🌌 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: 0.51 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.12

Radius: 1.58

Gravity: 1.25 G

Time & Orbit

Eccentricity (e): 0.17

Orbit Range: 0.42 AU - 0.6 AU

Year: 239 Days

Day: 20.1 Hours

Environment

Temp: -111 °C

Axial Tilt: 34.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.64 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.64

Radius: 1.85

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.123

Orbit Range: 0.56 AU - 0.72 AU

Year: 336 Days

Day: 20.5 Hours

Environment

Temp: -136 °C

Axial Tilt: 25.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 21,611,594 km

• M1: 577,149 km (0.095 R)
• M2: 682,615 km (0.088 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.9 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 387.3

Radius: 11.9

Gravity: 2.73 G

Time & Orbit

Eccentricity (e): 0.011

Orbit Range: 0.89 AU - 0.91 AU

Year: 560 Days

Day: 10.9 Hours

Environment

Temp: -155 °C

Axial Tilt: 25.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 21,611,594 km

• M1: 147,952 km (0.034 R)
• M2: 518,057 km (0.114 R)
• M3: 898,036 km (0.066 R)
• M4: 1,285,794 km (0.026 R)
• M5: 2,029,894 km (0.037 R)
• M6: 3,164,145 km (0.063 R)
• M7: 3,596,034 km (0.034 R)
• M8: 4,107,359 km (0.094 R)
• M9: 5,197,628 km (0.068 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.73 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 983.2

Radius: 15

Gravity: 4.37 G

Time & Orbit

Eccentricity (e): 0.075

Orbit Range: 2.53 AU - 2.93 AU

Year: 2959 Days

Day: 9 Hours

Environment

Temp: -207 °C

Axial Tilt: 38.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 21,611,594 km

• M1: 186,549 km (0.104 R)
• M2: 666,010 km (0.106 R)
• M3: 1,164,769 km (0.104 R)
• M4: 1,989,652 km (0.079 R)
• M5: 2,460,287 km (0.11 R)
• M6: 3,200,347 km (0.038 R)
• M7: 4,370,203 km (0.057 R)
• M8: 4,858,789 km (0.108 R)
• M9: 5,593,913 km (0.1 R)
• M10: 7,129,386 km (0.064 R)
• M11: 8,428,045 km (0.068 R)
• M12: 9,607,325 km (0.084 R)
• M13: 12,475,714 km (0.077 R)
• M14: 13,907,067 km (0.046 R)
• M15: 14,662,536 km (0.079 R)
• M16: 16,588,010 km (0.063 R)
• M17: 17,438,025 km (0.096 R)
• M18: 18,737,283 km (0.086 R)
• M19: 23,302,112 km (0.057 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.34 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 844.3

Radius: 13.1

Gravity: 4.92 G

Time & Orbit

Eccentricity (e): 0.068

Orbit Range: 3.11 AU - 3.57 AU

Year: 4004 Days

Day: 12.4 Hours

Environment

Temp: -210 °C

Axial Tilt: 37.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 21,611,594 km

• M1: 168,597 km (0.118 R)
• M2: 601,832 km (0.058 R)
• M3: 1,089,671 km (0.117 R)
• M4: 1,722,320 km (0.038 R)
• M5: 2,263,865 km (0.072 R)
• M6: 3,063,166 km (0.037 R)
• M7: 3,488,922 km (0.102 R)
• M8: 4,065,771 km (0.071 R)
• M9: 4,681,067 km (0.103 R)
• M10: 5,169,354 km (0.096 R)
• M11: 5,606,779 km (0.061 R)
• M12: 7,337,476 km (0.119 R)
• M13: 7,856,431 km (0.104 R)
• M14: 8,775,710 km (0.028 R)
• M15: 9,683,769 km (0.038 R)
• M16: 11,365,399 km (0.078 R)
• M17: 13,436,881 km (0.109 R)
• M18: 15,805,913 km (0.092 R)
• M19: 16,614,938 km (0.097 R)
• M20: 17,451,340 km (0.12 R)
• M21: 21,357,190 km (0.104 R)
• M22: 25,184,353 km (0.099 R)
• M23: 27,754,145 km (0.11 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.42 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 929.4

Radius: 13.8

Gravity: 4.88 G

Time & Orbit

Eccentricity (e): 0.217

Orbit Range: 2.68 AU - 4.16 AU

Year: 4149 Days

Day: 9.5 Hours

Environment

Temp: -217 °C

Axial Tilt: 37.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 21,611,594 km

• M1: 171,738 km (0.086 R)
• M2: 669,750 km (0.075 R)
• M3: 1,953,000 km (0.12 R)
• M4: 2,456,397 km (0.107 R)
• M5: 2,899,805 km (0.105 R)
• M6: 3,499,094 km (0.09 R)
• M7: 4,896,189 km (0.073 R)
• M8: 8,010,068 km (0.064 R)
• M9: 11,079,966 km (0.084 R)
• M10: 11,967,830 km (0.075 R)
• M11: 14,044,996 km (0.104 R)
• M12: 16,352,842 km (0.093 R)
• M13: 18,968,860 km (0.092 R)
• M14: 19,899,658 km (0.119 R)
• M15: 23,549,697 km (0.06 R)
• M16: 29,519,101 km (0.08 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.24 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 101.4

Radius: 11.7

Gravity: 0.74 G

Time & Orbit

Eccentricity (e): 0.205

Orbit Range: 4.17 AU - 6.31 AU

Year: 7869 Days

Day: 13.2 Hours

Environment

Temp: -218 °C

Axial Tilt: 38.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 21,611,594 km

• M1: 145,559 km (0.099 R)
• M2: 577,448 km (0.072 R)
• M3: 1,057,956 km (0.084 R)
• M4: 1,793,379 km (0.044 R)
• M5: 2,564,257 km (0.071 R)
• M6: 3,060,473 km (0.094 R)
• M7: 4,162,860 km (0.088 R)
• M8: 4,805,383 km (0.109 R)
• M9: 5,261,507 km (0.065 R)
• M10: 5,693,994 km (0.099 R)
• M11: 6,717,992 km (0.087 R)
• M12: 9,907,418 km (0.082 R)
• M13: 11,427,183 km (0.112 R)
• M14: 12,111,593 km (0.084 R)
• M15: 14,232,293 km (0.116 R)
• M16: 14,874,067 km (0.078 R)
• M17: 15,690,124 km (0.112 R)
• M18: 16,915,480 km (0.119 R)
• M19: 18,088,926 km (0.086 R)
• M20: 19,375,767 km (0.044 R)

Kuiper Belt

Range: 30 - 45 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 331 - 11,796 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit