🌌 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: 0.6 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.05

Radius: 1.75

Gravity: 1.32 G

Time & Orbit

Eccentricity (e): 0.027

Orbit Range: 0.58 AU - 0.62 AU

Year: 212 Days

Day: 43.4 Hours

Environment

Temp: -13 °C

Axial Tilt: 29 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Planet 2 - Terrestrial

Semi-Major Axis: 0.9 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.75

Radius: 1.25

Gravity: 1.12 G

Time & Orbit

Eccentricity (e): 0.228

Orbit Range: 0.69 AU - 1.11 AU

Year: 390 Days

Day: 36 Hours

Environment

Temp: -63 °C

Axial Tilt: 5.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Terrestrial

Semi-Major Axis: 0.9 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.18

Radius: 1.77

Gravity: 1.33 G

Time & Orbit

Eccentricity (e): 0.176

Orbit Range: 0.74 AU - 1.06 AU

Year: 390 Days

Day: 12.7 Hours

Environment

Temp: -74 °C

Axial Tilt: 2.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Terrestrial

Semi-Major Axis: 1.2 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.67

Radius: 0.85

Gravity: 0.93 G

Time & Orbit

Eccentricity (e): 0.095

Orbit Range: 1.09 AU - 1.31 AU

Year: 600 Days

Day: 34.7 Hours

Environment

Temp: -91 °C

Axial Tilt: 42.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 20,763,108 km

• M1: 60,288 km (0.117 R)

Planet 5 - Terrestrial

Semi-Major Axis: 1.35 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.76

Radius: 0.9

Gravity: 0.94 G

Time & Orbit

Eccentricity (e): 0.231

Orbit Range: 1.04 AU - 1.66 AU

Year: 716 Days

Day: 36.5 Hours

Environment

Temp: -102 °C

Axial Tilt: 37.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Asteroid Belt

Center: 2.02 AU

Composition

Type: Main (Rocky/Icy Mix)

A dense region of planetesimals and debris.

Boundary

Planet 6 - Gas Giant

Semi-Major Axis: 2.69 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 84.7

Radius: 8.2

Gravity: 1.26 G

Time & Orbit

Eccentricity (e): 0.024

Orbit Range: 2.63 AU - 2.75 AU

Year: 2014 Days

Day: 13.2 Hours

Environment

Temp: -153 °C

Axial Tilt: 21.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 20,763,108 km

• M1: 108,907 km (0.078 R)
• M2: 429,047 km (0.095 R)
• M3: 769,083 km (0.117 R)
• M4: 1,406,519 km (0.099 R)
• M5: 2,196,546 km (0.064 R)
• M6: 3,014,696 km (0.063 R)
• M7: 3,493,409 km (0.069 R)
• M8: 4,158,372 km (0.069 R)
• M9: 6,557,473 km (0.07 R)
• M10: 7,027,958 km (0.088 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.77 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 246.1

Radius: 9.9

Gravity: 2.51 G

Time & Orbit

Eccentricity (e): 0.109

Orbit Range: 4.25 AU - 5.29 AU

Year: 4756 Days

Day: 12.6 Hours

Environment

Temp: -172 °C

Axial Tilt: 26.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 20,763,108 km

• M1: 134,040 km (0.118 R)
• M2: 461,360 km (0.026 R)
• M3: 1,366,427 km (0.099 R)
• M4: 1,674,299 km (0.11 R)
• M5: 2,942,291 km (0.103 R)
• M6: 3,728,428 km (0.087 R)
• M7: 5,018,410 km (0.117 R)
• M8: 5,458,078 km (0.091 R)
• M9: 6,247,805 km (0.079 R)
• M10: 7,263,425 km (0.07 R)
• M11: 8,657,678 km (0.095 R)
• M12: 10,222,322 km (0.069 R)
• M13: 10,611,725 km (0.074 R)
• M14: 11,924,745 km (0.081 R)
• M15: 12,576,244 km (0.086 R)
• M16: 18,844,395 km (0.104 R)
• M17: 20,577,935 km (0.12 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: 457 - 14,171 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit