🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.32 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.64 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.32

Radius: 1.4

Gravity: 1.18 G

Time & Orbit

Eccentricity (e): 0.189

Orbit Range: 0.52 AU - 0.76 AU

Year: 185 Days

Day: 31.8 Hours

Environment

Temp: 153 °C

Axial Tilt: 16.9 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 0.68 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.8

Radius: 1.51

Gravity: 1.23 G

Time & Orbit

Eccentricity (e): 0.164

Orbit Range: 0.57 AU - 0.79 AU

Year: 203 Days

Day: 27.6 Hours

Environment

Temp: 133 °C

Axial Tilt: 32.2 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (1)

Outer Limit: 65,039,780 km

• M1: 44,431 km (0.069 R)

Planet 3 - Terrestrial

Semi-Major Axis: 0.7 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.49

Radius: 1.65

Gravity: 1.28 G

Time & Orbit

Eccentricity (e): 0.197

Orbit Range: 0.56 AU - 0.84 AU

Year: 212 Days

Day: 24.7 Hours

Environment

Temp: 205 °C

Axial Tilt: 33.3 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (1)

Outer Limit: 65,039,780 km

• M1: 249,828 km (0.075 R)

Planet 4 - Terrestrial

Semi-Major Axis: 1.07 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.58

Radius: 1.46

Gravity: 1.21 G

Time & Orbit

Eccentricity (e): 0.211

Orbit Range: 0.84 AU - 1.3 AU

Year: 400 Days

Day: 29.9 Hours

Environment

Temp: 34 °C

Axial Tilt: 19.3 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Satellites (2)

Outer Limit: 65,039,780 km

• M1: 37,100 km (0.107 R)
• M2: 223,499 km (0.103 R)

Planet 5 - Terrestrial

Semi-Major Axis: 1.14 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.6

Radius: 0.82

Gravity: 0.89 G

Time & Orbit

Eccentricity (e): 0.025

Orbit Range: 1.11 AU - 1.17 AU

Year: 440 Days

Day: 32.5 Hours

Environment

Temp: 2 °C

Axial Tilt: 27 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Satellites (1)

Outer Limit: 65,039,780 km

• M1: 214,374 km (0.073 R)

Planet 6 - Terrestrial

Semi-Major Axis: 1.67 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.57

Radius: 0.8

Gravity: 0.89 G

Time & Orbit

Eccentricity (e): 0.075

Orbit Range: 1.54 AU - 1.8 AU

Year: 780 Days

Day: 18.5 Hours

Environment

Temp: -48 °C

Axial Tilt: 28.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 7 - Terrestrial

Semi-Major Axis: 3.7 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.9

Radius: 1.29

Gravity: 1.14 G

Time & Orbit

Eccentricity (e): 0.122

Orbit Range: 3.25 AU - 4.15 AU

Year: 2574 Days

Day: 27.8 Hours

Environment

Temp: -116 °C

Axial Tilt: 49.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Asteroid Belt

Center: 6.78 AU

Composition

Type: Main (Rocky/Icy Mix)

A dense region of planetesimals and debris.

Boundary

Planet 8 - Gas Giant

Semi-Major Axis: 9.86 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 237.2

Radius: 10.1

Gravity: 2.33 G

Time & Orbit

Eccentricity (e): 0.153

Orbit Range: 8.35 AU - 11.37 AU

Year: 11197 Days

Day: 14.3 Hours

Environment

Temp: -182 °C

Axial Tilt: 36.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 65,039,780 km

• M1: 126,859 km (0.1 R)
• M2: 644,617 km (0.077 R)
• M3: 1,957,638 km (0.104 R)
• M4: 2,921,796 km (0.12 R)
• M5: 3,833,146 km (0.032 R)
• M6: 7,037,682 km (0.034 R)
• M7: 8,829,416 km (0.093 R)
• M8: 9,299,452 km (0.108 R)
• M9: 16,318,435 km (0.075 R)
• M10: 18,783,509 km (0.096 R)
• M11: 22,653,157 km (0.118 R)
• M12: 30,359,392 km (0.102 R)
• M13: 32,831,048 km (0.113 R)

Planet 9 - Ice Giant

Semi-Major Axis: 14.21 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 456

Radius: 4.2

Gravity: 25.85 G

Time & Orbit

Eccentricity (e): 0.028

Orbit Range: 13.81 AU - 14.61 AU

Year: 19372 Days

Day: 16.5 Hours

Environment

Temp: -178 °C

Axial Tilt: 5.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (41)

Outer Limit: 65,039,780 km

• M1: 52,210 km (0.114 R)
• M2: 230,530 km (0.114 R)
• M3: 534,064 km (0.046 R)
• M4: 792,420 km (0.113 R)
• M5: 1,043,445 km (0.117 R)
• M6: 1,572,573 km (0.113 R)
• M7: 2,122,345 km (0.116 R)
• M8: 2,366,489 km (0.051 R)
• M9: 2,814,684 km (0.096 R)
• M10: 2,959,644 km (0.091 R)
• M11: 4,337,441 km (0.065 R)
• M12: 5,934,847 km (0.075 R)
• M13: 6,419,245 km (0.08 R)
• M14: 7,744,831 km (0.063 R)
• M15: 8,622,223 km (0.064 R)
• M16: 9,137,438 km (0.064 R)
• M17: 9,618,245 km (0.05 R)
• M18: 10,399,595 km (0.109 R)
• M19: 11,526,366 km (0.1 R)
• M20: 15,540,526 km (0.079 R)
• M21: 16,770,819 km (0.095 R)
• M22: 17,899,385 km (0.068 R)
• M23: 20,127,945 km (0.03 R)
• M24: 20,758,051 km (0.083 R)
• M25: 21,401,172 km (0.068 R)
• M26: 22,342,891 km (0.057 R)
• M27: 23,018,325 km (0.104 R)
• M28: 24,817,539 km (0.058 R)
• M29: 25,126,309 km (0.113 R)
• M30: 25,333,502 km (0.094 R)
• M31: 30,773,778 km (0.079 R)
• M32: 31,609,432 km (0.047 R)
• M33: 32,337,525 km (0.068 R)
• M34: 38,708,299 km (0.11 R)
• M35: 53,002,825 km (0.108 R)
• M36: 55,947,060 km (0.09 R)
• M37: 56,477,684 km (0.076 R)
• M38: 57,011,749 km (0.051 R)
• M39: 58,089,751 km (0.101 R)
• M40: 58,998,558 km (0.058 R)
• M41: 64,263,057 km (0.059 R)

Kuiper Belt

Range: 30.3 - 53.3 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 234 - 10,979 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit