🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.26 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.52 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.48

Radius: 1.17

Gravity: 1.08 G

Time & Orbit

Eccentricity (e): 0.11

Orbit Range: 0.46 AU - 0.58 AU

Year: 242 Days

Day: 41.4 Hours

Environment

Temp: -116 °C

Axial Tilt: 23.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.54 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.9

Radius: 1.53

Gravity: 1.24 G

Time & Orbit

Eccentricity (e): 0.154

Orbit Range: 0.46 AU - 0.62 AU

Year: 256 Days

Day: 12.1 Hours

Environment

Temp: -115 °C

Axial Tilt: 19.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Terrestrial

Semi-Major Axis: 0.61 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.08

Radius: 1.03

Gravity: 1.02 G

Time & Orbit

Eccentricity (e): 0.14

Orbit Range: 0.52 AU - 0.7 AU

Year: 308 Days

Day: 27.7 Hours

Environment

Temp: -124 °C

Axial Tilt: 34.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 16,650,942 km

• M1: 67,169 km (0.095 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.71 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 558.1

Radius: 12.9

Gravity: 3.35 G

Time & Orbit

Eccentricity (e): 0.099

Orbit Range: 0.64 AU - 0.78 AU

Year: 386 Days

Day: 11.3 Hours

Environment

Temp: -133 °C

Axial Tilt: 17.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 16,650,942 km

• M1: 160,369 km (0.076 R)
• M2: 568,322 km (0.117 R)
• M3: 975,977 km (0.071 R)
• M4: 1,393,654 km (0.051 R)
• M5: 1,823,897 km (0.104 R)
• M6: 2,226,016 km (0.025 R)
• M7: 2,650,276 km (0.115 R)
• M8: 3,724,837 km (0.107 R)
• M9: 4,329,063 km (0.078 R)
• M10: 4,910,550 km (0.083 R)

Planet 5 - Gas Giant

Semi-Major Axis: 0.76 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 535.4

Radius: 9.6

Gravity: 5.81 G

Time & Orbit

Eccentricity (e): 0.055

Orbit Range: 0.72 AU - 0.8 AU

Year: 428 Days

Day: 7.9 Hours

Environment

Temp: -134 °C

Axial Tilt: 105.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 16,650,942 km

• M1: 119,379 km (0.106 R)
• M2: 457,321 km (0.073 R)
• M3: 1,160,580 km (0.072 R)
• M4: 1,490,892 km (0.105 R)
• M5: 1,946,418 km (0.054 R)
• M6: 2,456,098 km (0.05 R)
• M7: 2,915,662 km (0.103 R)
• M8: 3,272,005 km (0.115 R)
• M9: 3,995,161 km (0.095 R)
• M10: 5,259,412 km (0.119 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.18 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 122.3

Radius: 13.5

Gravity: 0.67 G

Time & Orbit

Eccentricity (e): 0.202

Orbit Range: 0.94 AU - 1.42 AU

Year: 828 Days

Day: 11.2 Hours

Environment

Temp: -176 °C

Axial Tilt: 2.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 16,650,942 km

• M1: 172,187 km (0.083 R)
• M2: 669,600 km (0.07 R)
• M3: 1,222,813 km (0.114 R)
• M4: 1,934,899 km (0.101 R)
• M5: 2,413,762 km (0.075 R)
• M6: 3,321,522 km (0.095 R)
• M7: 4,609,559 km (0.102 R)

Planet 7 - Gas Giant

Semi-Major Axis: 1.28 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 393.9

Radius: 8.8

Gravity: 5.09 G

Time & Orbit

Eccentricity (e): 0.239

Orbit Range: 0.97 AU - 1.59 AU

Year: 935 Days

Day: 6.6 Hours

Environment

Temp: -175 °C

Axial Tilt: 15.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 16,650,942 km

• M1: 112,797 km (0.071 R)
• M2: 487,390 km (0.066 R)
• M3: 809,025 km (0.114 R)
• M4: 1,336,208 km (0.099 R)
• M5: 2,116,062 km (0.027 R)
• M6: 2,557,076 km (0.086 R)
• M7: 2,997,044 km (0.112 R)
• M8: 4,320,237 km (0.099 R)
• M9: 5,173,394 km (0.083 R)
• M10: 5,463,015 km (0.04 R)
• M11: 6,015,779 km (0.113 R)
• M12: 7,144,046 km (0.066 R)

Planet 8 - Gas Giant

Semi-Major Axis: 1.36 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 461.4

Radius: 12

Gravity: 3.2 G

Time & Orbit

Eccentricity (e): 0.02

Orbit Range: 1.33 AU - 1.39 AU

Year: 1024 Days

Day: 10.4 Hours

Environment

Temp: -183 °C

Axial Tilt: 25.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 16,650,942 km

• M1: 149,299 km (0.12 R)
• M2: 540,497 km (0.115 R)
• M3: 995,873 km (0.045 R)
• M4: 1,798,466 km (0.078 R)
• M5: 2,326,546 km (0.106 R)
• M6: 2,703,383 km (0.055 R)
• M7: 3,186,584 km (0.119 R)
• M8: 3,741,742 km (0.109 R)
• M9: 4,442,907 km (0.077 R)
• M10: 5,174,441 km (0.072 R)
• M11: 5,569,529 km (0.048 R)
• M12: 5,984,812 km (0.076 R)
• M13: 6,463,376 km (0.099 R)
• M14: 7,784,624 km (0.08 R)
• M15: 8,204,246 km (0.057 R)
• M16: 8,795,906 km (0.059 R)

Planet 9 - Gas Giant

Semi-Major Axis: 2.23 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 621.1

Radius: 14.1

Gravity: 3.12 G

Time & Orbit

Eccentricity (e): 0.185

Orbit Range: 1.82 AU - 2.64 AU

Year: 2150 Days

Day: 8.7 Hours

Environment

Temp: -190 °C

Axial Tilt: 16.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 16,650,942 km

• M1: 175,329 km (0.105 R)
• M2: 772,823 km (0.102 R)
• M3: 1,413,550 km (0.119 R)
• M4: 2,066,545 km (0.069 R)
• M5: 3,068,701 km (0.052 R)
• M6: 3,524,825 km (0.111 R)
• M7: 4,275,507 km (0.045 R)
• M8: 5,219,919 km (0.084 R)
• M9: 5,850,773 km (0.098 R)
• M10: 7,015,392 km (0.044 R)
• M11: 8,145,155 km (0.111 R)
• M12: 8,834,203 km (0.055 R)
• M13: 13,172,691 km (0.111 R)
• M14: 14,212,097 km (0.095 R)
• M15: 16,601,624 km (0.113 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: 505 - 19,225 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit