🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.26 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.52 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.36

Radius: 0.66

Gravity: 0.83 G

Time & Orbit

Eccentricity (e): 0.044

Orbit Range: 0.5 AU - 0.54 AU

Year: 238 Days

Day: 39.6 Hours

Environment

Temp: -120 °C

Axial Tilt: 180 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.67 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.57

Radius: 1.46

Gravity: 1.21 G

Time & Orbit

Eccentricity (e): 0.033

Orbit Range: 0.65 AU - 0.69 AU

Year: 349 Days

Day: 34.8 Hours

Environment

Temp: -134 °C

Axial Tilt: 38.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 37,667,752 km

• M1: 43,832 km (0.115 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.96 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 314

Radius: 9.3

Gravity: 3.63 G

Time & Orbit

Eccentricity (e): 0.003

Orbit Range: 0.96 AU - 0.96 AU

Year: 598 Days

Day: 14.2 Hours

Environment

Temp: -159 °C

Axial Tilt: 39.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 37,667,752 km

• M1: 115,789 km (0.088 R)
• M2: 429,196 km (0.061 R)
• M3: 850,015 km (0.089 R)
• M4: 1,493,436 km (0.11 R)
• M5: 1,795,773 km (0.091 R)
• M6: 2,574,879 km (0.097 R)
• M7: 3,213,213 km (0.065 R)
• M8: 4,165,104 km (0.104 R)
• M9: 5,231,288 km (0.048 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.46 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 834.6

Radius: 12.2

Gravity: 5.61 G

Time & Orbit

Eccentricity (e): 0.066

Orbit Range: 1.36 AU - 1.56 AU

Year: 1122 Days

Day: 9.9 Hours

Environment

Temp: -185 °C

Axial Tilt: 143.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 37,667,752 km

• M1: 151,692 km (0.079 R)
• M2: 555,307 km (0.078 R)
• M3: 1,041,500 km (0.116 R)
• M4: 1,451,698 km (0.085 R)
• M5: 1,941,780 km (0.045 R)
• M6: 2,351,679 km (0.119 R)
• M7: 3,175,963 km (0.075 R)
• M8: 3,562,224 km (0.048 R)
• M9: 3,979,902 km (0.042 R)
• M10: 4,448,592 km (0.052 R)
• M11: 5,560,403 km (0.077 R)
• M12: 6,922,043 km (0.08 R)
• M13: 8,026,823 km (0.085 R)
• M14: 9,335,356 km (0.115 R)
• M15: 9,946,762 km (0.093 R)
• M16: 10,487,260 km (0.061 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.57 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 449.1

Radius: 11.6

Gravity: 3.34 G

Time & Orbit

Eccentricity (e): 0.225

Orbit Range: 1.22 AU - 1.92 AU

Year: 1251 Days

Day: 7.5 Hours

Environment

Temp: -183 °C

Axial Tilt: 22.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 37,667,752 km

• M1: 144,212 km (0.057 R)
• M2: 516,711 km (0.087 R)
• M3: 1,037,162 km (0.04 R)
• M4: 1,563,447 km (0.091 R)
• M5: 2,591,933 km (0.096 R)
• M6: 3,043,569 km (0.027 R)
• M7: 3,532,754 km (0.12 R)
• M8: 3,898,371 km (0.093 R)
• M9: 5,036,811 km (0.053 R)
• M10: 5,481,864 km (0.099 R)
• M11: 6,144,882 km (0.105 R)
• M12: 6,608,636 km (0.086 R)
• M13: 7,024,518 km (0.1 R)
• M14: 8,193,924 km (0.083 R)
• M15: 9,575,760 km (0.064 R)
• M16: 10,261,217 km (0.096 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.31 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 655.1

Radius: 12.7

Gravity: 4.06 G

Time & Orbit

Eccentricity (e): 0.154

Orbit Range: 1.95 AU - 2.67 AU

Year: 2232 Days

Day: 5.4 Hours

Environment

Temp: -203 °C

Axial Tilt: 34.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 37,667,752 km

• M1: 157,975 km (0.117 R)
• M2: 573,558 km (0.06 R)
• M3: 1,163,871 km (0.092 R)
• M4: 1,565,691 km (0.115 R)
• M5: 2,134,612 km (0.111 R)
• M6: 2,707,123 km (0.093 R)
• M7: 3,448,829 km (0.097 R)
• M8: 3,896,127 km (0.062 R)
• M9: 4,463,851 km (0.115 R)
• M10: 5,131,207 km (0.086 R)
• M11: 5,815,019 km (0.079 R)
• M12: 6,747,462 km (0.11 R)
• M13: 7,988,975 km (0.072 R)
• M14: 9,343,434 km (0.083 R)
• M15: 10,111,470 km (0.1 R)
• M16: 11,226,123 km (0.05 R)
• M17: 11,893,180 km (0.071 R)
• M18: 13,049,273 km (0.041 R)
• M19: 14,009,242 km (0.098 R)
• M20: 14,415,251 km (0.085 R)
• M21: 15,584,657 km (0.051 R)
• M22: 16,564,823 km (0.119 R)
• M23: 17,378,336 km (0.108 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.72 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 782

Radius: 10.6

Gravity: 6.96 G

Time & Orbit

Eccentricity (e): 0.181

Orbit Range: 3.87 AU - 5.57 AU

Year: 6520 Days

Day: 14.8 Hours

Environment

Temp: -214 °C

Axial Tilt: 29.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (28)

Outer Limit: 37,667,752 km

• M1: 131,945 km (0.078 R)
• M2: 600,486 km (0.039 R)
• M3: 1,000,810 km (0.099 R)
• M4: 1,492,987 km (0.112 R)
• M5: 2,498,284 km (0.093 R)
• M6: 3,351,142 km (0.119 R)
• M7: 4,129,200 km (0.092 R)
• M8: 4,966,051 km (0.082 R)
• M9: 5,879,645 km (0.104 R)
• M10: 7,959,056 km (0.073 R)
• M11: 8,526,630 km (0.074 R)
• M12: 12,841,780 km (0.118 R)
• M13: 13,396,789 km (0.066 R)
• M14: 13,794,719 km (0.087 R)
• M15: 15,967,329 km (0.1 R)
• M16: 19,932,570 km (0.072 R)
• M17: 20,903,759 km (0.112 R)
• M18: 21,439,619 km (0.084 R)
• M19: 23,346,692 km (0.101 R)
• M20: 24,679,310 km (0.082 R)
• M21: 25,974,080 km (0.079 R)
• M22: 30,324,087 km (0.119 R)
• M23: 33,134,133 km (0.088 R)
• M24: 34,389,858 km (0.094 R)
• M25: 34,922,277 km (0.069 R)
• M26: 36,003,869 km (0.12 R)
• M27: 36,552,893 km (0.111 R)
• M28: 37,555,199 km (0.096 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: 344 - 12,615 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit