🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.32 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.63 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.58

Radius: 1.46

Gravity: 1.21 G

Time & Orbit

Eccentricity (e): 0.048

Orbit Range: 0.6 AU - 0.66 AU

Year: 318 Days

Day: 32.9 Hours

Environment

Temp: -123 °C

Axial Tilt: 43 °

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: 231.7

Radius: 13

Gravity: 1.37 G

Time & Orbit

Eccentricity (e): 0.001

Orbit Range: 0.81 AU - 0.81 AU

Year: 464 Days

Day: 6.6 Hours

Environment

Temp: -141 °C

Axial Tilt: 7.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 53,135,172 km

• M1: 161,715 km (0.097 R)
• M2: 649,704 km (0.092 R)
• M3: 1,259,165 km (0.116 R)
• M4: 1,690,606 km (0.063 R)
• M5: 2,507,709 km (0.103 R)
• M6: 3,115,376 km (0.04 R)
• M7: 3,617,725 km (0.103 R)
• M8: 4,077,440 km (0.099 R)

Asteroid Belt

Center: 1.3 AU

Composition

Type: Outer System (Icy)

A dense region of planetesimals and debris.

Boundary

Planet 3 - Gas Giant

Semi-Major Axis: 1.79 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 15.8

Radius: 8.8

Gravity: 0.2 G

Time & Orbit

Eccentricity (e): 0.066

Orbit Range: 1.67 AU - 1.91 AU

Year: 1523 Days

Day: 11 Hours

Environment

Temp: -181 °C

Axial Tilt: 22.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (4)

Outer Limit: 53,135,172 km

• M1: 307,274 km (0.084 R)
• M2: 631,901 km (0.11 R)
• M3: 1,231,490 km (0.074 R)
• M4: 2,686,329 km (0.035 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.22 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 727.4

Radius: 10.3

Gravity: 6.86 G

Time & Orbit

Eccentricity (e): 0.112

Orbit Range: 1.97 AU - 2.47 AU

Year: 2103 Days

Day: 13 Hours

Environment

Temp: -190 °C

Axial Tilt: 32.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 53,135,172 km

• M1: 128,056 km (0.116 R)
• M2: 504,893 km (0.06 R)
• M3: 851,511 km (0.112 R)
• M4: 1,234,930 km (0.12 R)
• M5: 2,098,559 km (0.105 R)
• M6: 3,512,259 km (0.118 R)
• M7: 5,501,910 km (0.072 R)
• M8: 5,940,681 km (0.082 R)
• M9: 6,402,789 km (0.076 R)
• M10: 7,574,739 km (0.051 R)
• M11: 7,934,521 km (0.117 R)
• M12: 8,786,033 km (0.08 R)
• M13: 10,448,663 km (0.084 R)
• M14: 11,276,837 km (0.092 R)
• M15: 12,270,616 km (0.085 R)
• M16: 13,582,589 km (0.113 R)
• M17: 13,935,790 km (0.107 R)
• M18: 15,795,291 km (0.073 R)
• M19: 16,936,274 km (0.081 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.25 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 637.7

Radius: 14.6

Gravity: 2.99 G

Time & Orbit

Eccentricity (e): 0

Orbit Range: 3.25 AU - 3.25 AU

Year: 3725 Days

Day: 10.7 Hours

Environment

Temp: -198 °C

Axial Tilt: 17.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 53,135,172 km

• M1: 181,761 km (0.052 R)
• M2: 726,597 km (0.049 R)
• M3: 1,285,046 km (0.077 R)
• M4: 1,912,908 km (0.086 R)
• M5: 2,568,595 km (0.061 R)
• M6: 3,080,819 km (0.112 R)
• M7: 4,010,869 km (0.114 R)
• M8: 4,519,202 km (0.099 R)
• M9: 5,454,638 km (0.065 R)
• M10: 7,033,194 km (0.085 R)
• M11: 7,877,824 km (0.037 R)
• M12: 8,608,759 km (0.09 R)
• M13: 9,308,578 km (0.054 R)
• M14: 10,246,706 km (0.071 R)
• M15: 10,906,433 km (0.055 R)
• M16: 11,815,389 km (0.104 R)
• M17: 13,784,397 km (0.102 R)
• M18: 15,693,116 km (0.118 R)
• M19: 18,787,099 km (0.119 R)
• M20: 20,157,116 km (0.053 R)
• M21: 22,609,923 km (0.053 R)
• M22: 23,446,624 km (0.114 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.09 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 182.8

Radius: 12.1

Gravity: 1.25 G

Time & Orbit

Eccentricity (e): 0.103

Orbit Range: 3.67 AU - 4.51 AU

Year: 5259 Days

Day: 5.6 Hours

Environment

Temp: -217 °C

Axial Tilt: 15.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 53,135,172 km

• M1: 150,495 km (0.034 R)
• M2: 652,396 km (0.113 R)
• M3: 1,128,866 km (0.116 R)
• M4: 1,781,860 km (0.082 R)
• M5: 2,399,101 km (0.034 R)
• M6: 2,988,965 km (0.118 R)
• M7: 3,826,863 km (0.074 R)
• M8: 6,878,809 km (0.09 R)
• M9: 7,786,868 km (0.086 R)
• M10: 9,548,084 km (0.109 R)
• M11: 10,215,590 km (0.101 R)
• M12: 10,795,431 km (0.095 R)
• M13: 11,810,453 km (0.099 R)
• M14: 12,843,725 km (0.096 R)
• M15: 13,382,577 km (0.067 R)
• M16: 16,202,347 km (0.116 R)
• M17: 16,672,982 km (0.117 R)
• M18: 17,696,381 km (0.065 R)
• M19: 18,251,539 km (0.116 R)
• M20: 18,933,107 km (0.05 R)

Planet 7 - Ice Giant

Semi-Major Axis: 6.56 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 931.6

Radius: 6.8

Gravity: 20.15 G

Time & Orbit

Eccentricity (e): 0.046

Orbit Range: 6.26 AU - 6.86 AU

Year: 10683 Days

Day: 21.3 Hours

Environment

Temp: -231 °C

Axial Tilt: 20.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (30)

Outer Limit: 53,135,172 km

• M1: 84,523 km (0.088 R)
• M2: 707,448 km (0.101 R)
• M3: 929,751 km (0.1 R)
• M4: 1,275,172 km (0.089 R)
• M5: 1,507,199 km (0.043 R)
• M6: 1,816,567 km (0.084 R)
• M7: 2,112,322 km (0.076 R)
• M8: 2,399,849 km (0.091 R)
• M9: 4,429,144 km (0.081 R)
• M10: 4,677,327 km (0.106 R)
• M11: 4,967,547 km (0.115 R)
• M12: 5,304,292 km (0.087 R)
• M13: 9,104,227 km (0.041 R)
• M14: 10,952,359 km (0.055 R)
• M15: 11,292,545 km (0.107 R)
• M16: 13,613,107 km (0.081 R)
• M17: 13,874,455 km (0.114 R)
• M18: 14,747,358 km (0.091 R)
• M19: 15,871,137 km (0.088 R)
• M20: 20,339,327 km (0.026 R)
• M21: 22,176,987 km (0.103 R)
• M22: 22,813,376 km (0.08 R)
• M23: 23,368,534 km (0.082 R)
• M24: 26,685,418 km (0.054 R)
• M25: 34,962,668 km (0.11 R)
• M26: 37,462,000 km (0.065 R)
• M27: 43,657,296 km (0.049 R)
• M28: 45,816,442 km (0.113 R)
• M29: 46,109,505 km (0.102 R)
• M30: 50,502,147 km (0.063 R)

Planet 8 - Ice Giant

Semi-Major Axis: 6.58 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 810.2

Radius: 5.7

Gravity: 24.94 G

Time & Orbit

Eccentricity (e): 0.154

Orbit Range: 5.57 AU - 7.59 AU

Year: 10732 Days

Day: 18.3 Hours

Environment

Temp: -228 °C

Axial Tilt: 43.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (32)

Outer Limit: 53,135,172 km

• M1: 71,059 km (0.051 R)
• M2: 272,268 km (0.082 R)
• M3: 482,752 km (0.099 R)
• M4: 691,591 km (0.118 R)
• M5: 961,166 km (0.057 R)
• M6: 1,138,739 km (0.059 R)
• M7: 1,561,652 km (0.112 R)
• M8: 1,809,685 km (0.093 R)
• M9: 2,444,878 km (0.1 R)
• M10: 3,492,512 km (0.054 R)
• M11: 4,621,976 km (0.116 R)
• M12: 5,371,910 km (0.035 R)
• M13: 6,585,298 km (0.062 R)
• M14: 8,380,323 km (0.033 R)
• M15: 9,641,732 km (0.068 R)
• M16: 10,749,056 km (0.077 R)
• M17: 11,475,503 km (0.074 R)
• M18: 13,213,531 km (0.079 R)
• M19: 15,817,282 km (0.113 R)
• M20: 17,351,857 km (0.086 R)
• M21: 17,807,981 km (0.111 R)
• M22: 20,713,770 km (0.082 R)
• M23: 23,181,387 km (0.059 R)
• M24: 23,456,946 km (0.107 R)
• M25: 32,315,085 km (0.116 R)
• M26: 37,859,182 km (0.105 R)
• M27: 38,497,366 km (0.061 R)
• M28: 44,710,316 km (0.104 R)
• M29: 45,854,889 km (0.072 R)
• M30: 47,608,026 km (0.096 R)
• M31: 52,185,721 km (0.058 R)
• M32: 52,976,196 km (0.114 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: 320 - 17,817 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit