🌌 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: 1.65

Radius: 1.22

Gravity: 1.11 G

Time & Orbit

Eccentricity (e): 0.196

Orbit Range: 0.49 AU - 0.73 AU

Year: 308 Days

Day: 18.7 Hours

Environment

Temp: -128 °C

Axial Tilt: 33.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 23,404,517 km

• M1: 79,137 km (0.041 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.96 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 858.5

Radius: 10.6

Gravity: 7.64 G

Time & Orbit

Eccentricity (e): 0.061

Orbit Range: 0.9 AU - 1.02 AU

Year: 607 Days

Day: 7.4 Hours

Environment

Temp: -155 °C

Axial Tilt: 3.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 23,404,517 km

• M1: 131,796 km (0.088 R)
• M2: 559,346 km (0.027 R)
• M3: 926,460 km (0.119 R)
• M4: 1,334,413 km (0.077 R)
• M5: 2,003,415 km (0.051 R)
• M6: 3,050,749 km (0.081 R)
• M7: 3,431,626 km (0.094 R)
• M8: 3,773,157 km (0.118 R)
• M9: 4,243,643 km (0.098 R)
• M10: 5,249,688 km (0.103 R)
• M11: 6,030,141 km (0.055 R)
• M12: 6,864,747 km (0.075 R)
• M13: 7,455,359 km (0.11 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.24 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 826.4

Radius: 14.1

Gravity: 4.16 G

Time & Orbit

Eccentricity (e): 0.223

Orbit Range: 0.96 AU - 1.52 AU

Year: 892 Days

Day: 14.5 Hours

Environment

Temp: -159 °C

Axial Tilt: 18.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 23,404,517 km

• M1: 177,722 km (0.104 R)
• M2: 820,694 km (0.119 R)
• M3: 1,411,456 km (0.101 R)
• M4: 2,138,202 km (0.077 R)
• M5: 4,052,756 km (0.115 R)
• M6: 5,091,115 km (0.083 R)
• M7: 5,856,607 km (0.056 R)
• M8: 6,926,082 km (0.097 R)
• M9: 7,374,427 km (0.096 R)
• M10: 8,567,769 km (0.12 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.67 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 339.2

Radius: 13.5

Gravity: 1.86 G

Time & Orbit

Eccentricity (e): 0.026

Orbit Range: 1.63 AU - 1.71 AU

Year: 1393 Days

Day: 13.5 Hours

Environment

Temp: -190 °C

Axial Tilt: 47.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 23,404,517 km

• M1: 167,998 km (0.049 R)
• M2: 597,643 km (0.107 R)
• M3: 1,228,797 km (0.113 R)
• M4: 2,226,764 km (0.103 R)
• M5: 2,870,334 km (0.078 R)
• M6: 3,361,913 km (0.111 R)
• M7: 4,164,655 km (0.088 R)
• M8: 4,708,892 km (0.031 R)
• M9: 5,534,972 km (0.071 R)
• M10: 6,173,455 km (0.104 R)
• M11: 6,723,676 km (0.112 R)
• M12: 8,025,028 km (0.09 R)
• M13: 8,708,541 km (0.101 R)
• M14: 9,865,381 km (0.082 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.26 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 904.3

Radius: 11.9

Gravity: 6.39 G

Time & Orbit

Eccentricity (e): 0.127

Orbit Range: 2.85 AU - 3.67 AU

Year: 3801 Days

Day: 5.5 Hours

Environment

Temp: -203 °C

Axial Tilt: 35.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 23,404,517 km

• M1: 148,102 km (0.099 R)
• M2: 874,250 km (0.107 R)
• M3: 1,460,524 km (0.111 R)
• M4: 2,437,996 km (0.098 R)
• M5: 3,317,482 km (0.115 R)
• M6: 4,373,643 km (0.08 R)
• M7: 5,957,436 km (0.09 R)
• M8: 6,530,994 km (0.074 R)
• M9: 7,274,196 km (0.088 R)
• M10: 8,217,860 km (0.116 R)
• M11: 8,891,050 km (0.039 R)
• M12: 9,969,352 km (0.09 R)
• M13: 11,770,959 km (0.062 R)
• M14: 12,626,958 km (0.099 R)
• M15: 13,170,148 km (0.088 R)
• M16: 15,057,774 km (0.081 R)
• M17: 15,444,783 km (0.067 R)
• M18: 16,645,755 km (0.07 R)
• M19: 17,239,210 km (0.114 R)
• M20: 18,155,646 km (0.064 R)
• M21: 19,953,065 km (0.114 R)
• M22: 20,353,090 km (0.097 R)
• M23: 21,585,626 km (0.096 R)
• M24: 23,085,794 km (0.109 R)

Planet 6 - Ice Giant

Semi-Major Axis: 7.65 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 265.9

Radius: 6.5

Gravity: 6.29 G

Time & Orbit

Eccentricity (e): 0.183

Orbit Range: 6.25 AU - 9.05 AU

Year: 13662 Days

Day: 19.3 Hours

Environment

Temp: -233 °C

Axial Tilt: 28.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 23,404,517 km

• M1: 80,783 km (0.071 R)
• M2: 576,849 km (0.098 R)
• M3: 1,311,973 km (0.04 R)
• M4: 1,907,373 km (0.062 R)
• M5: 2,187,570 km (0.086 R)
• M6: 5,229,642 km (0.117 R)
• M7: 5,452,094 km (0.114 R)
• M8: 5,848,230 km (0.116 R)
• M9: 6,697,796 km (0.034 R)
• M10: 7,036,785 km (0.108 R)
• M11: 10,027,396 km (0.102 R)
• M12: 18,208,754 km (0.103 R)
• M13: 19,393,868 km (0.059 R)
• M14: 22,413,052 km (0.083 R)
• M15: 23,946,879 km (0.108 R)
• M16: 25,097,137 km (0.114 R)
• M17: 30,577,954 km (0.058 R)
• M18: 30,990,097 km (0.101 R)
• M19: 32,568,653 km (0.112 R)
• M20: 33,541,039 km (0.106 R)
• M21: 39,663,332 km (0.09 R)

Planet 7 - Ice Giant

Semi-Major Axis: 9.23 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 81.1

Radius: 4.4

Gravity: 4.19 G

Time & Orbit

Eccentricity (e): 0.021

Orbit Range: 9.04 AU - 9.42 AU

Year: 18106 Days

Day: 18.7 Hours

Environment

Temp: -229 °C

Axial Tilt: 32.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 23,404,517 km

• M1: 174,880 km (0.076 R)
• M2: 426,504 km (0.056 R)
• M3: 711,787 km (0.072 R)
• M4: 1,766,302 km (0.116 R)
• M5: 3,408,587 km (0.101 R)
• M6: 4,186,945 km (0.108 R)
• M7: 4,444,553 km (0.098 R)
• M8: 7,632,932 km (0.088 R)
• M9: 10,601,253 km (0.105 R)
• M10: 13,084,578 km (0.118 R)
• M11: 16,241,691 km (0.059 R)
• M12: 22,727,058 km (0.083 R)
• M13: 23,121,996 km (0.095 R)
• M14: 27,683,834 km (0.108 R)

Planet 8 - Ice Giant

Semi-Major Axis: 10.82 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 15.1

Radius: 4.9

Gravity: 0.63 G

Time & Orbit

Eccentricity (e): 0.247

Orbit Range: 8.15 AU - 13.49 AU

Year: 22980 Days

Day: 16.1 Hours

Environment

Temp: -224 °C

Axial Tilt: 25.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 23,404,517 km

• M1: 64,626 km (0.041 R)
• M2: 1,532,630 km (0.088 R)
• M3: 2,274,336 km (0.073 R)
• M4: 4,008,625 km (0.113 R)
• M5: 4,204,598 km (0.09 R)
• M6: 6,151,614 km (0.096 R)
• M7: 6,530,994 km (0.058 R)
• M8: 8,067,813 km (0.074 R)
• M9: 18,357,155 km (0.103 R)
• M10: 19,387,884 km (0.039 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: 453 - 18,898 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit