🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.34 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.68 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.34

Radius: 0.65

Gravity: 0.8 G

Time & Orbit

Eccentricity (e): 0.046

Orbit Range: 0.65 AU - 0.71 AU

Year: 214 Days

Day: 47.3 Hours

Environment

Temp: 107 °C

Axial Tilt: 2.9 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 0.78 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.79

Radius: 1.87

Gravity: 1.37 G

Time & Orbit

Eccentricity (e): 0.084

Orbit Range: 0.71 AU - 0.85 AU

Year: 262 Days

Day: 29.2 Hours

Environment

Temp: 155 °C

Axial Tilt: 49 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 3 - Terrestrial

Semi-Major Axis: 0.8 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.32

Radius: 1.62

Gravity: 1.27 G

Time & Orbit

Eccentricity (e): 0.241

Orbit Range: 0.61 AU - 0.99 AU

Year: 272 Days

Day: 31.6 Hours

Environment

Temp: 105 °C

Axial Tilt: 19.5 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 4 - Terrestrial

Semi-Major Axis: 0.9 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.49

Radius: 1.65

Gravity: 1.28 G

Time & Orbit

Eccentricity (e): 0.02

Orbit Range: 0.88 AU - 0.92 AU

Year: 325 Days

Day: 42.6 Hours

Environment

Temp: 19 °C

Axial Tilt: 70.5 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Satellites (1)

Outer Limit: 94,597,401 km

• M1: 54,902 km (0.094 R)

Planet 5 - Terrestrial

Semi-Major Axis: 2.7 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.74

Radius: 1.69

Gravity: 1.31 G

Time & Orbit

Eccentricity (e): 0.239

Orbit Range: 2.05 AU - 3.35 AU

Year: 1689 Days

Day: 24 Hours

Environment

Temp: -102 °C

Axial Tilt: 109.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 6 - Terrestrial

Semi-Major Axis: 3.03 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.44

Radius: 1.16

Gravity: 1.07 G

Time & Orbit

Eccentricity (e): 0.017

Orbit Range: 2.98 AU - 3.08 AU

Year: 2008 Days

Day: 45.6 Hours

Environment

Temp: -121 °C

Axial Tilt: 21.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Asteroid Belt

Center: 4.2 AU

Composition

Type: Main (Rocky/Icy Mix)

A dense region of planetesimals and debris.

Boundary

Planet 7 - Gas Giant

Semi-Major Axis: 5.36 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 247.3

Radius: 9.4

Gravity: 2.8 G

Time & Orbit

Eccentricity (e): 0.073

Orbit Range: 4.97 AU - 5.75 AU

Year: 4725 Days

Day: 12.8 Hours

Environment

Temp: -148 °C

Axial Tilt: 9.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 94,597,401 km

• M1: 117,584 km (0.045 R)
• M2: 573,708 km (0.104 R)
• M3: 884,123 km (0.101 R)
• M4: 1,454,540 km (0.118 R)
• M5: 1,894,807 km (0.051 R)
• M6: 2,436,949 km (0.027 R)
• M7: 2,945,732 km (0.103 R)
• M8: 3,909,890 km (0.082 R)
• M9: 4,475,968 km (0.106 R)
• M10: 5,413,797 km (0.076 R)
• M11: 5,876,354 km (0.041 R)
• M12: 6,939,696 km (0.093 R)
• M13: 7,706,235 km (0.064 R)
• M14: 8,292,360 km (0.057 R)
• M15: 8,733,823 km (0.111 R)
• M16: 11,386,492 km (0.034 R)
• M17: 12,364,114 km (0.04 R)
• M18: 12,895,785 km (0.066 R)
• M19: 14,052,626 km (0.094 R)
• M20: 16,045,419 km (0.04 R)
• M21: 17,272,869 km (0.097 R)
• M22: 19,495,744 km (0.105 R)

Planet 8 - Gas Giant

Semi-Major Axis: 10.29 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 382.4

Radius: 10.4

Gravity: 3.54 G

Time & Orbit

Eccentricity (e): 0.042

Orbit Range: 9.86 AU - 10.72 AU

Year: 12570 Days

Day: 5.4 Hours

Environment

Temp: -181 °C

Axial Tilt: 29.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 94,597,401 km

• M1: 129,402 km (0.075 R)
• M2: 2,011,643 km (0.109 R)
• M3: 2,508,158 km (0.068 R)
• M4: 3,085,007 km (0.117 R)
• M5: 5,824,892 km (0.117 R)
• M6: 7,031,250 km (0.093 R)
• M7: 8,934,882 km (0.055 R)
• M8: 11,053,936 km (0.107 R)
• M9: 16,054,993 km (0.115 R)
• M10: 21,965,904 km (0.077 R)
• M11: 23,952,564 km (0.041 R)
• M12: 28,579,177 km (0.066 R)
• M13: 31,260,719 km (0.108 R)
• M14: 36,644,298 km (0.112 R)
• M15: 37,597,834 km (0.105 R)
• M16: 44,337,518 km (0.108 R)

Planet 9 - Ice Giant

Semi-Major Axis: 18.72 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 553.5

Radius: 4.7

Gravity: 25.06 G

Time & Orbit

Eccentricity (e): 0.018

Orbit Range: 18.38 AU - 19.06 AU

Year: 30843 Days

Day: 18.6 Hours

Environment

Temp: -208 °C

Axial Tilt: 19.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (31)

Outer Limit: 94,597,401 km

• M1: 58,642 km (0.088 R)
• M2: 556,504 km (0.091 R)
• M3: 921,523 km (0.089 R)
• M4: 1,837,810 km (0.07 R)
• M5: 2,316,822 km (0.073 R)
• M6: 3,070,048 km (0.095 R)
• M7: 5,083,934 km (0.076 R)
• M8: 7,418,708 km (0.091 R)
• M9: 8,905,112 km (0.111 R)
• M10: 9,625,277 km (0.079 R)
• M11: 10,513,738 km (0.111 R)
• M12: 10,710,908 km (0.116 R)
• M13: 11,112,878 km (0.086 R)
• M14: 13,505,397 km (0.113 R)
• M15: 13,974,386 km (0.103 R)
• M16: 17,200,464 km (0.1 R)
• M17: 18,219,375 km (0.118 R)
• M18: 18,599,653 km (0.11 R)
• M19: 26,869,124 km (0.052 R)
• M20: 27,485,916 km (0.073 R)
• M21: 31,386,232 km (0.108 R)
• M22: 35,787,850 km (0.035 R)
• M23: 48,462,380 km (0.098 R)
• M24: 56,896,409 km (0.066 R)
• M25: 57,301,370 km (0.046 R)
• M26: 58,734,069 km (0.096 R)
• M27: 67,155,831 km (0.107 R)
• M28: 68,290,381 km (0.106 R)
• M29: 75,124,460 km (0.105 R)
• M30: 90,131,820 km (0.105 R)
• M31: 91,789,514 km (0.103 R)

Kuiper Belt

Range: 30 - 53 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 325 - 11,427 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit