🌌 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: 1.61

Radius: 1.21

Gravity: 1.1 G

Time & Orbit

Eccentricity (e): 0.129

Orbit Range: 0.71 AU - 0.93 AU

Year: 263 Days

Day: 33.2 Hours

Environment

Temp: 170 °C

Axial Tilt: 38.8 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 0.85 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.62

Radius: 1.84

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.035

Orbit Range: 0.82 AU - 0.88 AU

Year: 278 Days

Day: 38.7 Hours

Environment

Temp: 169 °C

Axial Tilt: 21 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 3 - Terrestrial

Semi-Major Axis: 1.43 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.73

Radius: 0.88

Gravity: 0.94 G

Time & Orbit

Eccentricity (e): 0.224

Orbit Range: 1.11 AU - 1.75 AU

Year: 607 Days

Day: 15.3 Hours

Environment

Temp: -11 °C

Axial Tilt: 17.8 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Satellites (1)

Outer Limit: 49,422,634 km

• M1: 21,991 km (0.083 R)

Planet 4 - Terrestrial

Semi-Major Axis: 1.82 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.04

Radius: 1.75

Gravity: 1.32 G

Time & Orbit

Eccentricity (e): 0.086

Orbit Range: 1.66 AU - 1.98 AU

Year: 871 Days

Day: 35.2 Hours

Environment

Temp: -49 °C

Axial Tilt: 48.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Terrestrial

Semi-Major Axis: 4.31 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.7

Radius: 1.69

Gravity: 1.3 G

Time & Orbit

Eccentricity (e): 0.064

Orbit Range: 4.03 AU - 4.59 AU

Year: 3174 Days

Day: 44 Hours

Environment

Temp: -113 °C

Axial Tilt: 29.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 49,422,634 km

• M1: 394,789 km (0.061 R)

Planet 6 - Terrestrial

Semi-Major Axis: 4.9 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.05

Radius: 1.33

Gravity: 1.16 G

Time & Orbit

Eccentricity (e): 0.127

Orbit Range: 4.28 AU - 5.52 AU

Year: 3848 Days

Day: 46.3 Hours

Environment

Temp: -128 °C

Axial Tilt: 39.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 49,422,634 km

• M1: 32,612 km (0.104 R)
• M2: 3,059,725 km (0.067 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.56 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 288.7

Radius: 9.4

Gravity: 3.27 G

Time & Orbit

Eccentricity (e): 0.014

Orbit Range: 5.48 AU - 5.64 AU

Year: 4651 Days

Day: 8.8 Hours

Environment

Temp: -133 °C

Axial Tilt: 31.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 49,422,634 km

• M1: 116,986 km (0.076 R)
• M2: 493,972 km (0.119 R)
• M3: 1,060,649 km (0.082 R)
• M4: 1,429,258 km (0.036 R)
• M5: 2,111,424 km (0.102 R)
• M6: 2,641,300 km (0.092 R)
• M7: 3,347,552 km (0.062 R)
• M8: 5,533,326 km (0.116 R)
• M9: 5,847,781 km (0.048 R)
• M10: 7,351,090 km (0.088 R)
• M11: 7,699,503 km (0.085 R)
• M12: 11,562,120 km (0.098 R)
• M13: 12,743,644 km (0.074 R)
• M14: 16,500,047 km (0.03 R)
• M15: 19,518,483 km (0.103 R)
• M16: 20,188,233 km (0.096 R)
• M17: 20,559,834 km (0.057 R)

Planet 8 - Gas Giant

Semi-Major Axis: 7.6 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 215

Radius: 14.6

Gravity: 1.01 G

Time & Orbit

Eccentricity (e): 0.153

Orbit Range: 6.44 AU - 8.76 AU

Year: 7433 Days

Day: 14.6 Hours

Environment

Temp: -164 °C

Axial Tilt: 23.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 49,422,634 km

• M1: 245,490 km (0.101 R)
• M2: 709,991 km (0.105 R)
• M3: 1,708,408 km (0.1 R)
• M4: 2,616,916 km (0.064 R)
• M5: 3,080,968 km (0.116 R)
• M6: 3,828,958 km (0.074 R)
• M7: 5,228,595 km (0.068 R)
• M8: 8,940,717 km (0.063 R)
• M9: 13,825,087 km (0.093 R)
• M10: 21,056,947 km (0.058 R)
• M11: 21,604,326 km (0.095 R)

Planet 9 - Gas Giant

Semi-Major Axis: 9.87 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 620.5

Radius: 11.5

Gravity: 4.69 G

Time & Orbit

Eccentricity (e): 0.079

Orbit Range: 9.09 AU - 10.65 AU

Year: 11001 Days

Day: 12.7 Hours

Environment

Temp: -172 °C

Axial Tilt: 17.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (28)

Outer Limit: 49,422,634 km

• M1: 143,016 km (0.108 R)
• M2: 519,703 km (0.056 R)
• M3: 989,291 km (0.108 R)
• M4: 1,408,165 km (0.035 R)
• M5: 2,679,896 km (0.062 R)
• M6: 3,690,729 km (0.119 R)
• M7: 4,573,955 km (0.063 R)
• M8: 6,565,252 km (0.112 R)
• M9: 6,952,860 km (0.097 R)
• M10: 9,908,017 km (0.096 R)
• M11: 10,419,192 km (0.066 R)
• M12: 11,383,650 km (0.119 R)
• M13: 14,504,710 km (0.075 R)
• M14: 15,569,847 km (0.098 R)
• M15: 15,982,438 km (0.102 R)
• M16: 16,973,524 km (0.06 R)
• M17: 17,410,649 km (0.103 R)
• M18: 22,118,943 km (0.098 R)
• M19: 23,709,168 km (0.12 R)
• M20: 24,255,799 km (0.063 R)
• M21: 25,374,192 km (0.089 R)
• M22: 30,406,814 km (0.087 R)
• M23: 35,000,815 km (0.11 R)
• M24: 38,266,687 km (0.108 R)
• M25: 41,073,891 km (0.03 R)
• M26: 41,995,114 km (0.105 R)
• M27: 47,814,172 km (0.077 R)
• M28: 48,249,352 km (0.096 R)

Kuiper Belt

Range: 30.9 - 49.9 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 439 - 17,720 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit