km (0.069 R)
• M4: 2,484,671 km (0.067 R)
• M5: 3,098,770 km (0.045 R)
• M6: 3,541,430 km (0.118 R)
• M7: 4,284,483 km (0.083 R)
• M8: 6,190,659 km (0.1 R)
• M9: 7,496,499 km (0.05 R)
• M10: 11,107,791 km (0.061 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.83 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 287.3

Radius: 13.4

Gravity: 1.6 G

Time & Orbit

Eccentricity (e): 0.12

Orbit Range: 2.49 AU - 3.17 AU

Year: 3074 Days

Day: 9.8 Hours

Environment

Temp: -196 °C

Axial Tilt: 12.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 32,843,024 km

• M1: 167,101 km (0.118 R)
• M2: 686,804 km (0.115 R)
• M3: 1,111,512 km (0.093 R)
• M4: 2,727,917 km (0.099 R)
• M5: 4,732,977 km (0.065 R)
• M6: 5,343,038 km (0.074 R)
• M7: 5,956,090 km (0.099 R)
• M8: 6,855,173 km (0.081 R)
• M9: 9,052,766 km (0.116 R)
• M10: 10,818,320 km (0.069 R)
• M11: 14,747,807 km (0.067 R)
• M12: 15,437,603 km (0.061 R)

Planet 6 - Ice Giant

Semi-Major Axis: 6.82 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 844.1

Radius: 7

Gravity: 17.23 G

Time & Orbit

Eccentricity (e): 0.093

Orbit Range: 6.19 AU - 7.45 AU

Year: 11500 Days

Day: 18.9 Hours

Environment

Temp: -217 °C

Axial Tilt: 34.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (28)

Outer Limit: 32,843,024 km

• M1: 87,066 km (0.119 R)
• M2: 313,408 km (0.108 R)
• M3: 586,573 km (0.089 R)
• M4: 925,412 km (0.096 R)
• M5: 1,797,568 km (0.119 R)
• M6: 2,543,313 km (0.047 R)
• M7: 3,427,886 km (0.107 R)
• M8: 4,259,650 km (0.109 R)
• M9: 5,117,145 km (0.117 R)
• M10: 5,462,417 km (0.037 R)
• M11: 6,753,596 km (0.082 R)
• M12: 8,567,021 km (0.029 R)
• M13: 10,191,056 km (0.065 R)
• M14: 18,830,931 km (0.087 R)
• M15: 19,737,644 km (0.11 R)
• M16: 22,540,958 km (0.087 R)
• M17: 25,103,869 km (0.079 R)
• M18: 26,608,524 km (0.072 R)
• M19: 28,814,644 km (0.059 R)
• M20: 29,906,858 km (0.091 R)
• M21: 31,367,532 km (0.073 R)
• M22: 34,918,985 km (0.06 R)
• M23: 37,301,631 km (0.097 R)
• M24: 39,924,530 km (0.086 R)
• M25: 40,734,752 km (0.118 R)
• M26: 42,667,856 km (0.057 R)
• M27: 51,966,710 km (0.075 R)
• M28: 53,909,986 km (0.072 R)

Planet 7 - Ice Giant

Semi-Major Axis: 8.04 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 101.7

Radius: 5.4

Gravity: 3.49 G

Time & Orbit

Eccentricity (e): 0.054

Orbit Range: 7.61 AU - 8.47 AU

Year: 14720 Days

Day: 20.9 Hours

Environment

Temp: -235 °C

Axial Tilt: 16.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 32,843,024 km

• M1: 67,169 km (0.072 R)
• M2: 274,662 km (0.115 R)
• M3: 1,781,711 km (0.111 R)
• M4: 2,565,454 km (0.114 R)
• M5: 4,649,203 km (0.106 R)
• M6: 5,002,104 km (0.119 R)
• M7: 6,298,220 km (0.057 R)
• M8: 7,506,672 km (0.116 R)
• M9: 10,372,967 km (0.113 R)
• M10: 11,897,369 km (0.109 R)
• M11: 15,088,740 km (0.116 R)
• M12: 21,874,201 km (0.115 R)
• M13: 22,708,957 km (0.047 R)
• M14: 25,175,526 km (0.113 R)
• M15: 25,423,261 km (0.114 R)
• M16: 28,435,414 km (0.043 R)
• M17: 29,796,156 km (0.031 R)
• M18: 30,166,261 km (0.118 R)
• M19: 32,353,831 km (0.049 R)
• M20: 32,548,906 km (0.118 R)

Kuiper Belt

Range: 30 - 50 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 398 - 14,092 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit