🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.39 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.77 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.31

Radius: 0.63

Gravity: 0.78 G

Time & Orbit

Eccentricity (e): 0.248

Orbit Range: 0.58 AU - 0.96 AU

Year: 248 Days

Day: 41 Hours

Environment

Temp: 171 °C

Axial Tilt: 13.2 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 0.86 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.26

Radius: 1.39

Gravity: 1.17 G

Time & Orbit

Eccentricity (e): 0.039

Orbit Range: 0.83 AU - 0.89 AU

Year: 293 Days

Day: 42 Hours

Environment

Temp: 159 °C

Axial Tilt: 32.6 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (2)

Outer Limit: 61,910,723 km

• M1: 33,360 km (0.099 R)
• M2: 345,870 km (0.026 R)

Planet 3 - Terrestrial

Semi-Major Axis: 1.1 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.04

Radius: 1.75

Gravity: 1.32 G

Time & Orbit

Eccentricity (e): 0.142

Orbit Range: 0.94 AU - 1.26 AU

Year: 424 Days

Day: 35.1 Hours

Environment

Temp: 18 °C

Axial Tilt: 1.2 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Satellites (1)

Outer Limit: 61,910,723 km

• M1: 142,567 km (0.095 R)

Planet 4 - Terrestrial

Semi-Major Axis: 1.39 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.2

Radius: 0.53

Gravity: 0.71 G

Time & Orbit

Eccentricity (e): 0.245

Orbit Range: 1.05 AU - 1.73 AU

Year: 602 Days

Day: 32.9 Hours

Environment

Temp: -36 °C

Axial Tilt: 26 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Terrestrial

Semi-Major Axis: 1.52 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.09

Radius: 1.57

Gravity: 1.25 G

Time & Orbit

Eccentricity (e): 0.199

Orbit Range: 1.22 AU - 1.82 AU

Year: 688 Days

Day: 27.3 Hours

Environment

Temp: -42 °C

Axial Tilt: 12.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 6 - Gas Giant

Semi-Major Axis: 6.66 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 176.1

Radius: 9.5

Gravity: 1.95 G

Time & Orbit

Eccentricity (e): 0.231

Orbit Range: 5.12 AU - 8.2 AU

Year: 6309 Days

Day: 13.3 Hours

Environment

Temp: -159 °C

Axial Tilt: 21.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 61,910,723 km

• M1: 118,182 km (0.119 R)
• M2: 438,172 km (0.115 R)
• M3: 744,698 km (0.032 R)
• M4: 1,158,636 km (0.091 R)
• M5: 1,471,893 km (0.08 R)
• M6: 1,966,614 km (0.117 R)
• M7: 3,419,658 km (0.117 R)
• M8: 3,849,004 km (0.118 R)
• M9: 4,447,096 km (0.025 R)
• M10: 4,792,368 km (0.102 R)
• M11: 7,130,732 km (0.043 R)
• M12: 9,119,037 km (0.118 R)
• M13: 9,526,991 km (0.102 R)
• M14: 10,260,320 km (0.051 R)
• M15: 11,324,260 km (0.103 R)
• M16: 15,161,744 km (0.114 R)
• M17: 15,577,177 km (0.11 R)
• M18: 17,035,607 km (0.1 R)
• M19: 17,999,466 km (0.119 R)
• M20: 21,955,432 km (0.047 R)

Planet 7 - Gas Giant

Semi-Major Axis: 6.69 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 869.3

Radius: 14.3

Gravity: 4.25 G

Time & Orbit

Eccentricity (e): 0.034

Orbit Range: 6.46 AU - 6.92 AU

Year: 6352 Days

Day: 5.9 Hours

Environment

Temp: -154 °C

Axial Tilt: 1.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 61,910,723 km

• M1: 182,360 km (0.11 R)
• M2: 712,086 km (0.056 R)
• M3: 1,500,317 km (0.117 R)
• M4: 2,174,555 km (0.047 R)
• M5: 2,751,254 km (0.066 R)
• M6: 4,242,745 km (0.102 R)
• M7: 5,152,151 km (0.099 R)
• M8: 5,796,319 km (0.097 R)
• M9: 8,841,533 km (0.091 R)
• M10: 9,407,313 km (0.111 R)
• M11: 10,708,515 km (0.094 R)
• M12: 13,102,380 km (0.08 R)
• M13: 14,844,148 km (0.093 R)
• M14: 17,467,945 km (0.1 R)
• M15: 18,083,091 km (0.104 R)
• M16: 18,571,379 km (0.038 R)
• M17: 20,238,049 km (0.066 R)
• M18: 20,993,069 km (0.071 R)
• M19: 27,634,018 km (0.104 R)
• M20: 29,036,199 km (0.089 R)
• M21: 29,706,547 km (0.027 R)
• M22: 32,491,760 km (0.086 R)
• M23: 34,906,419 km (0.104 R)
• M24: 37,101,469 km (0.04 R)
• M25: 38,232,877 km (0.094 R)

Planet 8 - Ice Giant

Semi-Major Axis: 13.87 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 410.5

Radius: 7.3

Gravity: 7.7 G

Time & Orbit

Eccentricity (e): 0.111

Orbit Range: 12.33 AU - 15.41 AU

Year: 18962 Days

Day: 18.9 Hours

Environment

Temp: -198 °C

Axial Tilt: 32.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (32)

Outer Limit: 61,910,723 km

• M1: 90,956 km (0.082 R)
• M2: 358,436 km (0.117 R)
• M3: 731,234 km (0.089 R)
• M4: 1,189,901 km (0.077 R)
• M5: 1,759,869 km (0.067 R)
• M6: 2,116,511 km (0.071 R)
• M7: 2,833,234 km (0.061 R)
• M8: 3,273,201 km (0.067 R)
• M9: 5,429,056 km (0.071 R)
• M10: 7,363,806 km (0.094 R)
• M11: 7,725,982 km (0.051 R)
• M12: 7,958,158 km (0.115 R)
• M13: 10,602,151 km (0.048 R)
• M14: 11,181,693 km (0.1 R)
• M15: 11,782,179 km (0.066 R)
• M16: 12,916,879 km (0.047 R)
• M17: 15,475,152 km (0.037 R)
• M18: 15,770,608 km (0.073 R)
• M19: 16,372,589 km (0.087 R)
• M20: 17,944,713 km (0.097 R)
• M21: 18,188,857 km (0.066 R)
• M22: 18,435,245 km (0.103 R)
• M23: 19,614,824 km (0.116 R)
• M24: 20,223,089 km (0.062 R)
• M25: 22,687,564 km (0.1 R)
• M26: 26,066,831 km (0.118 R)
• M27: 28,203,836 km (0.117 R)
• M28: 29,881,277 km (0.056 R)
• M29: 39,001,661 km (0.063 R)
• M30: 52,427,023 km (0.072 R)
• M31: 53,934,969 km (0.07 R)
• M32: 60,804,653 km (0.108 R)

Kuiper Belt

Range: 30 - 57 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 541 - 20,432 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit