🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.35 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.7 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.26

Radius: 0.58

Gravity: 0.77 G

Time & Orbit

Eccentricity (e): 0.158

Orbit Range: 0.59 AU - 0.81 AU

Year: 215 Days

Day: 47.4 Hours

Environment

Temp: 187 °C

Axial Tilt: 87 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 0.74 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.45

Radius: 1.16

Gravity: 1.08 G

Time & Orbit

Eccentricity (e): 0.206

Orbit Range: 0.59 AU - 0.89 AU

Year: 234 Days

Day: 19.8 Hours

Environment

Temp: 187 °C

Axial Tilt: 34.5 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 3 - Terrestrial

Semi-Major Axis: 1.25 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.55

Radius: 0.79

Gravity: 0.88 G

Time & Orbit

Eccentricity (e): 0.158

Orbit Range: 1.05 AU - 1.45 AU

Year: 513 Days

Day: 33 Hours

Environment

Temp: 5 °C

Axial Tilt: 39.7 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Planet 4 - Terrestrial

Semi-Major Axis: 2.26 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.05

Radius: 1.33

Gravity: 1.16 G

Time & Orbit

Eccentricity (e): 0.103

Orbit Range: 2.03 AU - 2.49 AU

Year: 1247 Days

Day: 38.1 Hours

Environment

Temp: -76 °C

Axial Tilt: 20.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Terrestrial

Semi-Major Axis: 3.42 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.61

Radius: 0.82

Gravity: 0.91 G

Time & Orbit

Eccentricity (e): 0.18

Orbit Range: 2.8 AU - 4.04 AU

Year: 2322 Days

Day: 36.6 Hours

Environment

Temp: -119 °C

Axial Tilt: 49.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 6 - Terrestrial

Semi-Major Axis: 4.35 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.49

Radius: 0.75

Gravity: 0.87 G

Time & Orbit

Eccentricity (e): 0.084

Orbit Range: 3.98 AU - 4.72 AU

Year: 3330 Days

Day: 47.3 Hours

Environment

Temp: -123 °C

Axial Tilt: 43.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Asteroid Belt

Center: 4.84 AU

Composition

Type: Main (Rocky/Icy Mix)

A dense region of planetesimals and debris.

Boundary

Planet 7 - Gas Giant

Semi-Major Axis: 5.32 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 999.4

Radius: 8.2

Gravity: 14.86 G

Time & Orbit

Eccentricity (e): 0.117

Orbit Range: 4.7 AU - 5.94 AU

Year: 4504 Days

Day: 11.6 Hours

Environment

Temp: -142 °C

Axial Tilt: 7.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 56,263,107 km

• M1: 129,253 km (0.086 R)
• M2: 401,072 km (0.101 R)
• M3: 862,581 km (0.118 R)
• M4: 1,267,244 km (0.032 R)
• M5: 1,976,337 km (0.064 R)
• M6: 3,345,158 km (0.11 R)
• M7: 3,645,700 km (0.093 R)
• M8: 4,011,168 km (0.097 R)
• M9: 4,762,747 km (0.051 R)
• M10: 5,033,071 km (0.105 R)
• M11: 5,694,144 km (0.102 R)
• M12: 6,911,571 km (0.079 R)
• M13: 8,726,493 km (0.113 R)
• M14: 9,636,496 km (0.079 R)
• M15: 9,982,666 km (0.077 R)
• M16: 11,355,226 km (0.069 R)
• M17: 11,644,249 km (0.061 R)
• M18: 13,375,396 km (0.112 R)
• M19: 13,915,594 km (0.069 R)
• M20: 16,528,470 km (0.118 R)
• M21: 18,975,742 km (0.118 R)
• M22: 22,174,444 km (0.088 R)
• M23: 22,626,379 km (0.093 R)
• M24: 25,304,629 km (0.117 R)
• M25: 26,635,153 km (0.086 R)
• M26: 28,187,081 km (0.111 R)
• M27: 29,981,208 km (0.048 R)

Planet 8 - Gas Giant

Semi-Major Axis: 5.38 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 787.4

Radius: 12.1

Gravity: 5.38 G

Time & Orbit

Eccentricity (e): 0.077

Orbit Range: 4.97 AU - 5.79 AU

Year: 4581 Days

Day: 10.8 Hours

Environment

Temp: -137 °C

Axial Tilt: 24.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 56,263,107 km

• M1: 150,495 km (0.089 R)
• M2: 1,096,104 km (0.075 R)
• M3: 1,952,402 km (0.11 R)
• M4: 2,334,325 km (0.088 R)
• M5: 3,040,128 km (0.043 R)
• M6: 7,022,423 km (0.07 R)
• M7: 7,787,766 km (0.116 R)
• M8: 10,552,933 km (0.085 R)
• M9: 13,756,571 km (0.064 R)
• M10: 16,221,496 km (0.094 R)
• M11: 17,872,158 km (0.113 R)
• M12: 20,450,627 km (0.062 R)
• M13: 21,291,367 km (0.066 R)
• M14: 25,845,426 km (0.116 R)
• M15: 26,662,828 km (0.1 R)

Planet 9 - Ice Giant

Semi-Major Axis: 14.13 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 291.4

Radius: 7.3

Gravity: 5.47 G

Time & Orbit

Eccentricity (e): 0.021

Orbit Range: 13.83 AU - 14.43 AU

Year: 19498 Days

Day: 22 Hours

Environment

Temp: -191 °C

Axial Tilt: 45.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 56,263,107 km

• M1: 90,956 km (0.103 R)
• M2: 412,890 km (0.077 R)
• M3: 1,124,378 km (0.118 R)
• M4: 1,532,929 km (0.105 R)
• M5: 1,931,458 km (0.06 R)
• M6: 2,822,313 km (0.102 R)
• M7: 3,148,736 km (0.058 R)
• M8: 3,397,368 km (0.11 R)
• M9: 4,105,564 km (0.095 R)
• M10: 4,433,333 km (0.093 R)
• M11: 4,810,768 km (0.108 R)
• M12: 6,341,903 km (0.081 R)
• M13: 9,590,271 km (0.113 R)
• M14: 15,445,980 km (0.046 R)
• M15: 16,313,648 km (0.113 R)
• M16: 19,690,072 km (0.075 R)
• M17: 20,623,263 km (0.108 R)
• M18: 21,942,716 km (0.101 R)
• M19: 24,265,672 km (0.098 R)
• M20: 30,611,315 km (0.118 R)
• M21: 32,793,349 km (0.105 R)
• M22: 39,557,267 km (0.094 R)
• M23: 45,565,567 km (0.072 R)
• M24: 46,153,486 km (0.098 R)

Kuiper Belt

Range: 30 - 45 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 243 - 14,095 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit