🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.72 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 1.43 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.35

Radius: 1.41

Gravity: 1.18 G

Time & Orbit

Eccentricity (e): 0.136

Orbit Range: 1.24 AU - 1.62 AU

Year: 607 Days

Day: 32.5 Hours

Environment

Temp: -1 °C

Axial Tilt: 16.2 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Planet 2 - Terrestrial

Semi-Major Axis: 2.51 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.92

Radius: 0.97

Gravity: 0.98 G

Time & Orbit

Eccentricity (e): 0.13

Orbit Range: 2.18 AU - 2.84 AU

Year: 1411 Days

Day: 46.7 Hours

Environment

Temp: -83 °C

Axial Tilt: 2.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Terrestrial

Semi-Major Axis: 2.7 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.34

Radius: 0.65

Gravity: 0.8 G

Time & Orbit

Eccentricity (e): 0.032

Orbit Range: 2.61 AU - 2.79 AU

Year: 1574 Days

Day: 36.1 Hours

Environment

Temp: -83 °C

Axial Tilt: 39.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 79,058,555 km

• M1: 477,367 km (0.12 R)

Planet 4 - Terrestrial

Semi-Major Axis: 3.43 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.09

Radius: 1.34

Gravity: 1.16 G

Time & Orbit

Eccentricity (e): 0.024

Orbit Range: 3.35 AU - 3.51 AU

Year: 2254 Days

Day: 40.1 Hours

Environment

Temp: -101 °C

Axial Tilt: 33.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Terrestrial

Semi-Major Axis: 3.55 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.38

Radius: 1.63

Gravity: 1.27 G

Time & Orbit

Eccentricity (e): 0.168

Orbit Range: 2.95 AU - 4.15 AU

Year: 2373 Days

Day: 41 Hours

Environment

Temp: -107 °C

Axial Tilt: 48.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 6 - Gas Giant

Semi-Major Axis: 8.16 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 93.5

Radius: 10.5

Gravity: 0.85 G

Time & Orbit

Eccentricity (e): 0.134

Orbit Range: 7.07 AU - 9.25 AU

Year: 8269 Days

Day: 13.1 Hours

Environment

Temp: -152 °C

Axial Tilt: 49.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 79,058,555 km

• M1: 130,599 km (0.103 R)
• M2: 1,243,158 km (0.091 R)
• M3: 1,664,127 km (0.072 R)
• M4: 4,413,287 km (0.098 R)
• M5: 4,845,774 km (0.047 R)
• M6: 5,716,883 km (0.112 R)
• M7: 8,163,855 km (0.097 R)
• M8: 9,395,045 km (0.116 R)
• M9: 10,074,519 km (0.099 R)
• M10: 11,658,910 km (0.109 R)
• M11: 12,488,430 km (0.096 R)
• M12: 14,909,223 km (0.099 R)
• M13: 15,418,155 km (0.082 R)
• M14: 21,037,799 km (0.069 R)

Planet 7 - Ice Giant

Semi-Major Axis: 13.14 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 94.6

Radius: 4.6

Gravity: 4.47 G

Time & Orbit

Eccentricity (e): 0.242

Orbit Range: 9.96 AU - 16.32 AU

Year: 16898 Days

Day: 22.8 Hours

Environment

Temp: -174 °C

Axial Tilt: 15 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 79,058,555 km

• M1: 57,296 km (0.069 R)
• M2: 238,908 km (0.11 R)
• M3: 1,228,797 km (0.104 R)
• M4: 1,388,418 km (0.115 R)
• M5: 1,922,632 km (0.1 R)
• M6: 2,187,270 km (0.06 R)
• M7: 2,388,330 km (0.091 R)
• M8: 4,036,001 km (0.103 R)
• M9: 4,991,483 km (0.066 R)
• M10: 5,800,657 km (0.07 R)
• M11: 10,517,478 km (0.09 R)
• M12: 11,485,377 km (0.113 R)
• M13: 12,511,319 km (0.08 R)
• M14: 12,777,005 km (0.081 R)
• M15: 14,048,138 km (0.12 R)
• M16: 16,967,839 km (0.032 R)
• M17: 21,305,579 km (0.072 R)
• M18: 22,222,614 km (0.111 R)
• M19: 27,205,420 km (0.085 R)
• M20: 29,860,483 km (0.062 R)

Planet 8 - Ice Giant

Semi-Major Axis: 13.84 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 921.2

Radius: 7.6

Gravity: 15.95 G

Time & Orbit

Eccentricity (e): 0.179

Orbit Range: 11.36 AU - 16.32 AU

Year: 18266 Days

Day: 18.7 Hours

Environment

Temp: -183 °C

Axial Tilt: 7.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (38)

Outer Limit: 79,058,555 km

• M1: 94,845 km (0.114 R)
• M2: 366,365 km (0.066 R)
• M3: 764,894 km (0.106 R)
• M4: 1,055,263 km (0.103 R)
• M5: 1,298,958 km (0.119 R)
• M6: 1,683,574 km (0.111 R)
• M7: 3,010,358 km (0.119 R)
• M8: 3,253,155 km (0.111 R)
• M9: 3,567,909 km (0.08 R)
• M10: 4,706,947 km (0.084 R)
• M11: 5,148,261 km (0.096 R)
• M12: 6,913,067 km (0.11 R)
• M13: 8,610,853 km (0.088 R)
• M14: 9,671,802 km (0.111 R)
• M15: 10,507,605 km (0.099 R)
• M16: 11,783,974 km (0.1 R)
• M17: 12,322,377 km (0.056 R)
• M18: 13,740,116 km (0.073 R)
• M19: 14,488,404 km (0.089 R)
• M20: 15,342,458 km (0.074 R)
• M21: 15,661,251 km (0.114 R)
• M22: 16,065,914 km (0.118 R)
• M23: 18,283,553 km (0.093 R)
• M24: 19,372,775 km (0.06 R)
• M25: 19,745,423 km (0.062 R)
• M26: 21,980,864 km (0.034 R)
• M27: 22,693,399 km (0.12 R)
• M28: 25,586,322 km (0.075 R)
• M29: 26,832,472 km (0.11 R)
• M30: 30,061,692 km (0.106 R)
• M31: 36,851,042 km (0.105 R)
• M32: 37,136,325 km (0.061 R)
• M33: 53,357,821 km (0.116 R)
• M34: 54,828,816 km (0.066 R)
• M35: 62,388,446 km (0.103 R)
• M36: 65,262,969 km (0.104 R)
• M37: 66,521,685 km (0.088 R)
• M38: 77,880,053 km (0.119 R)

Kuiper Belt

Range: 30.9 - 45.9 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 442 - 17,738 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit