🌌 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: 0.54 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.85

Radius: 1.71

Gravity: 1.32 G

Time & Orbit

Eccentricity (e): 0.164

Orbit Range: 0.45 AU - 0.63 AU

Year: 260 Days

Day: 28.1 Hours

Environment

Temp: -125 °C

Axial Tilt: 129.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 20,635,333 km

• M1: 54,603 km (0.036 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.6 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.24

Radius: 1.6

Gravity: 1.27 G

Time & Orbit

Eccentricity (e): 0.113

Orbit Range: 0.53 AU - 0.67 AU

Year: 305 Days

Day: 40.6 Hours

Environment

Temp: -126 °C

Axial Tilt: 42 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.89 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 242

Radius: 10.2

Gravity: 2.33 G

Time & Orbit

Eccentricity (e): 0.135

Orbit Range: 0.77 AU - 1.01 AU

Year: 551 Days

Day: 6.5 Hours

Environment

Temp: -149 °C

Axial Tilt: 17.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 20,635,333 km

• M1: 128,505 km (0.064 R)
• M2: 536,757 km (0.12 R)
• M3: 870,959 km (0.085 R)
• M4: 1,216,829 km (0.058 R)
• M5: 1,609,523 km (0.106 R)
• M6: 3,219,645 km (0.117 R)
• M7: 3,657,070 km (0.117 R)
• M8: 4,095,840 km (0.058 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.31 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 201.4

Radius: 12.7

Gravity: 1.25 G

Time & Orbit

Eccentricity (e): 0.121

Orbit Range: 1.15 AU - 1.47 AU

Year: 984 Days

Day: 10 Hours

Environment

Temp: -173 °C

Axial Tilt: 4.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 20,635,333 km

• M1: 158,125 km (0.075 R)
• M2: 605,123 km (0.105 R)
• M3: 1,472,492 km (0.076 R)
• M4: 2,099,905 km (0.096 R)
• M5: 3,221,889 km (0.103 R)
• M6: 3,644,204 km (0.105 R)
• M7: 5,256,420 km (0.091 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.71 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 491.3

Radius: 8.6

Gravity: 6.64 G

Time & Orbit

Eccentricity (e): 0.228

Orbit Range: 1.32 AU - 2.1 AU

Year: 1467 Days

Day: 13.6 Hours

Environment

Temp: -181 °C

Axial Tilt: 39 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 20,635,333 km

• M1: 106,962 km (0.084 R)
• M2: 559,646 km (0.087 R)
• M3: 1,021,305 km (0.105 R)
• M4: 1,447,958 km (0.11 R)
• M5: 2,032,137 km (0.081 R)
• M6: 2,598,216 km (0.085 R)
• M7: 3,050,151 km (0.044 R)
• M8: 3,958,509 km (0.101 R)
• M9: 4,688,996 km (0.11 R)
• M10: 5,076,604 km (0.106 R)
• M11: 5,762,809 km (0.111 R)
• M12: 6,462,478 km (0.12 R)
• M13: 7,551,252 km (0.081 R)
• M14: 8,444,650 km (0.079 R)
• M15: 8,786,481 km (0.118 R)
• M16: 9,528,337 km (0.111 R)
• M17: 10,215,291 km (0.111 R)
• M18: 11,863,261 km (0.092 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.94 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 34.6

Radius: 13.1

Gravity: 0.2 G

Time & Orbit

Eccentricity (e): 0.085

Orbit Range: 2.69 AU - 3.19 AU

Year: 3307 Days

Day: 6 Hours

Environment

Temp: -208 °C

Axial Tilt: 16.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 20,635,333 km

• M1: 168,447 km (0.067 R)
• M2: 622,477 km (0.078 R)
• M3: 1,105,079 km (0.048 R)
• M4: 2,049,192 km (0.091 R)
• M5: 4,530,422 km (0.065 R)
• M6: 7,243,080 km (0.077 R)
• M7: 7,794,498 km (0.044 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.42 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 16.8

Radius: 10.8

Gravity: 0.14 G

Time & Orbit

Eccentricity (e): 0.249

Orbit Range: 2.57 AU - 4.27 AU

Year: 4149 Days

Day: 12.4 Hours

Environment

Temp: -202 °C

Axial Tilt: 2.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 20,635,333 km

• M1: 137,331 km (0.12 R)
• M2: 841,937 km (0.099 R)
• M3: 1,339,649 km (0.081 R)
• M4: 1,828,535 km (0.105 R)
• M5: 2,549,148 km (0.075 R)
• M6: 3,059,426 km (0.094 R)
• M7: 5,375,500 km (0.119 R)
• M8: 6,599,660 km (0.089 R)

Planet 8 - Gas Giant

Semi-Major Axis: 4.21 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 170.2

Radius: 9

Gravity: 2.1 G

Time & Orbit

Eccentricity (e): 0.173

Orbit Range: 3.48 AU - 4.94 AU

Year: 5667 Days

Day: 14 Hours

Environment

Temp: -220 °C

Axial Tilt: 41.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 20,635,333 km

• M1: 112,049 km (0.116 R)
• M2: 392,096 km (0.066 R)
• M3: 1,229,246 km (0.108 R)
• M4: 2,148,973 km (0.103 R)
• M5: 2,616,317 km (0.11 R)
• M6: 3,735,459 km (0.03 R)
• M7: 5,517,319 km (0.088 R)
• M8: 6,883,447 km (0.108 R)
• M9: 7,457,454 km (0.044 R)
• M10: 9,050,222 km (0.05 R)
• M11: 9,851,319 km (0.103 R)
• M12: 10,346,488 km (0.09 R)
• M13: 14,825,448 km (0.073 R)
• M14: 15,731,263 km (0.112 R)
• M15: 16,833,949 km (0.076 R)
• M16: 17,212,731 km (0.066 R)
• M17: 17,597,347 km (0.086 R)
• M18: 19,017,480 km (0.067 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: 338 - 15,674 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit