🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.27 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.53 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.52

Radius: 1.65

Gravity: 1.29 G

Time & Orbit

Eccentricity (e): 0.035

Orbit Range: 0.51 AU - 0.55 AU

Year: 249 Days

Day: 25.9 Hours

Environment

Temp: -117 °C

Axial Tilt: 27.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.73 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 914.4

Radius: 11.5

Gravity: 6.91 G

Time & Orbit

Eccentricity (e): 0.178

Orbit Range: 0.6 AU - 0.86 AU

Year: 403 Days

Day: 6.6 Hours

Environment

Temp: -145 °C

Axial Tilt: 16.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 48,835,620 km

• M1: 143,315 km (0.074 R)
• M2: 545,434 km (0.094 R)
• M3: 923,168 km (0.114 R)
• M4: 1,708,856 km (0.039 R)
• M5: 2,302,012 km (0.086 R)
• M6: 2,750,058 km (0.097 R)
• M7: 3,152,476 km (0.091 R)
• M8: 3,669,785 km (0.114 R)
• M9: 4,077,290 km (0.096 R)
• M10: 4,603,426 km (0.116 R)
• M11: 5,206,754 km (0.07 R)
• M12: 5,861,993 km (0.109 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.83 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 973.6

Radius: 11.9

Gravity: 6.88 G

Time & Orbit

Eccentricity (e): 0.045

Orbit Range: 0.79 AU - 0.87 AU

Year: 488 Days

Day: 5.8 Hours

Environment

Temp: -139 °C

Axial Tilt: 36 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 48,835,620 km

• M1: 147,952 km (0.117 R)
• M2: 666,608 km (0.09 R)
• M3: 1,168,359 km (0.048 R)
• M4: 1,581,549 km (0.12 R)
• M5: 2,084,497 km (0.104 R)
• M6: 2,535,534 km (0.092 R)
• M7: 3,218,897 km (0.032 R)
• M8: 3,785,425 km (0.033 R)
• M9: 4,194,425 km (0.085 R)
• M10: 4,953,185 km (0.068 R)
• M11: 5,638,643 km (0.11 R)
• M12: 6,193,501 km (0.079 R)
• M13: 6,764,217 km (0.068 R)

Planet 4 - Ice Giant

Semi-Major Axis: 6.17 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 739.8

Radius: 5.3

Gravity: 26.34 G

Time & Orbit

Eccentricity (e): 0.219

Orbit Range: 4.82 AU - 7.52 AU

Year: 9896 Days

Day: 21.4 Hours

Environment

Temp: -220 °C

Axial Tilt: 27.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 48,835,620 km

• M1: 66,122 km (0.074 R)
• M2: 281,094 km (0.108 R)
• M3: 715,078 km (0.119 R)
• M4: 1,802,654 km (0.102 R)
• M5: 3,210,670 km (0.056 R)
• M6: 3,783,330 km (0.061 R)
• M7: 4,248,729 km (0.098 R)
• M8: 6,688,670 km (0.096 R)
• M9: 7,618,122 km (0.094 R)
• M10: 9,241,109 km (0.117 R)
• M11: 9,980,721 km (0.098 R)
• M12: 13,959,875 km (0.11 R)
• M13: 27,054,476 km (0.045 R)
• M14: 27,550,542 km (0.068 R)
• M15: 28,255,298 km (0.056 R)
• M16: 36,095,124 km (0.064 R)
• M17: 36,817,382 km (0.094 R)
• M18: 39,167,715 km (0.065 R)
• M19: 39,930,364 km (0.082 R)
• M20: 40,573,187 km (0.087 R)
• M21: 41,616,332 km (0.065 R)

Kuiper Belt

Range: 30 - 55 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 201 - 19,084 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit