🌌 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: 1.36

Radius: 1.13

Gravity: 1.07 G

Time & Orbit

Eccentricity (e): 0.015

Orbit Range: 0.63 AU - 0.65 AU

Year: 336 Days

Day: 24.5 Hours

Environment

Temp: -137 °C

Axial Tilt: 45.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 54,344,045 km

• M1: 213,626 km (0.055 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.92 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 690.9

Radius: 11.4

Gravity: 5.32 G

Time & Orbit

Eccentricity (e): 0.094

Orbit Range: 0.83 AU - 1.01 AU

Year: 579 Days

Day: 8.3 Hours

Environment

Temp: -154 °C

Axial Tilt: 28.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 54,344,045 km

• M1: 141,819 km (0.067 R)
• M2: 516,561 km (0.077 R)
• M3: 878,588 km (0.119 R)
• M4: 1,276,967 km (0.037 R)
• M5: 1,766,152 km (0.097 R)
• M6: 2,964,731 km (0.044 R)
• M7: 3,475,308 km (0.064 R)
• M8: 4,705,751 km (0.103 R)
• M9: 5,062,841 km (0.096 R)
• M10: 5,924,375 km (0.107 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.23 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 298.2

Radius: 8.1

Gravity: 4.55 G

Time & Orbit

Eccentricity (e): 0.155

Orbit Range: 1.04 AU - 1.42 AU

Year: 895 Days

Day: 12.2 Hours

Environment

Temp: -177 °C

Axial Tilt: 28 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 54,344,045 km

• M1: 100,679 km (0.062 R)
• M2: 370,255 km (0.1 R)
• M3: 647,011 km (0.114 R)
• M4: 1,286,691 km (0.086 R)
• M5: 1,557,763 km (0.096 R)
• M6: 1,961,976 km (0.097 R)
• M7: 2,266,109 km (0.078 R)
• M8: 3,541,430 km (0.103 R)
• M9: 4,052,606 km (0.1 R)
• M10: 6,168,519 km (0.025 R)
• M11: 6,662,341 km (0.101 R)
• M12: 7,268,063 km (0.102 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.99 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 266.3

Radius: 10.3

Gravity: 2.51 G

Time & Orbit

Eccentricity (e): 0.053

Orbit Range: 1.88 AU - 2.1 AU

Year: 1842 Days

Day: 11.3 Hours

Environment

Temp: -183 °C

Axial Tilt: 46.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 54,344,045 km

• M1: 128,056 km (0.12 R)
• M2: 637,437 km (0.102 R)
• M3: 1,232,088 km (0.061 R)
• M4: 1,595,760 km (0.096 R)
• M5: 2,083,749 km (0.113 R)
• M6: 2,510,252 km (0.106 R)
• M7: 3,132,280 km (0.102 R)
• M8: 4,152,089 km (0.103 R)
• M9: 4,483,299 km (0.071 R)
• M10: 4,851,160 km (0.079 R)
• M11: 5,647,918 km (0.095 R)
• M12: 6,368,980 km (0.053 R)
• M13: 7,273,897 km (0.108 R)
• M14: 8,845,872 km (0.104 R)
• M15: 9,606,128 km (0.056 R)
• M16: 11,123,350 km (0.102 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.01 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 309.1

Radius: 14.3

Gravity: 1.51 G

Time & Orbit

Eccentricity (e): 0.125

Orbit Range: 2.63 AU - 3.39 AU

Year: 3426 Days

Day: 5.1 Hours

Environment

Temp: -202 °C

Axial Tilt: 19.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 54,344,045 km

• M1: 178,470 km (0.045 R)
• M2: 995,574 km (0.115 R)
• M3: 1,526,796 km (0.091 R)
• M4: 2,473,152 km (0.09 R)
• M5: 3,015,444 km (0.094 R)
• M6: 3,875,482 km (0.043 R)
• M7: 7,817,536 km (0.101 R)
• M8: 8,964,952 km (0.054 R)
• M9: 10,479,331 km (0.073 R)
• M10: 16,747,482 km (0.066 R)

Planet 6 - Gas Giant

Semi-Major Axis: 5.13 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 229.2

Radius: 10.3

Gravity: 2.16 G

Time & Orbit

Eccentricity (e): 0.236

Orbit Range: 3.92 AU - 6.34 AU

Year: 7622 Days

Day: 9.5 Hours

Environment

Temp: -220 °C

Axial Tilt: 139.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 54,344,045 km

• M1: 131,197 km (0.079 R)
• M2: 464,352 km (0.039 R)
• M3: 1,016,966 km (0.093 R)
• M4: 1,705,416 km (0.038 R)
• M5: 2,766,065 km (0.082 R)
• M6: 3,320,474 km (0.097 R)
• M7: 3,708,830 km (0.102 R)
• M8: 4,701,562 km (0.045 R)
• M9: 6,651,720 km (0.093 R)
• M10: 7,205,082 km (0.069 R)
• M11: 7,683,496 km (0.079 R)
• M12: 8,219,505 km (0.063 R)
• M13: 8,742,200 km (0.045 R)
• M14: 9,326,679 km (0.105 R)
• M15: 12,165,448 km (0.119 R)
• M16: 12,894,289 km (0.074 R)
• M17: 14,546,299 km (0.093 R)
• M18: 17,524,792 km (0.078 R)
• M19: 18,835,270 km (0.116 R)
• M20: 23,900,055 km (0.105 R)

Planet 7 - Ice Giant

Semi-Major Axis: 9.13 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 304.8

Radius: 4.8

Gravity: 13.23 G

Time & Orbit

Eccentricity (e): 0.215

Orbit Range: 7.17 AU - 11.09 AU

Year: 18097 Days

Day: 18.6 Hours

Environment

Temp: -232 °C

Axial Tilt: 45.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 54,344,045 km

• M1: 60,587 km (0.089 R)
• M2: 228,586 km (0.096 R)
• M3: 527,332 km (0.039 R)
• M4: 737,518 km (0.087 R)
• M5: 1,081,443 km (0.049 R)
• M6: 1,838,558 km (0.114 R)
• M7: 2,945,283 km (0.046 R)
• M8: 3,405,296 km (0.112 R)
• M9: 3,746,529 km (0.108 R)
• M10: 7,692,472 km (0.041 R)
• M11: 10,325,843 km (0.086 R)
• M12: 11,668,185 km (0.075 R)
• M13: 17,737,969 km (0.06 R)
• M14: 26,118,891 km (0.104 R)
• M15: 29,122,816 km (0.088 R)
• M16: 32,119,411 km (0.099 R)
• M17: 44,431,764 km (0.12 R)
• M18: 46,162,163 km (0.116 R)
• M19: 48,387,880 km (0.091 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: 397 - 18,821 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit