🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.38 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Gas Giant

Semi-Major Axis: 0.75 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 875.3

Radius: 11.8

Gravity: 6.29 G

Time & Orbit

Eccentricity (e): 0.009

Orbit Range: 0.74 AU - 0.76 AU

Year: 413 Days

Day: 8.7 Hours

Environment

Temp: -145 °C

Axial Tilt: 35.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 67,974,905 km

• M1: 147,952 km (0.104 R)
• M2: 593,156 km (0.108 R)
• M3: 1,457,382 km (0.118 R)
• M4: 1,859,651 km (0.094 R)
• M5: 2,236,937 km (0.095 R)
• M6: 2,873,925 km (0.056 R)
• M7: 3,276,792 km (0.104 R)
• M8: 3,691,926 km (0.082 R)
• M9: 4,101,226 km (0.103 R)
• M10: 4,779,802 km (0.119 R)
• M11: 5,753,385 km (0.115 R)

Planet 2 - Gas Giant

Semi-Major Axis: 1.34 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 345.5

Radius: 12.9

Gravity: 2.08 G

Time & Orbit

Eccentricity (e): 0.215

Orbit Range: 1.05 AU - 1.63 AU

Year: 986 Days

Day: 11.7 Hours

Environment

Temp: -170 °C

Axial Tilt: 7.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 67,974,905 km

• M1: 165,006 km (0.096 R)
• M2: 601,982 km (0.041 R)
• M3: 1,026,989 km (0.079 R)
• M4: 1,547,590 km (0.073 R)
• M5: 2,273,140 km (0.056 R)
• M6: 2,794,787 km (0.115 R)
• M7: 3,679,210 km (0.085 R)
• M8: 4,372,297 km (0.118 R)
• M9: 5,274,372 km (0.119 R)
• M10: 6,197,092 km (0.11 R)
• M11: 7,335,382 km (0.046 R)
• M12: 7,814,095 km (0.071 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.86 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 546.3

Radius: 12.5

Gravity: 3.5 G

Time & Orbit

Eccentricity (e): 0.026

Orbit Range: 1.81 AU - 1.91 AU

Year: 1613 Days

Day: 9.9 Hours

Environment

Temp: -179 °C

Axial Tilt: 12.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 67,974,905 km

• M1: 155,432 km (0.082 R)
• M2: 594,053 km (0.085 R)
• M3: 1,026,541 km (0.112 R)
• M4: 1,954,047 km (0.056 R)
• M5: 2,344,647 km (0.078 R)
• M6: 2,801,519 km (0.082 R)
• M7: 3,983,043 km (0.088 R)
• M8: 4,953,036 km (0.113 R)
• M9: 6,051,234 km (0.076 R)
• M10: 6,695,253 km (0.084 R)
• M11: 7,437,258 km (0.039 R)
• M12: 7,924,947 km (0.109 R)
• M13: 9,738,971 km (0.076 R)
• M14: 10,456,592 km (0.112 R)
• M15: 11,456,055 km (0.111 R)
• M16: 11,960,948 km (0.086 R)
• M17: 12,784,335 km (0.11 R)

Planet 4 - Gas Giant

Semi-Major Axis: 3.72 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 576.6

Radius: 11.9

Gravity: 4.07 G

Time & Orbit

Eccentricity (e): 0.153

Orbit Range: 3.15 AU - 4.29 AU

Year: 4562 Days

Day: 7.2 Hours

Environment

Temp: -217 °C

Axial Tilt: 55 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 67,974,905 km

• M1: 168,746 km (0.118 R)
• M2: 622,178 km (0.074 R)
• M3: 2,068,191 km (0.118 R)
• M4: 2,660,449 km (0.08 R)
• M5: 4,782,046 km (0.115 R)
• M6: 6,722,480 km (0.09 R)
• M7: 7,816,040 km (0.073 R)
• M8: 9,296,460 km (0.055 R)
• M9: 11,764,227 km (0.072 R)
• M10: 12,659,869 km (0.12 R)
• M11: 13,248,537 km (0.099 R)
• M12: 16,994,917 km (0.088 R)
• M13: 19,269,702 km (0.066 R)
• M14: 20,380,167 km (0.034 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.75 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 463.2

Radius: 9.7

Gravity: 4.92 G

Time & Orbit

Eccentricity (e): 0.034

Orbit Range: 3.62 AU - 3.88 AU

Year: 4617 Days

Day: 7 Hours

Environment

Temp: -202 °C

Axial Tilt: 31.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 67,974,905 km

• M1: 122,371 km (0.067 R)
• M2: 488,437 km (0.11 R)
• M3: 796,010 km (0.116 R)
• M4: 1,387,520 km (0.064 R)
• M5: 1,733,540 km (0.102 R)
• M6: 2,222,426 km (0.061 R)
• M7: 2,750,806 km (0.056 R)
• M8: 3,209,772 km (0.11 R)
• M9: 4,373,494 km (0.038 R)
• M10: 4,851,010 km (0.116 R)
• M11: 5,362,934 km (0.085 R)
• M12: 6,256,482 km (0.069 R)
• M13: 9,378,889 km (0.112 R)
• M14: 13,611,162 km (0.066 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.42 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 453.6

Radius: 13.7

Gravity: 2.42 G

Time & Orbit

Eccentricity (e): 0.024

Orbit Range: 4.31 AU - 4.53 AU

Year: 5908 Days

Day: 13.5 Hours

Environment

Temp: -222 °C

Axial Tilt: 46.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 67,974,905 km

• M1: 170,392 km (0.063 R)
• M2: 733,329 km (0.025 R)
• M3: 1,512,285 km (0.042 R)
• M4: 2,415,557 km (0.084 R)
• M5: 3,404,848 km (0.098 R)
• M6: 3,959,407 km (0.08 R)
• M7: 5,586,732 km (0.08 R)
• M8: 6,424,780 km (0.073 R)
• M9: 8,276,801 km (0.111 R)
• M10: 11,177,953 km (0.081 R)
• M11: 11,641,706 km (0.083 R)
• M12: 12,070,155 km (0.066 R)
• M13: 12,857,638 km (0.116 R)
• M14: 13,679,379 km (0.073 R)
• M15: 14,156,746 km (0.083 R)
• M16: 17,136,436 km (0.083 R)
• M17: 17,879,339 km (0.043 R)
• M18: 20,719,305 km (0.113 R)
• M19: 22,796,472 km (0.111 R)
• M20: 25,965,553 km (0.065 R)
• M21: 28,980,997 km (0.097 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.75 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 226.8

Radius: 11.3

Gravity: 1.78 G

Time & Orbit

Eccentricity (e): 0.105

Orbit Range: 4.25 AU - 5.25 AU

Year: 6582 Days

Day: 10.7 Hours

Environment

Temp: -224 °C

Axial Tilt: 37.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 67,974,905 km

• M1: 140,622 km (0.108 R)
• M2: 521,049 km (0.063 R)
• M3: 1,822,700 km (0.092 R)
• M4: 2,444,728 km (0.04 R)
• M5: 3,548,611 km (0.099 R)
• M6: 3,961,352 km (0.037 R)
• M7: 4,810,170 km (0.107 R)
• M8: 6,529,199 km (0.079 R)
• M9: 7,379,364 km (0.115 R)
• M10: 8,195,570 km (0.066 R)
• M11: 9,108,715 km (0.099 R)
• M12: 9,531,329 km (0.089 R)
• M13: 11,180,346 km (0.083 R)
• M14: 11,981,293 km (0.028 R)
• M15: 15,088,292 km (0.109 R)
• M16: 15,735,751 km (0.113 R)
• M17: 20,340,074 km (0.11 R)
• M18: 23,338,165 km (0.109 R)
• M19: 24,867,953 km (0.031 R)

Planet 8 - Ice Giant

Semi-Major Axis: 9.99 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 484.7

Radius: 4.6

Gravity: 22.91 G

Time & Orbit

Eccentricity (e): 0.002

Orbit Range: 9.97 AU - 10.01 AU

Year: 20076 Days

Day: 18.7 Hours

Environment

Temp: -237 °C

Axial Tilt: 41.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (33)

Outer Limit: 67,974,905 km

• M1: 58,194 km (0.058 R)
• M2: 295,755 km (0.114 R)
• M3: 494,271 km (0.1 R)
• M4: 1,068,278 km (0.099 R)
• M5: 1,379,292 km (0.053 R)
• M6: 1,662,780 km (0.104 R)
• M7: 1,890,917 km (0.098 R)
• M8: 2,797,929 km (0.11 R)
• M9: 3,696,414 km (0.097 R)
• M10: 3,963,296 km (0.069 R)
• M11: 4,211,330 km (0.073 R)
• M12: 4,946,753 km (0.095 R)
• M13: 5,382,083 km (0.118 R)
• M14: 6,001,867 km (0.105 R)
• M15: 6,287,599 km (0.119 R)
• M16: 16,165,696 km (0.085 R)
• M17: 18,366,879 km (0.114 R)
• M18: 18,795,327 km (0.067 R)
• M19: 24,987,183 km (0.084 R)
• M20: 25,725,598 km (0.119 R)
• M21: 25,939,224 km (0.04 R)
• M22: 26,587,132 km (0.08 R)
• M23: 26,915,051 km (0.119 R)
• M24: 27,356,514 km (0.096 R)
• M25: 30,344,731 km (0.059 R)
• M26: 30,822,846 km (0.074 R)
• M27: 38,751,533 km (0.105 R)
• M28: 46,499,207 km (0.053 R)
• M29: 48,748,561 km (0.086 R)
• M30: 50,901,274 km (0.081 R)
• M31: 56,109,225 km (0.098 R)
• M32: 58,288,118 km (0.056 R)
• M33: 65,559,023 km (0.096 R)

Kuiper Belt

Range: 30 - 51 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 222 - 18,524 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit