🌌 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 - Gas Giant

Semi-Major Axis: 0.63 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 348

Radius: 12.1

Gravity: 2.38 G

Time & Orbit

Eccentricity (e): 0.046

Orbit Range: 0.6 AU - 0.66 AU

Year: 339 Days

Day: 10.1 Hours

Environment

Temp: -149 °C

Axial Tilt: 19.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 39,874,687 km

• M1: 150,495 km (0.105 R)
• M2: 609,761 km (0.099 R)
• M3: 1,065,286 km (0.059 R)
• M4: 1,707,061 km (0.119 R)
• M5: 2,177,547 km (0.082 R)
• M6: 3,212,913 km (0.094 R)
• M7: 3,813,998 km (0.092 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.73 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 217.1

Radius: 10.9

Gravity: 1.83 G

Time & Orbit

Eccentricity (e): 0.175

Orbit Range: 0.6 AU - 0.86 AU

Year: 423 Days

Day: 12.2 Hours

Environment

Temp: -167 °C

Axial Tilt: 3.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (5)

Outer Limit: 39,874,687 km

• M1: 141,370 km (0.087 R)
• M2: 646,861 km (0.086 R)
• M3: 1,518,718 km (0.058 R)
• M4: 1,878,201 km (0.096 R)
• M5: 3,109,841 km (0.116 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.76 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 305

Radius: 8.3

Gravity: 4.43 G

Time & Orbit

Eccentricity (e): 0.227

Orbit Range: 0.59 AU - 0.93 AU

Year: 449 Days

Day: 9.6 Hours

Environment

Temp: -162 °C

Axial Tilt: 23.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 39,874,687 km

• M1: 103,223 km (0.097 R)
• M2: 379,829 km (0.106 R)
• M3: 648,507 km (0.099 R)
• M4: 914,641 km (0.037 R)
• M5: 1,647,970 km (0.039 R)
• M6: 2,003,863 km (0.11 R)
• M7: 2,462,830 km (0.059 R)
• M8: 2,784,166 km (0.107 R)
• M9: 3,071,543 km (0.115 R)
• M10: 3,345,906 km (0.112 R)
• M11: 3,800,534 km (0.042 R)
• M12: 4,295,553 km (0.09 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.75 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 437.5

Radius: 9.8

Gravity: 4.56 G

Time & Orbit

Eccentricity (e): 0.058

Orbit Range: 2.59 AU - 2.91 AU

Year: 3093 Days

Day: 10.4 Hours

Environment

Temp: -208 °C

Axial Tilt: 16.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 39,874,687 km

• M1: 122,521 km (0.089 R)
• M2: 538,104 km (0.096 R)
• M3: 939,923 km (0.111 R)
• M4: 1,482,066 km (0.067 R)
• M5: 2,301,713 km (0.073 R)
• M6: 3,451,372 km (0.114 R)
• M7: 4,255,012 km (0.085 R)
• M8: 4,679,421 km (0.111 R)
• M9: 5,085,280 km (0.083 R)
• M10: 5,967,908 km (0.115 R)
• M11: 6,473,399 km (0.109 R)
• M12: 6,778,878 km (0.117 R)
• M13: 8,226,686 km (0.101 R)
• M14: 8,853,202 km (0.12 R)
• M15: 9,906,969 km (0.102 R)
• M16: 10,847,192 km (0.102 R)
• M17: 11,519,784 km (0.119 R)
• M18: 12,731,078 km (0.106 R)
• M19: 13,212,185 km (0.097 R)
• M20: 15,258,384 km (0.058 R)
• M21: 15,651,976 km (0.115 R)
• M22: 18,543,853 km (0.099 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.56 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 791.7

Radius: 13.2

Gravity: 4.54 G

Time & Orbit

Eccentricity (e): 0.12

Orbit Range: 3.13 AU - 3.99 AU

Year: 4556 Days

Day: 12.7 Hours

Environment

Temp: -219 °C

Axial Tilt: 34.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 39,874,687 km

• M1: 164,857 km (0.056 R)
• M2: 610,509 km (0.108 R)
• M3: 1,209,349 km (0.114 R)
• M4: 1,880,894 km (0.076 R)
• M5: 2,972,510 km (0.084 R)
• M6: 3,419,359 km (0.089 R)
• M7: 4,450,088 km (0.074 R)
• M8: 6,690,615 km (0.07 R)
• M9: 8,992,926 km (0.058 R)
• M10: 14,004,605 km (0.071 R)
• M11: 15,788,559 km (0.066 R)
• M12: 17,038,599 km (0.037 R)
• M13: 21,756,318 km (0.118 R)
• M14: 27,112,968 km (0.066 R)
• M15: 28,126,494 km (0.098 R)
• M16: 28,990,422 km (0.07 R)

Planet 6 - Ice Giant

Semi-Major Axis: 5.77 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 150.3

Radius: 3

Gravity: 16.7 G

Time & Orbit

Eccentricity (e): 0.155

Orbit Range: 4.88 AU - 6.66 AU

Year: 9401 Days

Day: 24.9 Hours

Environment

Temp: -223 °C

Axial Tilt: 41.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 39,874,687 km

• M1: 37,998 km (0.117 R)
• M2: 166,353 km (0.066 R)
• M3: 301,290 km (0.038 R)
• M4: 558,748 km (0.075 R)
• M5: 792,869 km (0.073 R)
• M6: 1,069,625 km (0.086 R)
• M7: 1,256,024 km (0.113 R)
• M8: 6,264,411 km (0.071 R)
• M9: 7,471,815 km (0.075 R)
• M10: 11,447,528 km (0.081 R)
• M11: 13,439,723 km (0.098 R)
• M12: 13,958,529 km (0.105 R)
• M13: 14,169,761 km (0.117 R)

Planet 7 - Ice Giant

Semi-Major Axis: 7.18 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 217.5

Radius: 7.4

Gravity: 3.97 G

Time & Orbit

Eccentricity (e): 0.249

Orbit Range: 5.39 AU - 8.97 AU

Year: 13049 Days

Day: 20.9 Hours

Environment

Temp: -224 °C

Axial Tilt: 34.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 39,874,687 km

• M1: 100,081 km (0.04 R)
• M2: 825,182 km (0.086 R)
• M3: 1,864,588 km (0.12 R)
• M4: 2,162,886 km (0.118 R)
• M5: 2,622,899 km (0.119 R)
• M6: 2,998,989 km (0.032 R)
• M7: 3,365,503 km (0.119 R)
• M8: 5,290,080 km (0.052 R)
• M9: 7,382,805 km (0.104 R)
• M10: 8,011,864 km (0.1 R)
• M11: 10,939,344 km (0.096 R)
• M12: 11,704,238 km (0.063 R)
• M13: 19,299,322 km (0.112 R)
• M14: 21,414,786 km (0.025 R)
• M15: 22,046,537 km (0.082 R)
• M16: 24,957,263 km (0.062 R)
• M17: 28,396,967 km (0.077 R)
• M18: 31,427,221 km (0.082 R)
• M19: 35,756,883 km (0.082 R)

Planet 8 - Ice Giant

Semi-Major Axis: 9.49 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 100.3

Radius: 7.1

Gravity: 1.99 G

Time & Orbit

Eccentricity (e): 0.247

Orbit Range: 7.15 AU - 11.83 AU

Year: 19829 Days

Day: 21 Hours

Environment

Temp: -240 °C

Axial Tilt: 34.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 39,874,687 km

• M1: 88,412 km (0.11 R)
• M2: 1,262,157 km (0.116 R)
• M3: 1,597,556 km (0.097 R)
• M4: 2,673,015 km (0.077 R)
• M5: 3,251,659 km (0.092 R)
• M6: 4,011,617 km (0.092 R)
• M7: 4,515,911 km (0.097 R)
• M8: 4,972,633 km (0.039 R)
• M9: 7,456,407 km (0.106 R)
• M10: 11,683,444 km (0.047 R)
• M11: 12,054,596 km (0.092 R)
• M12: 12,324,471 km (0.109 R)
• M13: 17,761,157 km (0.104 R)
• M14: 19,928,830 km (0.028 R)
• M15: 21,232,426 km (0.108 R)
• M16: 22,837,611 km (0.115 R)
• M17: 30,367,620 km (0.069 R)
• M18: 30,968,554 km (0.057 R)
• M19: 32,923,799 km (0.1 R)
• M20: 39,874,714 km (0.111 R)

Kuiper Belt

Range: 30 - 48 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 238 - 13,962 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit