🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.27 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.53 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.74

Radius: 1.69

Gravity: 1.31 G

Time & Orbit

Eccentricity (e): 0.207

Orbit Range: 0.42 AU - 0.64 AU

Year: 253 Days

Day: 37.6 Hours

Environment

Temp: -113 °C

Axial Tilt: 38.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.7 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 704.3

Radius: 10.3

Gravity: 6.64 G

Time & Orbit

Eccentricity (e): 0.145

Orbit Range: 0.6 AU - 0.8 AU

Year: 384 Days

Day: 5.7 Hours

Environment

Temp: -142 °C

Axial Tilt: 26.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 72,439,383 km

• M1: 131,347 km (0.066 R)
• M2: 768,933 km (0.119 R)
• M3: 1,194,240 km (0.074 R)
• M4: 1,531,882 km (0.092 R)
• M5: 1,903,334 km (0.107 R)
• M6: 2,594,027 km (0.099 R)
• M7: 3,040,726 km (0.083 R)
• M8: 3,610,245 km (0.089 R)
• M9: 4,037,347 km (0.085 R)
• M10: 4,654,139 km (0.048 R)
• M11: 5,161,127 km (0.083 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.06 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 550.7

Radius: 10.2

Gravity: 5.29 G

Time & Orbit

Eccentricity (e): 0.025

Orbit Range: 1.03 AU - 1.09 AU

Year: 716 Days

Day: 12.4 Hours

Environment

Temp: -165 °C

Axial Tilt: 24.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 72,439,383 km

• M1: 126,859 km (0.12 R)
• M2: 544,835 km (0.049 R)
• M3: 906,563 km (0.1 R)
• M4: 1,239,269 km (0.072 R)
• M5: 1,571,226 km (0.12 R)
• M6: 2,173,807 km (0.093 R)
• M7: 4,768,283 km (0.106 R)
• M8: 5,935,595 km (0.106 R)
• M9: 6,606,691 km (0.118 R)
• M10: 7,003,275 km (0.102 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.58 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 584.5

Radius: 14.7

Gravity: 2.7 G

Time & Orbit

Eccentricity (e): 0.076

Orbit Range: 1.46 AU - 1.7 AU

Year: 1303 Days

Day: 10.6 Hours

Environment

Temp: -171 °C

Axial Tilt: 15.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 72,439,383 km

• M1: 184,454 km (0.038 R)
• M2: 859,889 km (0.116 R)
• M3: 1,726,509 km (0.111 R)
• M4: 2,191,758 km (0.111 R)
• M5: 2,963,833 km (0.089 R)
• M6: 3,720,050 km (0.091 R)
• M7: 4,900,377 km (0.054 R)
• M8: 6,182,581 km (0.091 R)
• M9: 7,346,153 km (0.066 R)
• M10: 7,887,697 km (0.071 R)
• M11: 9,080,441 km (0.095 R)
• M12: 9,919,685 km (0.057 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.96 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 971.4

Radius: 11.4

Gravity: 7.47 G

Time & Orbit

Eccentricity (e): 0.149

Orbit Range: 1.67 AU - 2.25 AU

Year: 1800 Days

Day: 5.8 Hours

Environment

Temp: -188 °C

Axial Tilt: 2.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 72,439,383 km

• M1: 141,819 km (0.078 R)
• M2: 634,445 km (0.091 R)
• M3: 1,289,683 km (0.097 R)
• M4: 1,853,667 km (0.099 R)
• M5: 2,633,820 km (0.116 R)
• M6: 3,036,837 km (0.102 R)
• M7: 3,875,034 km (0.107 R)
• M8: 4,318,741 km (0.054 R)
• M9: 4,904,566 km (0.09 R)
• M10: 5,566,686 km (0.08 R)
• M11: 5,956,987 km (0.114 R)
• M12: 7,041,422 km (0.102 R)
• M13: 7,975,810 km (0.117 R)
• M14: 9,224,055 km (0.098 R)
• M15: 9,842,343 km (0.101 R)
• M16: 10,269,595 km (0.119 R)
• M17: 11,392,626 km (0.105 R)
• M18: 11,943,894 km (0.098 R)
• M19: 12,471,675 km (0.07 R)
• M20: 13,357,145 km (0.103 R)
• M21: 14,602,248 km (0.105 R)
• M22: 16,216,260 km (0.062 R)
• M23: 16,964,997 km (0.088 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.59 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 769

Radius: 14.1

Gravity: 3.87 G

Time & Orbit

Eccentricity (e): 0.04

Orbit Range: 2.49 AU - 2.69 AU

Year: 2734 Days

Day: 7.4 Hours

Environment

Temp: -200 °C

Axial Tilt: 38.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 72,439,383 km

• M1: 175,478 km (0.038 R)
• M2: 825,780 km (0.109 R)
• M3: 1,507,348 km (0.099 R)
• M4: 2,294,981 km (0.116 R)
• M5: 2,776,836 km (0.044 R)
• M6: 3,434,318 km (0.113 R)
• M7: 4,625,865 km (0.091 R)
• M8: 5,943,673 km (0.082 R)
• M9: 6,690,316 km (0.113 R)
• M10: 7,222,436 km (0.042 R)
• M11: 7,718,951 km (0.1 R)
• M12: 8,338,137 km (0.041 R)
• M13: 9,275,218 km (0.096 R)
• M14: 11,776,644 km (0.111 R)
• M15: 12,598,833 km (0.097 R)
• M16: 15,347,096 km (0.116 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.88 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 867.3

Radius: 11.9

Gravity: 6.12 G

Time & Orbit

Eccentricity (e): 0.031

Orbit Range: 2.79 AU - 2.97 AU

Year: 3206 Days

Day: 9.9 Hours

Environment

Temp: -205 °C

Axial Tilt: 24.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 72,439,383 km

• M1: 147,952 km (0.094 R)
• M2: 701,016 km (0.093 R)
• M3: 1,380,938 km (0.113 R)
• M4: 1,861,147 km (0.101 R)
• M5: 2,482,726 km (0.067 R)
• M6: 2,902,348 km (0.081 R)
• M7: 3,350,693 km (0.102 R)
• M8: 3,762,835 km (0.036 R)
• M9: 4,572,309 km (0.119 R)
• M10: 5,363,084 km (0.036 R)
• M11: 5,930,060 km (0.101 R)
• M12: 11,256,492 km (0.12 R)
• M13: 15,238,488 km (0.095 R)
• M14: 15,937,260 km (0.058 R)
• M15: 17,283,640 km (0.12 R)
• M16: 17,984,506 km (0.112 R)

Planet 8 - Ice Giant

Semi-Major Axis: 6.51 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 454.3

Radius: 7.4

Gravity: 8.3 G

Time & Orbit

Eccentricity (e): 0.163

Orbit Range: 5.45 AU - 7.57 AU

Year: 10896 Days

Day: 23.5 Hours

Environment

Temp: -229 °C

Axial Tilt: 28.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (37)

Outer Limit: 72,439,383 km

• M1: 114,592 km (0.111 R)
• M2: 353,949 km (0.115 R)
• M3: 942,317 km (0.071 R)
• M4: 1,382,584 km (0.027 R)
• M5: 1,874,461 km (0.056 R)
• M6: 2,384,291 km (0.083 R)
• M7: 2,835,029 km (0.085 R)
• M8: 3,203,638 km (0.105 R)
• M9: 5,007,490 km (0.112 R)
• M10: 5,580,300 km (0.109 R)
• M11: 6,160,590 km (0.062 R)
• M12: 6,780,374 km (0.114 R)
• M13: 7,481,090 km (0.07 R)
• M14: 8,402,015 km (0.096 R)
• M15: 9,443,366 km (0.045 R)
• M16: 9,921,929 km (0.081 R)
• M17: 10,167,270 km (0.108 R)
• M18: 12,110,845 km (0.116 R)
• M19: 14,289,289 km (0.045 R)
• M20: 15,177,751 km (0.091 R)
• M21: 17,416,782 km (0.097 R)
• M22: 18,652,162 km (0.104 R)
• M23: 20,178,958 km (0.092 R)
• M24: 20,732,470 km (0.114 R)
• M25: 21,377,386 km (0.096 R)
• M26: 21,952,740 km (0.113 R)
• M27: 22,962,824 km (0.047 R)
• M28: 26,365,727 km (0.103 R)
• M29: 27,410,219 km (0.095 R)
• M30: 28,580,972 km (0.118 R)
• M31: 30,193,189 km (0.113 R)
• M32: 33,708,140 km (0.05 R)
• M33: 36,429,325 km (0.075 R)
• M34: 40,032,540 km (0.091 R)
• M35: 40,405,487 km (0.104 R)
• M36: 41,792,559 km (0.077 R)
• M37: 43,603,441 km (0.066 R)

Planet 9 - Ice Giant

Semi-Major Axis: 6.57 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 73.5

Radius: 5.3

Gravity: 2.62 G

Time & Orbit

Eccentricity (e): 0.029

Orbit Range: 6.38 AU - 6.76 AU

Year: 11047 Days

Day: 16.1 Hours

Environment

Temp: -217 °C

Axial Tilt: 9.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 72,439,383 km

• M1: 65,973 km (0.119 R)
• M2: 327,919 km (0.048 R)
• M3: 883,974 km (0.105 R)
• M4: 1,236,726 km (0.037 R)
• M5: 1,528,142 km (0.063 R)
• M6: 1,955,843 km (0.116 R)
• M7: 2,634,718 km (0.107 R)
• M8: 5,361,887 km (0.103 R)
• M9: 6,825,104 km (0.086 R)
• M10: 7,465,383 km (0.053 R)
• M11: 8,535,755 km (0.063 R)
• M12: 16,328,308 km (0.067 R)
• M13: 16,892,292 km (0.087 R)
• M14: 17,527,485 km (0.068 R)
• M15: 19,154,063 km (0.118 R)
• M16: 24,123,105 km (0.103 R)

Planet 10 - Ice Giant

Semi-Major Axis: 10.5 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 474.6

Radius: 6.6

Gravity: 10.9 G

Time & Orbit

Eccentricity (e): 0.029

Orbit Range: 10.2 AU - 10.8 AU

Year: 22320 Days

Day: 17.6 Hours

Environment

Temp: -225 °C

Axial Tilt: 3.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 72,439,383 km

• M1: 82,728 km (0.068 R)
• M2: 413,040 km (0.063 R)
• M3: 1,443,919 km (0.104 R)
• M4: 3,429,980 km (0.091 R)
• M5: 5,481,266 km (0.101 R)
• M6: 7,739,147 km (0.11 R)
• M7: 8,184,649 km (0.105 R)
• M8: 9,018,657 km (0.065 R)
• M9: 9,400,730 km (0.108 R)
• M10: 10,080,952 km (0.108 R)
• M11: 10,374,014 km (0.085 R)
• M12: 10,732,899 km (0.064 R)
• M13: 12,586,118 km (0.116 R)
• M14: 14,568,140 km (0.095 R)
• M15: 18,261,113 km (0.106 R)
• M16: 20,415,322 km (0.073 R)
• M17: 23,955,556 km (0.114 R)
• M18: 25,979,615 km (0.113 R)
• M19: 32,858,873 km (0.108 R)
• M20: 33,244,387 km (0.088 R)
• M21: 35,352,221 km (0.095 R)
• M22: 37,828,066 km (0.117 R)
• M23: 41,905,356 km (0.078 R)
• M24: 43,894,110 km (0.106 R)
• M25: 47,075,458 km (0.067 R)
• M26: 47,565,541 km (0.09 R)
• M27: 66,735,311 km (0.097 R)

Kuiper Belt

Range: 30 - 52 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 153 - 14,262 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit