🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.3 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.6 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.57

Radius: 1.46

Gravity: 1.21 G

Time & Orbit

Eccentricity (e): 0.177

Orbit Range: 0.49 AU - 0.71 AU

Year: 164 Days

Day: 21.8 Hours

Environment

Temp: 244 °C

Axial Tilt: 0 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 0.87 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.42

Radius: 1.15

Gravity: 1.07 G

Time & Orbit

Eccentricity (e): 0.206

Orbit Range: 0.69 AU - 1.05 AU

Year: 287 Days

Day: 46.1 Hours

Environment

Temp: 168 °C

Axial Tilt: 31.4 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 3 - Terrestrial

Semi-Major Axis: 1.08 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.01

Radius: 1.55

Gravity: 1.25 G

Time & Orbit

Eccentricity (e): 0.184

Orbit Range: 0.88 AU - 1.28 AU

Year: 396 Days

Day: 20.7 Hours

Environment

Temp: 48 °C

Axial Tilt: 22.8 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Planet 4 - Terrestrial

Semi-Major Axis: 1.98 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.71

Radius: 1.24

Gravity: 1.11 G

Time & Orbit

Eccentricity (e): 0.073

Orbit Range: 1.84 AU - 2.12 AU

Year: 984 Days

Day: 30.8 Hours

Environment

Temp: -46 °C

Axial Tilt: 33.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 78,746,463 km

• M1: 57,745 km (0.042 R)

Planet 5 - Terrestrial

Semi-Major Axis: 3.05 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.26

Radius: 1.6

Gravity: 1.27 G

Time & Orbit

Eccentricity (e): 0.002

Orbit Range: 3.04 AU - 3.06 AU

Year: 1881 Days

Day: 24.9 Hours

Environment

Temp: -94 °C

Axial Tilt: 32.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Asteroid Belt

Center: 5.61 AU

Composition

Type: Main (Rocky/Icy Mix)

A dense region of planetesimals and debris.

Boundary

Planet 6 - Gas Giant

Semi-Major Axis: 8.16 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 930.4

Radius: 11.5

Gravity: 7.04 G

Time & Orbit

Eccentricity (e): 0.185

Orbit Range: 6.65 AU - 9.67 AU

Year: 8231 Days

Day: 9.7 Hours

Environment

Temp: -160 °C

Axial Tilt: 10.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (30)

Outer Limit: 78,746,463 km

• M1: 152,141 km (0.088 R)
• M2: 665,411 km (0.088 R)
• M3: 1,207,704 km (0.089 R)
• M4: 1,623,586 km (0.067 R)
• M5: 2,018,524 km (0.025 R)
• M6: 2,673,314 km (0.098 R)
• M7: 3,162,499 km (0.12 R)
• M8: 4,579,041 km (0.077 R)
• M9: 5,061,494 km (0.08 R)
• M10: 8,305,375 km (0.079 R)
• M11: 8,932,938 km (0.084 R)
• M12: 9,640,236 km (0.119 R)
• M13: 12,384,161 km (0.097 R)
• M14: 12,907,005 km (0.097 R)
• M15: 13,627,169 km (0.088 R)
• M16: 14,121,889 km (0.093 R)
• M17: 15,279,029 km (0.116 R)
• M18: 16,153,428 km (0.103 R)
• M19: 20,225,333 km (0.112 R)
• M20: 21,196,821 km (0.037 R)
• M21: 21,861,634 km (0.032 R)
• M22: 24,843,419 km (0.111 R)
• M23: 25,303,582 km (0.118 R)
• M24: 27,299,068 km (0.096 R)
• M25: 28,185,585 km (0.097 R)
• M26: 31,924,634 km (0.057 R)
• M27: 35,631,370 km (0.095 R)
• M28: 38,623,926 km (0.1 R)
• M29: 41,392,534 km (0.106 R)
• M30: 44,967,923 km (0.108 R)

Planet 7 - Gas Giant

Semi-Major Axis: 12.9 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 212.2

Radius: 14.8

Gravity: 0.97 G

Time & Orbit

Eccentricity (e): 0.218

Orbit Range: 10.09 AU - 15.71 AU

Year: 16360 Days

Day: 10.8 Hours

Environment

Temp: -179 °C

Axial Tilt: 34.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 78,746,463 km

• M1: 184,305 km (0.062 R)
• M2: 859,889 km (0.08 R)
• M3: 1,572,423 km (0.1 R)
• M4: 4,577,695 km (0.109 R)
• M5: 5,525,098 km (0.032 R)
• M6: 10,615,764 km (0.047 R)
• M7: 12,614,092 km (0.056 R)
• M8: 13,491,783 km (0.109 R)
• M9: 15,632,379 km (0.093 R)
• M10: 16,099,872 km (0.116 R)
• M11: 17,487,093 km (0.083 R)
• M12: 18,578,859 km (0.106 R)
• M13: 19,792,995 km (0.102 R)
• M14: 21,140,274 km (0.077 R)
• M15: 21,877,941 km (0.113 R)
• M16: 22,547,989 km (0.1 R)
• M17: 27,050,586 km (0.116 R)
• M18: 33,425,101 km (0.088 R)
• M19: 34,090,662 km (0.064 R)
• M20: 36,959,351 km (0.105 R)
• M21: 42,781,999 km (0.109 R)

Planet 8 - Ice Giant

Semi-Major Axis: 14.7 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 36.2

Radius: 7.8

Gravity: 0.6 G

Time & Orbit

Eccentricity (e): 0.046

Orbit Range: 14.02 AU - 15.38 AU

Year: 19901 Days

Day: 19.8 Hours

Environment

Temp: -177 °C

Axial Tilt: 18 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 78,746,463 km

• M1: 97,239 km (0.059 R)
• M2: 394,938 km (0.071 R)
• M3: 839,992 km (0.12 R)
• M4: 1,818,512 km (0.077 R)
• M5: 2,305,154 km (0.082 R)
• M6: 2,930,323 km (0.091 R)
• M7: 4,538,201 km (0.057 R)
• M8: 6,041,211 km (0.109 R)
• M9: 9,577,256 km (0.059 R)
• M10: 12,547,372 km (0.053 R)
• M11: 19,424,984 km (0.08 R)
• M12: 27,700,290 km (0.097 R)
• M13: 27,951,764 km (0.109 R)

Planet 9 - Ice Giant

Semi-Major Axis: 17.97 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 419.8

Radius: 7

Gravity: 8.57 G

Time & Orbit

Eccentricity (e): 0.204

Orbit Range: 14.3 AU - 21.64 AU

Year: 26898 Days

Day: 24.5 Hours

Environment

Temp: -187 °C

Axial Tilt: 8.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 78,746,463 km

• M1: 89,908 km (0.112 R)
• M2: 341,981 km (0.091 R)
• M3: 585,077 km (0.109 R)
• M4: 913,295 km (0.079 R)
• M5: 1,330,972 km (0.109 R)
• M6: 2,522,220 km (0.084 R)
• M7: 3,017,838 km (0.042 R)
• M8: 3,488,622 km (0.095 R)
• M9: 4,898,133 km (0.108 R)
• M10: 6,168,070 km (0.085 R)
• M11: 7,995,857 km (0.108 R)
• M12: 8,677,873 km (0.117 R)
• M13: 8,950,291 km (0.103 R)
• M14: 9,512,330 km (0.101 R)
• M15: 11,083,557 km (0.074 R)
• M16: 11,930,729 km (0.077 R)
• M17: 12,611,250 km (0.036 R)
• M18: 20,901,067 km (0.065 R)
• M19: 25,038,944 km (0.093 R)
• M20: 28,959,904 km (0.083 R)
• M21: 40,360,608 km (0.044 R)
• M22: 42,668,753 km (0.112 R)
• M23: 45,881,218 km (0.059 R)
• M24: 69,679,846 km (0.098 R)
• M25: 75,948,595 km (0.089 R)

Kuiper Belt

Range: 31.1 - 48.1 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 378 - 13,551 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit