🌌 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: 1.59

Radius: 1.2

Gravity: 1.1 G

Time & Orbit

Eccentricity (e): 0.021

Orbit Range: 0.52 AU - 0.54 AU

Year: 245 Days

Day: 47.5 Hours

Environment

Temp: -116 °C

Axial Tilt: 34.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.71 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 140.9

Radius: 10.3

Gravity: 1.33 G

Time & Orbit

Eccentricity (e): 0.019

Orbit Range: 0.7 AU - 0.72 AU

Year: 380 Days

Day: 10.2 Hours

Environment

Temp: -132 °C

Axial Tilt: 8.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 66,131,851 km

• M1: 128,056 km (0.062 R)
• M2: 451,187 km (0.116 R)
• M3: 899,981 km (0.076 R)
• M4: 1,508,844 km (0.102 R)
• M5: 2,367,685 km (0.094 R)
• M6: 2,687,975 km (0.062 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.75 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 543.1

Radius: 14.4

Gravity: 2.62 G

Time & Orbit

Eccentricity (e): 0.001

Orbit Range: 1.75 AU - 1.75 AU

Year: 1472 Days

Day: 11.2 Hours

Environment

Temp: -182 °C

Axial Tilt: 33.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 66,131,851 km

• M1: 179,069 km (0.097 R)
• M2: 701,614 km (0.045 R)
• M3: 2,389,078 km (0.101 R)
• M4: 3,977,807 km (0.11 R)
• M5: 4,979,365 km (0.099 R)
• M6: 6,680,592 km (0.104 R)
• M7: 10,895,512 km (0.085 R)
• M8: 11,545,964 km (0.063 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.86 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 966.8

Radius: 9.8

Gravity: 10.07 G

Time & Orbit

Eccentricity (e): 0.152

Orbit Range: 2.43 AU - 3.29 AU

Year: 3075 Days

Day: 7.9 Hours

Environment

Temp: -191 °C

Axial Tilt: 0.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 66,131,851 km

• M1: 121,922 km (0.096 R)
• M2: 606,919 km (0.109 R)
• M3: 1,005,746 km (0.116 R)
• M4: 1,366,577 km (0.046 R)
• M5: 1,777,372 km (0.074 R)
• M6: 2,448,319 km (0.1 R)
• M7: 2,851,335 km (0.046 R)
• M8: 3,168,632 km (0.119 R)
• M9: 3,509,716 km (0.104 R)
• M10: 3,896,426 km (0.064 R)
• M11: 4,612,102 km (0.079 R)
• M12: 5,282,151 km (0.097 R)
• M13: 5,959,231 km (0.115 R)
• M14: 6,571,685 km (0.077 R)
• M15: 8,375,386 km (0.098 R)
• M16: 8,735,768 km (0.072 R)
• M17: 9,604,034 km (0.038 R)
• M18: 13,075,602 km (0.064 R)
• M19: 15,897,467 km (0.105 R)
• M20: 16,507,078 km (0.044 R)
• M21: 18,794,280 km (0.102 R)
• M22: 19,918,059 km (0.108 R)
• M23: 24,423,498 km (0.1 R)

Planet 5 - Gas Giant

Semi-Major Axis: 4.09 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 232.2

Radius: 10.7

Gravity: 2.03 G

Time & Orbit

Eccentricity (e): 0.068

Orbit Range: 3.81 AU - 4.37 AU

Year: 5259 Days

Day: 6.4 Hours

Environment

Temp: -208 °C

Axial Tilt: 38.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 66,131,851 km

• M1: 133,292 km (0.105 R)
• M2: 613,202 km (0.079 R)
• M3: 2,092,126 km (0.083 R)
• M4: 2,511,599 km (0.067 R)
• M5: 3,246,872 km (0.112 R)
• M6: 3,873,089 km (0.05 R)
• M7: 4,334,000 km (0.105 R)
• M8: 4,854,750 km (0.063 R)
• M9: 5,467,802 km (0.089 R)
• M10: 5,886,676 km (0.096 R)
• M11: 9,227,047 km (0.101 R)
• M12: 9,898,592 km (0.054 R)
• M13: 11,172,567 km (0.119 R)
• M14: 11,592,189 km (0.036 R)
• M15: 13,283,992 km (0.051 R)
• M16: 16,821,533 km (0.098 R)
• M17: 18,397,397 km (0.076 R)

Planet 6 - Gas Giant

Semi-Major Axis: 5.33 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 838.6

Radius: 14.2

Gravity: 4.16 G

Time & Orbit

Eccentricity (e): 0.14

Orbit Range: 4.58 AU - 6.08 AU

Year: 7824 Days

Day: 9.2 Hours

Environment

Temp: -208 °C

Axial Tilt: 0.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (33)

Outer Limit: 66,131,851 km

• M1: 181,761 km (0.079 R)
• M2: 677,080 km (0.109 R)
• M3: 1,159,383 km (0.09 R)
• M4: 1,706,762 km (0.101 R)
• M5: 2,670,472 km (0.117 R)
• M6: 4,180,812 km (0.084 R)
• M7: 5,246,846 km (0.049 R)
• M8: 6,238,530 km (0.03 R)
• M9: 6,891,376 km (0.115 R)
• M10: 7,390,883 km (0.084 R)
• M11: 8,680,865 km (0.027 R)
• M12: 10,712,255 km (0.038 R)
• M13: 11,490,463 km (0.12 R)
• M14: 11,975,160 km (0.113 R)
• M15: 12,586,267 km (0.03 R)
• M16: 13,276,661 km (0.112 R)
• M17: 14,670,465 km (0.049 R)
• M18: 15,630,734 km (0.103 R)
• M19: 16,428,838 km (0.115 R)
• M20: 17,890,559 km (0.061 R)
• M21: 19,211,359 km (0.117 R)
• M22: 19,665,687 km (0.086 R)
• M23: 21,312,909 km (0.078 R)
• M24: 21,964,109 km (0.112 R)
• M25: 25,240,003 km (0.103 R)
• M26: 26,525,049 km (0.117 R)
• M27: 27,183,728 km (0.107 R)
• M28: 27,853,328 km (0.079 R)
• M29: 32,852,740 km (0.117 R)
• M30: 37,119,420 km (0.083 R)
• M31: 39,874,116 km (0.112 R)
• M32: 40,490,608 km (0.083 R)
• M33: 43,149,112 km (0.103 R)

Planet 7 - Ice Giant

Semi-Major Axis: 7.32 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 788.4

Radius: 8

Gravity: 12.32 G

Time & Orbit

Eccentricity (e): 0.038

Orbit Range: 7.04 AU - 7.6 AU

Year: 12592 Days

Day: 18 Hours

Environment

Temp: -225 °C

Axial Tilt: 18.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (29)

Outer Limit: 66,131,851 km

• M1: 99,782 km (0.094 R)
• M2: 352,752 km (0.067 R)
• M3: 680,670 km (0.102 R)
• M4: 948,899 km (0.097 R)
• M5: 1,276,219 km (0.106 R)
• M6: 1,570,329 km (0.05 R)
• M7: 1,892,563 km (0.108 R)
• M8: 2,220,182 km (0.035 R)
• M9: 2,649,827 km (0.044 R)
• M10: 3,013,649 km (0.078 R)
• M11: 4,620,181 km (0.114 R)
• M12: 4,879,733 km (0.103 R)
• M13: 5,499,517 km (0.118 R)
• M14: 6,016,976 km (0.108 R)
• M15: 9,104,377 km (0.071 R)
• M16: 11,332,787 km (0.075 R)
• M17: 11,627,345 km (0.072 R)
• M18: 17,296,207 km (0.101 R)
• M19: 19,900,107 km (0.12 R)
• M20: 20,415,921 km (0.118 R)
• M21: 21,653,993 km (0.086 R)
• M22: 35,256,179 km (0.101 R)
• M23: 36,905,795 km (0.065 R)
• M24: 38,209,391 km (0.1 R)
• M25: 39,678,442 km (0.039 R)
• M26: 40,495,396 km (0.062 R)
• M27: 41,323,569 km (0.086 R)
• M28: 48,359,606 km (0.115 R)
• M29: 57,529,656 km (0.117 R)

Planet 8 - Ice Giant

Semi-Major Axis: 8.27 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 236.4

Radius: 4.5

Gravity: 11.67 G

Time & Orbit

Eccentricity (e): 0.042

Orbit Range: 7.92 AU - 8.62 AU

Year: 15121 Days

Day: 22.5 Hours

Environment

Temp: -231 °C

Axial Tilt: 7.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (38)

Outer Limit: 66,131,851 km

• M1: 56,698 km (0.045 R)
• M2: 227,090 km (0.117 R)
• M3: 448,345 km (0.108 R)
• M4: 682,914 km (0.06 R)
• M5: 936,483 km (0.081 R)
• M6: 1,080,097 km (0.097 R)
• M7: 1,386,623 km (0.114 R)
• M8: 1,779,467 km (0.091 R)
• M9: 2,018,524 km (0.042 R)
• M10: 2,782,371 km (0.077 R)
• M11: 3,194,962 km (0.094 R)
• M12: 3,773,157 km (0.096 R)
• M13: 4,033,607 km (0.098 R)
• M14: 4,195,622 km (0.082 R)
• M15: 4,475,220 km (0.059 R)
• M16: 5,292,473 km (0.117 R)
• M17: 6,063,351 km (0.037 R)
• M18: 7,138,661 km (0.066 R)
• M19: 7,950,379 km (0.065 R)
• M20: 9,468,797 km (0.114 R)
• M21: 12,373,838 km (0.096 R)
• M22: 13,242,404 km (0.042 R)
• M23: 17,693,239 km (0.099 R)
• M24: 19,398,954 km (0.094 R)
• M25: 19,552,292 km (0.087 R)
• M26: 20,568,510 km (0.105 R)
• M27: 21,701,864 km (0.06 R)
• M28: 25,718,268 km (0.087 R)
• M29: 28,095,976 km (0.12 R)
• M30: 29,186,993 km (0.083 R)
• M31: 33,282,833 km (0.083 R)
• M32: 34,279,604 km (0.119 R)
• M33: 34,841,793 km (0.029 R)
• M34: 35,068,434 km (0.119 R)
• M35: 37,507,627 km (0.079 R)
• M36: 42,591,262 km (0.091 R)
• M37: 42,850,365 km (0.119 R)
• M38: 43,110,516 km (0.118 R)

Planet 9 - Ice Giant

Semi-Major Axis: 9.8 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 472.8

Radius: 5

Gravity: 18.91 G

Time & Orbit

Eccentricity (e): 0.019

Orbit Range: 9.61 AU - 9.99 AU

Year: 19506 Days

Day: 20.6 Hours

Environment

Temp: -229 °C

Axial Tilt: 2.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (30)

Outer Limit: 66,131,851 km

• M1: 63,729 km (0.101 R)
• M2: 239,656 km (0.076 R)
• M3: 416,331 km (0.096 R)
• M4: 575,054 km (0.107 R)
• M5: 1,528,142 km (0.105 R)
• M6: 1,810,583 km (0.105 R)
• M7: 2,147,029 km (0.11 R)
• M8: 2,330,286 km (0.108 R)
• M9: 2,568,446 km (0.112 R)
• M10: 3,301,475 km (0.081 R)
• M11: 4,041,985 km (0.117 R)
• M12: 4,615,842 km (0.083 R)
• M13: 6,662,341 km (0.11 R)
• M14: 7,599,721 km (0.081 R)
• M15: 9,622,733 km (0.088 R)
• M16: 10,816,375 km (0.099 R)
• M17: 11,479,542 km (0.075 R)
• M18: 13,357,444 km (0.108 R)
• M19: 17,544,838 km (0.054 R)
• M20: 19,579,669 km (0.091 R)
• M21: 19,844,606 km (0.07 R)
• M22: 22,146,319 km (0.07 R)
• M23: 26,296,164 km (0.116 R)
• M24: 26,943,923 km (0.071 R)
• M25: 28,836,785 km (0.089 R)
• M26: 39,642,987 km (0.112 R)
• M27: 50,841,734 km (0.069 R)
• M28: 52,523,064 km (0.073 R)
• M29: 62,819,287 km (0.086 R)
• M30: 63,203,156 km (0.084 R)

Kuiper Belt

Range: 30 - 55 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 324 - 17,194 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit