🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.41 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.82 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.27

Radius: 1.79

Gravity: 1.33 G

Time & Orbit

Eccentricity (e): 0.178

Orbit Range: 0.67 AU - 0.97 AU

Year: 270 Days

Day: 29.7 Hours

Environment

Temp: 130 °C

Axial Tilt: 6 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 1.21 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.75

Radius: 1.25

Gravity: 1.12 G

Time & Orbit

Eccentricity (e): 0.026

Orbit Range: 1.18 AU - 1.24 AU

Year: 484 Days

Day: 41.4 Hours

Environment

Temp: 18 °C

Axial Tilt: 20 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Planet 3 - Terrestrial

Semi-Major Axis: 3.01 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.98

Radius: 1.31

Gravity: 1.15 G

Time & Orbit

Eccentricity (e): 0.099

Orbit Range: 2.71 AU - 3.31 AU

Year: 1898 Days

Day: 32.6 Hours

Environment

Temp: -111 °C

Axial Tilt: 41.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Terrestrial

Semi-Major Axis: 3.14 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.27

Radius: 1.39

Gravity: 1.17 G

Time & Orbit

Eccentricity (e): 0.041

Orbit Range: 3.01 AU - 3.27 AU

Year: 2022 Days

Day: 13.7 Hours

Environment

Temp: -115 °C

Axial Tilt: 34.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Terrestrial

Semi-Major Axis: 3.54 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.46

Radius: 1.82

Gravity: 1.35 G

Time & Orbit

Eccentricity (e): 0.152

Orbit Range: 3 AU - 4.08 AU

Year: 2421 Days

Day: 27.8 Hours

Environment

Temp: -121 °C

Axial Tilt: 32.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Asteroid Belt

Center: 5.49 AU

Composition

Type: Main (Rocky/Icy Mix)

A dense region of planetesimals and debris.

Boundary

Planet 6 - Gas Giant

Semi-Major Axis: 7.44 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 701

Radius: 12

Gravity: 4.87 G

Time & Orbit

Eccentricity (e): 0.171

Orbit Range: 6.17 AU - 8.71 AU

Year: 7375 Days

Day: 8.4 Hours

Environment

Temp: -154 °C

Axial Tilt: 46.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 57,160,413 km

• M1: 149,299 km (0.038 R)
• M2: 777,909 km (0.088 R)
• M3: 1,252,882 km (0.088 R)
• M4: 1,652,608 km (0.071 R)
• M5: 2,797,630 km (0.085 R)
• M6: 3,404,997 km (0.028 R)
• M7: 4,073,400 km (0.112 R)
• M8: 4,770,676 km (0.103 R)
• M9: 6,403,686 km (0.113 R)
• M10: 7,695,165 km (0.095 R)
• M11: 8,175,823 km (0.104 R)
• M12: 10,398,398 km (0.081 R)
• M13: 12,609,904 km (0.075 R)
• M14: 14,933,458 km (0.099 R)
• M15: 16,261,438 km (0.065 R)
• M16: 21,335,798 km (0.104 R)
• M17: 23,100,604 km (0.109 R)
• M18: 24,701,301 km (0.095 R)
• M19: 27,469,759 km (0.109 R)
• M20: 30,241,210 km (0.038 R)
• M21: 30,937,288 km (0.091 R)
• M22: 31,339,707 km (0.059 R)
• M23: 34,362,780 km (0.096 R)

Planet 7 - Gas Giant

Semi-Major Axis: 10.38 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 247

Radius: 8.5

Gravity: 3.42 G

Time & Orbit

Eccentricity (e): 0.081

Orbit Range: 9.54 AU - 11.22 AU

Year: 12154 Days

Day: 10.5 Hours

Environment

Temp: -182 °C

Axial Tilt: 42 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (28)

Outer Limit: 57,160,413 km

• M1: 106,364 km (0.069 R)
• M2: 379,979 km (0.085 R)
• M3: 675,584 km (0.033 R)
• M4: 1,021,753 km (0.117 R)
• M5: 2,100,504 km (0.056 R)
• M6: 3,273,351 km (0.08 R)
• M7: 4,103,170 km (0.086 R)
• M8: 4,805,532 km (0.088 R)
• M9: 5,276,167 km (0.069 R)
• M10: 6,207,414 km (0.03 R)
• M11: 6,730,109 km (0.106 R)
• M12: 7,020,778 km (0.077 R)
• M13: 8,857,989 km (0.095 R)
• M14: 9,566,036 km (0.075 R)
• M15: 10,168,766 km (0.092 R)
• M16: 10,455,395 km (0.098 R)
• M17: 11,917,415 km (0.105 R)
• M18: 12,506,232 km (0.047 R)
• M19: 15,491,907 km (0.094 R)
• M20: 16,650,243 km (0.097 R)
• M21: 17,934,541 km (0.061 R)
• M22: 18,922,186 km (0.082 R)
• M23: 21,005,486 km (0.084 R)
• M24: 24,325,362 km (0.104 R)
• M25: 26,243,506 km (0.081 R)
• M26: 29,210,331 km (0.095 R)
• M27: 31,375,012 km (0.099 R)
• M28: 32,290,700 km (0.099 R)

Planet 8 - Ice Giant

Semi-Major Axis: 15.75 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 225.1

Radius: 5.3

Gravity: 8.01 G

Time & Orbit

Eccentricity (e): 0.204

Orbit Range: 12.54 AU - 18.96 AU

Year: 22717 Days

Day: 17.3 Hours

Environment

Temp: -187 °C

Axial Tilt: 42.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 57,160,413 km

• M1: 66,122 km (0.093 R)
• M2: 295,456 km (0.033 R)
• M3: 4,668,950 km (0.069 R)
• M4: 5,165,315 km (0.103 R)
• M5: 6,865,645 km (0.113 R)
• M6: 7,774,003 km (0.064 R)
• M7: 8,759,853 km (0.114 R)
• M8: 13,541,898 km (0.038 R)
• M9: 14,342,247 km (0.097 R)
• M10: 18,256,924 km (0.075 R)
• M11: 18,740,574 km (0.12 R)
• M12: 22,003,902 km (0.057 R)
• M13: 23,390,076 km (0.03 R)
• M14: 23,674,162 km (0.071 R)
• M15: 27,579,265 km (0.095 R)
• M16: 28,970,675 km (0.108 R)
• M17: 33,186,044 km (0.114 R)
• M18: 34,148,407 km (0.119 R)
• M19: 37,146,647 km (0.091 R)
• M20: 38,314,707 km (0.111 R)
• M21: 46,138,526 km (0.084 R)
• M22: 46,884,870 km (0.116 R)

Kuiper Belt

Range: 30.2 - 57.2 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 366 - 12,080 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit