🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.27 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.54 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.04

Radius: 1.56

Gravity: 1.25 G

Time & Orbit

Eccentricity (e): 0.226

Orbit Range: 0.42 AU - 0.66 AU

Year: 252 Days

Day: 47.2 Hours

Environment

Temp: -114 °C

Axial Tilt: 46.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.71 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 494.8

Radius: 14.8

Gravity: 2.26 G

Time & Orbit

Eccentricity (e): 0.088

Orbit Range: 0.65 AU - 0.77 AU

Year: 380 Days

Day: 8.2 Hours

Environment

Temp: -138 °C

Axial Tilt: 133.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 54,400,571 km

• M1: 184,005 km (0.09 R)
• M2: 772,673 km (0.108 R)
• M3: 1,623,436 km (0.109 R)
• M4: 2,174,405 km (0.101 R)
• M5: 2,662,094 km (0.107 R)
• M6: 3,223,685 km (0.116 R)
• M7: 3,793,054 km (0.075 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.77 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 686.8

Radius: 9.3

Gravity: 7.94 G

Time & Orbit

Eccentricity (e): 0.104

Orbit Range: 0.69 AU - 0.85 AU

Year: 430 Days

Day: 7.4 Hours

Environment

Temp: -152 °C

Axial Tilt: 173.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 54,400,571 km

• M1: 115,639 km (0.115 R)
• M2: 455,226 km (0.078 R)
• M3: 974,481 km (0.059 R)
• M4: 1,270,684 km (0.103 R)
• M5: 1,707,360 km (0.096 R)
• M6: 2,010,895 km (0.108 R)
• M7: 2,387,732 km (0.098 R)
• M8: 2,678,251 km (0.025 R)
• M9: 3,584,066 km (0.099 R)
• M10: 4,223,896 km (0.096 R)
• M11: 5,015,269 km (0.117 R)
• M12: 5,380,886 km (0.117 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.64 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 825.3

Radius: 14.8

Gravity: 3.77 G

Time & Orbit

Eccentricity (e): 0.036

Orbit Range: 1.58 AU - 1.7 AU

Year: 1335 Days

Day: 13.3 Hours

Environment

Temp: -177 °C

Axial Tilt: 10.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 54,400,571 km

• M1: 184,305 km (0.045 R)
• M2: 652,097 km (0.084 R)
• M3: 1,185,713 km (0.11 R)
• M4: 1,768,247 km (0.098 R)
• M5: 2,394,314 km (0.053 R)
• M6: 4,207,590 km (0.053 R)
• M7: 5,233,382 km (0.1 R)
• M8: 6,230,303 km (0.084 R)
• M9: 6,737,290 km (0.072 R)
• M10: 7,725,234 km (0.096 R)
• M11: 8,311,508 km (0.088 R)
• M12: 10,217,983 km (0.102 R)
• M13: 10,856,766 km (0.044 R)
• M14: 12,140,615 km (0.064 R)
• M15: 12,666,302 km (0.109 R)
• M16: 13,325,131 km (0.051 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.91 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 735.2

Radius: 13.4

Gravity: 4.09 G

Time & Orbit

Eccentricity (e): 0.064

Orbit Range: 1.79 AU - 2.03 AU

Year: 1678 Days

Day: 14.9 Hours

Environment

Temp: -195 °C

Axial Tilt: 14.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 54,400,571 km

• M1: 166,802 km (0.086 R)
• M2: 606,470 km (0.047 R)
• M3: 1,097,600 km (0.094 R)
• M4: 1,566,738 km (0.069 R)
• M5: 2,045,751 km (0.117 R)
• M6: 2,504,717 km (0.077 R)
• M7: 2,930,024 km (0.038 R)
• M8: 3,534,698 km (0.089 R)
• M9: 4,627,511 km (0.115 R)
• M10: 5,144,970 km (0.085 R)
• M11: 5,563,844 km (0.117 R)
• M12: 6,445,873 km (0.098 R)
• M13: 7,726,730 km (0.086 R)
• M14: 11,147,585 km (0.038 R)
• M15: 12,197,462 km (0.098 R)
• M16: 12,906,556 km (0.103 R)
• M17: 13,936,687 km (0.097 R)
• M18: 14,450,406 km (0.102 R)
• M19: 14,888,130 km (0.109 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.8 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 471.2

Radius: 10.4

Gravity: 4.36 G

Time & Orbit

Eccentricity (e): 0.048

Orbit Range: 2.67 AU - 2.93 AU

Year: 2979 Days

Day: 12.3 Hours

Environment

Temp: -206 °C

Axial Tilt: 39.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 54,400,571 km

• M1: 135,236 km (0.106 R)
• M2: 514,916 km (0.102 R)
• M3: 892,351 km (0.101 R)
• M4: 1,383,780 km (0.103 R)
• M5: 1,747,902 km (0.05 R)
• M6: 2,075,371 km (0.089 R)
• M7: 2,514,740 km (0.055 R)
• M8: 2,919,851 km (0.042 R)
• M9: 4,596,544 km (0.116 R)
• M10: 5,253,279 km (0.106 R)
• M11: 5,919,737 km (0.096 R)
• M12: 7,481,240 km (0.089 R)
• M13: 8,554,006 km (0.042 R)
• M14: 8,956,125 km (0.054 R)
• M15: 9,512,031 km (0.099 R)
• M16: 11,002,624 km (0.073 R)
• M17: 12,600,479 km (0.111 R)
• M18: 13,077,995 km (0.094 R)
• M19: 13,657,687 km (0.111 R)
• M20: 14,964,425 km (0.097 R)
• M21: 15,401,699 km (0.098 R)
• M22: 16,816,745 km (0.088 R)
• M23: 17,556,058 km (0.103 R)
• M24: 17,988,097 km (0.039 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.5 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 144.3

Radius: 11.1

Gravity: 1.17 G

Time & Orbit

Eccentricity (e): 0.105

Orbit Range: 3.13 AU - 3.87 AU

Year: 4163 Days

Day: 7.9 Hours

Environment

Temp: -199 °C

Axial Tilt: 10.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 54,400,571 km

• M1: 146,456 km (0.119 R)
• M2: 506,838 km (0.066 R)
• M3: 1,426,715 km (0.114 R)
• M4: 1,870,572 km (0.077 R)
• M5: 2,354,521 km (0.066 R)
• M6: 5,204,809 km (0.117 R)
• M7: 8,484,593 km (0.053 R)
• M8: 12,413,183 km (0.086 R)
• M9: 13,611,013 km (0.092 R)
• M10: 14,703,975 km (0.108 R)

Planet 8 - Ice Giant

Semi-Major Axis: 6.34 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 972

Radius: 4.7

Gravity: 44 G

Time & Orbit

Eccentricity (e): 0.074

Orbit Range: 5.87 AU - 6.81 AU

Year: 10150 Days

Day: 16.6 Hours

Environment

Temp: -228 °C

Axial Tilt: 8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (40)

Outer Limit: 54,400,571 km

• M1: 58,493 km (0.072 R)
• M2: 354,697 km (0.097 R)
• M3: 526,585 km (0.099 R)
• M4: 745,895 km (0.041 R)
• M5: 1,164,171 km (0.063 R)
• M6: 2,328,940 km (0.053 R)
• M7: 3,615,182 km (0.12 R)
• M8: 4,259,500 km (0.115 R)
• M9: 4,944,658 km (0.069 R)
• M10: 5,143,624 km (0.052 R)
• M11: 5,736,480 km (0.116 R)
• M12: 8,194,672 km (0.061 R)
• M13: 8,663,063 km (0.12 R)
• M14: 9,398,785 km (0.117 R)
• M15: 10,069,283 km (0.092 R)
• M16: 10,606,489 km (0.091 R)
• M17: 11,219,242 km (0.05 R)
• M18: 11,679,405 km (0.117 R)
• M19: 11,855,182 km (0.085 R)
• M20: 12,032,606 km (0.038 R)
• M21: 13,009,629 km (0.117 R)
• M22: 13,262,001 km (0.104 R)
• M23: 18,538,467 km (0.069 R)
• M24: 18,858,008 km (0.114 R)
• M25: 21,198,467 km (0.066 R)
• M26: 25,256,010 km (0.075 R)
• M27: 26,045,438 km (0.105 R)
• M28: 27,986,022 km (0.025 R)
• M29: 29,802,289 km (0.117 R)
• M30: 30,351,014 km (0.028 R)
• M31: 31,809,294 km (0.108 R)
• M32: 33,667,450 km (0.088 R)
• M33: 34,023,642 km (0.112 R)
• M34: 38,886,770 km (0.043 R)
• M35: 41,824,423 km (0.091 R)
• M36: 47,092,811 km (0.078 R)
• M37: 51,518,664 km (0.069 R)
• M38: 52,308,691 km (0.05 R)
• M39: 52,626,885 km (0.082 R)
• M40: 53,751,113 km (0.106 R)

Kuiper Belt

Range: 30 - 46 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 213 - 10,984 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit