🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.31 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.61 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.3

Radius: 1.11

Gravity: 1.06 G

Time & Orbit

Eccentricity (e): 0.135

Orbit Range: 0.53 AU - 0.69 AU

Year: 303 Days

Day: 16.2 Hours

Environment

Temp: -131 °C

Axial Tilt: 26.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.63 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.81

Radius: 1.51

Gravity: 1.23 G

Time & Orbit

Eccentricity (e): 0.032

Orbit Range: 0.61 AU - 0.65 AU

Year: 318 Days

Day: 20.1 Hours

Environment

Temp: -135 °C

Axial Tilt: 25.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 63,515,779 km

• M1: 35,155 km (0.115 R)

Planet 3 - Terrestrial

Semi-Major Axis: 0.63 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.49

Radius: 1.44

Gravity: 1.2 G

Time & Orbit

Eccentricity (e): 0.067

Orbit Range: 0.59 AU - 0.67 AU

Year: 318 Days

Day: 34.7 Hours

Environment

Temp: -137 °C

Axial Tilt: 20.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Gas Giant

Semi-Major Axis: 0.79 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 218.5

Radius: 13.5

Gravity: 1.2 G

Time & Orbit

Eccentricity (e): 0.208

Orbit Range: 0.63 AU - 0.95 AU

Year: 446 Days

Day: 13.1 Hours

Environment

Temp: -143 °C

Axial Tilt: 31.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 63,515,779 km

• M1: 168,148 km (0.032 R)
• M2: 605,123 km (0.043 R)
• M3: 1,078,601 km (0.108 R)
• M4: 1,829,283 km (0.094 R)
• M5: 2,324,003 km (0.042 R)
• M6: 3,216,653 km (0.091 R)
• M7: 3,731,868 km (0.071 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.01 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 742

Radius: 14.4

Gravity: 3.58 G

Time & Orbit

Eccentricity (e): 0.13

Orbit Range: 0.88 AU - 1.14 AU

Year: 645 Days

Day: 8.7 Hours

Environment

Temp: -165 °C

Axial Tilt: 20.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 63,515,779 km

• M1: 179,667 km (0.06 R)
• M2: 712,684 km (0.115 R)
• M3: 1,267,543 km (0.114 R)
• M4: 1,728,903 km (0.101 R)
• M5: 2,198,939 km (0.062 R)
• M6: 2,700,092 km (0.116 R)
• M7: 4,669,847 km (0.111 R)
• M8: 6,012,787 km (0.11 R)
• M9: 6,879,408 km (0.061 R)
• M10: 7,850,896 km (0.113 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.63 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 528.6

Radius: 14.6

Gravity: 2.48 G

Time & Orbit

Eccentricity (e): 0.209

Orbit Range: 3.66 AU - 5.6 AU

Year: 6334 Days

Day: 8.1 Hours

Environment

Temp: -206 °C

Axial Tilt: 44.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 63,515,779 km

• M1: 181,612 km (0.058 R)
• M2: 852,259 km (0.117 R)
• M3: 1,361,640 km (0.052 R)
• M4: 2,109,180 km (0.064 R)
• M5: 2,745,420 km (0.049 R)
• M6: 3,423,697 km (0.1 R)
• M7: 4,045,426 km (0.117 R)
• M8: 4,534,910 km (0.051 R)
• M9: 5,694,144 km (0.114 R)
• M10: 7,357,822 km (0.062 R)
• M11: 8,168,044 km (0.102 R)
• M12: 9,494,378 km (0.06 R)
• M13: 12,117,278 km (0.073 R)
• M14: 14,505,159 km (0.045 R)
• M15: 16,261,887 km (0.051 R)
• M16: 16,815,698 km (0.085 R)
• M17: 17,766,542 km (0.095 R)
• M18: 19,430,819 km (0.091 R)
• M19: 22,231,440 km (0.12 R)
• M20: 25,046,424 km (0.116 R)
• M21: 26,202,665 km (0.12 R)
• M22: 31,564,852 km (0.11 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.01 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 251.4

Radius: 11.2

Gravity: 2 G

Time & Orbit

Eccentricity (e): 0.146

Orbit Range: 4.28 AU - 5.74 AU

Year: 7130 Days

Day: 5.5 Hours

Environment

Temp: -212 °C

Axial Tilt: 43.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 63,515,779 km

• M1: 139,276 km (0.058 R)
• M2: 770,130 km (0.07 R)
• M3: 1,486,255 km (0.078 R)
• M4: 2,639,056 km (0.106 R)
• M5: 6,920,697 km (0.093 R)
• M6: 8,080,978 km (0.107 R)
• M7: 9,687,809 km (0.068 R)
• M8: 10,566,846 km (0.063 R)
• M9: 12,387,003 km (0.114 R)
• M10: 13,574,660 km (0.058 R)
• M11: 13,987,102 km (0.11 R)
• M12: 20,606,658 km (0.104 R)
• M13: 25,708,544 km (0.109 R)

Planet 8 - Gas Giant

Semi-Major Axis: 5.57 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 874.8

Radius: 11.1

Gravity: 7.1 G

Time & Orbit

Eccentricity (e): 0.157

Orbit Range: 4.7 AU - 6.44 AU

Year: 8358 Days

Day: 11.8 Hours

Environment

Temp: -217 °C

Axial Tilt: 5.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (35)

Outer Limit: 63,515,779 km

• M1: 166,353 km (0.05 R)
• M2: 705,204 km (0.11 R)
• M3: 1,405,173 km (0.098 R)
• M4: 1,761,515 km (0.064 R)
• M5: 2,110,527 km (0.084 R)
• M6: 2,702,486 km (0.098 R)
• M7: 3,126,895 km (0.042 R)
• M8: 3,977,359 km (0.066 R)
• M9: 4,443,206 km (0.118 R)
• M10: 5,037,559 km (0.116 R)
• M11: 5,484,557 km (0.084 R)
• M12: 5,923,328 km (0.12 R)
• M13: 6,871,629 km (0.105 R)
• M14: 7,709,077 km (0.067 R)
• M15: 8,613,247 km (0.105 R)
• M16: 9,160,925 km (0.105 R)
• M17: 10,075,417 km (0.111 R)
• M18: 10,787,353 km (0.109 R)
• M19: 12,425,749 km (0.093 R)
• M20: 13,974,984 km (0.114 R)
• M21: 16,884,064 km (0.083 R)
• M22: 17,381,328 km (0.111 R)
• M23: 18,630,021 km (0.111 R)
• M24: 19,392,073 km (0.112 R)
• M25: 21,305,430 km (0.058 R)
• M26: 21,970,392 km (0.097 R)
• M27: 25,134,985 km (0.079 R)
• M28: 27,994,549 km (0.095 R)
• M29: 30,224,754 km (0.037 R)
• M30: 31,596,865 km (0.069 R)
• M31: 32,461,691 km (0.102 R)
• M32: 34,238,614 km (0.071 R)
• M33: 36,314,135 km (0.079 R)
• M34: 42,910,653 km (0.092 R)
• M35: 46,144,211 km (0.112 R)

Planet 9 - Ice Giant

Semi-Major Axis: 7.3 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 343.9

Radius: 4.6

Gravity: 16.25 G

Time & Orbit

Eccentricity (e): 0.164

Orbit Range: 6.1 AU - 8.5 AU

Year: 12541 Days

Day: 16.5 Hours

Environment

Temp: -225 °C

Axial Tilt: 19.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 63,515,779 km

• M1: 57,296 km (0.065 R)
• M2: 311,014 km (0.071 R)
• M3: 834,906 km (0.037 R)
• M4: 1,647,222 km (0.051 R)
• M5: 10,199,134 km (0.072 R)
• M6: 10,500,275 km (0.115 R)
• M7: 15,959,998 km (0.082 R)
• M8: 16,502,889 km (0.099 R)
• M9: 18,574,221 km (0.084 R)
• M10: 20,652,584 km (0.036 R)
• M11: 27,229,206 km (0.114 R)
• M12: 27,517,930 km (0.045 R)
• M13: 30,934,296 km (0.068 R)
• M14: 31,990,308 km (0.034 R)
• M15: 34,062,837 km (0.093 R)
• M16: 36,339,268 km (0.113 R)
• M17: 38,352,257 km (0.029 R)
• M18: 40,065,003 km (0.039 R)

Planet 10 - Ice Giant

Semi-Major Axis: 8.3 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 689.5

Radius: 6

Gravity: 19.15 G

Time & Orbit

Eccentricity (e): 0.023

Orbit Range: 8.11 AU - 8.49 AU

Year: 15204 Days

Day: 24.3 Hours

Environment

Temp: -237 °C

Axial Tilt: 3.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 63,515,779 km

• M1: 74,649 km (0.084 R)
• M2: 574,605 km (0.069 R)
• M3: 1,176,886 km (0.097 R)
• M4: 1,982,920 km (0.103 R)
• M5: 2,702,486 km (0.063 R)
• M6: 5,296,662 km (0.09 R)
• M7: 5,972,097 km (0.115 R)
• M8: 7,722,691 km (0.077 R)
• M9: 8,342,475 km (0.046 R)
• M10: 9,046,482 km (0.099 R)
• M11: 10,745,166 km (0.084 R)
• M12: 11,947,634 km (0.085 R)
• M13: 14,759,625 km (0.099 R)
• M14: 17,497,117 km (0.05 R)
• M15: 23,361,503 km (0.073 R)
• M16: 28,033,893 km (0.094 R)
• M17: 37,275,002 km (0.067 R)
• M18: 38,216,122 km (0.114 R)
• M19: 42,139,626 km (0.064 R)
• M20: 49,314,639 km (0.094 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: 385 - 18,425 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit