🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.33 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.66 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.06

Radius: 1.34

Gravity: 1.15 G

Time & Orbit

Eccentricity (e): 0.072

Orbit Range: 0.61 AU - 0.71 AU

Year: 352 Days

Day: 12.1 Hours

Environment

Temp: -139 °C

Axial Tilt: 7.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.69 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 174.9

Radius: 13.1

Gravity: 1.02 G

Time & Orbit

Eccentricity (e): 0.017

Orbit Range: 0.68 AU - 0.7 AU

Year: 376 Days

Day: 12.4 Hours

Environment

Temp: -134 °C

Axial Tilt: 6.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (5)

Outer Limit: 24,838,744 km

• M1: 162,912 km (0.042 R)
• M2: 677,529 km (0.092 R)
• M3: 1,180,327 km (0.12 R)
• M4: 1,987,857 km (0.11 R)
• M5: 2,845,052 km (0.102 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.86 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 645.2

Radius: 11.2

Gravity: 5.14 G

Time & Orbit

Eccentricity (e): 0.146

Orbit Range: 0.73 AU - 0.99 AU

Year: 523 Days

Day: 12.7 Hours

Environment

Temp: -160 °C

Axial Tilt: 49.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 24,838,744 km

• M1: 141,220 km (0.067 R)
• M2: 495,019 km (0.059 R)
• M3: 1,012,927 km (0.077 R)
• M4: 1,420,731 km (0.044 R)
• M5: 1,997,281 km (0.116 R)
• M6: 2,374,417 km (0.094 R)
• M7: 3,507,771 km (0.057 R)
• M8: 4,923,565 km (0.094 R)
• M9: 5,397,940 km (0.1 R)
• M10: 5,848,978 km (0.067 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.86 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 243.7

Radius: 13.9

Gravity: 1.26 G

Time & Orbit

Eccentricity (e): 0.04

Orbit Range: 0.83 AU - 0.89 AU

Year: 523 Days

Day: 10.4 Hours

Environment

Temp: -159 °C

Axial Tilt: 13.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 24,838,744 km

• M1: 175,628 km (0.084 R)
• M2: 1,217,128 km (0.096 R)
• M3: 1,670,260 km (0.108 R)
• M4: 2,206,419 km (0.098 R)
• M5: 2,800,173 km (0.095 R)
• M6: 3,335,584 km (0.111 R)
• M7: 4,024,183 km (0.105 R)

Planet 5 - Gas Giant

Semi-Major Axis: 0.94 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 175.9

Radius: 11.9

Gravity: 1.24 G

Time & Orbit

Eccentricity (e): 0.222

Orbit Range: 0.73 AU - 1.15 AU

Year: 598 Days

Day: 8.2 Hours

Environment

Temp: -154 °C

Axial Tilt: 33.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 24,838,744 km

• M1: 147,952 km (0.033 R)
• M2: 592,707 km (0.118 R)
• M3: 1,064,987 km (0.115 R)
• M4: 1,701,676 km (0.113 R)
• M5: 2,553,785 km (0.06 R)
• M6: 3,077,228 km (0.106 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.47 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 905.4

Radius: 12.6

Gravity: 5.7 G

Time & Orbit

Eccentricity (e): 0.125

Orbit Range: 1.29 AU - 1.65 AU

Year: 1169 Days

Day: 5.8 Hours

Environment

Temp: -175 °C

Axial Tilt: 38.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 24,838,744 km

• M1: 156,779 km (0.082 R)
• M2: 765,642 km (0.111 R)
• M3: 1,591,422 km (0.103 R)
• M4: 2,469,113 km (0.102 R)
• M5: 3,397,667 km (0.049 R)
• M6: 3,976,760 km (0.095 R)
• M7: 6,005,906 km (0.106 R)
• M8: 9,640,835 km (0.107 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.36 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 257.4

Radius: 10.8

Gravity: 2.21 G

Time & Orbit

Eccentricity (e): 0.053

Orbit Range: 2.23 AU - 2.49 AU

Year: 2378 Days

Day: 10.8 Hours

Environment

Temp: -188 °C

Axial Tilt: 31.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 24,838,744 km

• M1: 137,480 km (0.069 R)
• M2: 499,956 km (0.058 R)
• M3: 1,087,427 km (0.103 R)
• M4: 1,827,039 km (0.072 R)
• M5: 2,393,416 km (0.078 R)
• M6: 3,374,030 km (0.079 R)
• M7: 3,710,626 km (0.095 R)
• M8: 4,818,697 km (0.111 R)
• M9: 6,395,608 km (0.066 R)
• M10: 7,514,600 km (0.117 R)
• M11: 8,149,194 km (0.092 R)
• M12: 8,552,660 km (0.116 R)
• M13: 9,747,797 km (0.096 R)
• M14: 11,438,852 km (0.071 R)
• M15: 11,982,191 km (0.111 R)

Planet 8 - Gas Giant

Semi-Major Axis: 3.07 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 765.5

Radius: 8.4

Gravity: 10.85 G

Time & Orbit

Eccentricity (e): 0.244

Orbit Range: 2.32 AU - 3.82 AU

Year: 3529 Days

Day: 14.1 Hours

Environment

Temp: -211 °C

Axial Tilt: 0.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 24,838,744 km

• M1: 105,018 km (0.097 R)
• M2: 514,617 km (0.12 R)
• M3: 961,466 km (0.101 R)
• M4: 1,472,492 km (0.056 R)
• M5: 1,950,158 km (0.12 R)
• M6: 2,388,629 km (0.112 R)
• M7: 2,978,942 km (0.067 R)
• M8: 3,724,688 km (0.059 R)
• M9: 4,108,406 km (0.056 R)
• M10: 4,757,811 km (0.105 R)
• M11: 5,663,626 km (0.094 R)
• M12: 6,679,994 km (0.092 R)
• M13: 8,443,753 km (0.07 R)
• M14: 9,298,106 km (0.043 R)
• M15: 9,845,634 km (0.099 R)
• M16: 12,160,961 km (0.112 R)
• M17: 17,133,145 km (0.117 R)
• M18: 17,836,853 km (0.105 R)
• M19: 19,114,569 km (0.081 R)
• M20: 21,244,094 km (0.052 R)
• M21: 23,241,974 km (0.072 R)
• M22: 23,742,379 km (0.054 R)
• M23: 24,322,968 km (0.106 R)

Kuiper Belt

Range: 30 - 50 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 355 - 18,044 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit