🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.3 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.59 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.38

Radius: 1.63

Gravity: 1.27 G

Time & Orbit

Eccentricity (e): 0.041

Orbit Range: 0.57 AU - 0.61 AU

Year: 293 Days

Day: 23.4 Hours

Environment

Temp: -121 °C

Axial Tilt: 0.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.72 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 899.7

Radius: 8.1

Gravity: 13.71 G

Time & Orbit

Eccentricity (e): 0.032

Orbit Range: 0.7 AU - 0.74 AU

Year: 394 Days

Day: 12.9 Hours

Environment

Temp: -136 °C

Axial Tilt: 35.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 85,054,326 km

• M1: 100,679 km (0.079 R)
• M2: 372,947 km (0.062 R)
• M3: 627,862 km (0.111 R)
• M4: 903,721 km (0.11 R)
• M5: 1,179,729 km (0.097 R)
• M6: 1,582,297 km (0.072 R)
• M7: 2,241,874 km (0.114 R)
• M8: 3,117,919 km (0.102 R)
• M9: 3,646,448 km (0.112 R)
• M10: 4,943,611 km (0.056 R)
• M11: 5,197,329 km (0.105 R)
• M12: 5,509,989 km (0.097 R)
• M13: 5,975,837 km (0.112 R)

Planet 3 - Gas Giant

Semi-Major Axis: 3.25 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 197

Radius: 8

Gravity: 3.08 G

Time & Orbit

Eccentricity (e): 0.026

Orbit Range: 3.17 AU - 3.33 AU

Year: 3783 Days

Day: 7.3 Hours

Environment

Temp: -200 °C

Axial Tilt: 33.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 85,054,326 km

• M1: 114,442 km (0.083 R)
• M2: 566,228 km (0.082 R)
• M3: 823,087 km (0.1 R)
• M4: 1,659,190 km (0.081 R)
• M5: 2,023,012 km (0.111 R)
• M6: 2,957,550 km (0.054 R)
• M7: 3,564,618 km (0.117 R)
• M8: 4,575,451 km (0.077 R)
• M9: 5,091,564 km (0.101 R)
• M10: 5,386,870 km (0.112 R)
• M11: 5,741,865 km (0.113 R)
• M12: 6,265,009 km (0.088 R)
• M13: 7,320,721 km (0.103 R)
• M14: 8,939,221 km (0.072 R)
• M15: 10,599,159 km (0.064 R)
• M16: 10,931,864 km (0.097 R)
• M17: 11,501,832 km (0.098 R)
• M18: 12,131,639 km (0.105 R)
• M19: 15,159,500 km (0.084 R)
• M20: 15,534,841 km (0.047 R)

Planet 4 - Gas Giant

Semi-Major Axis: 4.72 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 743.3

Radius: 9.5

Gravity: 8.24 G

Time & Orbit

Eccentricity (e): 0.143

Orbit Range: 4.05 AU - 5.39 AU

Year: 6621 Days

Day: 10.7 Hours

Environment

Temp: -206 °C

Axial Tilt: 31 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 85,054,326 km

• M1: 120,426 km (0.105 R)
• M2: 504,594 km (0.107 R)
• M3: 1,125,275 km (0.08 R)
• M4: 1,902,287 km (0.09 R)
• M5: 2,230,205 km (0.059 R)
• M6: 4,269,074 km (0.106 R)
• M7: 4,642,172 km (0.063 R)
• M8: 5,926,469 km (0.101 R)
• M9: 7,172,171 km (0.1 R)
• M10: 8,794,260 km (0.119 R)
• M11: 9,093,905 km (0.104 R)
• M12: 10,988,562 km (0.031 R)
• M13: 11,846,356 km (0.113 R)
• M14: 12,265,081 km (0.104 R)
• M15: 17,413,342 km (0.087 R)
• M16: 23,595,324 km (0.111 R)
• M17: 24,258,940 km (0.071 R)
• M18: 28,879,570 km (0.114 R)
• M19: 29,257,604 km (0.092 R)
• M20: 34,477,223 km (0.097 R)

Planet 5 - Gas Giant

Semi-Major Axis: 5.76 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 600.9

Radius: 13.6

Gravity: 3.25 G

Time & Orbit

Eccentricity (e): 0.125

Orbit Range: 5.04 AU - 6.48 AU

Year: 8926 Days

Day: 13.9 Hours

Environment

Temp: -222 °C

Axial Tilt: 23.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 85,054,326 km

• M1: 169,494 km (0.108 R)
• M2: 1,468,303 km (0.12 R)
• M3: 2,113,070 km (0.066 R)
• M4: 2,605,845 km (0.116 R)
• M5: 4,293,010 km (0.045 R)
• M6: 5,338,998 km (0.081 R)
• M7: 6,441,086 km (0.045 R)
• M8: 8,694,927 km (0.077 R)
• M9: 10,915,259 km (0.119 R)
• M10: 11,590,993 km (0.094 R)
• M11: 12,020,638 km (0.078 R)
• M12: 13,608,918 km (0.097 R)
• M13: 18,694,498 km (0.096 R)
• M14: 21,943,016 km (0.113 R)
• M15: 23,359,109 km (0.087 R)
• M16: 36,494,550 km (0.048 R)

Planet 6 - Ice Giant

Semi-Major Axis: 7.17 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 713

Radius: 4.1

Gravity: 42.42 G

Time & Orbit

Eccentricity (e): 0.111

Orbit Range: 6.37 AU - 7.97 AU

Year: 12396 Days

Day: 23.1 Hours

Environment

Temp: -232 °C

Axial Tilt: 43.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 85,054,326 km

• M1: 51,013 km (0.064 R)
• M2: 194,926 km (0.077 R)
• M3: 526,435 km (0.085 R)
• M4: 979,716 km (0.119 R)
• M5: 2,842,060 km (0.114 R)
• M6: 4,629,306 km (0.111 R)
• M7: 8,627,160 km (0.095 R)
• M8: 9,017,760 km (0.092 R)
• M9: 9,419,879 km (0.106 R)
• M10: 10,314,025 km (0.109 R)
• M11: 13,593,510 km (0.095 R)
• M12: 13,988,448 km (0.117 R)
• M13: 19,509,058 km (0.099 R)
• M14: 33,364,664 km (0.115 R)
• M15: 37,058,385 km (0.113 R)
• M16: 48,069,087 km (0.075 R)
• M17: 49,911,834 km (0.084 R)
• M18: 51,482,910 km (0.076 R)
• M19: 52,602,052 km (0.12 R)
• M20: 52,763,319 km (0.085 R)

Planet 7 - Ice Giant

Semi-Major Axis: 10.52 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 788.5

Radius: 7.2

Gravity: 15.21 G

Time & Orbit

Eccentricity (e): 0.112

Orbit Range: 9.34 AU - 11.7 AU

Year: 22031 Days

Day: 18.9 Hours

Environment

Temp: -228 °C

Axial Tilt: 4.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (32)

Outer Limit: 85,054,326 km

• M1: 89,609 km (0.091 R)
• M2: 370,554 km (0.107 R)
• M3: 1,178,233 km (0.114 R)
• M4: 1,417,141 km (0.064 R)
• M5: 1,688,661 km (0.098 R)
• M6: 2,620,655 km (0.115 R)
• M7: 3,006,169 km (0.111 R)
• M8: 3,458,553 km (0.086 R)
• M9: 4,642,172 km (0.116 R)
• M10: 5,325,983 km (0.089 R)
• M11: 5,945,468 km (0.092 R)
• M12: 9,195,332 km (0.1 R)
• M13: 10,710,160 km (0.029 R)
• M14: 11,899,015 km (0.108 R)
• M15: 15,577,327 km (0.084 R)
• M16: 18,259,019 km (0.075 R)
• M17: 20,634,334 km (0.093 R)
• M18: 20,932,632 km (0.079 R)
• M19: 23,856,372 km (0.116 R)
• M20: 26,336,556 km (0.077 R)
• M21: 28,983,391 km (0.103 R)
• M22: 31,802,413 km (0.074 R)
• M23: 37,830,459 km (0.087 R)
• M24: 39,639,247 km (0.05 R)
• M25: 42,299,396 km (0.063 R)
• M26: 49,023,372 km (0.094 R)
• M27: 50,628,557 km (0.078 R)
• M28: 65,177,698 km (0.096 R)
• M29: 66,899,869 km (0.037 R)
• M30: 70,659,861 km (0.104 R)
• M31: 77,395,057 km (0.094 R)
• M32: 80,548,281 km (0.11 R)

Kuiper Belt

Range: 30 - 47 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 247 - 17,600 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit