🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.32 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.63 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.91

Radius: 1.73

Gravity: 1.31 G

Time & Orbit

Eccentricity (e): 0.194

Orbit Range: 0.51 AU - 0.75 AU

Year: 323 Days

Day: 39.4 Hours

Environment

Temp: -135 °C

Axial Tilt: 14.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 1.03 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 198

Radius: 10.1

Gravity: 1.94 G

Time & Orbit

Eccentricity (e): 0.121

Orbit Range: 0.91 AU - 1.15 AU

Year: 675 Days

Day: 7.2 Hours

Environment

Temp: -162 °C

Axial Tilt: 29.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 57,116,045 km

• M1: 125,662 km (0.03 R)
• M2: 751,430 km (0.056 R)
• M3: 1,136,495 km (0.097 R)
• M4: 2,120,550 km (0.11 R)
• M5: 2,494,245 km (0.064 R)
• M6: 2,881,255 km (0.113 R)
• M7: 3,777,496 km (0.057 R)
• M8: 4,197,567 km (0.09 R)
• M9: 4,522,344 km (0.07 R)
• M10: 4,996,718 km (0.119 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.73 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 688.6

Radius: 11.8

Gravity: 4.95 G

Time & Orbit

Eccentricity (e): 0.188

Orbit Range: 1.4 AU - 2.06 AU

Year: 1469 Days

Day: 10.4 Hours

Environment

Temp: -182 °C

Axial Tilt: 11.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 57,116,045 km

• M1: 147,354 km (0.051 R)
• M2: 552,166 km (0.077 R)
• M3: 943,215 km (0.12 R)
• M4: 1,459,178 km (0.094 R)
• M5: 2,493,797 km (0.117 R)
• M6: 3,074,835 km (0.037 R)
• M7: 4,105,863 km (0.084 R)
• M8: 4,919,376 km (0.109 R)
• M9: 5,439,977 km (0.095 R)
• M10: 6,277,875 km (0.076 R)
• M11: 6,815,679 km (0.062 R)
• M12: 7,900,264 km (0.044 R)
• M13: 8,764,191 km (0.072 R)
• M14: 9,343,285 km (0.079 R)
• M15: 9,915,197 km (0.098 R)
• M16: 11,059,471 km (0.104 R)
• M17: 12,029,165 km (0.101 R)
• M18: 12,440,110 km (0.089 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.72 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 46.7

Radius: 14.5

Gravity: 0.22 G

Time & Orbit

Eccentricity (e): 0.18

Orbit Range: 2.23 AU - 3.21 AU

Year: 2896 Days

Day: 10.9 Hours

Environment

Temp: -191 °C

Axial Tilt: 36.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 57,116,045 km

• M1: 180,265 km (0.113 R)
• M2: 705,354 km (0.083 R)
• M3: 2,997,493 km (0.064 R)
• M4: 3,594,687 km (0.087 R)
• M5: 4,255,311 km (0.078 R)
• M6: 5,048,330 km (0.085 R)
• M7: 5,802,153 km (0.106 R)
• M8: 6,525,010 km (0.095 R)
• M9: 7,651,333 km (0.049 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.77 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 122.9

Radius: 8.4

Gravity: 1.74 G

Time & Orbit

Eccentricity (e): 0.012

Orbit Range: 2.74 AU - 2.8 AU

Year: 2977 Days

Day: 10.6 Hours

Environment

Temp: -200 °C

Axial Tilt: 17.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 57,116,045 km

• M1: 106,514 km (0.082 R)
• M2: 389,852 km (0.059 R)
• M3: 657,333 km (0.034 R)
• M4: 1,298,061 km (0.088 R)
• M5: 1,580,053 km (0.105 R)
• M6: 1,853,218 km (0.113 R)
• M7: 2,633,970 km (0.091 R)
• M8: 4,237,808 km (0.067 R)
• M9: 5,144,970 km (0.111 R)
• M10: 5,687,711 km (0.115 R)
• M11: 6,407,277 km (0.104 R)
• M12: 8,414,431 km (0.118 R)
• M13: 8,785,584 km (0.096 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.54 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 742.5

Radius: 9.3

Gravity: 8.58 G

Time & Orbit

Eccentricity (e): 0.047

Orbit Range: 3.37 AU - 3.71 AU

Year: 4301 Days

Day: 8.9 Hours

Environment

Temp: -204 °C

Axial Tilt: 12.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 57,116,045 km

• M1: 121,623 km (0.093 R)
• M2: 573,409 km (0.09 R)
• M3: 1,408,314 km (0.112 R)
• M4: 3,362,362 km (0.081 R)
• M5: 3,735,010 km (0.116 R)
• M6: 5,154,544 km (0.032 R)
• M7: 6,089,980 km (0.093 R)
• M8: 7,101,411 km (0.099 R)
• M9: 7,612,288 km (0.055 R)
• M10: 8,294,454 km (0.092 R)
• M11: 9,056,057 km (0.047 R)
• M12: 10,456,592 km (0.063 R)
• M13: 12,331,203 km (0.118 R)
• M14: 12,820,388 km (0.114 R)
• M15: 13,424,464 km (0.091 R)
• M16: 13,837,653 km (0.061 R)
• M17: 16,733,569 km (0.11 R)
• M18: 19,154,362 km (0.117 R)
• M19: 20,754,909 km (0.029 R)
• M20: 23,917,558 km (0.048 R)
• M21: 26,009,834 km (0.055 R)

Planet 7 - Ice Giant

Semi-Major Axis: 6.82 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 497.4

Radius: 7.2

Gravity: 9.59 G

Time & Orbit

Eccentricity (e): 0.111

Orbit Range: 6.06 AU - 7.58 AU

Year: 11500 Days

Day: 20.8 Hours

Environment

Temp: -216 °C

Axial Tilt: 10.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (26)

Outer Limit: 57,116,045 km

• M1: 94,097 km (0.113 R)
• M2: 325,525 km (0.103 R)
• M3: 585,376 km (0.095 R)
• M4: 1,114,654 km (0.096 R)
• M5: 1,593,068 km (0.064 R)
• M6: 1,977,684 km (0.092 R)
• M7: 2,618,711 km (0.069 R)
• M8: 3,764,331 km (0.116 R)
• M9: 4,305,277 km (0.097 R)
• M10: 5,116,247 km (0.113 R)
• M11: 5,989,600 km (0.119 R)
• M12: 9,539,108 km (0.116 R)
• M13: 9,981,918 km (0.056 R)
• M14: 11,891,834 km (0.095 R)
• M15: 12,873,196 km (0.09 R)
• M16: 14,032,879 km (0.06 R)
• M17: 17,270,177 km (0.111 R)
• M18: 17,633,550 km (0.043 R)
• M19: 18,076,509 km (0.117 R)
• M20: 19,528,057 km (0.101 R)
• M21: 21,138,179 km (0.089 R)
• M22: 26,593,116 km (0.106 R)
• M23: 31,927,327 km (0.073 R)
• M24: 33,701,857 km (0.064 R)
• M25: 35,541,013 km (0.073 R)
• M26: 43,972,200 km (0.115 R)

Planet 8 - Ice Giant

Semi-Major Axis: 7.21 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 741.7

Radius: 4.2

Gravity: 42.05 G

Time & Orbit

Eccentricity (e): 0.183

Orbit Range: 5.89 AU - 8.53 AU

Year: 12500 Days

Day: 19.7 Hours

Environment

Temp: -227 °C

Axial Tilt: 34.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (38)

Outer Limit: 57,116,045 km

• M1: 52,359 km (0.117 R)
• M2: 208,839 km (0.087 R)
• M3: 347,665 km (0.111 R)
• M4: 1,785,301 km (0.045 R)
• M5: 1,922,033 km (0.095 R)
• M6: 2,295,131 km (0.085 R)
• M7: 2,436,501 km (0.107 R)
• M8: 2,919,253 km (0.081 R)
• M9: 3,411,280 km (0.115 R)
• M10: 5,114,751 km (0.086 R)
• M11: 5,864,087 km (0.116 R)
• M12: 6,643,193 km (0.083 R)
• M13: 6,806,853 km (0.114 R)
• M14: 7,057,579 km (0.065 R)
• M15: 7,271,205 km (0.065 R)
• M16: 7,801,379 km (0.09 R)
• M17: 9,391,754 km (0.079 R)
• M18: 11,712,466 km (0.084 R)
• M19: 12,133,135 km (0.111 R)
• M20: 13,196,627 km (0.044 R)
• M21: 15,795,890 km (0.094 R)
• M22: 16,757,953 km (0.079 R)
• M23: 17,680,075 km (0.119 R)
• M24: 19,126,088 km (0.117 R)
• M25: 22,895,805 km (0.098 R)
• M26: 24,319,079 km (0.103 R)
• M27: 24,610,795 km (0.038 R)
• M28: 26,409,410 km (0.084 R)
• M29: 29,598,836 km (0.072 R)
• M30: 33,995,069 km (0.117 R)
• M31: 42,348,913 km (0.082 R)
• M32: 44,197,943 km (0.089 R)
• M33: 46,845,975 km (0.105 R)
• M34: 50,380,973 km (0.034 R)
• M35: 51,651,058 km (0.099 R)
• M36: 54,089,803 km (0.117 R)
• M37: 55,086,274 km (0.081 R)
• M38: 55,757,370 km (0.109 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: 399 - 15,748 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit