🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.4 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.8 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.57

Radius: 1.84

Gravity: 1.35 G

Time & Orbit

Eccentricity (e): 0.176

Orbit Range: 0.66 AU - 0.94 AU

Year: 250 Days

Day: 13.3 Hours

Environment

Temp: 199 °C

Axial Tilt: 36.7 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 1.43 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.53

Radius: 1.83

Gravity: 1.35 G

Time & Orbit

Eccentricity (e): 0.055

Orbit Range: 1.35 AU - 1.51 AU

Year: 598 Days

Day: 25.7 Hours

Environment

Temp: 1 °C

Axial Tilt: 49.5 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Planet 3 - Terrestrial

Semi-Major Axis: 1.52 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.49

Radius: 1.82

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.195

Orbit Range: 1.22 AU - 1.82 AU

Year: 656 Days

Day: 18.6 Hours

Environment

Temp: 3 °C

Axial Tilt: 29 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Planet 4 - Terrestrial

Semi-Major Axis: 3.42 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.79

Radius: 1.87

Gravity: 1.37 G

Time & Orbit

Eccentricity (e): 0.093

Orbit Range: 3.1 AU - 3.74 AU

Year: 2213 Days

Day: 32.1 Hours

Environment

Temp: -96 °C

Axial Tilt: 10.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Terrestrial

Semi-Major Axis: 4.54 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.85

Radius: 1.52

Gravity: 1.23 G

Time & Orbit

Eccentricity (e): 0.125

Orbit Range: 3.97 AU - 5.11 AU

Year: 3384 Days

Day: 45 Hours

Environment

Temp: -126 °C

Axial Tilt: 34.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 87,293,786 km

• M1: 35,455 km (0.069 R)

Planet 6 - Gas Giant

Semi-Major Axis: 6.35 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 561

Radius: 11.9

Gravity: 3.96 G

Time & Orbit

Eccentricity (e): 0.085

Orbit Range: 5.81 AU - 6.89 AU

Year: 5598 Days

Day: 5.3 Hours

Environment

Temp: -146 °C

Axial Tilt: 16.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 87,293,786 km

• M1: 148,102 km (0.05 R)
• M2: 593,754 km (0.107 R)
• M3: 1,016,518 km (0.111 R)
• M4: 1,425,518 km (0.063 R)
• M5: 1,932,356 km (0.102 R)
• M6: 2,783,418 km (0.095 R)
• M7: 3,437,909 km (0.076 R)
• M8: 4,610,008 km (0.089 R)
• M9: 5,673,649 km (0.111 R)
• M10: 7,302,770 km (0.076 R)
• M11: 9,637,544 km (0.1 R)
• M12: 14,699,936 km (0.077 R)
• M13: 15,207,521 km (0.06 R)
• M14: 16,618,379 km (0.074 R)
• M15: 18,895,857 km (0.11 R)
• M16: 21,231,079 km (0.068 R)
• M17: 26,220,019 km (0.108 R)
• M18: 26,716,684 km (0.094 R)
• M19: 28,244,228 km (0.113 R)

Planet 7 - Gas Giant

Semi-Major Axis: 6.72 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 999.1

Radius: 10.7

Gravity: 8.73 G

Time & Orbit

Eccentricity (e): 0.043

Orbit Range: 6.43 AU - 7.01 AU

Year: 6094 Days

Day: 6.6 Hours

Environment

Temp: -151 °C

Axial Tilt: 7.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 87,293,786 km

• M1: 133,142 km (0.085 R)
• M2: 498,909 km (0.1 R)
• M3: 1,034,469 km (0.104 R)
• M4: 1,760,169 km (0.109 R)
• M5: 2,643,993 km (0.05 R)
• M6: 3,143,650 km (0.056 R)
• M7: 4,386,060 km (0.073 R)
• M8: 5,452,094 km (0.103 R)
• M9: 6,790,247 km (0.057 R)
• M10: 7,269,110 km (0.102 R)
• M11: 7,969,228 km (0.053 R)
• M12: 10,056,866 km (0.1 R)
• M13: 10,679,942 km (0.076 R)
• M14: 11,328,598 km (0.056 R)
• M15: 14,547,047 km (0.12 R)
• M16: 16,041,380 km (0.108 R)
• M17: 17,227,392 km (0.064 R)
• M18: 17,704,160 km (0.101 R)
• M19: 19,921,948 km (0.112 R)
• M20: 21,058,892 km (0.093 R)
• M21: 25,776,162 km (0.082 R)
• M22: 28,426,887 km (0.117 R)
• M23: 32,996,054 km (0.065 R)
• M24: 34,371,008 km (0.058 R)
• M25: 35,673,856 km (0.106 R)
• M26: 37,348,305 km (0.093 R)
• M27: 37,917,974 km (0.043 R)

Planet 8 - Ice Giant

Semi-Major Axis: 19.11 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 484.4

Radius: 5.7

Gravity: 14.91 G

Time & Orbit

Eccentricity (e): 0.244

Orbit Range: 14.45 AU - 23.77 AU

Year: 29226 Days

Day: 24.8 Hours

Environment

Temp: -199 °C

Axial Tilt: 1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (34)

Outer Limit: 87,293,786 km

• M1: 70,909 km (0.092 R)
• M2: 285,433 km (0.069 R)
• M3: 588,069 km (0.037 R)
• M4: 1,091,167 km (0.065 R)
• M5: 1,731,147 km (0.108 R)
• M6: 2,287,351 km (0.099 R)
• M7: 3,092,786 km (0.115 R)
• M8: 3,621,465 km (0.071 R)
• M9: 4,856,994 km (0.083 R)
• M10: 5,951,452 km (0.098 R)
• M11: 8,286,974 km (0.081 R)
• M12: 10,649,872 km (0.049 R)
• M13: 14,582,651 km (0.112 R)
• M14: 14,821,409 km (0.119 R)
• M15: 16,223,889 km (0.046 R)
• M16: 16,566,468 km (0.11 R)
• M17: 17,712,837 km (0.085 R)
• M18: 19,290,346 km (0.111 R)
• M19: 23,804,013 km (0.086 R)
• M20: 24,024,520 km (0.068 R)
• M21: 27,375,812 km (0.101 R)
• M22: 29,351,850 km (0.106 R)
• M23: 33,723,998 km (0.045 R)
• M24: 37,163,253 km (0.069 R)
• M25: 42,749,387 km (0.103 R)
• M26: 53,825,912 km (0.112 R)
• M27: 54,205,891 km (0.116 R)
• M28: 57,507,366 km (0.114 R)
• M29: 63,444,607 km (0.091 R)
• M30: 70,003,127 km (0.077 R)
• M31: 73,679,046 km (0.114 R)
• M32: 78,452,115 km (0.04 R)
• M33: 79,430,934 km (0.042 R)
• M34: 80,914,197 km (0.086 R)

Kuiper Belt

Range: 31.4 - 48.4 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 174 - 19,440 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit