🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.3 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.59 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.48

Radius: 1.17

Gravity: 1.08 G

Time & Orbit

Eccentricity (e): 0.166

Orbit Range: 0.49 AU - 0.69 AU

Year: 297 Days

Day: 23 Hours

Environment

Temp: -124 °C

Axial Tilt: 36.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.66 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.23

Radius: 1.09

Gravity: 1.04 G

Time & Orbit

Eccentricity (e): 0.153

Orbit Range: 0.56 AU - 0.76 AU

Year: 352 Days

Day: 41.4 Hours

Environment

Temp: -140 °C

Axial Tilt: 22.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 1.14 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 44.2

Radius: 10.3

Gravity: 0.42 G

Time & Orbit

Eccentricity (e): 0.166

Orbit Range: 0.95 AU - 1.33 AU

Year: 798 Days

Day: 13.2 Hours

Environment

Temp: -156 °C

Axial Tilt: 17.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (5)

Outer Limit: 56,625,815 km

• M1: 128,056 km (0.086 R)
• M2: 666,309 km (0.104 R)
• M3: 995,723 km (0.049 R)
• M4: 1,327,232 km (0.036 R)
• M5: 3,084,110 km (0.091 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.47 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 574.9

Radius: 14.5

Gravity: 2.73 G

Time & Orbit

Eccentricity (e): 0.044

Orbit Range: 1.41 AU - 1.53 AU

Year: 1169 Days

Day: 8.8 Hours

Environment

Temp: -175 °C

Axial Tilt: 18.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 56,625,815 km

• M1: 180,565 km (0.106 R)
• M2: 688,749 km (0.084 R)
• M3: 2,308,594 km (0.081 R)
• M4: 3,582,271 km (0.118 R)
• M5: 4,082,376 km (0.079 R)
• M6: 5,109,515 km (0.075 R)
• M7: 8,703,455 km (0.045 R)
• M8: 10,003,011 km (0.102 R)
• M9: 10,495,039 km (0.069 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.62 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 758.2

Radius: 14.3

Gravity: 3.71 G

Time & Orbit

Eccentricity (e): 0.073

Orbit Range: 1.5 AU - 1.74 AU

Year: 1353 Days

Day: 6.4 Hours

Environment

Temp: -178 °C

Axial Tilt: 11.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 56,625,815 km

• M1: 191,485 km (0.12 R)
• M2: 653,743 km (0.06 R)
• M3: 2,310,240 km (0.108 R)
• M4: 2,757,986 km (0.085 R)
• M5: 3,279,036 km (0.056 R)
• M6: 4,019,246 km (0.116 R)
• M7: 5,336,904 km (0.069 R)
• M8: 5,879,944 km (0.085 R)
• M9: 6,411,914 km (0.084 R)
• M10: 6,925,783 km (0.081 R)
• M11: 7,680,654 km (0.038 R)
• M12: 9,141,178 km (0.102 R)
• M13: 9,604,183 km (0.094 R)
• M14: 10,147,822 km (0.12 R)
• M15: 10,847,790 km (0.044 R)
• M16: 11,615,527 km (0.068 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.62 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 418.5

Radius: 13.2

Gravity: 2.4 G

Time & Orbit

Eccentricity (e): 0.147

Orbit Range: 3.09 AU - 4.15 AU

Year: 4518 Days

Day: 6.3 Hours

Environment

Temp: -218 °C

Axial Tilt: 36.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 56,625,815 km

• M1: 164,258 km (0.086 R)
• M2: 606,769 km (0.081 R)
• M3: 1,018,911 km (0.07 R)
• M4: 1,585,887 km (0.108 R)
• M5: 2,002,966 km (0.059 R)
• M6: 3,066,457 km (0.097 R)
• M7: 3,806,368 km (0.099 R)
• M8: 4,252,319 km (0.097 R)
• M9: 6,665,932 km (0.108 R)
• M10: 9,454,885 km (0.063 R)
• M11: 14,565,597 km (0.113 R)
• M12: 15,398,258 km (0.112 R)
• M13: 17,101,729 km (0.094 R)
• M14: 17,677,083 km (0.109 R)
• M15: 18,324,991 km (0.096 R)
• M16: 20,750,272 km (0.102 R)
• M17: 22,756,230 km (0.042 R)
• M18: 23,735,348 km (0.063 R)

Planet 7 - Ice Giant

Semi-Major Axis: 6.51 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 951.2

Radius: 4.8

Gravity: 41.28 G

Time & Orbit

Eccentricity (e): 0.245

Orbit Range: 4.92 AU - 8.1 AU

Year: 10896 Days

Day: 20.3 Hours

Environment

Temp: -220 °C

Axial Tilt: 25.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 56,625,815 km

• M1: 59,839 km (0.106 R)
• M2: 532,868 km (0.097 R)
• M3: 766,091 km (0.093 R)
• M4: 1,497,175 km (0.115 R)
• M5: 2,484,970 km (0.119 R)
• M6: 3,734,561 km (0.063 R)
• M7: 5,111,909 km (0.064 R)
• M8: 6,473,100 km (0.088 R)
• M9: 8,433,580 km (0.083 R)
• M10: 8,721,705 km (0.099 R)
• M11: 17,689,350 km (0.055 R)
• M12: 17,924,518 km (0.046 R)
• M13: 19,296,031 km (0.106 R)
• M14: 27,422,786 km (0.086 R)
• M15: 43,820,358 km (0.097 R)
• M16: 47,493,883 km (0.073 R)
• M17: 51,208,548 km (0.099 R)
• M18: 51,526,593 km (0.101 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: 486 - 16,036 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit