🌌 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: 0.94

Radius: 0.98

Gravity: 0.98 G

Time & Orbit

Eccentricity (e): 0.054

Orbit Range: 0.52 AU - 0.58 AU

Year: 268 Days

Day: 16.9 Hours

Environment

Temp: -120 °C

Axial Tilt: 3.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.72 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 507.3

Radius: 12.6

Gravity: 3.2 G

Time & Orbit

Eccentricity (e): 0.017

Orbit Range: 0.71 AU - 0.73 AU

Year: 401 Days

Day: 5.5 Hours

Environment

Temp: -147 °C

Axial Tilt: 32.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 19,322,228 km

• M1: 156,779 km (0.071 R)
• M2: 590,463 km (0.058 R)
• M3: 1,039,705 km (0.094 R)
• M4: 1,495,979 km (0.085 R)
• M5: 2,241,574 km (0.114 R)
• M6: 2,772,497 km (0.109 R)
• M7: 3,276,493 km (0.103 R)
• M8: 3,829,257 km (0.119 R)
• M9: 4,323,678 km (0.026 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.8 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 149.4

Radius: 8.9

Gravity: 1.89 G

Time & Orbit

Eccentricity (e): 0.079

Orbit Range: 0.74 AU - 0.86 AU

Year: 469 Days

Day: 14.6 Hours

Environment

Temp: -146 °C

Axial Tilt: 7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 19,322,228 km

• M1: 110,702 km (0.071 R)
• M2: 440,566 km (0.043 R)
• M3: 840,142 km (0.119 R)
• M4: 1,134,700 km (0.103 R)
• M5: 1,581,249 km (0.077 R)
• M6: 1,859,950 km (0.092 R)
• M7: 2,309,193 km (0.089 R)
• M8: 2,985,226 km (0.107 R)
• M9: 3,678,462 km (0.086 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.84 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 935.7

Radius: 13.6

Gravity: 5.06 G

Time & Orbit

Eccentricity (e): 0.06

Orbit Range: 0.79 AU - 0.89 AU

Year: 505 Days

Day: 14 Hours

Environment

Temp: -154 °C

Axial Tilt: 33.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 19,322,228 km

• M1: 169,195 km (0.12 R)
• M2: 593,455 km (0.057 R)
• M3: 1,045,689 km (0.096 R)
• M4: 1,590,076 km (0.111 R)
• M5: 2,091,378 km (0.114 R)
• M6: 2,907,584 km (0.115 R)
• M7: 3,447,333 km (0.119 R)
• M8: 3,927,094 km (0.041 R)
• M9: 4,699,318 km (0.103 R)
• M10: 5,482,463 km (0.108 R)
• M11: 5,914,950 km (0.061 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.76 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 111.3

Radius: 14.1

Gravity: 0.56 G

Time & Orbit

Eccentricity (e): 0.027

Orbit Range: 3.66 AU - 3.86 AU

Year: 4783 Days

Day: 7.3 Hours

Environment

Temp: -204 °C

Axial Tilt: 28.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 19,322,228 km

• M1: 175,329 km (0.028 R)
• M2: 913,445 km (0.119 R)
• M3: 1,504,805 km (0.077 R)
• M4: 2,694,407 km (0.115 R)
• M5: 3,326,608 km (0.063 R)
• M6: 3,982,595 km (0.066 R)
• M7: 4,891,252 km (0.058 R)
• M8: 6,876,715 km (0.106 R)
• M9: 7,342,114 km (0.079 R)
• M10: 9,721,169 km (0.092 R)
• M11: 10,273,783 km (0.032 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.94 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 273.7

Radius: 12.6

Gravity: 1.72 G

Time & Orbit

Eccentricity (e): 0.139

Orbit Range: 4.25 AU - 5.63 AU

Year: 7203 Days

Day: 12.4 Hours

Environment

Temp: -216 °C

Axial Tilt: 13.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 19,322,228 km

• M1: 156,629 km (0.026 R)
• M2: 556,504 km (0.078 R)
• M3: 1,295,069 km (0.117 R)
• M4: 1,856,061 km (0.059 R)
• M5: 3,257,194 km (0.041 R)
• M6: 4,356,739 km (0.096 R)
• M7: 4,773,967 km (0.106 R)
• M8: 5,775,675 km (0.097 R)
• M9: 6,466,069 km (0.069 R)
• M10: 7,346,003 km (0.099 R)
• M11: 7,904,153 km (0.075 R)
• M12: 10,042,056 km (0.117 R)
• M13: 10,468,709 km (0.084 R)
• M14: 11,496,148 km (0.112 R)
• M15: 11,916,069 km (0.11 R)
• M16: 13,544,442 km (0.039 R)
• M17: 16,580,830 km (0.104 R)
• M18: 20,860,077 km (0.098 R)
• M19: 21,768,285 km (0.114 R)
• M20: 23,513,793 km (0.036 R)
• M21: 24,191,920 km (0.086 R)
• M22: 24,728,229 km (0.084 R)
• M23: 27,946,827 km (0.102 R)

Planet 7 - Ice Giant

Semi-Major Axis: 6.27 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 42.3

Radius: 6.1

Gravity: 1.14 G

Time & Orbit

Eccentricity (e): 0.178

Orbit Range: 5.15 AU - 7.39 AU

Year: 10299 Days

Day: 18.9 Hours

Environment

Temp: -213 °C

Axial Tilt: 37.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 19,322,228 km

• M1: 79,885 km (0.082 R)
• M2: 277,953 km (0.099 R)
• M3: 559,945 km (0.077 R)
• M4: 1,035,068 km (0.106 R)
• M5: 1,671,008 km (0.026 R)
• M6: 2,023,461 km (0.092 R)
• M7: 3,006,618 km (0.078 R)
• M8: 4,171,088 km (0.104 R)
• M9: 4,444,403 km (0.1 R)
• M10: 6,181,085 km (0.095 R)
• M11: 7,140,456 km (0.098 R)
• M12: 8,326,019 km (0.099 R)

Kuiper Belt

Range: 30 - 52 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 236 - 14,850 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit