🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.32 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.63 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.09

Radius: 1.76

Gravity: 1.32 G

Time & Orbit

Eccentricity (e): 0.185

Orbit Range: 0.51 AU - 0.75 AU

Year: 318 Days

Day: 21.6 Hours

Environment

Temp: -126 °C

Axial Tilt: 17.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 48,756,330 km

• M1: 112,797 km (0.076 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.94 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 178.5

Radius: 14.1

Gravity: 0.9 G

Time & Orbit

Eccentricity (e): 0.218

Orbit Range: 0.74 AU - 1.14 AU

Year: 579 Days

Day: 7.6 Hours

Environment

Temp: -157 °C

Axial Tilt: 35.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 48,756,330 km

• M1: 175,329 km (0.102 R)
• M2: 647,908 km (0.062 R)
• M3: 1,142,030 km (0.074 R)
• M4: 1,687,763 km (0.045 R)
• M5: 2,527,306 km (0.117 R)
• M6: 3,139,311 km (0.097 R)
• M7: 3,619,969 km (0.039 R)
• M8: 4,149,995 km (0.102 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.01 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 763.1

Radius: 8.1

Gravity: 11.63 G

Time & Orbit

Eccentricity (e): 0.038

Orbit Range: 0.97 AU - 1.05 AU

Year: 645 Days

Day: 12.9 Hours

Environment

Temp: -161 °C

Axial Tilt: 178.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 48,756,330 km

• M1: 120,127 km (0.105 R)
• M2: 405,560 km (0.113 R)
• M3: 669,002 km (0.102 R)
• M4: 1,006,943 km (0.058 R)
• M5: 1,302,848 km (0.034 R)
• M6: 1,746,854 km (0.108 R)
• M7: 2,018,823 km (0.084 R)
• M8: 2,339,412 km (0.055 R)
• M9: 2,750,806 km (0.081 R)
• M10: 3,071,843 km (0.108 R)
• M11: 3,525,124 km (0.102 R)
• M12: 3,832,548 km (0.03 R)
• M13: 4,157,624 km (0.07 R)
• M14: 4,729,686 km (0.115 R)
• M15: 5,209,895 km (0.113 R)
• M16: 6,187,817 km (0.096 R)
• M17: 7,084,955 km (0.053 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.23 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 450.5

Radius: 8.1

Gravity: 6.87 G

Time & Orbit

Eccentricity (e): 0.012

Orbit Range: 1.22 AU - 1.24 AU

Year: 867 Days

Day: 9.9 Hours

Environment

Temp: -174 °C

Axial Tilt: 162.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 48,756,330 km

• M1: 100,679 km (0.077 R)
• M2: 393,293 km (0.07 R)
• M3: 737,667 km (0.104 R)
• M4: 1,015,321 km (0.054 R)
• M5: 1,370,915 km (0.085 R)
• M6: 1,723,966 km (0.106 R)
• M7: 2,682,290 km (0.114 R)
• M8: 3,174,916 km (0.076 R)
• M9: 3,641,960 km (0.079 R)
• M10: 4,387,855 km (0.072 R)
• M11: 4,933,439 km (0.112 R)
• M12: 5,195,983 km (0.026 R)
• M13: 6,568,543 km (0.103 R)
• M14: 7,951,725 km (0.084 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.73 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 291.6

Radius: 14.7

Gravity: 1.35 G

Time & Orbit

Eccentricity (e): 0.022

Orbit Range: 1.69 AU - 1.77 AU

Year: 1447 Days

Day: 8.2 Hours

Environment

Temp: -186 °C

Axial Tilt: 9.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 48,756,330 km

• M1: 182,958 km (0.037 R)
• M2: 855,101 km (0.099 R)
• M3: 1,718,730 km (0.093 R)
• M4: 2,462,830 km (0.082 R)
• M5: 3,387,195 km (0.027 R)
• M6: 4,024,482 km (0.053 R)
• M7: 5,084,084 km (0.118 R)
• M8: 5,861,693 km (0.117 R)
• M9: 6,628,382 km (0.118 R)
• M10: 9,391,754 km (0.075 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.91 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 478.6

Radius: 12.6

Gravity: 3.01 G

Time & Orbit

Eccentricity (e): 0.25

Orbit Range: 1.43 AU - 2.39 AU

Year: 1678 Days

Day: 14.1 Hours

Environment

Temp: -179 °C

Axial Tilt: 34.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 48,756,330 km

• M1: 157,826 km (0.064 R)
• M2: 556,354 km (0.116 R)
• M3: 1,223,561 km (0.082 R)
• M4: 1,954,347 km (0.077 R)
• M5: 2,809,149 km (0.092 R)
• M6: 3,445,688 km (0.106 R)
• M7: 3,933,377 km (0.071 R)
• M8: 4,393,241 km (0.103 R)
• M9: 4,948,548 km (0.091 R)
• M10: 5,528,689 km (0.113 R)
• M11: 6,801,168 km (0.083 R)
• M12: 7,335,532 km (0.1 R)
• M13: 8,575,548 km (0.119 R)
• M14: 9,414,792 km (0.075 R)
• M15: 9,854,610 km (0.106 R)
• M16: 10,707,916 km (0.116 R)
• M17: 11,291,946 km (0.051 R)
• M18: 12,189,534 km (0.025 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.4 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 171.9

Radius: 14.5

Gravity: 0.82 G

Time & Orbit

Eccentricity (e): 0.017

Orbit Range: 5.31 AU - 5.49 AU

Year: 7979 Days

Day: 13.6 Hours

Environment

Temp: -208 °C

Axial Tilt: 1.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 48,756,330 km

• M1: 180,415 km (0.041 R)
• M2: 753,375 km (0.101 R)
• M3: 1,677,291 km (0.038 R)
• M4: 2,533,889 km (0.118 R)
• M5: 5,787,044 km (0.092 R)
• M6: 6,919,201 km (0.118 R)
• M7: 8,888,357 km (0.085 R)
• M8: 10,688,917 km (0.038 R)
• M9: 18,022,504 km (0.056 R)

Planet 8 - Gas Giant

Semi-Major Axis: 5.9 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 213.8

Radius: 14.4

Gravity: 1.03 G

Time & Orbit

Eccentricity (e): 0.214

Orbit Range: 4.64 AU - 7.16 AU

Year: 9112 Days

Day: 6.2 Hours

Environment

Temp: -223 °C

Axial Tilt: 25.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 48,756,330 km

• M1: 179,667 km (0.096 R)
• M2: 631,303 km (0.051 R)
• M3: 1,373,159 km (0.098 R)
• M4: 2,965,927 km (0.111 R)
• M5: 6,045,549 km (0.106 R)
• M6: 9,481,064 km (0.064 R)
• M7: 20,741,595 km (0.11 R)
• M8: 23,148,475 km (0.05 R)
• M9: 25,898,832 km (0.062 R)
• M10: 27,735,296 km (0.108 R)

Planet 9 - Ice Giant

Semi-Major Axis: 9.56 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 204.1

Radius: 5.1

Gravity: 7.85 G

Time & Orbit

Eccentricity (e): 0.091

Orbit Range: 8.69 AU - 10.43 AU

Year: 18794 Days

Day: 18.7 Hours

Environment

Temp: -239 °C

Axial Tilt: 30 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (36)

Outer Limit: 48,756,330 km

• M1: 66,721 km (0.061 R)
• M2: 274,362 km (0.071 R)
• M3: 719,865 km (0.119 R)
• M4: 1,155,344 km (0.056 R)
• M5: 1,326,185 km (0.119 R)
• M6: 1,813,276 km (0.048 R)
• M7: 2,080,308 km (0.101 R)
• M8: 2,278,974 km (0.095 R)
• M9: 2,974,155 km (0.119 R)
• M10: 3,775,102 km (0.115 R)
• M11: 4,099,131 km (0.057 R)
• M12: 4,354,345 km (0.025 R)
• M13: 4,772,172 km (0.119 R)
• M14: 5,314,913 km (0.053 R)
• M15: 6,186,620 km (0.079 R)
• M16: 6,792,192 km (0.088 R)
• M17: 7,230,963 km (0.115 R)
• M18: 7,859,274 km (0.103 R)
• M19: 8,892,546 km (0.099 R)
• M20: 12,590,157 km (0.089 R)
• M21: 19,005,811 km (0.081 R)
• M22: 20,360,270 km (0.119 R)
• M23: 21,863,130 km (0.084 R)
• M24: 22,206,906 km (0.081 R)
• M25: 24,714,765 km (0.107 R)
• M26: 28,615,829 km (0.029 R)
• M27: 28,923,851 km (0.089 R)
• M28: 29,338,237 km (0.11 R)
• M29: 31,578,166 km (0.112 R)
• M30: 34,506,245 km (0.079 R)
• M31: 40,895,420 km (0.071 R)
• M32: 41,679,762 km (0.112 R)
• M33: 44,093,075 km (0.04 R)
• M34: 45,752,714 km (0.115 R)
• M35: 46,033,210 km (0.066 R)
• M36: 48,319,364 km (0.041 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: 227 - 19,960 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit