🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.27 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.54 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.16

Radius: 1.36

Gravity: 1.17 G

Time & Orbit

Eccentricity (e): 0.139

Orbit Range: 0.46 AU - 0.62 AU

Year: 256 Days

Day: 20.7 Hours

Environment

Temp: -117 °C

Axial Tilt: 9.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.72 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 68.3

Radius: 10.9

Gravity: 0.57 G

Time & Orbit

Eccentricity (e): 0.033

Orbit Range: 0.7 AU - 0.74 AU

Year: 394 Days

Day: 5.5 Hours

Environment

Temp: -135 °C

Axial Tilt: 15.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (3)

Outer Limit: 74,655,488 km

• M1: 135,536 km (0.092 R)
• M2: 1,108,371 km (0.075 R)
• M3: 1,698,385 km (0.116 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.91 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 557.3

Radius: 12.2

Gravity: 3.74 G

Time & Orbit

Eccentricity (e): 0.215

Orbit Range: 0.71 AU - 1.11 AU

Year: 561 Days

Day: 10.1 Hours

Environment

Temp: -146 °C

Axial Tilt: 19.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 74,655,488 km

• M1: 151,842 km (0.115 R)
• M2: 573,857 km (0.118 R)
• M3: 996,023 km (0.093 R)
• M4: 1,479,972 km (0.074 R)
• M5: 1,917,994 km (0.106 R)
• M6: 2,328,790 km (0.12 R)
• M7: 2,756,490 km (0.056 R)
• M8: 3,553,997 km (0.099 R)
• M9: 4,028,072 km (0.097 R)
• M10: 4,649,651 km (0.058 R)
• M11: 5,710,151 km (0.1 R)
• M12: 6,325,896 km (0.112 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.22 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 788.4

Radius: 12.4

Gravity: 5.13 G

Time & Orbit

Eccentricity (e): 0.162

Orbit Range: 1.02 AU - 1.42 AU

Year: 870 Days

Day: 7.5 Hours

Environment

Temp: -161 °C

Axial Tilt: 9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 74,655,488 km

• M1: 154,684 km (0.076 R)
• M2: 622,477 km (0.095 R)
• M3: 1,062,743 km (0.106 R)
• M4: 1,787,246 km (0.103 R)
• M5: 2,501,875 km (0.083 R)
• M6: 3,343,662 km (0.119 R)
• M7: 3,962,399 km (0.093 R)
• M8: 5,625,927 km (0.076 R)
• M9: 6,569,740 km (0.114 R)
• M10: 8,663,961 km (0.094 R)
• M11: 9,180,821 km (0.116 R)

Planet 5 - Gas Giant

Semi-Major Axis: 5.66 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 925.5

Radius: 9.7

Gravity: 9.84 G

Time & Orbit

Eccentricity (e): 0.215

Orbit Range: 4.44 AU - 6.88 AU

Year: 8694 Days

Day: 8.7 Hours

Environment

Temp: -209 °C

Axial Tilt: 10.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 74,655,488 km

• M1: 123,119 km (0.056 R)
• M2: 529,427 km (0.094 R)
• M3: 909,705 km (0.111 R)
• M4: 1,394,851 km (0.089 R)
• M5: 2,619,459 km (0.108 R)
• M6: 3,662,605 km (0.093 R)
• M7: 5,087,973 km (0.107 R)
• M8: 6,774,540 km (0.059 R)
• M9: 7,618,720 km (0.055 R)
• M10: 8,531,417 km (0.088 R)
• M11: 9,564,091 km (0.072 R)
• M12: 13,963,764 km (0.107 R)
• M13: 16,707,240 km (0.088 R)
• M14: 18,622,093 km (0.11 R)
• M15: 19,474,651 km (0.115 R)
• M16: 22,707,910 km (0.095 R)
• M17: 24,132,231 km (0.096 R)
• M18: 26,379,041 km (0.099 R)
• M19: 29,275,705 km (0.096 R)
• M20: 30,005,294 km (0.039 R)
• M21: 34,988,997 km (0.093 R)
• M22: 35,692,556 km (0.039 R)
• M23: 44,886,991 km (0.099 R)

Planet 6 - Ice Giant

Semi-Major Axis: 6.09 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 66.6

Radius: 4

Gravity: 4.16 G

Time & Orbit

Eccentricity (e): 0.145

Orbit Range: 5.21 AU - 6.97 AU

Year: 9704 Days

Day: 20.6 Hours

Environment

Temp: -211 °C

Axial Tilt: 43.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 74,655,488 km

• M1: 50,115 km (0.064 R)
• M2: 243,695 km (0.053 R)
• M3: 411,394 km (0.12 R)
• M4: 575,353 km (0.045 R)
• M5: 904,319 km (0.081 R)
• M6: 1,251,237 km (0.085 R)
• M7: 1,974,841 km (0.06 R)
• M8: 2,892,026 km (0.098 R)
• M9: 3,616,229 km (0.067 R)
• M10: 3,774,354 km (0.048 R)
• M11: 4,612,850 km (0.106 R)
• M12: 5,137,041 km (0.085 R)
• M13: 7,068,948 km (0.043 R)
• M14: 8,890,452 km (0.101 R)
• M15: 11,933,721 km (0.081 R)
• M16: 13,193,186 km (0.085 R)
• M17: 13,380,034 km (0.092 R)
• M18: 14,538,519 km (0.047 R)
• M19: 15,398,558 km (0.11 R)
• M20: 20,836,739 km (0.063 R)
• M21: 21,090,308 km (0.107 R)

Planet 7 - Ice Giant

Semi-Major Axis: 10.04 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 613.4

Radius: 4.5

Gravity: 30.29 G

Time & Orbit

Eccentricity (e): 0.171

Orbit Range: 8.32 AU - 11.76 AU

Year: 20541 Days

Day: 24.6 Hours

Environment

Temp: -220 °C

Axial Tilt: 1.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 74,655,488 km

• M1: 55,950 km (0.054 R)
• M2: 391,049 km (0.087 R)
• M3: 680,072 km (0.097 R)
• M4: 987,496 km (0.11 R)
• M5: 1,590,525 km (0.119 R)
• M6: 2,523,417 km (0.07 R)
• M7: 2,911,025 km (0.073 R)
• M8: 7,412,275 km (0.115 R)
• M9: 11,802,674 km (0.085 R)
• M10: 15,690,872 km (0.095 R)
• M11: 16,089,101 km (0.103 R)
• M12: 21,503,048 km (0.113 R)
• M13: 23,203,378 km (0.063 R)
• M14: 25,643,618 km (0.114 R)
• M15: 28,484,183 km (0.11 R)
• M16: 29,435,775 km (0.056 R)
• M17: 39,554,575 km (0.117 R)
• M18: 54,984,697 km (0.058 R)
• M19: 59,098,040 km (0.112 R)

Kuiper Belt

Range: 30 - 47 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 350 - 15,077 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit