🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.28 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.55 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.8

Radius: 1.87

Gravity: 1.37 G

Time & Orbit

Eccentricity (e): 0.006

Orbit Range: 0.55 AU - 0.55 AU

Year: 263 Days

Day: 12.8 Hours

Environment

Temp: -119 °C

Axial Tilt: 29.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.78 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 240.4

Radius: 9.5

Gravity: 2.66 G

Time & Orbit

Eccentricity (e): 0.185

Orbit Range: 0.64 AU - 0.92 AU

Year: 445 Days

Day: 7.4 Hours

Environment

Temp: -144 °C

Axial Tilt: 16.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 49,586,877 km

• M1: 135,685 km (0.059 R)
• M2: 519,853 km (0.088 R)
• M3: 854,503 km (0.116 R)
• M4: 1,359,246 km (0.094 R)
• M5: 2,207,167 km (0.082 R)
• M6: 2,706,225 km (0.112 R)
• M7: 3,872,490 km (0.116 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.8 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 700.9

Radius: 11.4

Gravity: 5.39 G

Time & Orbit

Eccentricity (e): 0.25

Orbit Range: 1.35 AU - 2.25 AU

Year: 1559 Days

Day: 11.3 Hours

Environment

Temp: -183 °C

Axial Tilt: 9.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 49,586,877 km

• M1: 151,543 km (0.103 R)
• M2: 671,844 km (0.055 R)
• M3: 1,626,278 km (0.025 R)
• M4: 2,383,992 km (0.044 R)
• M5: 2,761,277 km (0.106 R)
• M6: 3,621,764 km (0.093 R)
• M7: 4,731,631 km (0.103 R)
• M8: 5,376,547 km (0.102 R)
• M9: 7,127,591 km (0.07 R)
• M10: 8,205,593 km (0.099 R)
• M11: 8,588,115 km (0.114 R)
• M12: 9,262,651 km (0.093 R)
• M13: 10,374,463 km (0.079 R)
• M14: 11,104,201 km (0.12 R)
• M15: 11,756,747 km (0.108 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.55 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 163.8

Radius: 10.7

Gravity: 1.43 G

Time & Orbit

Eccentricity (e): 0.094

Orbit Range: 2.31 AU - 2.79 AU

Year: 2629 Days

Day: 14.3 Hours

Environment

Temp: -193 °C

Axial Tilt: 22.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 49,586,877 km

• M1: 133,142 km (0.06 R)
• M2: 475,721 km (0.051 R)
• M3: 1,040,752 km (0.077 R)
• M4: 1,419,235 km (0.114 R)
• M5: 2,131,470 km (0.11 R)
• M6: 3,765,378 km (0.111 R)
• M7: 4,382,918 km (0.091 R)
• M8: 6,178,542 km (0.102 R)
• M9: 7,214,806 km (0.1 R)
• M10: 7,976,708 km (0.108 R)
• M11: 8,391,393 km (0.077 R)
• M12: 8,791,418 km (0.108 R)
• M13: 11,887,047 km (0.092 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.52 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 504.2

Radius: 12.7

Gravity: 3.13 G

Time & Orbit

Eccentricity (e): 0.085

Orbit Range: 3.22 AU - 3.82 AU

Year: 4264 Days

Day: 5.9 Hours

Environment

Temp: -199 °C

Axial Tilt: 9.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 49,586,877 km

• M1: 157,975 km (0.084 R)
• M2: 1,238,670 km (0.091 R)
• M3: 1,924,277 km (0.119 R)
• M4: 2,654,913 km (0.048 R)
• M5: 3,130,485 km (0.112 R)
• M6: 3,662,904 km (0.059 R)
• M7: 4,344,921 km (0.048 R)
• M8: 4,740,906 km (0.095 R)
• M9: 5,446,110 km (0.106 R)
• M10: 5,935,595 km (0.045 R)
• M11: 9,024,940 km (0.069 R)
• M12: 10,069,433 km (0.118 R)
• M13: 11,021,324 km (0.105 R)
• M14: 11,896,920 km (0.115 R)
• M15: 14,648,025 km (0.11 R)
• M16: 15,118,211 km (0.088 R)
• M17: 15,598,570 km (0.069 R)
• M18: 16,929,243 km (0.115 R)
• M19: 19,127,135 km (0.084 R)
• M20: 20,912,286 km (0.067 R)
• M21: 22,185,364 km (0.089 R)
• M22: 23,866,545 km (0.096 R)
• M23: 24,372,485 km (0.112 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.6 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 675.8

Radius: 14.3

Gravity: 3.3 G

Time & Orbit

Eccentricity (e): 0.243

Orbit Range: 2.73 AU - 4.47 AU

Year: 4410 Days

Day: 12.2 Hours

Environment

Temp: -201 °C

Axial Tilt: 92.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 49,586,877 km

• M1: 178,470 km (0.08 R)
• M2: 644,168 km (0.079 R)
• M3: 1,558,062 km (0.089 R)
• M4: 2,834,281 km (0.098 R)
• M5: 3,429,382 km (0.058 R)
• M6: 4,018,049 km (0.119 R)
• M7: 5,001,954 km (0.039 R)
• M8: 6,916,508 km (0.085 R)
• M9: 9,007,138 km (0.096 R)
• M10: 10,776,432 km (0.099 R)
• M11: 11,309,150 km (0.12 R)
• M12: 12,767,580 km (0.043 R)
• M13: 13,670,104 km (0.11 R)
• M14: 17,286,932 km (0.118 R)
• M15: 17,772,227 km (0.056 R)
• M16: 20,404,102 km (0.077 R)
• M17: 23,212,802 km (0.093 R)
• M18: 26,031,974 km (0.109 R)
• M19: 27,400,944 km (0.032 R)

Asteroid Belt

Center: 4.05 AU

Composition

Type: Outer System (Icy)

A dense region of planetesimals and debris.

Boundary

Planet 7 - Gas Giant

Semi-Major Axis: 4.49 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 256.7

Radius: 13.1

Gravity: 1.5 G

Time & Orbit

Eccentricity (e): 0.197

Orbit Range: 3.61 AU - 5.37 AU

Year: 6143 Days

Day: 14.4 Hours

Environment

Temp: -211 °C

Axial Tilt: 10.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 49,586,877 km

• M1: 162,912 km (0.106 R)
• M2: 640,428 km (0.08 R)
• M3: 1,112,410 km (0.099 R)
• M4: 2,001,021 km (0.056 R)
• M5: 2,469,262 km (0.099 R)
• M6: 3,081,716 km (0.107 R)
• M7: 4,201,307 km (0.058 R)
• M8: 5,388,964 km (0.084 R)
• M9: 5,962,074 km (0.091 R)
• M10: 6,485,516 km (0.089 R)
• M11: 7,039,477 km (0.086 R)
• M12: 7,591,494 km (0.099 R)
• M13: 8,067,664 km (0.116 R)
• M14: 8,819,393 km (0.103 R)
• M15: 9,893,954 km (0.098 R)
• M16: 10,840,311 km (0.052 R)
• M17: 12,913,288 km (0.063 R)
• M18: 13,445,857 km (0.073 R)
• M19: 16,500,346 km (0.11 R)
• M20: 17,360,085 km (0.085 R)
• M21: 19,926,436 km (0.094 R)
• M22: 21,033,909 km (0.085 R)
• M23: 22,876,357 km (0.069 R)

Planet 8 - Gas Giant

Semi-Major Axis: 5.09 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 571.4

Radius: 9.5

Gravity: 6.33 G

Time & Orbit

Eccentricity (e): 0.042

Orbit Range: 4.88 AU - 5.3 AU

Year: 7415 Days

Day: 10.5 Hours

Environment

Temp: -214 °C

Axial Tilt: 22.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (30)

Outer Limit: 49,586,877 km

• M1: 118,332 km (0.041 R)
• M2: 526,734 km (0.06 R)
• M3: 1,540,858 km (0.095 R)
• M4: 2,108,133 km (0.087 R)
• M5: 2,423,635 km (0.077 R)
• M6: 3,193,017 km (0.065 R)
• M7: 4,142,215 km (0.057 R)
• M8: 4,533,115 km (0.048 R)
• M9: 5,760,416 km (0.119 R)
• M10: 6,485,367 km (0.105 R)
• M11: 7,307,258 km (0.12 R)
• M12: 7,724,037 km (0.115 R)
• M13: 8,605,468 km (0.095 R)
• M14: 9,243,802 km (0.085 R)
• M15: 9,597,003 km (0.08 R)
• M16: 10,711,208 km (0.119 R)
• M17: 12,117,428 km (0.086 R)
• M18: 12,919,422 km (0.106 R)
• M19: 14,868,084 km (0.073 R)
• M20: 15,476,648 km (0.111 R)
• M21: 21,110,055 km (0.104 R)
• M22: 21,801,197 km (0.092 R)
• M23: 23,066,944 km (0.092 R)
• M24: 25,571,512 km (0.095 R)
• M25: 26,978,779 km (0.105 R)
• M26: 27,883,996 km (0.103 R)
• M27: 30,624,031 km (0.102 R)
• M28: 32,009,008 km (0.082 R)
• M29: 32,412,323 km (0.071 R)
• M30: 35,869,530 km (0.115 R)

Planet 9 - Ice Giant

Semi-Major Axis: 6.39 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 697.2

Radius: 7.6

Gravity: 12.07 G

Time & Orbit

Eccentricity (e): 0.232

Orbit Range: 4.91 AU - 7.87 AU

Year: 10430 Days

Day: 24.3 Hours

Environment

Temp: -219 °C

Axial Tilt: 47 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 49,586,877 km

• M1: 94,695 km (0.116 R)
• M2: 359,783 km (0.088 R)
• M3: 1,157,888 km (0.091 R)
• M4: 1,404,275 km (0.1 R)
• M5: 2,308,744 km (0.101 R)
• M6: 2,875,121 km (0.117 R)
• M7: 7,215,404 km (0.118 R)
• M8: 8,601,279 km (0.094 R)
• M9: 9,751,088 km (0.079 R)
• M10: 11,054,385 km (0.114 R)
• M11: 12,177,566 km (0.116 R)
• M12: 13,313,463 km (0.107 R)
• M13: 23,221,778 km (0.069 R)
• M14: 27,084,545 km (0.102 R)
• M15: 31,574,426 km (0.049 R)
• M16: 33,937,324 km (0.075 R)
• M17: 37,884,464 km (0.115 R)
• M18: 39,138,543 km (0.083 R)
• M19: 40,161,493 km (0.107 R)
• M20: 40,809,701 km (0.069 R)
• M21: 46,108,308 km (0.096 R)
• M22: 46,676,331 km (0.081 R)

Kuiper Belt

Range: 30 - 49 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 313 - 13,749 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit