🌌 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: 0.78 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.82

Radius: 0.92

Gravity: 0.97 G

Time & Orbit

Eccentricity (e): 0.057

Orbit Range: 0.74 AU - 0.82 AU

Year: 243 Days

Day: 17.5 Hours

Environment

Temp: 184 °C

Axial Tilt: 11.9 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (1)

Outer Limit: 44,064,071 km

• M1: 21,392 km (0.106 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.93 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.71

Radius: 1.24

Gravity: 1.11 G

Time & Orbit

Eccentricity (e): 0.086

Orbit Range: 0.85 AU - 1.01 AU

Year: 317 Days

Day: 13.4 Hours

Environment

Temp: 146 °C

Axial Tilt: 13.7 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (1)

Outer Limit: 44,064,071 km

• M1: 211,831 km (0.053 R)

Planet 3 - Terrestrial

Semi-Major Axis: 1.05 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.15

Radius: 1.36

Gravity: 1.16 G

Time & Orbit

Eccentricity (e): 0.089

Orbit Range: 0.96 AU - 1.14 AU

Year: 380 Days

Day: 24.8 Hours

Environment

Temp: 112 °C

Axial Tilt: 13.5 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (2)

Outer Limit: 44,064,071 km

• M1: 363,373 km (0.102 R)
• M2: 459,265 km (0.117 R)

Planet 4 - Terrestrial

Semi-Major Axis: 1.19 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.36

Radius: 0.66

Gravity: 0.83 G

Time & Orbit

Eccentricity (e): 0.001

Orbit Range: 1.19 AU - 1.19 AU

Year: 458 Days

Day: 16.6 Hours

Environment

Temp: 29 °C

Axial Tilt: 38.4 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Planet 5 - Terrestrial

Semi-Major Axis: 3.35 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.4

Radius: 1.81

Gravity: 1.34 G

Time & Orbit

Eccentricity (e): 0.217

Orbit Range: 2.62 AU - 4.08 AU

Year: 2165 Days

Day: 31.7 Hours

Environment

Temp: -107 °C

Axial Tilt: 26.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 6 - Terrestrial

Semi-Major Axis: 4.13 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.17

Radius: 0.49

Gravity: 0.71 G

Time & Orbit

Eccentricity (e): 0.21

Orbit Range: 3.26 AU - 5 AU

Year: 2964 Days

Day: 47.9 Hours

Environment

Temp: -122 °C

Axial Tilt: 28.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 44,064,071 km

• M1: 759,508 km (0.088 R)
• M2: 778,807 km (0.108 R)

Planet 7 - Gas Giant

Semi-Major Axis: 7.52 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 746.5

Radius: 8.4

Gravity: 10.58 G

Time & Orbit

Eccentricity (e): 0.157

Orbit Range: 6.34 AU - 8.7 AU

Year: 7282 Days

Day: 14.7 Hours

Environment

Temp: -154 °C

Axial Tilt: 7.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 44,064,071 km

• M1: 104,419 km (0.091 R)
• M2: 845,527 km (0.115 R)
• M3: 1,384,977 km (0.039 R)
• M4: 1,683,425 km (0.114 R)
• M5: 3,270,359 km (0.114 R)
• M6: 3,684,745 km (0.04 R)
• M7: 5,543,349 km (0.099 R)
• M8: 5,899,392 km (0.095 R)
• M9: 10,108,627 km (0.078 R)
• M10: 14,296,021 km (0.107 R)
• M11: 15,850,792 km (0.074 R)
• M12: 17,173,387 km (0.116 R)
• M13: 18,001,411 km (0.118 R)
• M14: 18,354,163 km (0.1 R)
• M15: 19,292,889 km (0.048 R)
• M16: 24,386,248 km (0.117 R)
• M17: 28,843,367 km (0.108 R)
• M18: 31,415,553 km (0.086 R)
• M19: 35,114,211 km (0.084 R)
• M20: 39,804,253 km (0.104 R)

Planet 8 - Gas Giant

Semi-Major Axis: 11.07 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 148.8

Radius: 13.6

Gravity: 0.8 G

Time & Orbit

Eccentricity (e): 0.113

Orbit Range: 9.82 AU - 12.32 AU

Year: 13005 Days

Day: 13.5 Hours

Environment

Temp: -182 °C

Axial Tilt: 32.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 44,064,071 km

• M1: 169,195 km (0.118 R)
• M2: 1,267,692 km (0.067 R)
• M3: 2,306,650 km (0.083 R)
• M4: 2,754,695 km (0.078 R)
• M5: 3,626,103 km (0.032 R)
• M6: 9,082,536 km (0.056 R)
• M7: 9,681,226 km (0.077 R)
• M8: 13,026,534 km (0.11 R)
• M9: 15,704,336 km (0.097 R)
• M10: 19,142,992 km (0.043 R)
• M11: 19,773,099 km (0.06 R)
• M12: 23,528,753 km (0.118 R)
• M13: 26,253,379 km (0.087 R)

Planet 9 - Ice Giant

Semi-Major Axis: 13.19 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 186

Radius: 3.6

Gravity: 14.35 G

Time & Orbit

Eccentricity (e): 0.006

Orbit Range: 13.11 AU - 13.27 AU

Year: 16915 Days

Day: 17.6 Hours

Environment

Temp: -187 °C

Axial Tilt: 2.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (32)

Outer Limit: 44,064,071 km

• M1: 44,879 km (0.102 R)
• M2: 253,568 km (0.099 R)
• M3: 396,883 km (0.098 R)
• M4: 559,646 km (0.112 R)
• M5: 800,797 km (0.086 R)
• M6: 1,107,323 km (0.09 R)
• M7: 1,528,142 km (0.11 R)
• M8: 1,655,600 km (0.107 R)
• M9: 2,185,326 km (0.093 R)
• M10: 3,306,113 km (0.055 R)
• M11: 3,423,996 km (0.051 R)
• M12: 4,246,186 km (0.104 R)
• M13: 4,556,901 km (0.04 R)
• M14: 4,732,678 km (0.081 R)
• M15: 5,547,239 km (0.119 R)
• M16: 5,781,509 km (0.112 R)
• M17: 6,561,213 km (0.071 R)
• M18: 7,170,525 km (0.113 R)
• M19: 8,239,851 km (0.094 R)
• M20: 9,987,303 km (0.065 R)
• M21: 10,586,593 km (0.103 R)
• M22: 10,843,302 km (0.108 R)
• M23: 15,534,991 km (0.119 R)
• M24: 21,014,611 km (0.106 R)
• M25: 25,032,960 km (0.12 R)
• M26: 25,305,527 km (0.12 R)
• M27: 27,269,448 km (0.109 R)
• M28: 32,998,149 km (0.084 R)
• M29: 33,325,918 km (0.09 R)
• M30: 37,666,799 km (0.066 R)
• M31: 39,234,136 km (0.087 R)
• M32: 41,984,792 km (0.115 R)

Kuiper Belt

Range: 31.1 - 55.1 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 313 - 14,845 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit