🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.26 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.51 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.11

Radius: 1.57

Gravity: 1.26 G

Time & Orbit

Eccentricity (e): 0.148

Orbit Range: 0.43 AU - 0.59 AU

Year: 239 Days

Day: 28.3 Hours

Environment

Temp: -107 °C

Axial Tilt: 13.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.68 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 167.6

Radius: 10.6

Gravity: 1.49 G

Time & Orbit

Eccentricity (e): 0.018

Orbit Range: 0.67 AU - 0.69 AU

Year: 368 Days

Day: 9.6 Hours

Environment

Temp: -146 °C

Axial Tilt: 23.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 24,778,436 km

• M1: 131,796 km (0.045 R)
• M2: 492,775 km (0.107 R)
• M3: 909,256 km (0.069 R)
• M4: 1,335,161 km (0.059 R)
• M5: 1,666,221 km (0.099 R)
• M6: 2,507,709 km (0.105 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.12 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 723.7

Radius: 13.5

Gravity: 3.97 G

Time & Orbit

Eccentricity (e): 0.026

Orbit Range: 1.09 AU - 1.15 AU

Year: 778 Days

Day: 12 Hours

Environment

Temp: -156 °C

Axial Tilt: 19.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 24,778,436 km

• M1: 167,998 km (0.051 R)
• M2: 709,692 km (0.117 R)
• M3: 1,138,889 km (0.085 R)
• M4: 2,100,205 km (0.098 R)
• M5: 2,899,506 km (0.082 R)
• M6: 4,245,288 km (0.032 R)
• M7: 4,822,287 km (0.096 R)
• M8: 5,470,046 km (0.098 R)
• M9: 6,700,189 km (0.081 R)
• M10: 7,484,980 km (0.112 R)
• M11: 8,737,563 km (0.106 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.42 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 220.5

Radius: 14.6

Gravity: 1.03 G

Time & Orbit

Eccentricity (e): 0.094

Orbit Range: 1.29 AU - 1.55 AU

Year: 1110 Days

Day: 8.6 Hours

Environment

Temp: -183 °C

Axial Tilt: 38.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 24,778,436 km

• M1: 181,612 km (0.102 R)
• M2: 669,899 km (0.116 R)
• M3: 1,241,064 km (0.111 R)
• M4: 1,854,266 km (0.1 R)
• M5: 2,339,860 km (0.114 R)
• M6: 3,158,310 km (0.119 R)
• M7: 3,669,187 km (0.065 R)
• M8: 4,309,915 km (0.028 R)
• M9: 5,024,843 km (0.095 R)
• M10: 7,455,060 km (0.11 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.4 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 513.8

Radius: 9.7

Gravity: 5.46 G

Time & Orbit

Eccentricity (e): 0.15

Orbit Range: 2.04 AU - 2.76 AU

Year: 2439 Days

Day: 7.9 Hours

Environment

Temp: -187 °C

Axial Tilt: 24.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 24,778,436 km

• M1: 120,576 km (0.065 R)
• M2: 487,240 km (0.11 R)
• M3: 1,161,029 km (0.045 R)
• M4: 1,462,768 km (0.061 R)
• M5: 1,806,993 km (0.099 R)
• M6: 2,256,085 km (0.115 R)
• M7: 2,763,970 km (0.09 R)
• M8: 3,069,300 km (0.044 R)
• M9: 3,380,313 km (0.11 R)
• M10: 4,301,537 km (0.118 R)
• M11: 5,690,254 km (0.077 R)
• M12: 6,239,428 km (0.102 R)
• M13: 7,472,563 km (0.103 R)
• M14: 8,162,359 km (0.078 R)
• M15: 9,360,189 km (0.115 R)
• M16: 10,414,555 km (0.065 R)
• M17: 12,344,816 km (0.109 R)
• M18: 13,394,545 km (0.082 R)
• M19: 13,786,641 km (0.088 R)
• M20: 14,321,303 km (0.08 R)
• M21: 15,055,679 km (0.059 R)
• M22: 15,622,805 km (0.116 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.7 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 292

Radius: 12.6

Gravity: 1.84 G

Time & Orbit

Eccentricity (e): 0.2

Orbit Range: 2.96 AU - 4.44 AU

Year: 4669 Days

Day: 7.6 Hours

Environment

Temp: -201 °C

Axial Tilt: 26.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 24,778,436 km

• M1: 156,928 km (0.092 R)
• M2: 655,687 km (0.095 R)
• M3: 1,367,624 km (0.112 R)
• M4: 2,423,186 km (0.095 R)
• M5: 3,347,402 km (0.032 R)
• M6: 4,583,380 km (0.096 R)
• M7: 8,714,974 km (0.12 R)
• M8: 10,189,709 km (0.091 R)
• M9: 12,705,048 km (0.091 R)
• M10: 13,914,098 km (0.086 R)
• M11: 15,660,952 km (0.086 R)
• M12: 16,722,499 km (0.066 R)
• M13: 17,493,676 km (0.088 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.05 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 331

Radius: 13.9

Gravity: 1.71 G

Time & Orbit

Eccentricity (e): 0.238

Orbit Range: 3.09 AU - 5.01 AU

Year: 5347 Days

Day: 7.6 Hours

Environment

Temp: -204 °C

Axial Tilt: 36.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 24,778,436 km

• M1: 172,935 km (0.114 R)
• M2: 667,954 km (0.06 R)
• M3: 1,389,166 km (0.098 R)
• M4: 2,341,207 km (0.107 R)
• M5: 3,014,846 km (0.087 R)
• M6: 4,222,101 km (0.085 R)
• M7: 5,434,741 km (0.062 R)
• M8: 5,868,425 km (0.102 R)
• M9: 6,622,997 km (0.116 R)
• M10: 8,047,019 km (0.117 R)
• M11: 11,102,556 km (0.108 R)
• M12: 12,443,102 km (0.12 R)
• M13: 19,773,547 km (0.108 R)
• M14: 20,806,221 km (0.049 R)
• M15: 21,874,350 km (0.083 R)
• M16: 22,422,028 km (0.095 R)
• M17: 24,338,227 km (0.073 R)

Kuiper Belt

Range: 30 - 52 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 296 - 19,430 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit