🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.31 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.61 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.49

Radius: 1.17

Gravity: 1.09 G

Time & Orbit

Eccentricity (e): 0.222

Orbit Range: 0.47 AU - 0.75 AU

Year: 308 Days

Day: 18.8 Hours

Environment

Temp: -128 °C

Axial Tilt: 15.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.79 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 681.7

Radius: 11.3

Gravity: 5.34 G

Time & Orbit

Eccentricity (e): 0.235

Orbit Range: 0.6 AU - 0.98 AU

Year: 453 Days

Day: 12.3 Hours

Environment

Temp: -143 °C

Axial Tilt: 17.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 50,719,027 km

• M1: 143,614 km (0.092 R)
• M2: 515,215 km (0.085 R)
• M3: 1,276,519 km (0.085 R)
• M4: 1,810,882 km (0.114 R)
• M5: 2,331,483 km (0.072 R)
• M6: 2,822,613 km (0.083 R)
• M7: 3,206,780 km (0.095 R)
• M8: 3,588,703 km (0.109 R)
• M9: 4,205,196 km (0.076 R)
• M10: 4,590,411 km (0.119 R)
• M11: 5,236,973 km (0.109 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.8 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 315.5

Radius: 10.3

Gravity: 2.97 G

Time & Orbit

Eccentricity (e): 0.105

Orbit Range: 0.72 AU - 0.88 AU

Year: 462 Days

Day: 13.3 Hours

Environment

Temp: -156 °C

Axial Tilt: 11.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 50,719,027 km

• M1: 128,056 km (0.088 R)
• M2: 579,542 km (0.047 R)
• M3: 1,014,423 km (0.06 R)
• M4: 1,407,716 km (0.081 R)
• M5: 1,781,112 km (0.095 R)
• M6: 2,172,161 km (0.067 R)
• M7: 2,583,854 km (0.118 R)
• M8: 3,098,770 km (0.088 R)
• M9: 3,577,334 km (0.051 R)
• M10: 4,042,284 km (0.089 R)
• M11: 4,440,214 km (0.044 R)

Planet 4 - Gas Giant

Semi-Major Axis: 4.65 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 40.6

Radius: 8.7

Gravity: 0.54 G

Time & Orbit

Eccentricity (e): 0.11

Orbit Range: 4.14 AU - 5.16 AU

Year: 6474 Days

Day: 9.3 Hours

Environment

Temp: -213 °C

Axial Tilt: 38.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 50,719,027 km

• M1: 110,403 km (0.098 R)
• M2: 851,810 km (0.1 R)
• M3: 1,282,353 km (0.054 R)
• M4: 1,558,361 km (0.079 R)
• M5: 1,970,952 km (0.118 R)
• M6: 2,571,587 km (0.118 R)
• M7: 3,797,692 km (0.087 R)
• M8: 4,152,837 km (0.039 R)
• M9: 4,787,281 km (0.082 R)
• M10: 6,444,078 km (0.116 R)
• M11: 8,812,960 km (0.104 R)
• M12: 9,858,948 km (0.09 R)
• M13: 10,429,216 km (0.035 R)
• M14: 13,250,482 km (0.086 R)
• M15: 13,615,201 km (0.118 R)

Planet 5 - Gas Giant

Semi-Major Axis: 4.95 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 819.3

Radius: 14.6

Gravity: 3.84 G

Time & Orbit

Eccentricity (e): 0.138

Orbit Range: 4.27 AU - 5.63 AU

Year: 7111 Days

Day: 11.5 Hours

Environment

Temp: -221 °C

Axial Tilt: 0.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 50,719,027 km

• M1: 181,612 km (0.075 R)
• M2: 866,620 km (0.106 R)
• M3: 2,002,218 km (0.062 R)
• M4: 3,086,653 km (0.091 R)
• M5: 4,451,883 km (0.098 R)
• M6: 5,921,383 km (0.106 R)
• M7: 6,395,608 km (0.069 R)
• M8: 7,933,474 km (0.071 R)
• M9: 9,117,691 km (0.078 R)
• M10: 10,128,374 km (0.088 R)
• M11: 11,161,647 km (0.11 R)
• M12: 16,533,856 km (0.073 R)
• M13: 19,926,736 km (0.111 R)
• M14: 24,615,582 km (0.073 R)
• M15: 27,030,390 km (0.078 R)
• M16: 31,196,392 km (0.101 R)
• M17: 32,119,560 km (0.115 R)
• M18: 32,850,196 km (0.1 R)

Planet 6 - Ice Giant

Semi-Major Axis: 6.45 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 944.9

Radius: 7.8

Gravity: 15.53 G

Time & Orbit

Eccentricity (e): 0.077

Orbit Range: 5.95 AU - 6.95 AU

Year: 10577 Days

Day: 16.2 Hours

Environment

Temp: -222 °C

Axial Tilt: 43.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (34)

Outer Limit: 50,719,027 km

• M1: 99,333 km (0.1 R)
• M2: 378,333 km (0.101 R)
• M3: 646,562 km (0.087 R)
• M4: 1,297,911 km (0.089 R)
• M5: 2,120,400 km (0.042 R)
• M6: 2,830,242 km (0.078 R)
• M7: 3,326,757 km (0.072 R)
• M8: 3,770,166 km (0.1 R)
• M9: 4,077,589 km (0.114 R)
• M10: 4,936,730 km (0.085 R)
• M11: 8,516,756 km (0.1 R)
• M12: 10,176,096 km (0.09 R)
• M13: 13,338,894 km (0.113 R)
• M14: 13,922,924 km (0.074 R)
• M15: 14,188,012 km (0.066 R)
• M16: 15,282,021 km (0.112 R)
• M17: 16,138,618 km (0.039 R)
• M18: 18,103,886 km (0.064 R)
• M19: 23,799,226 km (0.067 R)
• M20: 24,465,385 km (0.073 R)
• M21: 26,742,415 km (0.11 R)
• M22: 32,752,808 km (0.042 R)
• M23: 34,414,990 km (0.039 R)
• M24: 35,266,800 km (0.09 R)
• M25: 35,636,158 km (0.109 R)
• M26: 42,039,844 km (0.086 R)
• M27: 42,316,450 km (0.106 R)
• M28: 45,876,431 km (0.084 R)
• M29: 46,169,643 km (0.071 R)
• M30: 46,907,908 km (0.115 R)
• M31: 51,188,801 km (0.114 R)
• M32: 51,504,153 km (0.039 R)
• M33: 54,237,456 km (0.098 R)
• M34: 55,224,802 km (0.076 R)

Planet 7 - Ice Giant

Semi-Major Axis: 7.19 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 609.2

Radius: 5.5

Gravity: 20.14 G

Time & Orbit

Eccentricity (e): 0.134

Orbit Range: 6.23 AU - 8.15 AU

Year: 12448 Days

Day: 17.6 Hours

Environment

Temp: -231 °C

Axial Tilt: 21.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (34)

Outer Limit: 50,719,027 km

• M1: 68,366 km (0.114 R)
• M2: 251,773 km (0.073 R)
• M3: 501,003 km (0.11 R)
• M4: 675,135 km (0.11 R)
• M5: 993,928 km (0.12 R)
• M6: 1,435,990 km (0.111 R)
• M7: 1,880,296 km (0.11 R)
• M8: 2,125,487 km (0.094 R)
• M9: 2,723,280 km (0.118 R)
• M10: 5,020,654 km (0.079 R)
• M11: 6,374,365 km (0.116 R)
• M12: 6,807,750 km (0.117 R)
• M13: 7,430,077 km (0.104 R)
• M14: 8,883,421 km (0.083 R)
• M15: 10,570,436 km (0.1 R)
• M16: 11,460,693 km (0.104 R)
• M17: 11,690,774 km (0.113 R)
• M18: 12,460,156 km (0.089 R)
• M19: 13,074,405 km (0.111 R)
• M20: 14,563,802 km (0.088 R)
• M21: 15,593,932 km (0.111 R)
• M22: 16,671,636 km (0.083 R)
• M23: 19,704,882 km (0.091 R)
• M24: 20,707,337 km (0.106 R)
• M25: 22,452,995 km (0.05 R)
• M26: 27,858,714 km (0.104 R)
• M27: 28,066,356 km (0.068 R)
• M28: 28,907,245 km (0.076 R)
• M29: 37,750,723 km (0.062 R)
• M30: 41,822,329 km (0.106 R)
• M31: 45,743,139 km (0.119 R)
• M32: 46,177,123 km (0.104 R)
• M33: 49,749,221 km (0.097 R)
• M34: 50,670,145 km (0.1 R)

Planet 8 - Ice Giant

Semi-Major Axis: 8.78 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 287.6

Radius: 6.4

Gravity: 7.02 G

Time & Orbit

Eccentricity (e): 0.028

Orbit Range: 8.53 AU - 9.03 AU

Year: 16798 Days

Day: 16.5 Hours

Environment

Temp: -234 °C

Axial Tilt: 6.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 50,719,027 km

• M1: 79,586 km (0.1 R)
• M2: 319,691 km (0.081 R)
• M3: 618,737 km (0.06 R)
• M4: 990,338 km (0.042 R)
• M5: 1,227,301 km (0.1 R)
• M6: 2,177,098 km (0.051 R)
• M7: 2,501,725 km (0.075 R)
• M8: 3,544,273 km (0.119 R)
• M9: 4,247,832 km (0.099 R)
• M10: 4,849,664 km (0.056 R)
• M11: 6,296,275 km (0.106 R)
• M12: 7,036,785 km (0.107 R)
• M13: 9,606,577 km (0.09 R)
• M14: 10,321,954 km (0.106 R)
• M15: 13,604,879 km (0.082 R)
• M16: 13,986,503 km (0.088 R)
• M17: 14,704,573 km (0.051 R)
• M18: 20,516,899 km (0.119 R)
• M19: 20,766,728 km (0.093 R)
• M20: 21,443,060 km (0.095 R)
• M21: 25,909,902 km (0.114 R)
• M22: 29,560,988 km (0.091 R)
• M23: 30,093,856 km (0.056 R)
• M24: 41,207,182 km (0.061 R)
• M25: 49,215,007 km (0.094 R)

Kuiper Belt

Range: 30 - 51 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 432 - 16,673 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit