🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.66 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 1.31 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.9

Radius: 1.72

Gravity: 1.32 G

Time & Orbit

Eccentricity (e): 0.083

Orbit Range: 1.2 AU - 1.42 AU

Year: 565 Days

Day: 25.1 Hours

Environment

Temp: -32 °C

Axial Tilt: 17.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 1.49 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.66

Radius: 1.22

Gravity: 1.12 G

Time & Orbit

Eccentricity (e): 0.242

Orbit Range: 1.13 AU - 1.85 AU

Year: 685 Days

Day: 41.8 Hours

Environment

Temp: -48 °C

Axial Tilt: 29.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 111,074,524 km

• M1: 28,424 km (0.11 R)
• M2: 492,775 km (0.078 R)

Planet 3 - Gas Giant

Semi-Major Axis: 4.88 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 100.2

Radius: 13.8

Gravity: 0.53 G

Time & Orbit

Eccentricity (e): 0.123

Orbit Range: 4.28 AU - 5.48 AU

Year: 4061 Days

Day: 7.5 Hours

Environment

Temp: -149 °C

Axial Tilt: 27.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 111,074,524 km

• M1: 171,888 km (0.107 R)
• M2: 728,392 km (0.081 R)
• M3: 1,192,295 km (0.12 R)
• M4: 3,215,756 km (0.108 R)
• M5: 4,194,276 km (0.047 R)
• M6: 6,035,227 km (0.12 R)
• M7: 6,613,123 km (0.114 R)
• M8: 8,751,326 km (0.114 R)
• M9: 11,825,562 km (0.106 R)
• M10: 12,273,757 km (0.098 R)
• M11: 12,928,098 km (0.032 R)
• M12: 13,850,369 km (0.111 R)

Planet 4 - Gas Giant

Semi-Major Axis: 6.4 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 765.6

Radius: 9.7

Gravity: 8.14 G

Time & Orbit

Eccentricity (e): 0.021

Orbit Range: 6.27 AU - 6.53 AU

Year: 6100 Days

Day: 13.3 Hours

Environment

Temp: -157 °C

Axial Tilt: 11 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (32)

Outer Limit: 111,074,524 km

• M1: 124,615 km (0.062 R)
• M2: 657,931 km (0.035 R)
• M3: 1,122,433 km (0.093 R)
• M4: 1,559,558 km (0.071 R)
• M5: 1,868,777 km (0.106 R)
• M6: 2,318,169 km (0.106 R)
• M7: 2,819,321 km (0.079 R)
• M8: 3,262,730 km (0.065 R)
• M9: 4,113,343 km (0.109 R)
• M10: 4,685,405 km (0.082 R)
• M11: 5,076,604 km (0.095 R)
• M12: 5,580,599 km (0.045 R)
• M13: 7,149,731 km (0.027 R)
• M14: 8,618,483 km (0.106 R)
• M15: 9,036,310 km (0.064 R)
• M16: 9,511,582 km (0.028 R)
• M17: 10,796,778 km (0.113 R)
• M18: 12,774,761 km (0.074 R)
• M19: 14,048,586 km (0.08 R)
• M20: 16,589,805 km (0.109 R)
• M21: 17,700,570 km (0.113 R)
• M22: 18,720,977 km (0.05 R)
• M23: 19,996,897 km (0.109 R)
• M24: 22,563,398 km (0.069 R)
• M25: 23,844,105 km (0.117 R)
• M26: 25,088,012 km (0.109 R)
• M27: 26,200,721 km (0.112 R)
• M28: 27,167,572 km (0.066 R)
• M29: 28,249,314 km (0.039 R)
• M30: 29,172,632 km (0.115 R)
• M31: 33,885,862 km (0.089 R)
• M32: 34,404,219 km (0.093 R)

Planet 5 - Gas Giant

Semi-Major Axis: 10.34 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 564.5

Radius: 11.1

Gravity: 4.58 G

Time & Orbit

Eccentricity (e): 0.119

Orbit Range: 9.11 AU - 11.57 AU

Year: 12526 Days

Day: 11.2 Hours

Environment

Temp: -191 °C

Axial Tilt: 7.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 111,074,524 km

• M1: 138,827 km (0.089 R)
• M2: 771,775 km (0.109 R)
• M3: 1,544,299 km (0.106 R)
• M4: 2,009,698 km (0.08 R)
• M5: 2,507,709 km (0.107 R)
• M6: 3,780,338 km (0.075 R)
• M7: 4,979,515 km (0.074 R)
• M8: 6,116,459 km (0.08 R)
• M9: 7,461,044 km (0.087 R)
• M10: 9,732,389 km (0.063 R)
• M11: 13,599,643 km (0.109 R)
• M12: 16,804,628 km (0.107 R)
• M13: 17,773,125 km (0.03 R)
• M14: 27,611,578 km (0.104 R)
• M15: 30,786,793 km (0.11 R)
• M16: 31,449,811 km (0.099 R)
• M17: 35,028,341 km (0.079 R)
• M18: 45,928,641 km (0.073 R)
• M19: 51,751,738 km (0.049 R)

Planet 6 - Gas Giant

Semi-Major Axis: 11.17 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 574.2

Radius: 14.5

Gravity: 2.73 G

Time & Orbit

Eccentricity (e): 0.066

Orbit Range: 10.43 AU - 11.91 AU

Year: 14064 Days

Day: 10.8 Hours

Environment

Temp: -189 °C

Axial Tilt: 32.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 111,074,524 km

• M1: 184,454 km (0.057 R)
• M2: 942,766 km (0.039 R)
• M3: 1,559,558 km (0.073 R)
• M4: 3,283,374 km (0.076 R)
• M5: 4,521,596 km (0.086 R)
• M6: 5,333,613 km (0.105 R)
• M7: 6,317,967 km (0.094 R)
• M8: 8,599,634 km (0.058 R)
• M9: 9,234,377 km (0.098 R)
• M10: 15,639,261 km (0.102 R)
• M11: 16,961,556 km (0.091 R)
• M12: 22,543,502 km (0.062 R)
• M13: 23,003,665 km (0.084 R)
• M14: 23,470,111 km (0.042 R)
• M15: 27,641,199 km (0.053 R)
• M16: 28,168,531 km (0.099 R)
• M17: 33,579,187 km (0.027 R)
• M18: 41,958,612 km (0.106 R)
• M19: 49,590,797 km (0.108 R)

Planet 7 - Ice Giant

Semi-Major Axis: 12.78 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 484.3

Radius: 6.8

Gravity: 10.47 G

Time & Orbit

Eccentricity (e): 0.097

Orbit Range: 11.54 AU - 14.02 AU

Year: 17212 Days

Day: 20.1 Hours

Environment

Temp: -185 °C

Axial Tilt: 18.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (35)

Outer Limit: 111,074,524 km

• M1: 84,523 km (0.089 R)
• M2: 359,633 km (0.102 R)
• M3: 974,181 km (0.099 R)
• M4: 1,303,446 km (0.101 R)
• M5: 1,721,722 km (0.078 R)
• M6: 2,325,648 km (0.116 R)
• M7: 2,643,394 km (0.071 R)
• M8: 3,262,730 km (0.089 R)
• M9: 3,661,857 km (0.103 R)
• M10: 4,274,759 km (0.043 R)
• M11: 6,006,953 km (0.042 R)
• M12: 7,028,258 km (0.111 R)
• M13: 7,648,490 km (0.12 R)
• M14: 8,304,477 km (0.108 R)
• M15: 11,606,401 km (0.056 R)
• M16: 12,033,802 km (0.089 R)
• M17: 13,512,428 km (0.059 R)
• M18: 14,330,279 km (0.036 R)
• M19: 16,365,857 km (0.115 R)
• M20: 19,683,190 km (0.037 R)
• M21: 21,635,742 km (0.119 R)
• M22: 22,470,498 km (0.09 R)
• M23: 24,801,233 km (0.099 R)
• M24: 28,813,597 km (0.034 R)
• M25: 30,973,042 km (0.109 R)
• M26: 32,271,402 km (0.1 R)
• M27: 33,605,516 km (0.087 R)
• M28: 34,976,132 km (0.119 R)
• M29: 39,721,975 km (0.086 R)
• M30: 40,135,912 km (0.066 R)
• M31: 42,391,698 km (0.117 R)
• M32: 51,604,234 km (0.086 R)
• M33: 52,592,927 km (0.107 R)
• M34: 53,594,036 km (0.1 R)
• M35: 55,290,924 km (0.056 R)

Planet 8 - Ice Giant

Semi-Major Axis: 18.98 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 878.4

Radius: 7.1

Gravity: 17.43 G

Time & Orbit

Eccentricity (e): 0.171

Orbit Range: 15.73 AU - 22.23 AU

Year: 31151 Days

Day: 16 Hours

Environment

Temp: -198 °C

Axial Tilt: 27.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 111,074,524 km

• M1: 96,491 km (0.036 R)
• M2: 355,295 km (0.068 R)
• M3: 1,206,806 km (0.119 R)
• M4: 1,510,340 km (0.063 R)
• M5: 2,684,683 km (0.026 R)
• M6: 3,145,295 km (0.096 R)
• M7: 4,223,597 km (0.107 R)
• M8: 6,178,392 km (0.09 R)
• M9: 7,906,696 km (0.113 R)
• M10: 13,961,520 km (0.117 R)
• M11: 29,046,521 km (0.096 R)
• M12: 30,008,585 km (0.071 R)
• M13: 33,768,727 km (0.047 R)
• M14: 42,909,905 km (0.12 R)
• M15: 62,182,449 km (0.105 R)
• M16: 77,541,663 km (0.114 R)
• M17: 79,923,261 km (0.096 R)
• M18: 84,554,212 km (0.109 R)
• M19: 87,076,732 km (0.09 R)
• M20: 88,213,825 km (0.082 R)
• M21: 102,010,339 km (0.102 R)
• M22: 104,228,128 km (0.089 R)
• M23: 109,417,977 km (0.114 R)

Kuiper Belt

Range: 30 - 45 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 392 - 11,861 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit