🌌 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: 0.64 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.34

Radius: 1.8

Gravity: 1.34 G

Time & Orbit

Eccentricity (e): 0.066

Orbit Range: 0.6 AU - 0.68 AU

Year: 331 Days

Day: 35.8 Hours

Environment

Temp: -131 °C

Axial Tilt: 1.9 °

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: 957

Radius: 13.2

Gravity: 5.49 G

Time & Orbit

Eccentricity (e): 0.13

Orbit Range: 0.63 AU - 0.81 AU

Year: 394 Days

Day: 7.3 Hours

Environment

Temp: -142 °C

Axial Tilt: 21.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 33,083,748 km

• M1: 164,857 km (0.109 R)
• M2: 625,020 km (0.082 R)
• M3: 1,084,734 km (0.09 R)
• M4: 1,640,041 km (0.113 R)
• M5: 2,255,487 km (0.118 R)
• M6: 3,044,017 km (0.034 R)
• M7: 3,837,485 km (0.077 R)
• M8: 4,255,760 km (0.053 R)
• M9: 5,994,387 km (0.101 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.76 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 176.4

Radius: 10.2

Gravity: 1.7 G

Time & Orbit

Eccentricity (e): 0.005

Orbit Range: 1.75 AU - 1.77 AU

Year: 1508 Days

Day: 8.6 Hours

Environment

Temp: -177 °C

Axial Tilt: 12.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 33,083,748 km

• M1: 127,009 km (0.074 R)
• M2: 704,905 km (0.053 R)
• M3: 1,711,400 km (0.062 R)
• M4: 2,507,709 km (0.077 R)
• M5: 3,238,046 km (0.071 R)
• M6: 3,589,900 km (0.089 R)
• M7: 5,484,108 km (0.099 R)
• M8: 6,147,425 km (0.118 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.8 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 109.9

Radius: 13.1

Gravity: 0.64 G

Time & Orbit

Eccentricity (e): 0.159

Orbit Range: 1.51 AU - 2.09 AU

Year: 1559 Days

Day: 13.1 Hours

Environment

Temp: -185 °C

Axial Tilt: 39.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 33,083,748 km

• M1: 168,597 km (0.102 R)
• M2: 584,180 km (0.116 R)
• M3: 1,119,291 km (0.112 R)
• M4: 1,991,297 km (0.102 R)
• M5: 3,252,557 km (0.119 R)
• M6: 4,188,890 km (0.112 R)
• M7: 5,580,749 km (0.083 R)
• M8: 7,047,705 km (0.068 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.98 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 416.6

Radius: 8.3

Gravity: 6.05 G

Time & Orbit

Eccentricity (e): 0.142

Orbit Range: 1.7 AU - 2.26 AU

Year: 1799 Days

Day: 11.8 Hours

Environment

Temp: -192 °C

Axial Tilt: 29.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 33,083,748 km

• M1: 103,372 km (0.11 R)
• M2: 482,004 km (0.086 R)
• M3: 968,796 km (0.083 R)
• M4: 1,613,563 km (0.106 R)
• M5: 1,877,304 km (0.064 R)
• M6: 2,807,503 km (0.108 R)
• M7: 3,074,984 km (0.09 R)
• M8: 3,580,326 km (0.105 R)
• M9: 4,247,832 km (0.098 R)
• M10: 5,097,547 km (0.084 R)
• M11: 5,716,733 km (0.113 R)
• M12: 6,361,201 km (0.11 R)
• M13: 7,497,247 km (0.089 R)
• M14: 7,876,777 km (0.028 R)
• M15: 9,777,717 km (0.078 R)
• M16: 10,132,862 km (0.095 R)
• M17: 11,145,191 km (0.092 R)
• M18: 12,075,839 km (0.094 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.2 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 723

Radius: 9.9

Gravity: 7.38 G

Time & Orbit

Eccentricity (e): 0.016

Orbit Range: 3.15 AU - 3.25 AU

Year: 3696 Days

Day: 13.3 Hours

Environment

Temp: -197 °C

Axial Tilt: 19.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 33,083,748 km

• M1: 123,119 km (0.099 R)
• M2: 609,911 km (0.098 R)
• M3: 927,357 km (0.108 R)
• M4: 1,319,453 km (0.104 R)
• M5: 2,153,611 km (0.107 R)
• M6: 2,976,549 km (0.066 R)
• M7: 3,499,842 km (0.086 R)
• M8: 6,618,509 km (0.088 R)
• M9: 7,379,513 km (0.097 R)
• M10: 7,918,365 km (0.038 R)
• M11: 10,217,385 km (0.098 R)
• M12: 10,930,219 km (0.106 R)
• M13: 11,586,355 km (0.107 R)
• M14: 13,514,073 km (0.092 R)
• M15: 17,051,913 km (0.081 R)
• M16: 18,174,945 km (0.105 R)
• M17: 20,111,938 km (0.097 R)
• M18: 22,251,935 km (0.048 R)
• M19: 23,092,077 km (0.118 R)
• M20: 24,465,535 km (0.093 R)
• M21: 24,835,939 km (0.114 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.18 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 388.7

Radius: 13

Gravity: 2.3 G

Time & Orbit

Eccentricity (e): 0.095

Orbit Range: 4.69 AU - 5.67 AU

Year: 7612 Days

Day: 6.5 Hours

Environment

Temp: -221 °C

Axial Tilt: 12.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 33,083,748 km

• M1: 166,353 km (0.041 R)
• M2: 694,882 km (0.081 R)
• M3: 1,953,898 km (0.113 R)
• M4: 2,364,993 km (0.111 R)
• M5: 3,004,524 km (0.12 R)
• M6: 3,894,332 km (0.119 R)
• M7: 4,737,615 km (0.076 R)
• M8: 6,194,698 km (0.109 R)
• M9: 9,328,624 km (0.072 R)
• M10: 9,931,055 km (0.115 R)
• M11: 12,398,672 km (0.113 R)
• M12: 12,811,711 km (0.098 R)
• M13: 13,233,876 km (0.118 R)
• M14: 13,829,575 km (0.092 R)
• M15: 14,556,770 km (0.067 R)
• M16: 15,250,306 km (0.106 R)
• M17: 16,641,417 km (0.045 R)
• M18: 17,722,710 km (0.049 R)
• M19: 18,918,147 km (0.107 R)
• M20: 19,328,344 km (0.1 R)
• M21: 21,469,389 km (0.064 R)
• M22: 26,302,597 km (0.116 R)
• M23: 26,728,352 km (0.052 R)
• M24: 29,380,124 km (0.07 R)

Kuiper Belt

Range: 30 - 54 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 339 - 18,693 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit