🌌 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: 3.83

Radius: 1.71

Gravity: 1.31 G

Time & Orbit

Eccentricity (e): 0.174

Orbit Range: 0.42 AU - 0.6 AU

Year: 239 Days

Day: 44.1 Hours

Environment

Temp: -121 °C

Axial Tilt: 5.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.69 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 365.1

Radius: 13.2

Gravity: 2.1 G

Time & Orbit

Eccentricity (e): 0.051

Orbit Range: 0.65 AU - 0.73 AU

Year: 376 Days

Day: 11 Hours

Environment

Temp: -135 °C

Axial Tilt: 44.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 34,076,306 km

• M1: 164,109 km (0.1 R)
• M2: 580,739 km (0.042 R)
• M3: 1,039,406 km (0.034 R)
• M4: 1,455,138 km (0.046 R)
• M5: 1,892,862 km (0.066 R)
• M6: 2,428,123 km (0.116 R)
• M7: 3,254,950 km (0.108 R)
• M8: 3,948,037 km (0.12 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.15 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 808.4

Radius: 13.5

Gravity: 4.44 G

Time & Orbit

Eccentricity (e): 0.131

Orbit Range: 1 AU - 1.3 AU

Year: 809 Days

Day: 13.3 Hours

Environment

Temp: -164 °C

Axial Tilt: 16.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 34,076,306 km

• M1: 168,597 km (0.07 R)
• M2: 872,305 km (0.062 R)
• M3: 2,079,410 km (0.107 R)
• M4: 2,642,198 km (0.085 R)
• M5: 3,685,344 km (0.081 R)
• M6: 5,763,408 km (0.062 R)
• M7: 6,402,938 km (0.052 R)
• M8: 7,438,904 km (0.072 R)
• M9: 8,505,686 km (0.037 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.4 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 501.2

Radius: 13.4

Gravity: 2.79 G

Time & Orbit

Eccentricity (e): 0.125

Orbit Range: 1.23 AU - 1.58 AU

Year: 1087 Days

Day: 9.8 Hours

Environment

Temp: -173 °C

Axial Tilt: 24.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 34,076,306 km

• M1: 166,652 km (0.071 R)
• M2: 613,950 km (0.053 R)
• M3: 1,229,246 km (0.076 R)
• M4: 1,892,114 km (0.08 R)
• M5: 2,393,865 km (0.116 R)
• M6: 3,035,939 km (0.095 R)
• M7: 3,483,087 km (0.108 R)
• M8: 3,928,141 km (0.069 R)
• M9: 5,381,783 km (0.085 R)
• M10: 6,021,314 km (0.078 R)
• M11: 6,644,240 km (0.101 R)
• M12: 7,191,918 km (0.07 R)
• M13: 8,430,588 km (0.098 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.49 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 421

Radius: 11.6

Gravity: 3.13 G

Time & Orbit

Eccentricity (e): 0.127

Orbit Range: 1.3 AU - 1.68 AU

Year: 1193 Days

Day: 6.4 Hours

Environment

Temp: -176 °C

Axial Tilt: 178.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 34,076,306 km

• M1: 144,362 km (0.077 R)
• M2: 526,734 km (0.064 R)
• M3: 896,690 km (0.106 R)
• M4: 1,339,051 km (0.037 R)
• M5: 1,799,064 km (0.097 R)
• M6: 2,236,039 km (0.035 R)
• M7: 2,636,363 km (0.056 R)
• M8: 3,231,613 km (0.045 R)
• M9: 4,088,211 km (0.059 R)
• M10: 4,450,537 km (0.104 R)
• M11: 5,393,602 km (0.051 R)
• M12: 7,075,082 km (0.108 R)
• M13: 8,781,993 km (0.03 R)
• M14: 9,332,663 km (0.079 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.96 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 182.6

Radius: 8.4

Gravity: 2.59 G

Time & Orbit

Eccentricity (e): 0.105

Orbit Range: 4.44 AU - 5.48 AU

Year: 7247 Days

Day: 5.7 Hours

Environment

Temp: -226 °C

Axial Tilt: 29.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 34,076,306 km

• M1: 1,339,649 km (0.102 R)
• M2: 1,763,011 km (0.111 R)
• M3: 2,215,694 km (0.067 R)
• M4: 6,011,142 km (0.097 R)
• M5: 6,331,131 km (0.064 R)
• M6: 8,070,356 km (0.083 R)
• M7: 8,568,816 km (0.119 R)
• M8: 9,354,953 km (0.108 R)
• M9: 12,604,219 km (0.107 R)
• M10: 13,178,226 km (0.103 R)
• M11: 14,173,201 km (0.099 R)
• M12: 15,978,399 km (0.084 R)
• M13: 22,375,802 km (0.034 R)
• M14: 24,224,982 km (0.114 R)

Planet 7 - Ice Giant

Semi-Major Axis: 6.86 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 384.7

Radius: 6.6

Gravity: 8.83 G

Time & Orbit

Eccentricity (e): 0.054

Orbit Range: 6.49 AU - 7.23 AU

Year: 11787 Days

Day: 22.4 Hours

Environment

Temp: -216 °C

Axial Tilt: 10.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 34,076,306 km

• M1: 83,326 km (0.103 R)
• M2: 714,031 km (0.106 R)
• M3: 1,048,980 km (0.081 R)
• M4: 2,069,387 km (0.079 R)
• M5: 2,714,902 km (0.115 R)
• M6: 3,117,769 km (0.115 R)
• M7: 3,633,134 km (0.064 R)
• M8: 4,510,525 km (0.093 R)
• M9: 6,639,453 km (0.075 R)
• M10: 8,026,225 km (0.068 R)
• M11: 8,631,498 km (0.064 R)
• M12: 10,128,823 km (0.114 R)
• M13: 11,791,454 km (0.079 R)
• M14: 12,687,395 km (0.06 R)
• M15: 13,448,250 km (0.072 R)
• M16: 14,677,496 km (0.096 R)
• M17: 16,936,274 km (0.046 R)
• M18: 18,887,479 km (0.119 R)
• M19: 20,505,231 km (0.112 R)
• M20: 28,986,083 km (0.063 R)
• M21: 35,168,515 km (0.097 R)
• M22: 37,370,446 km (0.103 R)
• M23: 40,530,102 km (0.077 R)
• M24: 43,078,652 km (0.035 R)

Planet 8 - Ice Giant

Semi-Major Axis: 7.24 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 150.7

Radius: 5.8

Gravity: 4.48 G

Time & Orbit

Eccentricity (e): 0.233

Orbit Range: 5.55 AU - 8.93 AU

Year: 12780 Days

Day: 18.7 Hours

Environment

Temp: -232 °C

Axial Tilt: 24.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 34,076,306 km

• M1: 72,106 km (0.091 R)
• M2: 662,868 km (0.09 R)
• M3: 1,808,489 km (0.116 R)
• M4: 2,136,108 km (0.082 R)
• M5: 2,520,126 km (0.11 R)
• M6: 2,738,090 km (0.09 R)
• M7: 3,879,970 km (0.096 R)
• M8: 5,367,272 km (0.111 R)
• M9: 8,020,391 km (0.056 R)
• M10: 9,027,932 km (0.056 R)
• M11: 11,242,878 km (0.041 R)
• M12: 12,397,475 km (0.072 R)
• M13: 12,976,867 km (0.117 R)
• M14: 13,354,752 km (0.09 R)
• M15: 15,900,608 km (0.085 R)
• M16: 16,965,147 km (0.071 R)
• M17: 21,325,625 km (0.065 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: 498 - 14,241 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit