🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.29 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.58 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3

Radius: 1.55

Gravity: 1.25 G

Time & Orbit

Eccentricity (e): 0.209

Orbit Range: 0.46 AU - 0.7 AU

Year: 164 Days

Day: 47 Hours

Environment

Temp: 223 °C

Axial Tilt: 26.5 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 1.34 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.01

Radius: 1.32

Gravity: 1.15 G

Time & Orbit

Eccentricity (e): 0.191

Orbit Range: 1.08 AU - 1.6 AU

Year: 575 Days

Day: 28 Hours

Environment

Temp: -32 °C

Axial Tilt: 10.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Terrestrial

Semi-Major Axis: 1.75 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.97

Radius: 1.74

Gravity: 1.31 G

Time & Orbit

Eccentricity (e): 0.182

Orbit Range: 1.43 AU - 2.07 AU

Year: 859 Days

Day: 45.2 Hours

Environment

Temp: -52 °C

Axial Tilt: 43.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Asteroid Belt

Center: 4.22 AU

Composition

Type: Main (Rocky/Icy Mix)

A dense region of planetesimals and debris.

Boundary

Planet 4 - Gas Giant

Semi-Major Axis: 6.69 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 866.7

Radius: 11.9

Gravity: 6.12 G

Time & Orbit

Eccentricity (e): 0.068

Orbit Range: 6.24 AU - 7.14 AU

Year: 6417 Days

Day: 11.7 Hours

Environment

Temp: -156 °C

Axial Tilt: 7.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 35,629,733 km

• M1: 148,551 km (0.119 R)
• M2: 621,579 km (0.075 R)
• M3: 1,454,839 km (0.115 R)
• M4: 2,796,134 km (0.066 R)
• M5: 3,649,290 km (0.11 R)
• M6: 5,096,351 km (0.026 R)
• M7: 5,488,447 km (0.097 R)
• M8: 5,900,589 km (0.112 R)
• M9: 7,151,825 km (0.041 R)
• M10: 7,528,962 km (0.056 R)
• M11: 9,483,458 km (0.1 R)
• M12: 11,345,652 km (0.035 R)
• M13: 12,715,370 km (0.062 R)
• M14: 13,899,886 km (0.106 R)
• M15: 14,729,406 km (0.039 R)
• M16: 17,282,294 km (0.065 R)
• M17: 19,894,123 km (0.094 R)
• M18: 20,871,297 km (0.106 R)
• M19: 21,566,328 km (0.081 R)
• M20: 24,331,944 km (0.071 R)
• M21: 25,362,225 km (0.067 R)
• M22: 28,158,059 km (0.09 R)
• M23: 28,627,497 km (0.109 R)
• M24: 34,998,721 km (0.093 R)
• M25: 38,225,697 km (0.12 R)

Planet 5 - Gas Giant

Semi-Major Axis: 10.67 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 21.3

Radius: 12.6

Gravity: 0.13 G

Time & Orbit

Eccentricity (e): 0.162

Orbit Range: 8.94 AU - 12.4 AU

Year: 12926 Days

Day: 8.7 Hours

Environment

Temp: -182 °C

Axial Tilt: 0 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 35,629,733 km

• M1: 156,928 km (0.105 R)
• M2: 635,342 km (0.038 R)
• M3: 1,291,329 km (0.089 R)
• M4: 1,904,979 km (0.076 R)
• M5: 2,372,772 km (0.059 R)
• M6: 3,286,815 km (0.048 R)
• M7: 4,568,569 km (0.051 R)
• M8: 7,606,154 km (0.062 R)
• M9: 8,031,610 km (0.113 R)
• M10: 11,121,405 km (0.109 R)
• M11: 11,670,728 km (0.094 R)
• M12: 13,297,456 km (0.115 R)
• M13: 14,834,873 km (0.095 R)

Planet 6 - Ice Giant

Semi-Major Axis: 13.35 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 970.1

Radius: 7.7

Gravity: 16.36 G

Time & Orbit

Eccentricity (e): 0.204

Orbit Range: 10.63 AU - 16.07 AU

Year: 18089 Days

Day: 22.5 Hours

Environment

Temp: -183 °C

Axial Tilt: 0.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (36)

Outer Limit: 35,629,733 km

• M1: 97,089 km (0.082 R)
• M2: 410,646 km (0.105 R)
• M3: 705,952 km (0.091 R)
• M4: 992,881 km (0.12 R)
• M5: 1,598,004 km (0.118 R)
• M6: 2,450,712 km (0.079 R)
• M7: 3,069,748 km (0.046 R)
• M8: 3,577,035 km (0.108 R)
• M9: 3,882,214 km (0.03 R)
• M10: 4,475,519 km (0.112 R)
• M11: 5,127,916 km (0.116 R)
• M12: 6,051,683 km (0.079 R)
• M13: 6,848,740 km (0.073 R)
• M14: 8,069,459 km (0.094 R)
• M15: 8,542,487 km (0.043 R)
• M16: 8,813,259 km (0.06 R)
• M17: 9,601,790 km (0.085 R)
• M18: 10,871,726 km (0.083 R)
• M19: 14,038,264 km (0.098 R)
• M20: 14,955,598 km (0.069 R)
• M21: 15,270,053 km (0.119 R)
• M22: 18,481,770 km (0.094 R)
• M23: 25,415,481 km (0.098 R)
• M24: 30,892,110 km (0.096 R)
• M25: 31,659,846 km (0.083 R)
• M26: 34,584,036 km (0.084 R)
• M27: 39,449,557 km (0.104 R)
• M28: 40,353,128 km (0.083 R)
• M29: 45,078,476 km (0.104 R)
• M30: 58,089,900 km (0.085 R)
• M31: 59,063,035 km (0.072 R)
• M32: 65,549,299 km (0.074 R)
• M33: 66,391,984 km (0.046 R)
• M34: 68,746,804 km (0.111 R)
• M35: 69,835,278 km (0.053 R)
• M36: 71,156,676 km (0.037 R)

Planet 7 - Ice Giant

Semi-Major Axis: 18.17 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 34.1

Radius: 7.5

Gravity: 0.61 G

Time & Orbit

Eccentricity (e): 0.071

Orbit Range: 16.88 AU - 19.46 AU

Year: 28723 Days

Day: 20.8 Hours

Environment

Temp: -205 °C

Axial Tilt: 114.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 35,629,733 km

• M1: 93,349 km (0.103 R)
• M2: 503,546 km (0.072 R)
• M3: 856,747 km (0.091 R)
• M4: 1,313,170 km (0.069 R)
• M5: 1,751,193 km (0.117 R)
• M6: 2,316,822 km (0.034 R)
• M7: 2,801,968 km (0.112 R)
• M8: 3,666,345 km (0.104 R)
• M9: 5,147,812 km (0.074 R)
• M10: 5,626,974 km (0.062 R)
• M11: 7,354,680 km (0.085 R)
• M12: 8,810,866 km (0.105 R)
• M13: 11,119,909 km (0.12 R)
• M14: 18,287,891 km (0.094 R)
• M15: 22,226,653 km (0.096 R)
• M16: 24,725,536 km (0.063 R)
• M17: 28,585,161 km (0.066 R)
• M18: 29,515,211 km (0.112 R)
• M19: 31,337,612 km (0.097 R)
• M20: 32,828,355 km (0.11 R)
• M21: 34,783,599 km (0.075 R)

Kuiper Belt

Range: 30 - 55 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 171 - 18,384 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit