🌌 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: 0.86

Radius: 0.94

Gravity: 0.97 G

Time & Orbit

Eccentricity (e): 0.065

Orbit Range: 0.54 AU - 0.62 AU

Year: 290 Days

Day: 45.9 Hours

Environment

Temp: -116 °C

Axial Tilt: 46.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.63 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.07

Radius: 1.34

Gravity: 1.15 G

Time & Orbit

Eccentricity (e): 0.041

Orbit Range: 0.6 AU - 0.66 AU

Year: 328 Days

Day: 34.3 Hours

Environment

Temp: -121 °C

Axial Tilt: 17.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 44,996,308 km

• M1: 34,108 km (0.061 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.03 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 98.4

Radius: 12.2

Gravity: 0.66 G

Time & Orbit

Eccentricity (e): 0.022

Orbit Range: 1.01 AU - 1.05 AU

Year: 686 Days

Day: 11.8 Hours

Environment

Temp: -157 °C

Axial Tilt: 24 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 44,996,308 km

• M1: 151,991 km (0.096 R)
• M2: 533,616 km (0.091 R)
• M3: 1,855,163 km (0.098 R)
• M4: 2,322,208 km (0.07 R)
• M5: 3,136,768 km (0.096 R)
• M6: 4,085,368 km (0.075 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.2 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 131.7

Radius: 12.2

Gravity: 0.88 G

Time & Orbit

Eccentricity (e): 0.011

Orbit Range: 1.19 AU - 1.21 AU

Year: 862 Days

Day: 10 Hours

Environment

Temp: -175 °C

Axial Tilt: 48.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 44,996,308 km

• M1: 152,141 km (0.084 R)
• M2: 548,875 km (0.11 R)
• M3: 1,218,624 km (0.063 R)
• M4: 1,599,650 km (0.056 R)
• M5: 2,053,979 km (0.054 R)
• M6: 2,879,310 km (0.119 R)
• M7: 3,420,406 km (0.105 R)
• M8: 4,028,820 km (0.119 R)
• M9: 4,580,687 km (0.053 R)
• M10: 5,244,004 km (0.098 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.29 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 750.5

Radius: 9.3

Gravity: 8.68 G

Time & Orbit

Eccentricity (e): 0.146

Orbit Range: 1.1 AU - 1.48 AU

Year: 961 Days

Day: 9.3 Hours

Environment

Temp: -177 °C

Axial Tilt: 36 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 44,996,308 km

• M1: 115,639 km (0.102 R)
• M2: 504,594 km (0.11 R)
• M3: 919,578 km (0.085 R)
• M4: 1,887,476 km (0.082 R)
• M5: 2,523,866 km (0.078 R)
• M6: 3,411,131 km (0.06 R)
• M7: 4,170,041 km (0.045 R)
• M8: 7,969,976 km (0.119 R)
• M9: 8,577,194 km (0.067 R)
• M10: 9,677,187 km (0.108 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.03 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 151.3

Radius: 13.3

Gravity: 0.86 G

Time & Orbit

Eccentricity (e): 0.081

Orbit Range: 2.78 AU - 3.28 AU

Year: 3460 Days

Day: 14.1 Hours

Environment

Temp: -202 °C

Axial Tilt: 2.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 44,996,308 km

• M1: 165,455 km (0.091 R)
• M2: 946,057 km (0.057 R)
• M3: 1,426,117 km (0.074 R)
• M4: 2,004,911 km (0.079 R)
• M5: 2,513,693 km (0.115 R)
• M6: 2,976,698 km (0.112 R)
• M7: 3,416,666 km (0.063 R)
• M8: 3,848,106 km (0.115 R)
• M9: 6,559,119 km (0.037 R)
• M10: 8,833,605 km (0.111 R)
• M11: 10,455,096 km (0.11 R)
• M12: 11,702,742 km (0.033 R)
• M13: 12,382,066 km (0.069 R)
• M14: 13,450,045 km (0.073 R)
• M15: 13,902,429 km (0.114 R)

Planet 7 - Ice Giant

Semi-Major Axis: 6.78 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 390.6

Radius: 3.5

Gravity: 31.89 G

Time & Orbit

Eccentricity (e): 0.184

Orbit Range: 5.53 AU - 8.03 AU

Year: 11581 Days

Day: 21.4 Hours

Environment

Temp: -222 °C

Axial Tilt: 5.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 44,996,308 km

• M1: 59,839 km (0.059 R)
• M2: 316,250 km (0.057 R)
• M3: 954,285 km (0.11 R)
• M4: 1,167,761 km (0.092 R)
• M5: 1,532,929 km (0.104 R)
• M6: 1,857,407 km (0.106 R)
• M7: 1,986,211 km (0.069 R)
• M8: 2,661,197 km (0.089 R)
• M9: 4,306,025 km (0.119 R)
• M10: 4,886,465 km (0.103 R)
• M11: 5,070,321 km (0.077 R)
• M12: 7,449,076 km (0.103 R)
• M13: 14,057,263 km (0.079 R)
• M14: 21,470,586 km (0.111 R)
• M15: 29,279,594 km (0.097 R)
• M16: 31,228,107 km (0.094 R)
• M17: 33,043,178 km (0.11 R)
• M18: 41,259,242 km (0.059 R)
• M19: 41,512,212 km (0.115 R)
• M20: 43,703,372 km (0.087 R)

Planet 8 - Ice Giant

Semi-Major Axis: 9.22 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 168

Radius: 6.5

Gravity: 3.98 G

Time & Orbit

Eccentricity (e): 0.235

Orbit Range: 7.05 AU - 11.39 AU

Year: 18366 Days

Day: 17.4 Hours

Environment

Temp: -222 °C

Axial Tilt: 10.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 44,996,308 km

• M1: 96,939 km (0.105 R)
• M2: 490,831 km (0.084 R)
• M3: 907,311 km (0.065 R)
• M4: 4,509,927 km (0.077 R)
• M5: 5,561,600 km (0.071 R)
• M6: 8,575,249 km (0.095 R)
• M7: 10,528,549 km (0.095 R)
• M8: 12,530,018 km (0.073 R)
• M9: 15,224,276 km (0.094 R)
• M10: 23,950,769 km (0.042 R)
• M11: 24,395,523 km (0.059 R)
• M12: 42,484,449 km (0.059 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: 179 - 17,892 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit