🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.28 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.55 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.47

Radius: 1.82

Gravity: 1.35 G

Time & Orbit

Eccentricity (e): 0.059

Orbit Range: 0.52 AU - 0.58 AU

Year: 268 Days

Day: 40.9 Hours

Environment

Temp: -127 °C

Axial Tilt: 25.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.59 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.22

Radius: 0.55

Gravity: 0.73 G

Time & Orbit

Eccentricity (e): 0.121

Orbit Range: 0.52 AU - 0.66 AU

Year: 297 Days

Day: 15.5 Hours

Environment

Temp: -132 °C

Axial Tilt: 19.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.73 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 18.1

Radius: 13.2

Gravity: 0.1 G

Time & Orbit

Eccentricity (e): 0.086

Orbit Range: 0.67 AU - 0.79 AU

Year: 409 Days

Day: 6.5 Hours

Environment

Temp: -147 °C

Axial Tilt: 31.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (3)

Outer Limit: 30,173,399 km

• M1: 166,054 km (0.069 R)
• M2: 610,359 km (0.047 R)
• M3: 1,026,989 km (0.116 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.89 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 397.3

Radius: 13.9

Gravity: 2.06 G

Time & Orbit

Eccentricity (e): 0.21

Orbit Range: 0.7 AU - 1.08 AU

Year: 551 Days

Day: 11.5 Hours

Environment

Temp: -160 °C

Axial Tilt: 29.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 30,173,399 km

• M1: 172,935 km (0.108 R)
• M2: 654,341 km (0.107 R)
• M3: 1,207,105 km (0.055 R)
• M4: 1,961,527 km (0.111 R)
• M5: 2,666,582 km (0.082 R)
• M6: 3,406,044 km (0.088 R)
• M7: 4,320,237 km (0.061 R)
• M8: 5,155,292 km (0.093 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.43 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 411.3

Radius: 13.9

Gravity: 2.13 G

Time & Orbit

Eccentricity (e): 0.246

Orbit Range: 1.08 AU - 1.78 AU

Year: 1122 Days

Day: 7.9 Hours

Environment

Temp: -176 °C

Axial Tilt: 20.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 30,173,399 km

• M1: 172,935 km (0.119 R)
• M2: 695,630 km (0.086 R)
• M3: 1,200,373 km (0.087 R)
• M4: 2,197,294 km (0.109 R)
• M5: 2,912,671 km (0.11 R)
• M6: 3,604,710 km (0.086 R)
• M7: 4,052,457 km (0.114 R)
• M8: 4,504,093 km (0.053 R)
• M9: 5,625,778 km (0.109 R)
• M10: 6,529,498 km (0.107 R)
• M11: 7,269,110 km (0.052 R)
• M12: 7,792,852 km (0.09 R)
• M13: 8,889,554 km (0.073 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.39 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 469.3

Radius: 11.4

Gravity: 3.61 G

Time & Orbit

Eccentricity (e): 0.118

Orbit Range: 3.87 AU - 4.91 AU

Year: 6034 Days

Day: 12.3 Hours

Environment

Temp: -209 °C

Axial Tilt: 35.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 30,173,399 km

• M1: 141,819 km (0.07 R)
• M2: 541,544 km (0.038 R)
• M3: 1,027,887 km (0.078 R)
• M4: 1,418,337 km (0.111 R)
• M5: 2,496,340 km (0.114 R)
• M6: 3,103,258 km (0.064 R)
• M7: 3,589,152 km (0.091 R)
• M8: 4,437,970 km (0.096 R)
• M9: 6,123,340 km (0.052 R)
• M10: 6,499,728 km (0.112 R)
• M11: 7,093,333 km (0.118 R)
• M12: 8,542,338 km (0.098 R)
• M13: 9,964,565 km (0.113 R)
• M14: 10,799,769 km (0.12 R)
• M15: 11,872,685 km (0.08 R)
• M16: 12,811,412 km (0.108 R)
• M17: 14,393,410 km (0.108 R)
• M18: 15,288,454 km (0.074 R)
• M19: 19,110,679 km (0.073 R)
• M20: 21,241,850 km (0.045 R)
• M21: 22,107,873 km (0.109 R)
• M22: 22,475,584 km (0.057 R)

Kuiper Belt

Range: 30 - 48 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 528 - 11,209 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit