🌌 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: 0.63 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.32

Radius: 1.8

Gravity: 1.33 G

Time & Orbit

Eccentricity (e): 0.108

Orbit Range: 0.56 AU - 0.7 AU

Year: 177 Days

Day: 46.1 Hours

Environment

Temp: 216 °C

Axial Tilt: 0.5 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (1)

Outer Limit: 50,404,435 km

• M1: 115,190 km (0.036 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.76 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.79

Radius: 1.87

Gravity: 1.37 G

Time & Orbit

Eccentricity (e): 0.164

Orbit Range: 0.64 AU - 0.88 AU

Year: 234 Days

Day: 28.8 Hours

Environment

Temp: 122 °C

Axial Tilt: 23.5 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 3 - Terrestrial

Semi-Major Axis: 1.49 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.81

Radius: 1.51

Gravity: 1.23 G

Time & Orbit

Eccentricity (e): 0.041

Orbit Range: 1.43 AU - 1.55 AU

Year: 642 Days

Day: 30.3 Hours

Environment

Temp: 4 °C

Axial Tilt: 36.5 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Planet 4 - Terrestrial

Semi-Major Axis: 1.5 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.73

Radius: 1.49

Gravity: 1.23 G

Time & Orbit

Eccentricity (e): 0.139

Orbit Range: 1.29 AU - 1.71 AU

Year: 649 Days

Day: 24 Hours

Environment

Temp: -11 °C

Axial Tilt: 1.5 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Planet 5 - Terrestrial

Semi-Major Axis: 1.83 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.16

Radius: 1.58

Gravity: 1.27 G

Time & Orbit

Eccentricity (e): 0.019

Orbit Range: 1.8 AU - 1.86 AU

Year: 874 Days

Day: 24.7 Hours

Environment

Temp: -44 °C

Axial Tilt: 10.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 50,404,435 km

• M1: 836,850 km (0.093 R)

Planet 6 - Terrestrial

Semi-Major Axis: 3.25 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.65

Radius: 0.84

Gravity: 0.92 G

Time & Orbit

Eccentricity (e): 0.053

Orbit Range: 3.08 AU - 3.42 AU

Year: 2069 Days

Day: 39.9 Hours

Environment

Temp: -94 °C

Axial Tilt: 42 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 50,404,435 km

• M1: 29,770 km (0.101 R)
• M2: 1,045,988 km (0.078 R)

Asteroid Belt

Center: 4.62 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 7 - Gas Giant

Semi-Major Axis: 5.99 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 15.9

Radius: 11

Gravity: 0.13 G

Time & Orbit

Eccentricity (e): 0.014

Orbit Range: 5.91 AU - 6.07 AU

Year: 5177 Days

Day: 12.5 Hours

Environment

Temp: -147 °C

Axial Tilt: 12.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 50,404,435 km

• M1: 147,504 km (0.096 R)
• M2: 591,959 km (0.115 R)
• M3: 1,019,958 km (0.083 R)
• M4: 1,801,607 km (0.112 R)
• M5: 3,016,043 km (0.105 R)
• M6: 5,162,623 km (0.094 R)
• M7: 5,704,765 km (0.117 R)
• M8: 6,826,749 km (0.09 R)

Planet 8 - Ice Giant

Semi-Major Axis: 15.25 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 30.7

Radius: 3

Gravity: 3.41 G

Time & Orbit

Eccentricity (e): 0.226

Orbit Range: 11.8 AU - 18.7 AU

Year: 21028 Days

Day: 15.9 Hours

Environment

Temp: -188 °C

Axial Tilt: 35.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 50,404,435 km

• M1: 128,056 km (0.034 R)
• M2: 321,935 km (0.073 R)
• M3: 480,359 km (0.105 R)
• M4: 716,424 km (0.092 R)
• M5: 797,057 km (0.068 R)
• M6: 1,671,756 km (0.038 R)
• M7: 1,923,978 km (0.115 R)
• M8: 2,194,152 km (0.117 R)
• M9: 2,532,393 km (0.111 R)
• M10: 2,771,450 km (0.104 R)
• M11: 2,895,168 km (0.116 R)
• M12: 5,125,821 km (0.084 R)
• M13: 6,958,695 km (0.075 R)
• M14: 7,211,216 km (0.098 R)
• M15: 14,666,276 km (0.108 R)
• M16: 17,587,623 km (0.114 R)
• M17: 19,263,568 km (0.115 R)
• M18: 20,153,825 km (0.106 R)

Planet 9 - Ice Giant

Semi-Major Axis: 19.65 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 84.2

Radius: 3.9

Gravity: 5.54 G

Time & Orbit

Eccentricity (e): 0.191

Orbit Range: 15.9 AU - 23.4 AU

Year: 30757 Days

Day: 22.2 Hours

Environment

Temp: -204 °C

Axial Tilt: 32.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (33)

Outer Limit: 50,404,435 km

• M1: 49,367 km (0.085 R)
• M2: 179,517 km (0.109 R)
• M3: 860,637 km (0.106 R)
• M4: 1,007,542 km (0.108 R)
• M5: 1,753,287 km (0.107 R)
• M6: 2,022,713 km (0.037 R)
• M7: 2,290,343 km (0.092 R)
• M8: 3,638,370 km (0.075 R)
• M9: 3,746,679 km (0.12 R)
• M10: 5,108,767 km (0.115 R)
• M11: 6,647,381 km (0.109 R)
• M12: 9,753,183 km (0.079 R)
• M13: 12,387,003 km (0.053 R)
• M14: 14,786,702 km (0.098 R)
• M15: 15,615,325 km (0.083 R)
• M16: 16,351,795 km (0.084 R)
• M17: 17,815,910 km (0.111 R)
• M18: 20,674,276 km (0.111 R)
• M19: 24,301,725 km (0.09 R)
• M20: 26,663,128 km (0.075 R)
• M21: 27,997,242 km (0.119 R)
• M22: 29,749,631 km (0.057 R)
• M23: 30,215,479 km (0.074 R)
• M24: 31,000,120 km (0.098 R)
• M25: 32,356,972 km (0.085 R)
• M26: 32,518,388 km (0.082 R)
• M27: 34,571,769 km (0.118 R)
• M28: 40,746,271 km (0.106 R)
• M29: 43,134,302 km (0.101 R)
• M30: 44,827,451 km (0.074 R)
• M31: 45,878,226 km (0.082 R)
• M32: 46,553,212 km (0.067 R)
• M33: 46,650,151 km (0.116 R)

Kuiper Belt

Range: 31.1 - 61.1 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 353 - 12,554 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit