🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.33 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.66 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.97

Radius: 1.74

Gravity: 1.31 G

Time & Orbit

Eccentricity (e): 0.007

Orbit Range: 0.66 AU - 0.66 AU

Year: 352 Days

Day: 28.3 Hours

Environment

Temp: -129 °C

Axial Tilt: 11 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 43,751,091 km

• M1: 65,673 km (0.097 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.82 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 273.4

Radius: 11.2

Gravity: 2.18 G

Time & Orbit

Eccentricity (e): 0.062

Orbit Range: 0.77 AU - 0.87 AU

Year: 487 Days

Day: 12.4 Hours

Environment

Temp: -140 °C

Axial Tilt: 14.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 43,751,091 km

• M1: 139,276 km (0.066 R)
• M2: 592,707 km (0.031 R)
• M3: 1,049,130 km (0.033 R)
• M4: 1,411,157 km (0.043 R)
• M5: 1,823,000 km (0.072 R)
• M6: 2,408,526 km (0.09 R)
• M7: 2,885,593 km (0.114 R)
• M8: 3,615,631 km (0.103 R)
• M9: 4,412,240 km (0.117 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.3 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 142

Radius: 10

Gravity: 1.42 G

Time & Orbit

Eccentricity (e): 0.083

Orbit Range: 1.19 AU - 1.41 AU

Year: 972 Days

Day: 13.9 Hours

Environment

Temp: -175 °C

Axial Tilt: 37.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 43,751,091 km

• M1: 124,316 km (0.07 R)
• M2: 597,943 km (0.079 R)
• M3: 945,608 km (0.04 R)
• M4: 1,258,716 km (0.08 R)
• M5: 1,700,629 km (0.079 R)
• M6: 2,390,873 km (0.098 R)
• M7: 2,806,157 km (0.057 R)
• M8: 3,143,201 km (0.034 R)
• M9: 3,808,762 km (0.117 R)
• M10: 4,154,782 km (0.094 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.62 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 698.2

Radius: 15

Gravity: 3.1 G

Time & Orbit

Eccentricity (e): 0.177

Orbit Range: 1.33 AU - 1.91 AU

Year: 1353 Days

Day: 7.8 Hours

Environment

Temp: -175 °C

Axial Tilt: 34 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 43,751,091 km

• M1: 193,430 km (0.086 R)
• M2: 1,030,879 km (0.097 R)
• M3: 1,571,675 km (0.078 R)
• M4: 2,126,085 km (0.102 R)
• M5: 2,630,230 km (0.08 R)
• M6: 4,482,551 km (0.046 R)
• M7: 5,139,285 km (0.11 R)
• M8: 5,662,878 km (0.102 R)
• M9: 6,268,300 km (0.101 R)
• M10: 7,092,136 km (0.106 R)
• M11: 8,152,934 km (0.087 R)
• M12: 9,256,219 km (0.101 R)
• M13: 10,358,605 km (0.105 R)
• M14: 11,441,544 km (0.069 R)
• M15: 12,302,330 km (0.092 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.03 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 276.1

Radius: 12.1

Gravity: 1.89 G

Time & Orbit

Eccentricity (e): 0.072

Orbit Range: 1.88 AU - 2.18 AU

Year: 1897 Days

Day: 5.3 Hours

Environment

Temp: -198 °C

Axial Tilt: 37.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 43,751,091 km

• M1: 152,889 km (0.076 R)
• M2: 543,040 km (0.12 R)
• M3: 963,410 km (0.098 R)
• M4: 1,541,756 km (0.093 R)
• M5: 2,123,392 km (0.11 R)
• M6: 2,557,076 km (0.096 R)
• M7: 3,050,001 km (0.087 R)
• M8: 3,715,562 km (0.089 R)
• M9: 4,566,625 km (0.087 R)
• M10: 5,460,322 km (0.046 R)
• M11: 6,306,448 km (0.103 R)
• M12: 6,917,705 km (0.101 R)
• M13: 7,338,524 km (0.106 R)
• M14: 9,797,314 km (0.115 R)
• M15: 10,521,368 km (0.03 R)
• M16: 11,146,089 km (0.101 R)

Planet 6 - Gas Giant

Semi-Major Axis: 5.81 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 487.1

Radius: 8.3

Gravity: 7.07 G

Time & Orbit

Eccentricity (e): 0.082

Orbit Range: 5.33 AU - 6.29 AU

Year: 9187 Days

Day: 14.5 Hours

Environment

Temp: -215 °C

Axial Tilt: 2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 43,751,091 km

• M1: 103,223 km (0.119 R)
• M2: 366,964 km (0.104 R)
• M3: 941,868 km (0.065 R)
• M4: 1,293,124 km (0.106 R)
• M5: 1,773,782 km (0.102 R)
• M6: 2,179,342 km (0.086 R)
• M7: 2,762,474 km (0.08 R)
• M8: 3,220,992 km (0.029 R)
• M9: 4,263,539 km (0.063 R)
• M10: 4,591,159 km (0.11 R)
• M11: 5,205,108 km (0.037 R)
• M12: 9,078,197 km (0.094 R)
• M13: 9,761,261 km (0.108 R)
• M14: 10,139,295 km (0.064 R)
• M15: 12,561,434 km (0.105 R)
• M16: 13,236,719 km (0.103 R)
• M17: 17,048,921 km (0.093 R)
• M18: 17,806,635 km (0.119 R)
• M19: 22,096,054 km (0.062 R)
• M20: 25,309,716 km (0.116 R)
• M21: 26,935,545 km (0.089 R)
• M22: 30,094,753 km (0.088 R)
• M23: 38,410,001 km (0.108 R)

Planet 7 - Ice Giant

Semi-Major Axis: 7.89 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 746.1

Radius: 6.9

Gravity: 15.67 G

Time & Orbit

Eccentricity (e): 0.193

Orbit Range: 6.37 AU - 9.41 AU

Year: 14539 Days

Day: 22.3 Hours

Environment

Temp: -232 °C

Axial Tilt: 41.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (34)

Outer Limit: 43,751,091 km

• M1: 89,908 km (0.081 R)
• M2: 401,820 km (0.114 R)
• M3: 671,096 km (0.111 R)
• M4: 981,661 km (0.08 R)
• M5: 1,488,200 km (0.079 R)
• M6: 2,024,059 km (0.116 R)
• M7: 2,316,224 km (0.092 R)
• M8: 3,109,093 km (0.071 R)
• M9: 3,445,688 km (0.084 R)
• M10: 4,100,777 km (0.083 R)
• M11: 4,835,901 km (0.036 R)
• M12: 5,252,680 km (0.063 R)
• M13: 6,158,196 km (0.077 R)
• M14: 8,274,557 km (0.097 R)
• M15: 9,076,103 km (0.08 R)
• M16: 9,764,702 km (0.109 R)
• M17: 11,365,249 km (0.047 R)
• M18: 11,607,448 km (0.105 R)
• M19: 11,852,938 km (0.099 R)
• M20: 14,291,833 km (0.051 R)
• M21: 15,665,739 km (0.117 R)
• M22: 16,967,690 km (0.069 R)
• M23: 18,174,945 km (0.074 R)
• M24: 24,573,395 km (0.091 R)
• M25: 25,183,006 km (0.055 R)
• M26: 25,491,627 km (0.116 R)
• M27: 27,613,523 km (0.119 R)
• M28: 33,304,525 km (0.079 R)
• M29: 40,569,895 km (0.086 R)
• M30: 41,564,272 km (0.049 R)
• M31: 43,601,496 km (0.047 R)
• M32: 49,948,934 km (0.073 R)
• M33: 52,083,247 km (0.074 R)
• M34: 56,532,886 km (0.078 R)

Planet 8 - Ice Giant

Semi-Major Axis: 7.99 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 237.3

Radius: 4.1

Gravity: 14.12 G

Time & Orbit

Eccentricity (e): 0.131

Orbit Range: 6.94 AU - 9.04 AU

Year: 14816 Days

Day: 22.9 Hours

Environment

Temp: -220 °C

Axial Tilt: 24 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 43,751,091 km

• M1: 51,462 km (0.111 R)
• M2: 293,361 km (0.074 R)
• M3: 685,757 km (0.059 R)
• M4: 920,775 km (0.074 R)
• M5: 1,340,247 km (0.043 R)
• M6: 2,123,991 km (0.12 R)
• M7: 3,062,867 km (0.119 R)
• M8: 3,723,042 km (0.08 R)
• M9: 4,675,532 km (0.067 R)
• M10: 4,914,140 km (0.116 R)
• M11: 10,926,180 km (0.075 R)
• M12: 16,430,035 km (0.055 R)
• M13: 17,191,189 km (0.102 R)
• M14: 18,783,509 km (0.079 R)
• M15: 20,789,018 km (0.066 R)
• M16: 23,533,989 km (0.112 R)
• M17: 29,933,038 km (0.072 R)
• M18: 30,136,940 km (0.098 R)
• M19: 32,334,981 km (0.092 R)
• M20: 36,812,894 km (0.083 R)
• M21: 40,554,786 km (0.029 R)

Kuiper Belt

Range: 30 - 54 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 515 - 17,935 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit