🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.29 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.58 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.4

Radius: 1.81

Gravity: 1.34 G

Time & Orbit

Eccentricity (e): 0.201

Orbit Range: 0.46 AU - 0.7 AU

Year: 281 Days

Day: 25.3 Hours

Environment

Temp: -122 °C

Axial Tilt: 11.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.8 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 472.4

Radius: 10.2

Gravity: 4.54 G

Time & Orbit

Eccentricity (e): 0.1

Orbit Range: 0.72 AU - 0.88 AU

Year: 455 Days

Day: 10.4 Hours

Environment

Temp: -138 °C

Axial Tilt: 33.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 26,392,131 km

• M1: 127,009 km (0.062 R)
• M2: 461,659 km (0.115 R)
• M3: 821,891 km (0.089 R)
• M4: 1,165,816 km (0.048 R)
• M5: 1,903,633 km (0.064 R)
• M6: 2,394,912 km (0.094 R)
• M7: 2,725,224 km (0.089 R)
• M8: 3,053,891 km (0.08 R)
• M9: 3,854,688 km (0.099 R)
• M10: 4,352,251 km (0.088 R)
• M11: 4,966,649 km (0.104 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.73 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 862.7

Radius: 12.5

Gravity: 5.52 G

Time & Orbit

Eccentricity (e): 0.222

Orbit Range: 1.35 AU - 2.11 AU

Year: 1447 Days

Day: 13.1 Hours

Environment

Temp: -186 °C

Axial Tilt: 17.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 26,392,131 km

• M1: 155,432 km (0.049 R)
• M2: 575,802 km (0.111 R)
• M3: 967,001 km (0.09 R)
• M4: 1,441,226 km (0.088 R)
• M5: 2,220,631 km (0.061 R)
• M6: 3,700,453 km (0.108 R)
• M7: 4,120,524 km (0.097 R)
• M8: 5,163,071 km (0.088 R)
• M9: 5,599,598 km (0.082 R)
• M10: 6,179,888 km (0.114 R)
• M11: 7,059,673 km (0.088 R)
• M12: 7,737,800 km (0.114 R)
• M13: 9,511,283 km (0.066 R)
• M14: 9,902,930 km (0.104 R)
• M15: 10,718,538 km (0.105 R)
• M16: 13,073,358 km (0.095 R)
• M17: 14,097,056 km (0.108 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.86 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 133.1

Radius: 11.8

Gravity: 0.96 G

Time & Orbit

Eccentricity (e): 0.212

Orbit Range: 2.25 AU - 3.47 AU

Year: 3075 Days

Day: 13.8 Hours

Environment

Temp: -194 °C

Axial Tilt: 4.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 26,392,131 km

• M1: 146,756 km (0.105 R)
• M2: 556,354 km (0.118 R)
• M3: 1,120,039 km (0.083 R)
• M4: 1,824,795 km (0.109 R)
• M5: 2,330,585 km (0.092 R)
• M6: 2,793,591 km (0.068 R)
• M7: 3,347,851 km (0.112 R)
• M8: 4,307,671 km (0.051 R)
• M9: 5,463,314 km (0.08 R)
• M10: 6,148,323 km (0.12 R)
• M11: 6,644,389 km (0.112 R)
• M12: 7,321,170 km (0.119 R)
• M13: 7,797,490 km (0.099 R)
• M14: 8,379,426 km (0.096 R)
• M15: 10,899,551 km (0.096 R)
• M16: 11,381,556 km (0.083 R)
• M17: 12,462,251 km (0.095 R)

Planet 5 - Gas Giant

Semi-Major Axis: 4.65 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 190.4

Radius: 8.5

Gravity: 2.64 G

Time & Orbit

Eccentricity (e): 0.095

Orbit Range: 4.21 AU - 5.09 AU

Year: 6375 Days

Day: 11.7 Hours

Environment

Temp: -217 °C

Axial Tilt: 15.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 26,392,131 km

• M1: 105,766 km (0.094 R)
• M2: 461,809 km (0.091 R)
• M3: 773,122 km (0.088 R)
• M4: 1,111,662 km (0.097 R)
• M5: 1,593,068 km (0.048 R)
• M6: 1,901,539 km (0.066 R)
• M7: 2,321,759 km (0.109 R)
• M8: 3,076,331 km (0.115 R)
• M9: 3,349,048 km (0.102 R)
• M10: 4,243,942 km (0.083 R)
• M11: 4,583,080 km (0.068 R)
• M12: 6,889,132 km (0.118 R)
• M13: 7,168,281 km (0.087 R)
• M14: 7,683,197 km (0.083 R)
• M15: 9,190,096 km (0.086 R)
• M16: 9,643,528 km (0.04 R)
• M17: 10,967,917 km (0.041 R)
• M18: 12,917,178 km (0.044 R)
• M19: 16,421,807 km (0.109 R)
• M20: 16,977,264 km (0.049 R)
• M21: 19,695,607 km (0.098 R)

Planet 6 - Ice Giant

Semi-Major Axis: 8.17 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 249.8

Radius: 4.7

Gravity: 11.31 G

Time & Orbit

Eccentricity (e): 0.012

Orbit Range: 8.07 AU - 8.27 AU

Year: 14848 Days

Day: 24.5 Hours

Environment

Temp: -225 °C

Axial Tilt: 37 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 26,392,131 km

• M1: 60,886 km (0.06 R)
• M2: 305,329 km (0.046 R)
• M3: 545,434 km (0.114 R)
• M4: 1,308,981 km (0.095 R)
• M5: 2,739,735 km (0.029 R)
• M6: 5,042,944 km (0.111 R)
• M7: 9,866,578 km (0.117 R)
• M8: 10,311,632 km (0.057 R)
• M9: 10,718,239 km (0.026 R)
• M10: 12,002,536 km (0.096 R)
• M11: 15,130,478 km (0.119 R)
• M12: 15,922,449 km (0.053 R)
• M13: 16,192,474 km (0.033 R)
• M14: 16,534,305 km (0.047 R)
• M15: 17,232,328 km (0.087 R)
• M16: 22,004,500 km (0.097 R)
• M17: 24,961,751 km (0.094 R)
• M18: 26,914,751 km (0.083 R)
• M19: 36,325,804 km (0.113 R)
• M20: 38,342,383 km (0.07 R)

Planet 7 - Ice Giant

Semi-Major Axis: 8.67 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 43.4

Radius: 7

Gravity: 0.89 G

Time & Orbit

Eccentricity (e): 0.003

Orbit Range: 8.64 AU - 8.7 AU

Year: 16232 Days

Day: 24.5 Hours

Environment

Temp: -219 °C

Axial Tilt: 36.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 26,392,131 km

• M1: 89,908 km (0.103 R)
• M2: 323,730 km (0.095 R)
• M3: 544,087 km (0.041 R)
• M4: 1,757,925 km (0.025 R)
• M5: 2,063,852 km (0.06 R)
• M6: 2,343,151 km (0.077 R)
• M7: 2,564,855 km (0.096 R)
• M8: 3,162,948 km (0.083 R)
• M9: 3,850,200 km (0.104 R)
• M10: 5,434,741 km (0.086 R)
• M11: 6,205,768 km (0.05 R)
• M12: 6,950,467 km (0.12 R)
• M13: 9,702,170 km (0.082 R)
• M14: 18,258,719 km (0.096 R)
• M15: 18,631,368 km (0.118 R)
• M16: 19,714,456 km (0.08 R)
• M17: 22,215,733 km (0.047 R)
• M18: 22,783,157 km (0.115 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: 168 - 18,730 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit