🌌 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: 0.55 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.72

Radius: 1.24

Gravity: 1.12 G

Time & Orbit

Eccentricity (e): 0.079

Orbit Range: 0.51 AU - 0.59 AU

Year: 268 Days

Day: 18.9 Hours

Environment

Temp: -132 °C

Axial Tilt: 34.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.73 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 911.7

Radius: 11.8

Gravity: 6.55 G

Time & Orbit

Eccentricity (e): 0.007

Orbit Range: 0.72 AU - 0.74 AU

Year: 409 Days

Day: 13.3 Hours

Environment

Temp: -133 °C

Axial Tilt: 74.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 83,530,187 km

• M1: 146,756 km (0.051 R)
• M2: 711,338 km (0.089 R)
• M3: 1,125,574 km (0.118 R)
• M4: 1,514,080 km (0.097 R)
• M5: 1,928,466 km (0.068 R)
• M6: 2,298,122 km (0.042 R)
• M7: 2,736,295 km (0.078 R)
• M8: 3,796,345 km (0.116 R)
• M9: 4,413,436 km (0.089 R)
• M10: 4,845,774 km (0.105 R)
• M11: 5,709,403 km (0.092 R)
• M12: 6,151,165 km (0.116 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.94 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 703.7

Radius: 15

Gravity: 3.13 G

Time & Orbit

Eccentricity (e): 0.147

Orbit Range: 0.8 AU - 1.08 AU

Year: 598 Days

Day: 11.7 Hours

Environment

Temp: -148 °C

Axial Tilt: 13.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 83,530,187 km

• M1: 186,549 km (0.12 R)
• M2: 701,764 km (0.061 R)
• M3: 1,290,431 km (0.071 R)
• M4: 2,147,926 km (0.095 R)
• M5: 2,832,486 km (0.086 R)
• M6: 3,567,909 km (0.08 R)
• M7: 4,060,086 km (0.099 R)
• M8: 4,707,845 km (0.08 R)
• M9: 5,476,628 km (0.08 R)
• M10: 6,231,200 km (0.069 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.1 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 176.7

Radius: 9.2

Gravity: 2.09 G

Time & Orbit

Eccentricity (e): 0.142

Orbit Range: 1.8 AU - 2.4 AU

Year: 1996 Days

Day: 14.4 Hours

Environment

Temp: -196 °C

Axial Tilt: 25 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 83,530,187 km

• M1: 118,781 km (0.079 R)
• M2: 433,535 km (0.107 R)
• M3: 1,035,068 km (0.057 R)
• M4: 1,666,520 km (0.104 R)
• M5: 2,094,669 km (0.049 R)
• M6: 2,679,747 km (0.084 R)
• M7: 3,500,740 km (0.111 R)
• M8: 3,850,799 km (0.102 R)
• M9: 4,240,950 km (0.052 R)
• M10: 4,987,443 km (0.09 R)
• M11: 5,633,257 km (0.073 R)
• M12: 6,467,266 km (0.027 R)
• M13: 8,758,357 km (0.12 R)
• M14: 9,064,434 km (0.116 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.86 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 439

Radius: 11.8

Gravity: 3.15 G

Time & Orbit

Eccentricity (e): 0.239

Orbit Range: 2.94 AU - 4.78 AU

Year: 4975 Days

Day: 5.3 Hours

Environment

Temp: -216 °C

Axial Tilt: 12.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 83,530,187 km

• M1: 146,756 km (0.114 R)
• M2: 968,646 km (0.109 R)
• M3: 1,401,283 km (0.071 R)
• M4: 2,329,538 km (0.047 R)
• M5: 2,724,177 km (0.102 R)
• M6: 3,837,634 km (0.11 R)
• M7: 4,439,317 km (0.108 R)
• M8: 4,874,647 km (0.091 R)
• M9: 5,775,525 km (0.087 R)
• M10: 11,833,790 km (0.096 R)
• M11: 15,167,130 km (0.119 R)
• M12: 16,614,340 km (0.107 R)
• M13: 17,909,259 km (0.109 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.6 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 469.9

Radius: 13

Gravity: 2.78 G

Time & Orbit

Eccentricity (e): 0.165

Orbit Range: 3.84 AU - 5.36 AU

Year: 6472 Days

Day: 12.7 Hours

Environment

Temp: -213 °C

Axial Tilt: 54.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 83,530,187 km

• M1: 161,715 km (0.029 R)
• M2: 585,975 km (0.085 R)
• M3: 1,002,904 km (0.102 R)
• M4: 1,629,869 km (0.079 R)
• M5: 2,611,680 km (0.102 R)
• M6: 4,926,557 km (0.04 R)
• M7: 5,629,069 km (0.104 R)
• M8: 7,625,303 km (0.076 R)
• M9: 8,143,210 km (0.088 R)
• M10: 8,763,892 km (0.096 R)
• M11: 9,208,796 km (0.118 R)
• M12: 10,143,932 km (0.107 R)
• M13: 10,771,346 km (0.113 R)
• M14: 11,188,275 km (0.036 R)
• M15: 12,005,379 km (0.064 R)
• M16: 13,866,825 km (0.056 R)
• M17: 16,885,411 km (0.072 R)
• M18: 18,089,973 km (0.088 R)
• M19: 21,606,570 km (0.094 R)
• M20: 25,473,675 km (0.106 R)
• M21: 29,870,356 km (0.045 R)

Planet 7 - Ice Giant

Semi-Major Axis: 9.99 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 844.9

Radius: 5.8

Gravity: 25.12 G

Time & Orbit

Eccentricity (e): 0.122

Orbit Range: 8.77 AU - 11.21 AU

Year: 20714 Days

Day: 19.1 Hours

Environment

Temp: -225 °C

Axial Tilt: 3.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 83,530,187 km

• M1: 78,240 km (0.085 R)
• M2: 296,204 km (0.094 R)
• M3: 1,678,638 km (0.057 R)
• M4: 2,655,961 km (0.069 R)
• M5: 2,858,516 km (0.081 R)
• M6: 4,031,214 km (0.12 R)
• M7: 4,473,276 km (0.07 R)
• M8: 5,254,775 km (0.097 R)
• M9: 5,616,203 km (0.049 R)
• M10: 5,908,667 km (0.104 R)
• M11: 6,388,876 km (0.074 R)
• M12: 7,881,863 km (0.116 R)
• M13: 22,571,327 km (0.053 R)
• M14: 23,957,052 km (0.074 R)
• M15: 45,251,561 km (0.045 R)
• M16: 46,764,893 km (0.081 R)
• M17: 47,105,677 km (0.059 R)
• M18: 50,069,959 km (0.098 R)
• M19: 72,307,084 km (0.109 R)
• M20: 73,910,474 km (0.086 R)
• M21: 78,381,954 km (0.115 R)
• M22: 82,036,929 km (0.08 R)

Kuiper Belt

Range: 30 - 58 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 160 - 19,586 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit