🌌 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: 0.53 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.08

Radius: 1.34

Gravity: 1.16 G

Time & Orbit

Eccentricity (e): 0.083

Orbit Range: 0.49 AU - 0.57 AU

Year: 249 Days

Day: 24.1 Hours

Environment

Temp: -122 °C

Axial Tilt: 43.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.56 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.33

Radius: 1.62

Gravity: 1.27 G

Time & Orbit

Eccentricity (e): 0.209

Orbit Range: 0.44 AU - 0.68 AU

Year: 271 Days

Day: 41.8 Hours

Environment

Temp: -124 °C

Axial Tilt: 24 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 36,781,403 km

• M1: 37,998 km (0.036 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.87 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 183.5

Radius: 9.2

Gravity: 2.17 G

Time & Orbit

Eccentricity (e): 0.224

Orbit Range: 0.68 AU - 1.06 AU

Year: 524 Days

Day: 10.3 Hours

Environment

Temp: -157 °C

Axial Tilt: 29 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 36,781,403 km

• M1: 115,490 km (0.086 R)
• M2: 454,030 km (0.03 R)
• M3: 1,197,980 km (0.039 R)
• M4: 2,075,072 km (0.096 R)
• M5: 2,747,066 km (0.088 R)
• M6: 3,657,818 km (0.104 R)
• M7: 4,201,456 km (0.083 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.13 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 986.6

Radius: 8

Gravity: 15.42 G

Time & Orbit

Eccentricity (e): 0.018

Orbit Range: 1.11 AU - 1.15 AU

Year: 776 Days

Day: 6.2 Hours

Environment

Temp: -172 °C

Axial Tilt: 24.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 36,781,403 km

• M1: 100,979 km (0.108 R)
• M2: 452,833 km (0.073 R)
• M3: 771,177 km (0.092 R)
• M4: 1,117,795 km (0.078 R)
• M5: 1,720,824 km (0.027 R)
• M6: 2,040,515 km (0.099 R)
• M7: 2,666,133 km (0.101 R)
• M8: 3,123,304 km (0.091 R)
• M9: 3,385,101 km (0.065 R)
• M10: 3,736,955 km (0.045 R)
• M11: 4,583,230 km (0.111 R)
• M12: 5,014,670 km (0.096 R)
• M13: 5,611,566 km (0.117 R)
• M14: 6,276,379 km (0.097 R)
• M15: 6,628,083 km (0.097 R)
• M16: 7,086,002 km (0.094 R)
• M17: 7,787,467 km (0.118 R)
• M18: 8,065,270 km (0.081 R)
• M19: 8,481,302 km (0.103 R)
• M20: 8,966,298 km (0.092 R)
• M21: 9,583,988 km (0.032 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.14 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 996.9

Radius: 13.6

Gravity: 5.39 G

Time & Orbit

Eccentricity (e): 0.113

Orbit Range: 1.01 AU - 1.27 AU

Year: 786 Days

Day: 14.4 Hours

Environment

Temp: -161 °C

Axial Tilt: 37.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 36,781,403 km

• M1: 246,388 km (0.072 R)
• M2: 736,919 km (0.083 R)
• M3: 1,167,013 km (0.061 R)
• M4: 1,781,411 km (0.082 R)
• M5: 2,253,692 km (0.064 R)
• M6: 2,785,812 km (0.115 R)
• M7: 3,249,715 km (0.092 R)
• M8: 4,555,255 km (0.063 R)
• M9: 5,872,913 km (0.041 R)
• M10: 6,937,152 km (0.08 R)
• M11: 8,049,562 km (0.115 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.17 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 781.6

Radius: 11.4

Gravity: 6.01 G

Time & Orbit

Eccentricity (e): 0.027

Orbit Range: 1.14 AU - 1.2 AU

Year: 817 Days

Day: 7.7 Hours

Environment

Temp: -176 °C

Axial Tilt: 20.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 36,781,403 km

• M1: 141,819 km (0.11 R)
• M2: 510,129 km (0.095 R)
• M3: 906,413 km (0.108 R)
• M4: 1,580,352 km (0.064 R)
• M5: 2,128,479 km (0.116 R)
• M6: 2,728,516 km (0.116 R)
• M7: 3,247,022 km (0.073 R)
• M8: 3,609,198 km (0.111 R)
• M9: 5,472,889 km (0.115 R)
• M10: 5,867,228 km (0.085 R)
• M11: 6,690,914 km (0.081 R)
• M12: 7,399,410 km (0.079 R)
• M13: 8,056,593 km (0.075 R)
• M14: 8,646,757 km (0.099 R)

Planet 7 - Gas Giant

Semi-Major Axis: 1.46 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 999.5

Radius: 12.8

Gravity: 6.1 G

Time & Orbit

Eccentricity (e): 0.11

Orbit Range: 1.3 AU - 1.62 AU

Year: 1139 Days

Day: 10.8 Hours

Environment

Temp: -185 °C

Axial Tilt: 44 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 36,781,403 km

• M1: 159,172 km (0.066 R)
• M2: 646,263 km (0.079 R)
• M3: 1,060,948 km (0.081 R)
• M4: 2,058,766 km (0.049 R)
• M5: 2,620,655 km (0.083 R)
• M6: 3,151,429 km (0.096 R)
• M7: 3,819,234 km (0.055 R)
• M8: 5,209,447 km (0.087 R)
• M9: 5,785,099 km (0.079 R)
• M10: 6,332,179 km (0.101 R)
• M11: 8,352,648 km (0.045 R)
• M12: 8,785,883 km (0.116 R)
• M13: 9,634,851 km (0.108 R)
• M14: 11,009,805 km (0.112 R)
• M15: 11,425,837 km (0.05 R)
• M16: 12,105,908 km (0.116 R)

Planet 8 - Gas Giant

Semi-Major Axis: 1.66 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 384

Radius: 9.8

Gravity: 4 G

Time & Orbit

Eccentricity (e): 0.017

Orbit Range: 1.63 AU - 1.69 AU

Year: 1381 Days

Day: 6.4 Hours

Environment

Temp: -185 °C

Axial Tilt: 35.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 36,781,403 km

• M1: 121,922 km (0.103 R)
• M2: 535,710 km (0.112 R)
• M3: 906,264 km (0.085 R)
• M4: 1,539,212 km (0.091 R)
• M5: 1,848,880 km (0.098 R)
• M6: 2,585,350 km (0.105 R)
• M7: 3,841,823 km (0.069 R)
• M8: 4,300,041 km (0.097 R)
• M9: 4,703,656 km (0.093 R)
• M10: 5,190,149 km (0.075 R)
• M11: 5,607,377 km (0.116 R)
• M12: 5,918,840 km (0.038 R)
• M13: 6,691,363 km (0.105 R)
• M14: 7,307,557 km (0.119 R)
• M15: 9,443,066 km (0.076 R)
• M16: 10,157,396 km (0.084 R)

Planet 9 - Ice Giant

Semi-Major Axis: 8.59 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 147.9

Radius: 6.4

Gravity: 3.61 G

Time & Orbit

Eccentricity (e): 0.195

Orbit Range: 6.91 AU - 10.27 AU

Year: 16256 Days

Day: 19.3 Hours

Environment

Temp: -217 °C

Axial Tilt: 21.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 36,781,403 km

• M1: 90,956 km (0.1 R)
• M2: 913,744 km (0.109 R)
• M3: 1,140,235 km (0.094 R)
• M4: 1,544,598 km (0.108 R)
• M5: 3,413,524 km (0.116 R)
• M6: 4,605,969 km (0.104 R)
• M7: 5,039,055 km (0.064 R)
• M8: 10,529,147 km (0.069 R)
• M9: 13,572,117 km (0.103 R)
• M10: 15,897,915 km (0.118 R)
• M11: 19,715,653 km (0.068 R)
• M12: 20,165,943 km (0.086 R)
• M13: 22,439,232 km (0.075 R)
• M14: 31,379,350 km (0.056 R)

Planet 10 - Ice Giant

Semi-Major Axis: 9.26 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 93.5

Radius: 6.7

Gravity: 2.08 G

Time & Orbit

Eccentricity (e): 0.17

Orbit Range: 7.69 AU - 10.83 AU

Year: 18194 Days

Day: 22.9 Hours

Environment

Temp: -238 °C

Axial Tilt: 27.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 36,781,403 km

• M1: 83,326 km (0.049 R)
• M2: 399,426 km (0.032 R)
• M3: 1,402,181 km (0.106 R)
• M4: 2,145,084 km (0.062 R)
• M5: 2,379,504 km (0.11 R)
• M6: 4,348,212 km (0.105 R)
• M7: 5,243,405 km (0.099 R)
• M8: 6,155,653 km (0.089 R)
• M9: 8,999,808 km (0.112 R)
• M10: 10,395,855 km (0.111 R)
• M11: 10,681,886 km (0.104 R)
• M12: 12,086,610 km (0.045 R)
• M13: 13,162,518 km (0.089 R)
• M14: 15,751,908 km (0.095 R)
• M15: 22,225,157 km (0.103 R)
• M16: 24,668,240 km (0.068 R)
• M17: 27,014,982 km (0.109 R)
• M18: 29,222,448 km (0.073 R)
• M19: 29,792,566 km (0.106 R)

Kuiper Belt

Range: 30 - 58 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 390 - 16,277 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit