🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.36 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.71 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.23

Radius: 1.09

Gravity: 1.04 G

Time & Orbit

Eccentricity (e): 0.021

Orbit Range: 0.7 AU - 0.72 AU

Year: 222 Days

Day: 37.6 Hours

Environment

Temp: 147 °C

Axial Tilt: 37 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 0.82 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.65

Radius: 0.84

Gravity: 0.92 G

Time & Orbit

Eccentricity (e): 0.026

Orbit Range: 0.8 AU - 0.84 AU

Year: 275 Days

Day: 36.3 Hours

Environment

Temp: 169 °C

Axial Tilt: 44.6 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 3 - Terrestrial

Semi-Major Axis: 1.09 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.65

Radius: 0.84

Gravity: 0.92 G

Time & Orbit

Eccentricity (e): 0.218

Orbit Range: 0.85 AU - 1.33 AU

Year: 422 Days

Day: 35 Hours

Environment

Temp: -3 °C

Axial Tilt: 49.5 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Planet 4 - Terrestrial

Semi-Major Axis: 1.13 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.91

Radius: 0.96

Gravity: 0.99 G

Time & Orbit

Eccentricity (e): 0.19

Orbit Range: 0.92 AU - 1.34 AU

Year: 445 Days

Day: 42 Hours

Environment

Temp: 7 °C

Axial Tilt: 9 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Planet 5 - Terrestrial

Semi-Major Axis: 1.28 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.52

Radius: 1.18

Gravity: 1.09 G

Time & Orbit

Eccentricity (e): 0.159

Orbit Range: 1.08 AU - 1.48 AU

Year: 537 Days

Day: 17.2 Hours

Environment

Temp: -7 °C

Axial Tilt: 23.3 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Planet 6 - Terrestrial

Semi-Major Axis: 1.56 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.95

Radius: 1.73

Gravity: 1.32 G

Time & Orbit

Eccentricity (e): 0.22

Orbit Range: 1.22 AU - 1.9 AU

Year: 723 Days

Day: 33.1 Hours

Environment

Temp: -41 °C

Axial Tilt: 15.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Asteroid Belt

Center: 10.04 AU

Composition

Type: Far Outer (Icy/Cometary)

A dense region of planetesimals and debris.

Boundary

Planet 7 - Ice Giant

Semi-Major Axis: 18.51 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 369

Radius: 5.7

Gravity: 11.36 G

Time & Orbit

Eccentricity (e): 0.039

Orbit Range: 17.79 AU - 19.23 AU

Year: 29533 Days

Day: 23.4 Hours

Environment

Temp: -198 °C

Axial Tilt: 38.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (35)

Outer Limit: 80,282,593 km

• M1: 71,059 km (0.071 R)
• M2: 437,873 km (0.03 R)
• M3: 656,585 km (0.092 R)
• M4: 1,021,604 km (0.107 R)
• M5: 1,221,766 km (0.109 R)
• M6: 1,739,075 km (0.112 R)
• M7: 1,947,315 km (0.092 R)
• M8: 2,414,510 km (0.098 R)
• M9: 3,086,503 km (0.042 R)
• M10: 4,100,926 km (0.103 R)
• M11: 4,403,114 km (0.069 R)
• M12: 4,976,822 km (0.097 R)
• M13: 5,845,387 km (0.049 R)
• M14: 7,380,112 km (0.094 R)
• M15: 8,032,059 km (0.098 R)
• M16: 11,414,467 km (0.058 R)
• M17: 11,677,759 km (0.077 R)
• M18: 12,771,619 km (0.078 R)
• M19: 13,489,090 km (0.105 R)
• M20: 14,308,737 km (0.063 R)
• M21: 16,544,627 km (0.052 R)
• M22: 17,396,587 km (0.069 R)
• M23: 23,553,287 km (0.103 R)
• M24: 24,087,800 km (0.1 R)
• M25: 29,761,000 km (0.063 R)
• M26: 32,971,520 km (0.073 R)
• M27: 35,281,910 km (0.074 R)
• M28: 36,263,870 km (0.056 R)
• M29: 37,263,782 km (0.11 R)
• M30: 39,318,808 km (0.103 R)
• M31: 41,758,450 km (0.038 R)
• M32: 42,070,212 km (0.087 R)
• M33: 46,768,782 km (0.07 R)
• M34: 57,962,443 km (0.107 R)
• M35: 78,609,941 km (0.07 R)

Kuiper Belt

Range: 30 - 47 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 186 - 12,782 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit