🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.28 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.56 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.3

Radius: 1.11

Gravity: 1.06 G

Time & Orbit

Eccentricity (e): 0.087

Orbit Range: 0.51 AU - 0.61 AU

Year: 271 Days

Day: 19 Hours

Environment

Temp: -122 °C

Axial Tilt: 13.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.68 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 442.1

Radius: 12.6

Gravity: 2.78 G

Time & Orbit

Eccentricity (e): 0.178

Orbit Range: 0.56 AU - 0.8 AU

Year: 362 Days

Day: 5.8 Hours

Environment

Temp: -127 °C

Axial Tilt: 32.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 56,896,292 km

• M1: 156,779 km (0.071 R)
• M2: 677,978 km (0.117 R)
• M3: 1,347,578 km (0.075 R)
• M4: 2,355,867 km (0.076 R)
• M5: 2,806,755 km (0.083 R)
• M6: 3,368,645 km (0.101 R)
• M7: 3,980,799 km (0.073 R)
• M8: 4,520,399 km (0.097 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.99 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 801.4

Radius: 12.4

Gravity: 5.21 G

Time & Orbit

Eccentricity (e): 0.24

Orbit Range: 0.75 AU - 1.23 AU

Year: 636 Days

Day: 11.9 Hours

Environment

Temp: -165 °C

Axial Tilt: 31.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 56,896,292 km

• M1: 154,235 km (0.072 R)
• M2: 590,762 km (0.034 R)
• M3: 994,826 km (0.07 R)
• M4: 1,383,332 km (0.05 R)
• M5: 1,775,278 km (0.073 R)
• M6: 2,291,989 km (0.089 R)
• M7: 3,015,295 km (0.106 R)
• M8: 3,510,912 km (0.053 R)
• M9: 4,506,337 km (0.066 R)
• M10: 5,070,470 km (0.116 R)
• M11: 5,533,326 km (0.099 R)
• M12: 6,004,859 km (0.085 R)
• M13: 6,647,681 km (0.082 R)
• M14: 8,023,981 km (0.064 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.82 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 655.5

Radius: 8.5

Gravity: 9.07 G

Time & Orbit

Eccentricity (e): 0.052

Orbit Range: 2.67 AU - 2.97 AU

Year: 3058 Days

Day: 13.1 Hours

Environment

Temp: -191 °C

Axial Tilt: 6.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 56,896,292 km

• M1: 107,860 km (0.098 R)
• M2: 594,352 km (0.104 R)
• M3: 1,177,485 km (0.103 R)
• M4: 2,141,793 km (0.118 R)
• M5: 3,245,825 km (0.118 R)
• M6: 3,932,928 km (0.042 R)
• M7: 4,576,648 km (0.109 R)
• M8: 6,294,630 km (0.112 R)
• M9: 6,872,676 km (0.117 R)
• M10: 11,569,002 km (0.111 R)
• M11: 14,008,345 km (0.052 R)
• M12: 14,643,088 km (0.104 R)
• M13: 15,708,973 km (0.062 R)
• M14: 17,431,144 km (0.119 R)

Planet 5 - Gas Giant

Semi-Major Axis: 4.03 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 200.6

Radius: 12.3

Gravity: 1.33 G

Time & Orbit

Eccentricity (e): 0.03

Orbit Range: 3.91 AU - 4.15 AU

Year: 5224 Days

Day: 13.9 Hours

Environment

Temp: -210 °C

Axial Tilt: 33.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 56,896,292 km

• M1: 153,188 km (0.105 R)
• M2: 556,354 km (0.1 R)
• M3: 1,093,261 km (0.09 R)
• M4: 1,544,748 km (0.085 R)
• M5: 2,638,458 km (0.055 R)
• M6: 3,118,368 km (0.071 R)
• M7: 3,771,063 km (0.117 R)
• M8: 4,213,723 km (0.066 R)
• M9: 4,943,013 km (0.12 R)
• M10: 5,651,957 km (0.073 R)
• M11: 7,333,587 km (0.104 R)
• M12: 7,930,034 km (0.077 R)
• M13: 8,902,420 km (0.112 R)
• M14: 12,386,105 km (0.094 R)
• M15: 13,694,039 km (0.105 R)
• M16: 14,844,597 km (0.116 R)
• M17: 15,800,228 km (0.069 R)
• M18: 20,400,662 km (0.063 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.13 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 819.1

Radius: 10.2

Gravity: 7.87 G

Time & Orbit

Eccentricity (e): 0.058

Orbit Range: 3.89 AU - 4.37 AU

Year: 5419 Days

Day: 6.3 Hours

Environment

Temp: -217 °C

Axial Tilt: 24.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (26)

Outer Limit: 56,896,292 km

• M1: 126,859 km (0.049 R)
• M2: 485,595 km (0.104 R)
• M3: 906,713 km (0.105 R)
• M4: 1,534,575 km (0.087 R)
• M5: 1,889,272 km (0.086 R)
• M6: 2,694,856 km (0.089 R)
• M7: 3,536,194 km (0.107 R)
• M8: 4,066,369 km (0.065 R)
• M9: 4,864,025 km (0.103 R)
• M10: 5,855,261 km (0.113 R)
• M11: 6,941,192 km (0.113 R)
• M12: 7,259,536 km (0.077 R)
• M13: 10,488,307 km (0.055 R)
• M14: 13,945,813 km (0.091 R)
• M15: 15,870,090 km (0.098 R)
• M16: 16,737,758 km (0.042 R)
• M17: 17,311,914 km (0.113 R)
• M18: 17,833,263 km (0.105 R)
• M19: 18,634,958 km (0.119 R)
• M20: 18,976,041 km (0.084 R)
• M21: 21,406,857 km (0.08 R)
• M22: 25,264,986 km (0.088 R)
• M23: 26,105,576 km (0.09 R)
• M24: 26,878,100 km (0.096 R)
• M25: 29,378,778 km (0.098 R)
• M26: 32,324,061 km (0.112 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.12 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 580.4

Radius: 12.5

Gravity: 3.71 G

Time & Orbit

Eccentricity (e): 0.12

Orbit Range: 4.51 AU - 5.73 AU

Year: 7480 Days

Day: 10.3 Hours

Environment

Temp: -209 °C

Axial Tilt: 32.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 56,896,292 km

• M1: 156,330 km (0.109 R)
• M2: 657,183 km (0.054 R)
• M3: 2,664,787 km (0.118 R)
• M4: 5,823,097 km (0.063 R)
• M5: 7,380,112 km (0.109 R)
• M6: 7,799,734 km (0.118 R)
• M7: 10,377,155 km (0.085 R)
• M8: 11,551,648 km (0.119 R)
• M9: 14,105,882 km (0.039 R)
• M10: 15,732,610 km (0.11 R)
• M11: 17,280,648 km (0.103 R)
• M12: 25,955,081 km (0.077 R)
• M13: 28,762,285 km (0.07 R)
• M14: 31,665,980 km (0.075 R)
• M15: 32,573,889 km (0.103 R)

Planet 8 - Ice Giant

Semi-Major Axis: 10.95 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 209.3

Radius: 7.1

Gravity: 4.15 G

Time & Orbit

Eccentricity (e): 0.139

Orbit Range: 9.43 AU - 12.47 AU

Year: 23396 Days

Day: 15.2 Hours

Environment

Temp: -225 °C

Axial Tilt: 19 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 56,896,292 km

• M1: 88,712 km (0.044 R)
• M2: 933,940 km (0.092 R)
• M3: 1,244,205 km (0.075 R)
• M4: 1,488,200 km (0.109 R)
• M5: 1,780,663 km (0.101 R)
• M6: 2,002,667 km (0.105 R)
• M7: 2,360,654 km (0.099 R)
• M8: 2,919,402 km (0.065 R)
• M9: 3,642,858 km (0.077 R)
• M10: 4,700,066 km (0.096 R)
• M11: 5,948,759 km (0.092 R)
• M12: 6,176,447 km (0.101 R)
• M13: 7,404,496 km (0.062 R)
• M14: 12,481,998 km (0.102 R)
• M15: 14,702,628 km (0.078 R)
• M16: 15,402,896 km (0.089 R)
• M17: 16,272,359 km (0.087 R)
• M18: 18,831,530 km (0.107 R)
• M19: 22,187,608 km (0.072 R)
• M20: 25,223,099 km (0.105 R)
• M21: 33,279,842 km (0.054 R)
• M22: 36,221,384 km (0.026 R)
• M23: 40,406,834 km (0.076 R)
• M24: 43,321,898 km (0.092 R)
• M25: 44,179,842 km (0.084 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: 322 - 18,005 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit