🌌 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: 0.63 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.55

Radius: 1.83

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.074

Orbit Range: 0.58 AU - 0.68 AU

Year: 323 Days

Day: 46.8 Hours

Environment

Temp: -136 °C

Axial Tilt: 22 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.94 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 399

Radius: 8.7

Gravity: 5.27 G

Time & Orbit

Eccentricity (e): 0.07

Orbit Range: 0.87 AU - 1.01 AU

Year: 588 Days

Day: 9 Hours

Environment

Temp: -149 °C

Axial Tilt: 10 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 35,300,247 km

• M1: 108,309 km (0.073 R)
• M2: 450,290 km (0.103 R)
• M3: 729,738 km (0.084 R)
• M4: 1,097,749 km (0.093 R)
• M5: 1,405,921 km (0.091 R)
• M6: 1,756,728 km (0.06 R)
• M7: 2,165,878 km (0.051 R)
• M8: 2,538,077 km (0.085 R)
• M9: 2,813,038 km (0.105 R)
• M10: 4,065,621 km (0.032 R)
• M11: 4,401,020 km (0.046 R)
• M12: 5,420,080 km (0.072 R)
• M13: 5,896,998 km (0.046 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.39 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 698.3

Radius: 13.8

Gravity: 3.67 G

Time & Orbit

Eccentricity (e): 0.128

Orbit Range: 1.21 AU - 1.57 AU

Year: 1058 Days

Day: 6.2 Hours

Environment

Temp: -165 °C

Axial Tilt: 47.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 35,300,247 km

• M1: 171,589 km (0.086 R)
• M2: 736,171 km (0.108 R)
• M3: 1,198,728 km (0.081 R)
• M4: 1,647,821 km (0.118 R)
• M5: 2,107,535 km (0.087 R)
• M6: 2,852,682 km (0.1 R)
• M7: 3,783,330 km (0.109 R)
• M8: 5,487,848 km (0.061 R)
• M9: 5,984,663 km (0.108 R)
• M10: 6,786,507 km (0.112 R)

Planet 4 - Gas Giant

Semi-Major Axis: 3.29 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 177.1

Radius: 13.8

Gravity: 0.93 G

Time & Orbit

Eccentricity (e): 0.199

Orbit Range: 2.64 AU - 3.94 AU

Year: 3853 Days

Day: 14.4 Hours

Environment

Temp: -211 °C

Axial Tilt: 36.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 35,300,247 km

• M1: 171,589 km (0.074 R)
• M2: 690,993 km (0.063 R)
• M3: 1,242,261 km (0.106 R)
• M4: 1,907,822 km (0.074 R)
• M5: 2,446,972 km (0.105 R)
• M6: 2,950,968 km (0.074 R)
• M7: 3,558,335 km (0.081 R)
• M8: 4,021,191 km (0.096 R)
• M9: 4,646,510 km (0.119 R)
• M10: 6,523,664 km (0.054 R)
• M11: 7,194,012 km (0.092 R)
• M12: 9,154,343 km (0.098 R)
• M13: 9,789,385 km (0.106 R)
• M14: 10,240,722 km (0.097 R)
• M15: 11,950,626 km (0.109 R)
• M16: 13,122,426 km (0.096 R)
• M17: 13,757,768 km (0.078 R)
• M18: 14,236,781 km (0.055 R)
• M19: 14,953,354 km (0.034 R)
• M20: 15,977,801 km (0.108 R)

Planet 5 - Gas Giant

Semi-Major Axis: 4.42 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 423.2

Radius: 11

Gravity: 3.5 G

Time & Orbit

Eccentricity (e): 0.023

Orbit Range: 4.32 AU - 4.52 AU

Year: 6000 Days

Day: 9.5 Hours

Environment

Temp: -210 °C

Axial Tilt: 21.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 35,300,247 km

• M1: 201,808 km (0.065 R)
• M2: 556,654 km (0.03 R)
• M3: 2,418,848 km (0.042 R)
• M4: 3,434,318 km (0.116 R)
• M5: 3,859,326 km (0.09 R)
• M6: 4,271,767 km (0.054 R)
• M7: 5,350,069 km (0.116 R)
• M8: 6,103,444 km (0.089 R)
• M9: 6,537,577 km (0.108 R)
• M10: 7,537,788 km (0.107 R)
• M11: 8,830,164 km (0.118 R)
• M12: 9,756,624 km (0.048 R)
• M13: 11,520,382 km (0.103 R)
• M14: 14,550,936 km (0.092 R)
• M15: 15,441,043 km (0.111 R)
• M16: 21,419,722 km (0.077 R)
• M17: 24,452,221 km (0.09 R)
• M18: 25,550,269 km (0.066 R)
• M19: 26,030,777 km (0.051 R)
• M20: 28,868,350 km (0.097 R)

Planet 6 - Gas Giant

Semi-Major Axis: 5.25 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 641.2

Radius: 9.6

Gravity: 6.96 G

Time & Orbit

Eccentricity (e): 0.138

Orbit Range: 4.53 AU - 5.97 AU

Year: 7767 Days

Day: 7.7 Hours

Environment

Temp: -217 °C

Axial Tilt: 5.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 35,300,247 km

• M1: 119,529 km (0.075 R)
• M2: 474,824 km (0.099 R)
• M3: 2,055,924 km (0.068 R)
• M4: 2,553,785 km (0.063 R)
• M5: 3,151,578 km (0.107 R)
• M6: 6,033,282 km (0.106 R)
• M7: 9,307,381 km (0.053 R)
• M8: 10,043,253 km (0.086 R)
• M9: 10,767,905 km (0.051 R)
• M10: 11,527,114 km (0.1 R)
• M11: 11,946,288 km (0.073 R)
• M12: 13,842,740 km (0.075 R)
• M13: 21,266,983 km (0.113 R)
• M14: 21,739,263 km (0.082 R)
• M15: 25,419,072 km (0.098 R)
• M16: 26,399,985 km (0.107 R)
• M17: 27,684,732 km (0.056 R)
• M18: 32,613,981 km (0.029 R)
• M19: 33,985,345 km (0.1 R)
• M20: 34,307,280 km (0.067 R)
• M21: 35,836,170 km (0.064 R)
• M22: 38,098,539 km (0.108 R)

Planet 7 - Ice Giant

Semi-Major Axis: 7.06 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 186.5

Radius: 7.8

Gravity: 3.07 G

Time & Orbit

Eccentricity (e): 0.02

Orbit Range: 6.92 AU - 7.2 AU

Year: 12112 Days

Day: 20.7 Hours

Environment

Temp: -223 °C

Axial Tilt: 158.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 35,300,247 km

• M1: 97,239 km (0.102 R)
• M2: 382,821 km (0.063 R)
• M3: 640,428 km (0.099 R)
• M4: 1,125,574 km (0.066 R)
• M5: 1,432,400 km (0.114 R)
• M6: 1,725,761 km (0.12 R)
• M7: 2,333,128 km (0.092 R)
• M8: 2,895,916 km (0.039 R)
• M9: 3,157,562 km (0.06 R)
• M10: 3,965,989 km (0.096 R)
• M11: 5,337,951 km (0.095 R)
• M12: 7,777,145 km (0.102 R)
• M13: 9,412,100 km (0.111 R)
• M14: 11,561,372 km (0.098 R)
• M15: 11,813,145 km (0.096 R)
• M16: 14,018,068 km (0.086 R)
• M17: 14,829,936 km (0.031 R)
• M18: 15,734,106 km (0.062 R)
• M19: 16,802,833 km (0.107 R)
• M20: 17,061,039 km (0.049 R)
• M21: 22,177,286 km (0.114 R)
• M22: 24,251,012 km (0.109 R)
• M23: 24,997,954 km (0.104 R)
• M24: 25,931,594 km (0.028 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: 286 - 13,255 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit