🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.31 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.61 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.88

Radius: 1.72

Gravity: 1.31 G

Time & Orbit

Eccentricity (e): 0.147

Orbit Range: 0.52 AU - 0.7 AU

Year: 313 Days

Day: 33 Hours

Environment

Temp: -132 °C

Axial Tilt: 22.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.79 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 575.8

Radius: 11.8

Gravity: 4.14 G

Time & Orbit

Eccentricity (e): 0.192

Orbit Range: 0.64 AU - 0.94 AU

Year: 461 Days

Day: 10.2 Hours

Environment

Temp: -148 °C

Axial Tilt: 48.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 44,582,355 km

• M1: 146,756 km (0.12 R)
• M2: 938,876 km (0.115 R)
• M3: 1,328,279 km (0.093 R)
• M4: 1,731,745 km (0.047 R)
• M5: 2,115,314 km (0.09 R)
• M6: 2,575,627 km (0.083 R)
• M7: 3,102,510 km (0.063 R)
• M8: 3,505,078 km (0.104 R)
• M9: 4,021,191 km (0.053 R)
• M10: 4,733,875 km (0.102 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.92 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 139.4

Radius: 12.7

Gravity: 0.86 G

Time & Orbit

Eccentricity (e): 0.082

Orbit Range: 0.84 AU - 1 AU

Year: 579 Days

Day: 12.7 Hours

Environment

Temp: -153 °C

Axial Tilt: 11.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 44,582,355 km

• M1: 157,975 km (0.104 R)
• M2: 742,305 km (0.075 R)
• M3: 1,149,360 km (0.077 R)
• M4: 1,667,418 km (0.044 R)
• M5: 2,364,544 km (0.119 R)
• M6: 2,897,262 km (0.117 R)
• M7: 3,413,973 km (0.065 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.98 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 451.3

Radius: 9.7

Gravity: 4.8 G

Time & Orbit

Eccentricity (e): 0.058

Orbit Range: 0.92 AU - 1.04 AU

Year: 636 Days

Day: 13.2 Hours

Environment

Temp: -158 °C

Axial Tilt: 23.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 44,582,355 km

• M1: 120,576 km (0.101 R)
• M2: 438,023 km (0.118 R)
• M3: 747,840 km (0.085 R)
• M4: 1,109,119 km (0.111 R)
• M5: 1,580,651 km (0.116 R)
• M6: 2,031,689 km (0.076 R)
• M7: 2,417,801 km (0.101 R)
• M8: 2,941,244 km (0.098 R)
• M9: 3,326,907 km (0.064 R)
• M10: 3,641,511 km (0.099 R)
• M11: 4,157,923 km (0.03 R)
• M12: 4,753,622 km (0.094 R)
• M13: 5,121,334 km (0.115 R)
• M14: 5,735,134 km (0.05 R)
• M15: 6,041,660 km (0.113 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.26 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 212.6

Radius: 8.3

Gravity: 3.09 G

Time & Orbit

Eccentricity (e): 0.209

Orbit Range: 1 AU - 1.52 AU

Year: 928 Days

Day: 5.4 Hours

Environment

Temp: -177 °C

Axial Tilt: 39.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 44,582,355 km

• M1: 103,223 km (0.116 R)
• M2: 396,135 km (0.09 R)
• M3: 732,282 km (0.077 R)
• M4: 1,078,002 km (0.109 R)
• M5: 1,407,417 km (0.102 R)
• M6: 1,740,571 km (0.085 R)
• M7: 2,171,263 km (0.092 R)
• M8: 2,681,991 km (0.096 R)
• M9: 3,000,335 km (0.119 R)
• M10: 3,833,745 km (0.051 R)
• M11: 4,341,181 km (0.102 R)
• M12: 4,657,431 km (0.098 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.73 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 701.8

Radius: 8.2

Gravity: 10.44 G

Time & Orbit

Eccentricity (e): 0.152

Orbit Range: 2.32 AU - 3.14 AU

Year: 2959 Days

Day: 5.7 Hours

Environment

Temp: -209 °C

Axial Tilt: 35.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 44,582,355 km

• M1: 102,026 km (0.047 R)
• M2: 372,050 km (0.108 R)
• M3: 876,494 km (0.089 R)
• M4: 1,388,418 km (0.116 R)
• M5: 1,933,552 km (0.094 R)
• M6: 2,207,915 km (0.099 R)
• M7: 2,463,727 km (0.111 R)
• M8: 2,852,233 km (0.109 R)
• M9: 3,122,108 km (0.073 R)
• M10: 4,204,299 km (0.086 R)
• M11: 6,048,242 km (0.074 R)
• M12: 6,906,036 km (0.092 R)
• M13: 10,711,208 km (0.073 R)
• M14: 12,941,113 km (0.112 R)
• M15: 13,216,822 km (0.036 R)
• M16: 15,156,807 km (0.026 R)
• M17: 15,670,078 km (0.047 R)
• M18: 18,181,228 km (0.029 R)
• M19: 20,510,766 km (0.092 R)
• M20: 21,138,628 km (0.059 R)

Planet 7 - Ice Giant

Semi-Major Axis: 7.49 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 304.8

Radius: 4.4

Gravity: 15.74 G

Time & Orbit

Eccentricity (e): 0.119

Orbit Range: 6.6 AU - 8.38 AU

Year: 13447 Days

Day: 20.7 Hours

Environment

Temp: -234 °C

Axial Tilt: 44.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (26)

Outer Limit: 44,582,355 km

• M1: 54,902 km (0.111 R)
• M2: 199,115 km (0.119 R)
• M3: 410,945 km (0.062 R)
• M4: 561,890 km (0.095 R)
• M5: 828,323 km (0.103 R)
• M6: 1,541,307 km (0.119 R)
• M7: 3,545,769 km (0.103 R)
• M8: 4,445,600 km (0.057 R)
• M9: 5,357,698 km (0.059 R)
• M10: 7,462,989 km (0.112 R)
• M11: 9,293,020 km (0.09 R)
• M12: 9,720,870 km (0.082 R)
• M13: 12,226,784 km (0.117 R)
• M14: 12,798,098 km (0.11 R)
• M15: 13,447,053 km (0.098 R)
• M16: 13,871,163 km (0.101 R)
• M17: 14,874,067 km (0.072 R)
• M18: 16,813,454 km (0.03 R)
• M19: 21,430,194 km (0.088 R)
• M20: 21,925,363 km (0.085 R)
• M21: 23,110,328 km (0.047 R)
• M22: 30,089,817 km (0.087 R)
• M23: 36,803,021 km (0.09 R)
• M24: 41,963,848 km (0.113 R)
• M25: 42,479,063 km (0.079 R)
• M26: 43,785,651 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: 219 - 14,363 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit