🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.34 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.67 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.99

Radius: 1.9

Gravity: 1.38 G

Time & Orbit

Eccentricity (e): 0.012

Orbit Range: 0.66 AU - 0.68 AU

Year: 354 Days

Day: 29.8 Hours

Environment

Temp: -143 °C

Axial Tilt: 47.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 1.08 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 877.6

Radius: 14.9

Gravity: 3.95 G

Time & Orbit

Eccentricity (e): 0.131

Orbit Range: 0.94 AU - 1.22 AU

Year: 725 Days

Day: 7.3 Hours

Environment

Temp: -158 °C

Axial Tilt: 10.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 26,285,400 km

• M1: 185,352 km (0.101 R)
• M2: 1,431,652 km (0.098 R)
• M3: 2,217,040 km (0.086 R)
• M4: 3,425,193 km (0.09 R)
• M5: 5,198,676 km (0.108 R)
• M6: 5,744,857 km (0.112 R)
• M7: 6,561,213 km (0.118 R)
• M8: 7,881,265 km (0.102 R)
• M9: 8,656,182 km (0.074 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.42 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 904.1

Radius: 11.2

Gravity: 7.21 G

Time & Orbit

Eccentricity (e): 0.027

Orbit Range: 1.38 AU - 1.46 AU

Year: 1093 Days

Day: 6.8 Hours

Environment

Temp: -180 °C

Axial Tilt: 3.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 26,285,400 km

• M1: 139,276 km (0.091 R)
• M2: 569,968 km (0.091 R)
• M3: 1,724,115 km (0.058 R)
• M4: 2,093,921 km (0.06 R)
• M5: 2,444,728 km (0.118 R)
• M6: 2,915,513 km (0.062 R)
• M7: 3,507,621 km (0.102 R)
• M8: 4,390,249 km (0.056 R)
• M9: 4,913,243 km (0.099 R)
• M10: 5,498,470 km (0.094 R)
• M11: 6,017,425 km (0.09 R)
• M12: 6,427,921 km (0.104 R)
• M13: 6,905,887 km (0.108 R)
• M14: 7,799,734 km (0.115 R)
• M15: 8,826,574 km (0.104 R)
• M16: 10,451,655 km (0.077 R)
• M17: 11,698,553 km (0.058 R)

Planet 4 - Gas Giant

Semi-Major Axis: 4.99 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 796.7

Radius: 10.7

Gravity: 6.96 G

Time & Orbit

Eccentricity (e): 0.173

Orbit Range: 4.13 AU - 5.85 AU

Year: 7197 Days

Day: 14.8 Hours

Environment

Temp: -221 °C

Axial Tilt: 5.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 26,285,400 km

• M1: 133,890 km (0.094 R)
• M2: 551,119 km (0.06 R)
• M3: 1,179,579 km (0.095 R)
• M4: 1,775,577 km (0.072 R)
• M5: 2,833,533 km (0.102 R)
• M6: 6,208,611 km (0.036 R)
• M7: 6,919,949 km (0.079 R)
• M8: 7,333,736 km (0.114 R)
• M9: 8,589,910 km (0.06 R)
• M10: 10,367,432 km (0.081 R)
• M11: 11,368,541 km (0.105 R)
• M12: 11,733,709 km (0.075 R)
• M13: 12,432,780 km (0.077 R)
• M14: 15,765,671 km (0.075 R)
• M15: 16,952,431 km (0.09 R)
• M16: 18,770,494 km (0.062 R)
• M17: 23,372,124 km (0.084 R)
• M18: 24,048,905 km (0.08 R)
• M19: 27,350,530 km (0.082 R)
• M20: 33,647,553 km (0.064 R)
• M21: 37,417,419 km (0.057 R)

Planet 5 - Gas Giant

Semi-Major Axis: 5.43 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 648.5

Radius: 10.7

Gravity: 5.66 G

Time & Orbit

Eccentricity (e): 0.044

Orbit Range: 5.19 AU - 5.67 AU

Year: 8170 Days

Day: 7.4 Hours

Environment

Temp: -215 °C

Axial Tilt: 39.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 26,285,400 km

• M1: 133,591 km (0.118 R)
• M2: 507,436 km (0.079 R)
• M3: 967,300 km (0.092 R)
• M4: 1,342,641 km (0.104 R)
• M5: 2,454,602 km (0.094 R)
• M6: 3,258,242 km (0.107 R)
• M7: 4,471,780 km (0.058 R)
• M8: 4,810,469 km (0.103 R)
• M9: 5,831,624 km (0.055 R)
• M10: 6,589,038 km (0.117 R)
• M11: 7,142,102 km (0.111 R)
• M12: 8,425,651 km (0.118 R)
• M13: 13,253,324 km (0.066 R)
• M14: 18,059,754 km (0.111 R)
• M15: 19,365,744 km (0.05 R)
• M16: 21,124,715 km (0.058 R)
• M17: 21,600,586 km (0.109 R)
• M18: 25,668,900 km (0.09 R)
• M19: 27,882,799 km (0.071 R)
• M20: 30,221,163 km (0.109 R)
• M21: 30,724,411 km (0.114 R)
• M22: 31,233,043 km (0.091 R)
• M23: 32,898,816 km (0.079 R)
• M24: 35,395,903 km (0.071 R)
• M25: 36,180,395 km (0.099 R)
• M26: 39,553,976 km (0.107 R)
• M27: 40,277,282 km (0.094 R)

Planet 6 - Ice Giant

Semi-Major Axis: 7.63 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 61

Radius: 5.6

Gravity: 1.95 G

Time & Orbit

Eccentricity (e): 0.178

Orbit Range: 6.27 AU - 8.99 AU

Year: 13608 Days

Day: 18.6 Hours

Environment

Temp: -226 °C

Axial Tilt: 29.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 26,285,400 km

• M1: 69,713 km (0.067 R)
• M2: 489,185 km (0.067 R)
• M3: 1,272,479 km (0.052 R)
• M4: 5,001,655 km (0.116 R)
• M5: 7,335,831 km (0.058 R)
• M6: 8,168,044 km (0.111 R)
• M7: 9,611,962 km (0.115 R)
• M8: 11,714,560 km (0.081 R)
• M9: 14,843,849 km (0.105 R)
• M10: 18,057,061 km (0.106 R)
• M11: 18,990,403 km (0.053 R)
• M12: 21,020,745 km (0.1 R)
• M13: 23,922,196 km (0.08 R)
• M14: 24,293,348 km (0.053 R)

Kuiper Belt

Range: 30 - 48 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 210 - 20,008 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit