🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.26 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.51 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.55

Radius: 1.83

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0

Orbit Range: 0.51 AU - 0.51 AU

Year: 235 Days

Day: 16 Hours

Environment

Temp: -118 °C

Axial Tilt: 10.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.81 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 836.5

Radius: 8.4

Gravity: 11.86 G

Time & Orbit

Eccentricity (e): 0.039

Orbit Range: 0.78 AU - 0.84 AU

Year: 471 Days

Day: 14.7 Hours

Environment

Temp: -139 °C

Axial Tilt: 42.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 57,988,717 km

• M1: 105,915 km (0.072 R)
• M2: 386,411 km (0.068 R)
• M3: 679,922 km (0.089 R)
• M4: 1,083,238 km (0.092 R)
• M5: 1,489,396 km (0.037 R)
• M6: 1,918,443 km (0.111 R)
• M7: 2,725,673 km (0.102 R)
• M8: 3,082,763 km (0.081 R)
• M9: 3,483,386 km (0.108 R)
• M10: 3,756,103 km (0.086 R)
• M11: 4,661,769 km (0.066 R)
• M12: 5,010,182 km (0.103 R)
• M13: 5,341,841 km (0.085 R)
• M14: 6,561,512 km (0.076 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.14 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 428.2

Radius: 14.5

Gravity: 2.04 G

Time & Orbit

Eccentricity (e): 0.088

Orbit Range: 1.04 AU - 1.24 AU

Year: 786 Days

Day: 9.9 Hours

Environment

Temp: -157 °C

Axial Tilt: 6.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 57,988,717 km

• M1: 180,415 km (0.085 R)
• M2: 780,302 km (0.087 R)
• M3: 1,401,433 km (0.057 R)
• M4: 1,870,871 km (0.077 R)
• M5: 2,358,261 km (0.091 R)
• M6: 3,389,439 km (0.105 R)
• M7: 3,938,014 km (0.049 R)
• M8: 4,422,562 km (0.119 R)
• M9: 4,930,447 km (0.077 R)
• M10: 6,374,066 km (0.091 R)
• M11: 6,941,192 km (0.025 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.3 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 247.7

Radius: 14.6

Gravity: 1.16 G

Time & Orbit

Eccentricity (e): 0.235

Orbit Range: 0.99 AU - 1.61 AU

Year: 957 Days

Day: 11.9 Hours

Environment

Temp: -179 °C

Axial Tilt: 47.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 57,988,717 km

• M1: 203,304 km (0.098 R)
• M2: 820,395 km (0.079 R)
• M3: 1,290,282 km (0.091 R)
• M4: 3,562,823 km (0.113 R)
• M5: 5,710,600 km (0.118 R)
• M6: 6,478,037 km (0.05 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.82 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 223.3

Radius: 8.9

Gravity: 2.82 G

Time & Orbit

Eccentricity (e): 0.25

Orbit Range: 1.37 AU - 2.28 AU

Year: 1585 Days

Day: 11.4 Hours

Environment

Temp: -187 °C

Axial Tilt: 11.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 57,988,717 km

• M1: 110,702 km (0.088 R)
• M2: 643,121 km (0.081 R)
• M3: 975,378 km (0.084 R)
• M4: 1,362,986 km (0.1 R)
• M5: 2,052,632 km (0.107 R)
• M6: 2,662,094 km (0.089 R)
• M7: 3,529,612 km (0.064 R)
• M8: 6,081,153 km (0.078 R)
• M9: 6,444,377 km (0.101 R)
• M10: 7,524,773 km (0.114 R)
• M11: 8,775,112 km (0.103 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.13 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 89.9

Radius: 10.2

Gravity: 0.86 G

Time & Orbit

Eccentricity (e): 0.062

Orbit Range: 2 AU - 2.26 AU

Year: 2007 Days

Day: 9 Hours

Environment

Temp: -182 °C

Axial Tilt: 37.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 57,988,717 km

• M1: 134,339 km (0.054 R)
• M2: 578,046 km (0.105 R)
• M3: 1,002,605 km (0.109 R)
• M4: 1,344,286 km (0.119 R)
• M5: 1,947,914 km (0.097 R)
• M6: 2,984,029 km (0.078 R)
• M7: 3,680,108 km (0.055 R)
• M8: 5,284,844 km (0.101 R)
• M9: 7,357,223 km (0.107 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.22 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 164.8

Radius: 10

Gravity: 1.65 G

Time & Orbit

Eccentricity (e): 0.166

Orbit Range: 2.69 AU - 3.75 AU

Year: 3731 Days

Day: 9.4 Hours

Environment

Temp: -195 °C

Axial Tilt: 36.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 57,988,717 km

• M1: 129,402 km (0.102 R)
• M2: 460,761 km (0.114 R)
• M3: 792,719 km (0.091 R)
• M4: 1,317,508 km (0.077 R)
• M5: 1,787,695 km (0.114 R)
• M6: 2,405,983 km (0.103 R)
• M7: 2,815,731 km (0.087 R)
• M8: 5,563,246 km (0.086 R)
• M9: 7,230,514 km (0.089 R)
• M10: 10,964,776 km (0.073 R)
• M11: 12,691,584 km (0.068 R)

Asteroid Belt

Center: 4.66 AU

Composition

Type: Outer System (Icy)

A dense region of planetesimals and debris.

Boundary

Planet 8 - Ice Giant

Semi-Major Axis: 6.09 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 96.2

Radius: 5.7

Gravity: 2.96 G

Time & Orbit

Eccentricity (e): 0.036

Orbit Range: 5.87 AU - 6.31 AU

Year: 9704 Days

Day: 25 Hours

Environment

Temp: -219 °C

Axial Tilt: 19.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 57,988,717 km

• M1: 72,405 km (0.056 R)
• M2: 566,378 km (0.064 R)
• M3: 853,905 km (0.094 R)
• M4: 1,188,106 km (0.119 R)
• M5: 1,438,832 km (0.072 R)
• M6: 2,202,230 km (0.045 R)
• M7: 3,078,275 km (0.105 R)
• M8: 3,455,262 km (0.105 R)
• M9: 4,211,030 km (0.091 R)
• M10: 4,970,838 km (0.097 R)
• M11: 6,696,449 km (0.103 R)
• M12: 10,425,775 km (0.063 R)
• M13: 11,361,509 km (0.072 R)
• M14: 12,584,771 km (0.04 R)
• M15: 14,814,528 km (0.111 R)
• M16: 15,666,936 km (0.093 R)
• M17: 16,834,847 km (0.099 R)
• M18: 17,821,744 km (0.103 R)
• M19: 18,059,605 km (0.112 R)
• M20: 18,785,453 km (0.085 R)
• M21: 19,530,600 km (0.105 R)
• M22: 20,166,541 km (0.051 R)
• M23: 24,202,093 km (0.113 R)

Planet 9 - Ice Giant

Semi-Major Axis: 9.11 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 384.8

Radius: 3.4

Gravity: 33.29 G

Time & Orbit

Eccentricity (e): 0.002

Orbit Range: 9.09 AU - 9.13 AU

Year: 17754 Days

Day: 22.3 Hours

Environment

Temp: -228 °C

Axial Tilt: 112.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (39)

Outer Limit: 57,988,717 km

• M1: 42,486 km (0.068 R)
• M2: 166,652 km (0.11 R)
• M3: 363,672 km (0.069 R)
• M4: 563,685 km (0.119 R)
• M5: 1,025,942 km (0.087 R)
• M6: 1,195,586 km (0.119 R)
• M7: 1,314,367 km (0.093 R)
• M8: 1,718,880 km (0.084 R)
• M9: 2,105,889 km (0.1 R)
• M10: 2,906,687 km (0.107 R)
• M11: 3,147,240 km (0.091 R)
• M12: 3,272,453 km (0.117 R)
• M13: 3,532,754 km (0.061 R)
• M14: 3,640,763 km (0.063 R)
• M15: 3,920,212 km (0.088 R)
• M16: 6,985,622 km (0.057 R)
• M17: 7,774,302 km (0.05 R)
• M18: 10,604,993 km (0.084 R)
• M19: 12,684,254 km (0.077 R)
• M20: 13,852,613 km (0.108 R)
• M21: 14,670,016 km (0.09 R)
• M22: 15,447,177 km (0.046 R)
• M23: 16,929,841 km (0.073 R)
• M24: 17,942,918 km (0.053 R)
• M25: 18,102,240 km (0.107 R)
• M26: 18,749,101 km (0.077 R)
• M27: 19,832,788 km (0.091 R)
• M28: 20,869,651 km (0.032 R)
• M29: 24,390,736 km (0.102 R)
• M30: 25,379,129 km (0.049 R)
• M31: 28,395,770 km (0.09 R)
• M32: 32,817,285 km (0.109 R)
• M33: 35,378,101 km (0.118 R)
• M34: 39,936,348 km (0.06 R)
• M35: 40,072,034 km (0.104 R)
• M36: 44,870,834 km (0.104 R)
• M37: 48,479,584 km (0.095 R)
• M38: 48,788,653 km (0.068 R)
• M39: 56,438,190 km (0.1 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: 326 - 16,453 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit