🌌 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: 2.8

Radius: 1.51

Gravity: 1.23 G

Time & Orbit

Eccentricity (e): 0.246

Orbit Range: 0.39 AU - 0.65 AU

Year: 246 Days

Day: 46.9 Hours

Environment

Temp: -120 °C

Axial Tilt: 22.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 33,628,360 km

• M1: 35,155 km (0.114 R)
• M2: 78,090 km (0.098 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.69 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 725.2

Radius: 14.3

Gravity: 3.55 G

Time & Orbit

Eccentricity (e): 0.207

Orbit Range: 0.55 AU - 0.83 AU

Year: 376 Days

Day: 10 Hours

Environment

Temp: -147 °C

Axial Tilt: 33.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 33,628,360 km

• M1: 177,872 km (0.047 R)
• M2: 632,799 km (0.114 R)
• M3: 1,155,195 km (0.12 R)
• M4: 1,689,259 km (0.096 R)
• M5: 2,207,915 km (0.082 R)
• M6: 3,007,665 km (0.111 R)
• M7: 3,599,474 km (0.102 R)
• M8: 4,281,940 km (0.118 R)
• M9: 4,755,118 km (0.081 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.73 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 233

Radius: 9

Gravity: 2.88 G

Time & Orbit

Eccentricity (e): 0.244

Orbit Range: 0.55 AU - 0.91 AU

Year: 409 Days

Day: 11.7 Hours

Environment

Temp: -149 °C

Axial Tilt: 8.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 33,628,360 km

• M1: 111,899 km (0.116 R)
• M2: 544,237 km (0.088 R)
• M3: 950,096 km (0.074 R)
• M4: 1,288,935 km (0.117 R)
• M5: 1,813,575 km (0.106 R)
• M6: 2,367,835 km (0.062 R)
• M7: 2,880,058 km (0.098 R)
• M8: 3,391,085 km (0.047 R)
• M9: 3,712,720 km (0.11 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.86 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 454.2

Radius: 9

Gravity: 5.61 G

Time & Orbit

Eccentricity (e): 0.038

Orbit Range: 0.83 AU - 0.89 AU

Year: 523 Days

Day: 9.1 Hours

Environment

Temp: -151 °C

Axial Tilt: 44.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 33,628,360 km

• M1: 112,348 km (0.119 R)
• M2: 454,778 km (0.084 R)
• M3: 738,265 km (0.109 R)
• M4: 2,020,618 km (0.072 R)
• M5: 2,730,161 km (0.079 R)
• M6: 3,015,295 km (0.112 R)
• M7: 4,577,695 km (0.047 R)
• M8: 4,936,281 km (0.116 R)
• M9: 5,394,798 km (0.063 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.37 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 351.4

Radius: 10.9

Gravity: 2.96 G

Time & Orbit

Eccentricity (e): 0.006

Orbit Range: 1.36 AU - 1.38 AU

Year: 1052 Days

Day: 12.7 Hours

Environment

Temp: -165 °C

Axial Tilt: 20.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 33,628,360 km

• M1: 135,536 km (0.101 R)
• M2: 928,255 km (0.111 R)
• M3: 1,285,046 km (0.091 R)
• M4: 2,102,598 km (0.106 R)
• M5: 3,463,191 km (0.111 R)
• M6: 5,487,998 km (0.094 R)
• M7: 7,791,955 km (0.055 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.8 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 616.8

Radius: 8.8

Gravity: 7.96 G

Time & Orbit

Eccentricity (e): 0.162

Orbit Range: 2.35 AU - 3.25 AU

Year: 3074 Days

Day: 12.6 Hours

Environment

Temp: -192 °C

Axial Tilt: 26.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 33,628,360 km

• M1: 153,487 km (0.092 R)
• M2: 734,226 km (0.095 R)
• M3: 1,087,876 km (0.069 R)
• M4: 1,883,736 km (0.079 R)
• M5: 2,428,721 km (0.096 R)
• M6: 3,092,338 km (0.087 R)
• M7: 3,429,980 km (0.101 R)
• M8: 5,059,250 km (0.079 R)
• M9: 5,948,759 km (0.067 R)
• M10: 6,304,503 km (0.118 R)
• M11: 6,732,503 km (0.042 R)
• M12: 7,149,432 km (0.108 R)
• M13: 8,234,016 km (0.104 R)
• M14: 8,886,114 km (0.079 R)
• M15: 9,833,367 km (0.071 R)
• M16: 11,885,102 km (0.058 R)
• M17: 13,919,035 km (0.116 R)
• M18: 15,860,665 km (0.115 R)
• M19: 21,080,584 km (0.109 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.32 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 766.1

Radius: 13

Gravity: 4.53 G

Time & Orbit

Eccentricity (e): 0.195

Orbit Range: 2.67 AU - 3.97 AU

Year: 3968 Days

Day: 6.4 Hours

Environment

Temp: -214 °C

Axial Tilt: 8.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 33,628,360 km

• M1: 161,715 km (0.108 R)
• M2: 699,071 km (0.058 R)
• M3: 1,112,709 km (0.084 R)
• M4: 1,721,572 km (0.098 R)
• M5: 2,344,797 km (0.099 R)
• M6: 2,846,847 km (0.073 R)
• M7: 4,115,288 km (0.086 R)
• M8: 5,618,896 km (0.109 R)
• M9: 7,097,222 km (0.092 R)
• M10: 7,598,076 km (0.092 R)
• M11: 9,243,802 km (0.032 R)
• M12: 10,679,642 km (0.095 R)
• M13: 11,885,252 km (0.097 R)
• M14: 12,593,298 km (0.119 R)
• M15: 13,279,205 km (0.108 R)
• M16: 15,212,607 km (0.08 R)
• M17: 17,148,703 km (0.1 R)
• M18: 18,799,366 km (0.118 R)
• M19: 20,620,720 km (0.056 R)
• M20: 21,367,513 km (0.065 R)
• M21: 24,161,253 km (0.106 R)
• M22: 26,549,284 km (0.104 R)

Planet 8 - Gas Giant

Semi-Major Axis: 5.7 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 296.8

Radius: 12.1

Gravity: 2.03 G

Time & Orbit

Eccentricity (e): 0.023

Orbit Range: 5.57 AU - 5.83 AU

Year: 8927 Days

Day: 11 Hours

Environment

Temp: -223 °C

Axial Tilt: 28.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 33,628,360 km

• M1: 155,432 km (0.028 R)
• M2: 557,850 km (0.083 R)
• M3: 950,246 km (0.099 R)
• M4: 1,409,062 km (0.076 R)
• M5: 2,374,417 km (0.064 R)
• M6: 3,922,755 km (0.065 R)
• M7: 4,591,308 km (0.113 R)
• M8: 6,124,686 km (0.053 R)
• M9: 7,309,651 km (0.1 R)
• M10: 9,472,238 km (0.11 R)
• M11: 12,542,136 km (0.088 R)
• M12: 17,745,000 km (0.108 R)
• M13: 20,063,917 km (0.114 R)
• M14: 20,637,625 km (0.106 R)
• M15: 25,712,583 km (0.088 R)
• M16: 26,304,392 km (0.1 R)
• M17: 32,732,613 km (0.104 R)

Kuiper Belt

Range: 30 - 53 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 215 - 20,081 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit