🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.4 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.79 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.2

Radius: 1.59

Gravity: 1.27 G

Time & Orbit

Eccentricity (e): 0.02

Orbit Range: 0.77 AU - 0.81 AU

Year: 253 Days

Day: 42 Hours

Environment

Temp: 108 °C

Axial Tilt: 45.2 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 1.04 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.9

Radius: 1.29

Gravity: 1.14 G

Time & Orbit

Eccentricity (e): 0.083

Orbit Range: 0.95 AU - 1.13 AU

Year: 382 Days

Day: 28.8 Hours

Environment

Temp: 32 °C

Axial Tilt: 20.6 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Planet 3 - Terrestrial

Semi-Major Axis: 1.13 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.81

Radius: 1.27

Gravity: 1.12 G

Time & Orbit

Eccentricity (e): 0.211

Orbit Range: 0.89 AU - 1.37 AU

Year: 432 Days

Day: 27.6 Hours

Environment

Temp: 17 °C

Axial Tilt: 11.8 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Satellites (2)

Outer Limit: 72,000,800 km

• M1: 40,691 km (0.105 R)
• M2: 234,869 km (0.05 R)

Planet 4 - Terrestrial

Semi-Major Axis: 1.32 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.35

Radius: 1.13

Gravity: 1.06 G

Time & Orbit

Eccentricity (e): 0.049

Orbit Range: 1.26 AU - 1.38 AU

Year: 546 Days

Day: 22.3 Hours

Environment

Temp: 1 °C

Axial Tilt: 24.8 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Planet 5 - Terrestrial

Semi-Major Axis: 1.65 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.38

Radius: 1.63

Gravity: 1.27 G

Time & Orbit

Eccentricity (e): 0.088

Orbit Range: 1.5 AU - 1.8 AU

Year: 763 Days

Day: 32.3 Hours

Environment

Temp: -48 °C

Axial Tilt: 3.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 6 - Terrestrial

Semi-Major Axis: 3.85 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.98

Radius: 1.31

Gravity: 1.15 G

Time & Orbit

Eccentricity (e): 0.152

Orbit Range: 3.26 AU - 4.44 AU

Year: 2719 Days

Day: 15.5 Hours

Environment

Temp: -125 °C

Axial Tilt: 28.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 7 - Terrestrial

Semi-Major Axis: 4.4 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.33

Radius: 1.62

Gravity: 1.27 G

Time & Orbit

Eccentricity (e): 0.029

Orbit Range: 4.27 AU - 4.53 AU

Year: 3322 Days

Day: 26.1 Hours

Environment

Temp: -123 °C

Axial Tilt: 25.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 72,000,800 km

• M1: 60,288 km (0.06 R)

Asteroid Belt

Center: 8.05 AU

Composition

Type: Far Outer (Icy/Cometary)

A dense region of planetesimals and debris.

Boundary

Planet 8 - Gas Giant

Semi-Major Axis: 11.69 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 230.4

Radius: 11.4

Gravity: 1.77 G

Time & Orbit

Eccentricity (e): 0.152

Orbit Range: 9.91 AU - 13.47 AU

Year: 14384 Days

Day: 5.4 Hours

Environment

Temp: -180 °C

Axial Tilt: 10.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (28)

Outer Limit: 72,000,800 km

• M1: 141,819 km (0.105 R)
• M2: 636,988 km (0.078 R)
• M3: 1,031,926 km (0.101 R)
• M4: 1,880,296 km (0.091 R)
• M5: 2,614,672 km (0.072 R)
• M6: 3,017,090 km (0.088 R)
• M7: 4,593,552 km (0.072 R)
• M8: 5,594,063 km (0.085 R)
• M9: 7,940,805 km (0.092 R)
• M10: 9,470,443 km (0.101 R)
• M11: 9,893,655 km (0.09 R)
• M12: 10,477,685 km (0.075 R)
• M13: 11,449,174 km (0.093 R)
• M14: 14,231,694 km (0.096 R)
• M15: 16,746,883 km (0.118 R)
• M16: 19,848,496 km (0.105 R)
• M17: 22,391,660 km (0.08 R)
• M18: 22,807,841 km (0.098 R)
• M19: 24,612,290 km (0.051 R)
• M20: 26,510,089 km (0.101 R)
• M21: 27,069,735 km (0.106 R)
• M22: 32,255,545 km (0.075 R)
• M23: 32,786,767 km (0.118 R)
• M24: 34,085,127 km (0.118 R)
• M25: 34,747,097 km (0.095 R)
• M26: 37,597,834 km (0.095 R)
• M27: 39,623,090 km (0.083 R)
• M28: 41,469,577 km (0.11 R)

Planet 9 - Ice Giant

Semi-Major Axis: 17.18 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 353.5

Radius: 3.9

Gravity: 23.24 G

Time & Orbit

Eccentricity (e): 0.086

Orbit Range: 15.7 AU - 18.66 AU

Year: 25628 Days

Day: 20.6 Hours

Environment

Temp: -186 °C

Axial Tilt: 33.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (45)

Outer Limit: 72,000,800 km

• M1: 55,950 km (0.097 R)
• M2: 327,021 km (0.091 R)
• M3: 518,955 km (0.104 R)
• M4: 668,403 km (0.051 R)
• M5: 970,441 km (0.094 R)
• M6: 1,132,755 km (0.096 R)
• M7: 1,342,491 km (0.103 R)
• M8: 1,933,552 km (0.046 R)
• M9: 2,495,741 km (0.031 R)
• M10: 2,634,269 km (0.105 R)
• M11: 3,377,621 km (0.034 R)
• M12: 4,154,632 km (0.117 R)
• M13: 5,889,818 km (0.052 R)
• M14: 6,094,468 km (0.112 R)
• M15: 6,518,129 km (0.115 R)
• M16: 7,143,747 km (0.074 R)
• M17: 9,042,593 km (0.091 R)
• M18: 11,066,652 km (0.051 R)
• M19: 12,820,388 km (0.111 R)
• M20: 15,358,166 km (0.047 R)
• M21: 16,948,990 km (0.105 R)
• M22: 17,113,847 km (0.026 R)
• M23: 17,699,373 km (0.059 R)
• M24: 18,125,727 km (0.107 R)
• M25: 18,558,962 km (0.069 R)
• M26: 18,822,105 km (0.11 R)
• M27: 20,453,769 km (0.108 R)
• M28: 27,581,509 km (0.057 R)
• M29: 29,561,287 km (0.045 R)
• M30: 30,040,599 km (0.088 R)
• M31: 30,524,997 km (0.11 R)
• M32: 34,456,878 km (0.091 R)
• M33: 34,987,651 km (0.06 R)
• M34: 35,254,982 km (0.12 R)
• M35: 39,575,668 km (0.113 R)
• M36: 44,236,240 km (0.079 R)
• M37: 48,250,848 km (0.044 R)
• M38: 48,748,411 km (0.062 R)
• M39: 52,152,810 km (0.102 R)
• M40: 55,894,402 km (0.075 R)
• M41: 56,995,442 km (0.064 R)
• M42: 58,673,781 km (0.115 R)
• M43: 62,129,043 km (0.092 R)
• M44: 69,441,536 km (0.119 R)
• M45: 71,785,137 km (0.108 R)

Kuiper Belt

Range: 30.5 - 60.5 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 387 - 18,994 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit