🌌 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: 0.64 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.85

Radius: 1.28

Gravity: 1.13 G

Time & Orbit

Eccentricity (e): 0.238

Orbit Range: 0.49 AU - 0.79 AU

Year: 331 Days

Day: 34.4 Hours

Environment

Temp: -142 °C

Axial Tilt: 2.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 71,015,863 km

• M1: 48,919 km (0.117 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.84 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 922.8

Radius: 13.7

Gravity: 4.92 G

Time & Orbit

Eccentricity (e): 0.019

Orbit Range: 0.82 AU - 0.86 AU

Year: 497 Days

Day: 10 Hours

Environment

Temp: -141 °C

Axial Tilt: 31.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 71,015,863 km

• M1: 170,691 km (0.053 R)
• M2: 597,643 km (0.108 R)
• M3: 1,228,348 km (0.105 R)
• M4: 2,416,006 km (0.115 R)
• M5: 2,967,274 km (0.077 R)
• M6: 3,435,066 km (0.065 R)
• M7: 3,910,937 km (0.109 R)
• M8: 4,415,680 km (0.099 R)
• M9: 4,980,412 km (0.101 R)
• M10: 5,557,710 km (0.066 R)
• M11: 6,236,436 km (0.062 R)
• M12: 7,011,203 km (0.084 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.11 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 761.3

Radius: 14.9

Gravity: 3.43 G

Time & Orbit

Eccentricity (e): 0.238

Orbit Range: 0.85 AU - 1.37 AU

Year: 755 Days

Day: 11.1 Hours

Environment

Temp: -158 °C

Axial Tilt: 21.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 71,015,863 km

• M1: 185,352 km (0.112 R)
• M2: 704,456 km (0.112 R)
• M3: 1,323,792 km (0.081 R)
• M4: 1,836,314 km (0.086 R)
• M5: 2,430,068 km (0.104 R)
• M6: 2,928,079 km (0.065 R)
• M7: 3,399,911 km (0.116 R)
• M8: 6,023,259 km (0.093 R)
• M9: 7,103,505 km (0.062 R)
• M10: 7,773,255 km (0.115 R)
• M11: 8,612,050 km (0.105 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.16 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 298.5

Radius: 8.2

Gravity: 4.44 G

Time & Orbit

Eccentricity (e): 0.115

Orbit Range: 1.03 AU - 1.29 AU

Year: 807 Days

Day: 7.2 Hours

Environment

Temp: -175 °C

Axial Tilt: 26.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 71,015,863 km

• M1: 102,774 km (0.086 R)
• M2: 373,995 km (0.11 R)
• M3: 702,811 km (0.093 R)
• M4: 1,201,720 km (0.098 R)
• M5: 1,749,098 km (0.055 R)
• M6: 2,287,651 km (0.053 R)
• M7: 2,544,660 km (0.101 R)
• M8: 2,820,967 km (0.1 R)
• M9: 3,188,529 km (0.068 R)
• M10: 4,412,090 km (0.119 R)
• M11: 4,989,837 km (0.114 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.9 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 414.9

Radius: 8.6

Gravity: 5.61 G

Time & Orbit

Eccentricity (e): 0.006

Orbit Range: 1.89 AU - 1.91 AU

Year: 1691 Days

Day: 8.1 Hours

Environment

Temp: -185 °C

Axial Tilt: 45.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 71,015,863 km

• M1: 106,962 km (0.092 R)
• M2: 452,384 km (0.112 R)
• M3: 942,018 km (0.103 R)
• M4: 1,607,280 km (0.112 R)
• M5: 1,885,980 km (0.104 R)
• M6: 2,897,561 km (0.119 R)
• M7: 3,657,668 km (0.045 R)
• M8: 4,324,126 km (0.11 R)
• M9: 5,109,366 km (0.108 R)
• M10: 5,398,239 km (0.102 R)
• M11: 5,807,838 km (0.097 R)
• M12: 6,985,622 km (0.09 R)
• M13: 7,764,578 km (0.094 R)
• M14: 8,400,070 km (0.104 R)
• M15: 11,086,848 km (0.109 R)
• M16: 11,432,419 km (0.085 R)
• M17: 12,072,698 km (0.04 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.62 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 164.7

Radius: 9.8

Gravity: 1.71 G

Time & Orbit

Eccentricity (e): 0.114

Orbit Range: 3.21 AU - 4.03 AU

Year: 4447 Days

Day: 14 Hours

Environment

Temp: -201 °C

Axial Tilt: 27.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 71,015,863 km

• M1: 121,922 km (0.089 R)
• M2: 560,094 km (0.084 R)
• M3: 1,121,386 km (0.1 R)
• M4: 1,445,564 km (0.059 R)
• M5: 1,833,322 km (0.096 R)
• M6: 2,342,703 km (0.11 R)
• M7: 2,822,014 km (0.105 R)
• M8: 3,699,555 km (0.076 R)
• M9: 4,231,525 km (0.058 R)
• M10: 4,537,004 km (0.09 R)
• M11: 6,558,071 km (0.065 R)
• M12: 7,338,524 km (0.114 R)
• M13: 8,559,242 km (0.11 R)
• M14: 9,353,906 km (0.086 R)
• M15: 11,634,226 km (0.086 R)
• M16: 12,776,406 km (0.085 R)
• M17: 13,331,564 km (0.119 R)
• M18: 15,187,924 km (0.057 R)
• M19: 17,108,162 km (0.097 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.94 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 110.8

Radius: 9.4

Gravity: 1.25 G

Time & Orbit

Eccentricity (e): 0.152

Orbit Range: 3.34 AU - 4.54 AU

Year: 5050 Days

Day: 9.3 Hours

Environment

Temp: -207 °C

Axial Tilt: 6.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 71,015,863 km

• M1: 116,986 km (0.096 R)
• M2: 1,388,119 km (0.073 R)
• M3: 3,162,200 km (0.116 R)
• M4: 3,794,700 km (0.064 R)
• M5: 4,529,524 km (0.12 R)
• M6: 5,805,744 km (0.105 R)
• M7: 8,791,418 km (0.11 R)
• M8: 10,539,918 km (0.073 R)
• M9: 11,515,296 km (0.071 R)
• M10: 12,549,616 km (0.078 R)
• M11: 13,089,514 km (0.104 R)
• M12: 13,950,301 km (0.094 R)
• M13: 16,218,204 km (0.09 R)

Planet 8 - Gas Giant

Semi-Major Axis: 4.78 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 28.4

Radius: 10

Gravity: 0.28 G

Time & Orbit

Eccentricity (e): 0.016

Orbit Range: 4.7 AU - 4.86 AU

Year: 6748 Days

Day: 8.6 Hours

Environment

Temp: -223 °C

Axial Tilt: 44.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 71,015,863 km

• M1: 124,465 km (0.107 R)
• M2: 442,211 km (0.085 R)
• M3: 806,931 km (0.096 R)
• M4: 1,268,440 km (0.109 R)
• M5: 1,810,733 km (0.088 R)
• M6: 3,757,899 km (0.083 R)
• M7: 7,885,902 km (0.074 R)
• M8: 8,389,598 km (0.067 R)
• M9: 9,554,517 km (0.112 R)
• M10: 10,159,640 km (0.108 R)
• M11: 12,687,096 km (0.078 R)

Planet 9 - Ice Giant

Semi-Major Axis: 8.46 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 882.5

Radius: 4.3

Gravity: 47.73 G

Time & Orbit

Eccentricity (e): 0.174

Orbit Range: 6.99 AU - 9.93 AU

Year: 15888 Days

Day: 16.8 Hours

Environment

Temp: -221 °C

Axial Tilt: 49.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (40)

Outer Limit: 71,015,863 km

• M1: 53,556 km (0.085 R)
• M2: 188,793 km (0.112 R)
• M3: 427,252 km (0.097 R)
• M4: 962,662 km (0.091 R)
• M5: 2,106,787 km (0.108 R)
• M6: 2,400,597 km (0.101 R)
• M7: 2,793,591 km (0.118 R)
• M8: 3,148,437 km (0.119 R)
• M9: 6,434,055 km (0.081 R)
• M10: 9,301,547 km (0.11 R)
• M11: 10,859,160 km (0.047 R)
• M12: 11,165,536 km (0.094 R)
• M13: 11,989,073 km (0.095 R)
• M14: 18,052,125 km (0.09 R)
• M15: 20,454,816 km (0.095 R)
• M16: 20,640,916 km (0.095 R)
• M17: 23,062,457 km (0.1 R)
• M18: 25,237,610 km (0.068 R)
• M19: 25,992,032 km (0.045 R)
• M20: 26,540,009 km (0.025 R)
• M21: 26,761,413 km (0.098 R)
• M22: 26,984,015 km (0.109 R)
• M23: 29,632,945 km (0.036 R)
• M24: 30,230,887 km (0.057 R)
• M25: 30,836,759 km (0.107 R)
• M26: 31,081,501 km (0.102 R)
• M27: 41,664,204 km (0.118 R)
• M28: 45,032,250 km (0.06 R)
• M29: 46,460,910 km (0.059 R)
• M30: 47,429,855 km (0.06 R)
• M31: 49,241,336 km (0.062 R)
• M32: 49,408,287 km (0.113 R)
• M33: 49,743,237 km (0.096 R)
• M34: 55,131,004 km (0.119 R)
• M35: 57,501,682 km (0.082 R)
• M36: 60,320,255 km (0.077 R)
• M37: 60,702,926 km (0.082 R)
• M38: 64,818,962 km (0.115 R)
• M39: 67,252,471 km (0.077 R)
• M40: 70,590,897 km (0.058 R)

Kuiper Belt

Range: 30 - 47 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 371 - 16,176 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit