🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.3 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.59 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.46

Radius: 1.43

Gravity: 1.2 G

Time & Orbit

Eccentricity (e): 0.12

Orbit Range: 0.52 AU - 0.66 AU

Year: 174 Days

Day: 34.3 Hours

Environment

Temp: 203 °C

Axial Tilt: 15.1 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 0.64 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.34

Radius: 0.65

Gravity: 0.8 G

Time & Orbit

Eccentricity (e): 0.067

Orbit Range: 0.6 AU - 0.68 AU

Year: 196 Days

Day: 43.9 Hours

Environment

Temp: 111 °C

Axial Tilt: 31.9 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 3 - Terrestrial

Semi-Major Axis: 0.91 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.42

Radius: 1.15

Gravity: 1.07 G

Time & Orbit

Eccentricity (e): 0.228

Orbit Range: 0.7 AU - 1.12 AU

Year: 332 Days

Day: 19.3 Hours

Environment

Temp: 26 °C

Axial Tilt: 35.5 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Satellites (1)

Outer Limit: 81,569,355 km

• M1: 187,596 km (0.041 R)

Planet 4 - Terrestrial

Semi-Major Axis: 0.92 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.3

Radius: 1.61

Gravity: 1.27 G

Time & Orbit

Eccentricity (e): 0.222

Orbit Range: 0.72 AU - 1.12 AU

Year: 338 Days

Day: 22 Hours

Environment

Temp: 6 °C

Axial Tilt: 8 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Planet 5 - Terrestrial

Semi-Major Axis: 1.03 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.17

Radius: 0.49

Gravity: 0.71 G

Time & Orbit

Eccentricity (e): 0.225

Orbit Range: 0.8 AU - 1.26 AU

Year: 400 Days

Day: 41.9 Hours

Environment

Temp: 14 °C

Axial Tilt: 22.8 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Planet 6 - Terrestrial

Semi-Major Axis: 1.64 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.44

Radius: 1.64

Gravity: 1.28 G

Time & Orbit

Eccentricity (e): 0.207

Orbit Range: 1.3 AU - 1.98 AU

Year: 804 Days

Day: 39.9 Hours

Environment

Temp: -69 °C

Axial Tilt: 32 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 7 - Terrestrial

Semi-Major Axis: 3.36 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.39

Radius: 1.63

Gravity: 1.28 G

Time & Orbit

Eccentricity (e): 0.114

Orbit Range: 2.98 AU - 3.74 AU

Year: 2358 Days

Day: 27.6 Hours

Environment

Temp: -122 °C

Axial Tilt: 6.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 81,569,355 km

• M1: 1,444,068 km (0.103 R)

Planet 8 - Terrestrial

Semi-Major Axis: 3.64 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.97

Radius: 1.9

Gravity: 1.38 G

Time & Orbit

Eccentricity (e): 0.099

Orbit Range: 3.28 AU - 4 AU

Year: 2659 Days

Day: 34.2 Hours

Environment

Temp: -121 °C

Axial Tilt: 34.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 9 - Terrestrial

Semi-Major Axis: 3.8 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.96

Radius: 1.54

Gravity: 1.25 G

Time & Orbit

Eccentricity (e): 0.076

Orbit Range: 3.51 AU - 4.09 AU

Year: 2836 Days

Day: 29.6 Hours

Environment

Temp: -133 °C

Axial Tilt: 49.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 81,569,355 km

• M1: 47,572 km (0.09 R)

Asteroid Belt

Center: 8.73 AU

Composition

Type: Far Outer (Icy/Cometary)

A dense region of planetesimals and debris.

Boundary

Planet 10 - Ice Giant

Semi-Major Axis: 13.66 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 903.4

Radius: 8

Gravity: 14.12 G

Time & Orbit

Eccentricity (e): 0.233

Orbit Range: 10.48 AU - 16.84 AU

Year: 19331 Days

Day: 19.9 Hours

Environment

Temp: -203 °C

Axial Tilt: 0.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (29)

Outer Limit: 81,569,355 km

• M1: 101,278 km (0.062 R)
• M2: 363,672 km (0.114 R)
• M3: 1,514,978 km (0.089 R)
• M4: 1,849,927 km (0.07 R)
• M5: 2,321,310 km (0.075 R)
• M6: 2,744,074 km (0.115 R)
• M7: 3,532,903 km (0.079 R)
• M8: 4,327,418 km (0.096 R)
• M9: 4,605,221 km (0.095 R)
• M10: 4,895,142 km (0.112 R)
• M11: 5,235,776 km (0.06 R)
• M12: 5,838,655 km (0.098 R)
• M13: 7,327,154 km (0.103 R)
• M14: 8,343,821 km (0.101 R)
• M15: 10,100,998 km (0.114 R)
• M16: 11,754,204 km (0.114 R)
• M17: 13,287,732 km (0.094 R)
• M18: 15,028,901 km (0.049 R)
• M19: 18,682,680 km (0.063 R)
• M20: 21,256,661 km (0.052 R)
• M21: 26,400,284 km (0.105 R)
• M22: 32,713,165 km (0.107 R)
• M23: 44,855,276 km (0.095 R)
• M24: 53,747,673 km (0.08 R)
• M25: 57,726,976 km (0.049 R)
• M26: 61,088,889 km (0.11 R)
• M27: 62,306,017 km (0.081 R)
• M28: 74,915,771 km (0.043 R)
• M29: 81,081,448 km (0.066 R)

Kuiper Belt

Range: 30 - 48 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 340 - 10,537 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit