🌌 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: 0.52 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.6

Radius: 1.84

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.093

Orbit Range: 0.47 AU - 0.57 AU

Year: 242 Days

Day: 21.6 Hours

Environment

Temp: -123 °C

Axial Tilt: 0.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.57 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.52

Radius: 0.77

Gravity: 0.88 G

Time & Orbit

Eccentricity (e): 0.229

Orbit Range: 0.44 AU - 0.7 AU

Year: 278 Days

Day: 13.5 Hours

Environment

Temp: -124 °C

Axial Tilt: 20.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.71 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 607.3

Radius: 12.5

Gravity: 3.89 G

Time & Orbit

Eccentricity (e): 0.202

Orbit Range: 0.57 AU - 0.85 AU

Year: 386 Days

Day: 13.5 Hours

Environment

Temp: -131 °C

Axial Tilt: 3.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 48,019,042 km

• M1: 155,432 km (0.116 R)
• M2: 737,966 km (0.119 R)
• M3: 1,789,639 km (0.098 R)
• M4: 2,266,857 km (0.081 R)
• M5: 2,991,658 km (0.085 R)
• M6: 4,316,048 km (0.107 R)
• M7: 5,231,288 km (0.102 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.69 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 115

Radius: 8.1

Gravity: 1.75 G

Time & Orbit

Eccentricity (e): 0.191

Orbit Range: 1.37 AU - 2.01 AU

Year: 1419 Days

Day: 6.6 Hours

Environment

Temp: -193 °C

Axial Tilt: 29 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 48,019,042 km

• M1: 100,829 km (0.099 R)
• M2: 353,201 km (0.071 R)
• M3: 738,415 km (0.099 R)
• M4: 1,052,571 km (0.092 R)
• M5: 1,594,564 km (0.076 R)
• M6: 2,158,099 km (0.084 R)
• M7: 2,491,702 km (0.084 R)
• M8: 2,859,414 km (0.087 R)
• M9: 6,433,905 km (0.099 R)
• M10: 7,192,217 km (0.089 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.9 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 105.1

Radius: 10.5

Gravity: 0.95 G

Time & Orbit

Eccentricity (e): 0.153

Orbit Range: 2.46 AU - 3.34 AU

Year: 3189 Days

Day: 13.5 Hours

Environment

Temp: -211 °C

Axial Tilt: 14.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 48,019,042 km

• M1: 131,197 km (0.119 R)
• M2: 584,030 km (0.115 R)
• M3: 917,484 km (0.079 R)
• M4: 1,805,945 km (0.087 R)
• M5: 2,766,962 km (0.104 R)
• M6: 3,135,272 km (0.118 R)
• M7: 3,838,981 km (0.111 R)
• M8: 4,263,988 km (0.031 R)
• M9: 4,796,108 km (0.12 R)
• M10: 5,602,291 km (0.102 R)
• M11: 6,830,938 km (0.06 R)
• M12: 7,824,268 km (0.058 R)
• M13: 8,824,330 km (0.084 R)
• M14: 10,546,051 km (0.025 R)
• M15: 11,212,211 km (0.047 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.79 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 301.4

Radius: 13.6

Gravity: 1.63 G

Time & Orbit

Eccentricity (e): 0.019

Orbit Range: 3.72 AU - 3.86 AU

Year: 4764 Days

Day: 10.2 Hours

Environment

Temp: -216 °C

Axial Tilt: 28.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 48,019,042 km

• M1: 169,345 km (0.095 R)
• M2: 608,415 km (0.079 R)
• M3: 1,242,261 km (0.097 R)
• M4: 1,701,377 km (0.054 R)
• M5: 2,373,819 km (0.06 R)
• M6: 3,454,664 km (0.066 R)
• M7: 4,542,240 km (0.099 R)
• M8: 5,080,493 km (0.036 R)
• M9: 6,257,829 km (0.119 R)
• M10: 7,514,002 km (0.111 R)
• M11: 8,235,961 km (0.119 R)
• M12: 9,003,697 km (0.073 R)
• M13: 9,591,767 km (0.095 R)
• M14: 10,722,876 km (0.061 R)
• M15: 11,724,733 km (0.087 R)
• M16: 12,204,194 km (0.062 R)
• M17: 12,833,553 km (0.07 R)
• M18: 15,885,050 km (0.055 R)
• M19: 16,364,960 km (0.045 R)
• M20: 21,518,008 km (0.05 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.5 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 159.9

Radius: 12

Gravity: 1.11 G

Time & Orbit

Eccentricity (e): 0.08

Orbit Range: 4.14 AU - 4.86 AU

Year: 6164 Days

Day: 7.3 Hours

Environment

Temp: -216 °C

Axial Tilt: 24 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 48,019,042 km

• M1: 149,448 km (0.103 R)
• M2: 571,613 km (0.099 R)
• M3: 1,721,871 km (0.062 R)
• M4: 2,496,639 km (0.062 R)
• M5: 3,719,302 km (0.097 R)
• M6: 5,062,542 km (0.096 R)
• M7: 7,213,460 km (0.029 R)
• M8: 9,726,704 km (0.074 R)
• M9: 10,774,188 km (0.111 R)
• M10: 12,417,970 km (0.104 R)
• M11: 13,138,583 km (0.095 R)
• M12: 14,126,527 km (0.116 R)
• M13: 14,515,631 km (0.112 R)
• M14: 15,520,031 km (0.095 R)

Planet 8 - Gas Giant

Semi-Major Axis: 4.92 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 269.3

Radius: 11.5

Gravity: 2.04 G

Time & Orbit

Eccentricity (e): 0.058

Orbit Range: 4.63 AU - 5.21 AU

Year: 7046 Days

Day: 8.7 Hours

Environment

Temp: -206 °C

Axial Tilt: 40 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 48,019,042 km

• M1: 143,165 km (0.094 R)
• M2: 502,050 km (0.098 R)
• M3: 1,083,837 km (0.034 R)
• M4: 1,455,288 km (0.114 R)
• M5: 2,817,975 km (0.115 R)
• M6: 4,474,622 km (0.027 R)
• M7: 5,185,361 km (0.106 R)
• M8: 5,824,294 km (0.087 R)
• M9: 6,640,350 km (0.035 R)
• M10: 7,192,366 km (0.07 R)
• M11: 8,059,585 km (0.075 R)
• M12: 10,382,092 km (0.112 R)
• M13: 11,306,906 km (0.088 R)
• M14: 12,238,153 km (0.071 R)
• M15: 13,473,083 km (0.07 R)
• M16: 13,989,645 km (0.09 R)
• M17: 14,898,302 km (0.107 R)
• M18: 15,959,849 km (0.11 R)
• M19: 18,046,290 km (0.095 R)
• M20: 19,578,173 km (0.085 R)
• M21: 25,939,972 km (0.114 R)
• M22: 27,392,268 km (0.064 R)

Planet 9 - Ice Giant

Semi-Major Axis: 8.09 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 312

Radius: 6.5

Gravity: 7.38 G

Time & Orbit

Eccentricity (e): 0.085

Orbit Range: 7.4 AU - 8.78 AU

Year: 14857 Days

Day: 20.3 Hours

Environment

Temp: -231 °C

Axial Tilt: 6.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (34)

Outer Limit: 48,019,042 km

• M1: 85,570 km (0.048 R)
• M2: 329,115 km (0.083 R)
• M3: 648,956 km (0.113 R)
• M4: 952,938 km (0.095 R)
• M5: 1,349,522 km (0.114 R)
• M6: 1,835,117 km (0.104 R)
• M7: 2,225,568 km (0.111 R)
• M8: 2,588,642 km (0.112 R)
• M9: 2,880,956 km (0.108 R)
• M10: 3,336,631 km (0.03 R)
• M11: 3,918,866 km (0.036 R)
• M12: 6,145,331 km (0.043 R)
• M13: 6,628,831 km (0.104 R)
• M14: 7,504,278 km (0.058 R)
• M15: 7,883,808 km (0.05 R)
• M16: 11,231,659 km (0.065 R)
• M17: 12,647,602 km (0.039 R)
• M18: 13,245,844 km (0.104 R)
• M19: 13,613,855 km (0.082 R)
• M20: 13,988,598 km (0.058 R)
• M21: 15,692,368 km (0.09 R)
• M22: 16,313,199 km (0.083 R)
• M23: 18,349,076 km (0.091 R)
• M24: 20,143,353 km (0.084 R)
• M25: 21,041,539 km (0.072 R)
• M26: 21,291,068 km (0.106 R)
• M27: 27,293,533 km (0.111 R)
• M28: 31,214,942 km (0.107 R)
• M29: 32,638,067 km (0.098 R)
• M30: 35,261,265 km (0.054 R)
• M31: 36,324,906 km (0.077 R)
• M32: 38,021,645 km (0.107 R)
• M33: 38,889,612 km (0.066 R)
• M34: 47,303,595 km (0.087 R)

Kuiper Belt

Range: 30 - 50 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 270 - 10,954 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit