🌌 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: 4.64

Radius: 1.85

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.095

Orbit Range: 0.52 AU - 0.64 AU

Year: 285 Days

Day: 19.8 Hours

Environment

Temp: -121 °C

Axial Tilt: 25.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.64 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.13

Radius: 0.44

Gravity: 0.67 G

Time & Orbit

Eccentricity (e): 0.245

Orbit Range: 0.48 AU - 0.8 AU

Year: 331 Days

Day: 27.3 Hours

Environment

Temp: -128 °C

Axial Tilt: 17.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 56,391,996 km

• M1: 92,900 km (0.118 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.69 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 523.5

Radius: 14.3

Gravity: 2.56 G

Time & Orbit

Eccentricity (e): 0.12

Orbit Range: 0.61 AU - 0.77 AU

Year: 370 Days

Day: 11.9 Hours

Environment

Temp: -141 °C

Axial Tilt: 0.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 56,391,996 km

• M1: 178,171 km (0.091 R)
• M2: 807,230 km (0.117 R)
• M3: 1,355,806 km (0.115 R)
• M4: 2,009,399 km (0.12 R)
• M5: 2,927,331 km (0.116 R)
• M6: 3,394,974 km (0.116 R)
• M7: 4,022,836 km (0.114 R)
• M8: 4,672,540 km (0.111 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.19 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 536

Radius: 9.4

Gravity: 6.07 G

Time & Orbit

Eccentricity (e): 0.056

Orbit Range: 1.12 AU - 1.26 AU

Year: 838 Days

Day: 13.6 Hours

Environment

Temp: -176 °C

Axial Tilt: 8.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 56,391,996 km

• M1: 116,836 km (0.117 R)
• M2: 436,227 km (0.106 R)
• M3: 784,790 km (0.103 R)
• M4: 1,092,364 km (0.076 R)
• M5: 1,437,935 km (0.116 R)
• M6: 1,839,007 km (0.114 R)
• M7: 2,775,041 km (0.109 R)
• M8: 3,179,104 km (0.08 R)
• M9: 3,511,212 km (0.089 R)
• M10: 4,015,356 km (0.113 R)
• M11: 4,550,468 km (0.028 R)
• M12: 5,150,505 km (0.115 R)
• M13: 5,516,421 km (0.062 R)
• M14: 5,899,691 km (0.076 R)
• M15: 6,300,614 km (0.114 R)
• M16: 7,068,350 km (0.067 R)
• M17: 7,613,933 km (0.116 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.25 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 807.8

Radius: 11

Gravity: 6.68 G

Time & Orbit

Eccentricity (e): 0.027

Orbit Range: 1.22 AU - 1.28 AU

Year: 902 Days

Day: 8.3 Hours

Environment

Temp: -167 °C

Axial Tilt: 4.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 56,391,996 km

• M1: 136,732 km (0.102 R)
• M2: 531,820 km (0.075 R)
• M3: 998,865 km (0.081 R)
• M4: 1,517,670 km (0.113 R)
• M5: 2,118,306 km (0.105 R)
• M6: 2,650,126 km (0.034 R)
• M7: 6,158,346 km (0.059 R)
• M8: 8,326,318 km (0.037 R)
• M9: 9,510,385 km (0.074 R)
• M10: 9,889,466 km (0.116 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.59 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 827.7

Radius: 12.9

Gravity: 4.97 G

Time & Orbit

Eccentricity (e): 0.057

Orbit Range: 2.44 AU - 2.74 AU

Year: 2691 Days

Day: 9.6 Hours

Environment

Temp: -190 °C

Axial Tilt: 20.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 56,391,996 km

• M1: 160,369 km (0.053 R)
• M2: 580,739 km (0.111 R)
• M3: 1,020,257 km (0.106 R)
• M4: 1,659,190 km (0.059 R)
• M5: 3,909,591 km (0.086 R)
• M6: 4,542,539 km (0.097 R)
• M7: 6,685,080 km (0.025 R)
• M8: 7,978,354 km (0.076 R)
• M9: 8,478,609 km (0.077 R)
• M10: 9,653,401 km (0.064 R)
• M11: 10,068,385 km (0.061 R)
• M12: 12,106,806 km (0.112 R)
• M13: 15,000,029 km (0.114 R)
• M14: 15,660,653 km (0.084 R)
• M15: 17,815,610 km (0.102 R)
• M16: 18,326,487 km (0.087 R)

Planet 7 - Ice Giant

Semi-Major Axis: 7.49 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 959.8

Radius: 3.4

Gravity: 83.03 G

Time & Orbit

Eccentricity (e): 0.092

Orbit Range: 6.8 AU - 8.18 AU

Year: 13235 Days

Day: 15.5 Hours

Environment

Temp: -229 °C

Axial Tilt: 18.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (28)

Outer Limit: 56,391,996 km

• M1: 42,486 km (0.091 R)
• M2: 969,394 km (0.099 R)
• M3: 1,752,240 km (0.12 R)
• M4: 1,948,662 km (0.056 R)
• M5: 2,280,919 km (0.098 R)
• M6: 2,765,466 km (0.074 R)
• M7: 4,177,670 km (0.089 R)
• M8: 5,108,318 km (0.096 R)
• M9: 7,011,054 km (0.089 R)
• M10: 8,119,275 km (0.048 R)
• M11: 8,364,017 km (0.053 R)
• M12: 8,513,166 km (0.115 R)
• M13: 9,607,774 km (0.061 R)
• M14: 9,881,538 km (0.113 R)
• M15: 10,273,634 km (0.104 R)
• M16: 11,329,196 km (0.074 R)
• M17: 17,300,545 km (0.106 R)
• M18: 20,993,518 km (0.104 R)
• M19: 21,361,529 km (0.097 R)
• M20: 25,803,838 km (0.096 R)
• M21: 29,887,560 km (0.119 R)
• M22: 34,509,087 km (0.091 R)
• M23: 34,636,694 km (0.102 R)
• M24: 39,305,793 km (0.116 R)
• M25: 39,444,919 km (0.113 R)
• M26: 45,440,952 km (0.086 R)
• M27: 54,919,024 km (0.051 R)
• M28: 59,931,899 km (0.115 R)

Planet 8 - Ice Giant

Semi-Major Axis: 8.32 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 621.8

Radius: 7.3

Gravity: 11.67 G

Time & Orbit

Eccentricity (e): 0.139

Orbit Range: 7.16 AU - 9.48 AU

Year: 15495 Days

Day: 19.9 Hours

Environment

Temp: -237 °C

Axial Tilt: 12.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (34)

Outer Limit: 56,391,996 km

• M1: 91,853 km (0.084 R)
• M2: 344,973 km (0.094 R)
• M3: 1,194,090 km (0.115 R)
• M4: 2,487,065 km (0.091 R)
• M5: 2,843,706 km (0.079 R)
• M6: 3,522,880 km (0.071 R)
• M7: 4,956,177 km (0.114 R)
• M8: 7,083,160 km (0.084 R)
• M9: 7,436,361 km (0.059 R)
• M10: 7,709,077 km (0.116 R)
• M11: 8,322,578 km (0.069 R)
• M12: 8,567,171 km (0.08 R)
• M13: 8,866,815 km (0.069 R)
• M14: 11,224,029 km (0.036 R)
• M15: 12,198,659 km (0.102 R)
• M16: 13,294,912 km (0.093 R)
• M17: 15,096,220 km (0.091 R)
• M18: 15,533,944 km (0.098 R)
• M19: 16,588,309 km (0.095 R)
• M20: 17,132,995 km (0.054 R)
• M21: 18,012,930 km (0.026 R)
• M22: 19,862,708 km (0.067 R)
• M23: 21,835,455 km (0.111 R)
• M24: 24,731,221 km (0.101 R)
• M25: 25,544,584 km (0.078 R)
• M26: 27,764,318 km (0.099 R)
• M27: 29,313,703 km (0.112 R)
• M28: 37,932,634 km (0.062 R)
• M29: 40,533,693 km (0.099 R)
• M30: 45,480,745 km (0.055 R)
• M31: 46,087,962 km (0.064 R)
• M32: 49,684,744 km (0.095 R)
• M33: 55,510,534 km (0.075 R)
• M34: 58,497,555 km (0.079 R)

Planet 9 - Ice Giant

Semi-Major Axis: 8.54 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 249.2

Radius: 7.6

Gravity: 4.31 G

Time & Orbit

Eccentricity (e): 0.117

Orbit Range: 7.54 AU - 9.54 AU

Year: 16114 Days

Day: 18.4 Hours

Environment

Temp: -218 °C

Axial Tilt: 18 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (29)

Outer Limit: 56,391,996 km

• M1: 94,546 km (0.108 R)
• M2: 346,020 km (0.11 R)
• M3: 658,231 km (0.113 R)
• M4: 987,944 km (0.11 R)
• M5: 1,299,557 km (0.066 R)
• M6: 1,720,675 km (0.079 R)
• M7: 2,452,807 km (0.098 R)
• M8: 4,147,601 km (0.109 R)
• M9: 5,124,774 km (0.039 R)
• M10: 5,383,279 km (0.105 R)
• M11: 6,067,839 km (0.092 R)
• M12: 6,394,262 km (0.087 R)
• M13: 7,161,699 km (0.084 R)
• M14: 7,989,125 km (0.115 R)
• M15: 8,515,260 km (0.036 R)
• M16: 9,588,027 km (0.109 R)
• M17: 10,283,657 km (0.117 R)
• M18: 12,630,847 km (0.045 R)
• M19: 13,711,692 km (0.069 R)
• M20: 17,179,221 km (0.109 R)
• M21: 19,424,536 km (0.083 R)
• M22: 25,131,096 km (0.088 R)
• M23: 26,068,775 km (0.079 R)
• M24: 32,299,227 km (0.067 R)
• M25: 39,204,067 km (0.113 R)
• M26: 39,453,895 km (0.088 R)
• M27: 40,209,963 km (0.1 R)
• M28: 42,011,720 km (0.084 R)
• M29: 45,224,483 km (0.078 R)

Planet 10 - Ice Giant

Semi-Major Axis: 9.08 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 357.4

Radius: 6.3

Gravity: 9 G

Time & Orbit

Eccentricity (e): 0.024

Orbit Range: 8.86 AU - 9.3 AU

Year: 17666 Days

Day: 22 Hours

Environment

Temp: -232 °C

Axial Tilt: 7.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (30)

Outer Limit: 56,391,996 km

• M1: 78,389 km (0.12 R)
• M2: 385,364 km (0.12 R)
• M3: 686,205 km (0.1 R)
• M4: 1,001,109 km (0.062 R)
• M5: 1,772,286 km (0.101 R)
• M6: 2,120,550 km (0.077 R)
• M7: 2,576,524 km (0.068 R)
• M8: 3,875,034 km (0.115 R)
• M9: 4,493,471 km (0.065 R)
• M10: 5,382,831 km (0.052 R)
• M11: 5,631,462 km (0.111 R)
• M12: 6,037,620 km (0.101 R)
• M13: 6,703,630 km (0.114 R)
• M14: 8,557,447 km (0.117 R)
• M15: 10,181,332 km (0.102 R)
• M16: 11,179,898 km (0.103 R)
• M17: 11,643,950 km (0.062 R)
• M18: 12,364,114 km (0.107 R)
• M19: 13,760,910 km (0.047 R)
• M20: 14,226,608 km (0.048 R)
• M21: 14,702,628 km (0.103 R)
• M22: 15,758,640 km (0.085 R)
• M23: 18,337,707 km (0.097 R)
• M24: 20,148,589 km (0.111 R)
• M25: 22,438,484 km (0.039 R)
• M26: 28,695,265 km (0.118 R)
• M27: 39,777,775 km (0.09 R)
• M28: 43,359,596 km (0.1 R)
• M29: 48,819,171 km (0.091 R)
• M30: 54,719,460 km (0.087 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: 359 - 12,091 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit