🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.33 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.65 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.74

Radius: 1.25

Gravity: 1.11 G

Time & Orbit

Eccentricity (e): 0.058

Orbit Range: 0.61 AU - 0.69 AU

Year: 196 Days

Day: 17 Hours

Environment

Temp: 199 °C

Axial Tilt: 23.2 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 0.96 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.59

Radius: 1.2

Gravity: 1.1 G

Time & Orbit

Eccentricity (e): 0.181

Orbit Range: 0.79 AU - 1.13 AU

Year: 352 Days

Day: 25.1 Hours

Environment

Temp: 27 °C

Axial Tilt: 44.9 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Planet 3 - Terrestrial

Semi-Major Axis: 1.1 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.34

Radius: 0.65

Gravity: 0.8 G

Time & Orbit

Eccentricity (e): 0.031

Orbit Range: 1.07 AU - 1.13 AU

Year: 432 Days

Day: 40.6 Hours

Environment

Temp: -8 °C

Axial Tilt: 112.9 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Satellites (1)

Outer Limit: 72,212,387 km

• M1: 99,333 km (0.028 R)

Planet 4 - Terrestrial

Semi-Major Axis: 1.5 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.66

Radius: 1.22

Gravity: 1.12 G

Time & Orbit

Eccentricity (e): 0.184

Orbit Range: 1.22 AU - 1.78 AU

Year: 688 Days

Day: 45.4 Hours

Environment

Temp: -54 °C

Axial Tilt: 5.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Terrestrial

Semi-Major Axis: 3.23 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.97

Radius: 0.99

Gravity: 0.99 G

Time & Orbit

Eccentricity (e): 0.224

Orbit Range: 2.51 AU - 3.95 AU

Year: 2175 Days

Day: 42.2 Hours

Environment

Temp: -107 °C

Axial Tilt: 18.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 72,212,387 km

• M1: 23,188 km (0.099 R)

Planet 6 - Terrestrial

Semi-Major Axis: 3.42 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.31

Radius: 1.11

Gravity: 1.06 G

Time & Orbit

Eccentricity (e): 0.062

Orbit Range: 3.21 AU - 3.63 AU

Year: 2370 Days

Day: 33.4 Hours

Environment

Temp: -110 °C

Axial Tilt: 19.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 7 - Terrestrial

Semi-Major Axis: 4.31 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.52

Radius: 1.83

Gravity: 1.35 G

Time & Orbit

Eccentricity (e): 0.102

Orbit Range: 3.87 AU - 4.75 AU

Year: 3353 Days

Day: 34.8 Hours

Environment

Temp: -138 °C

Axial Tilt: 12.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Asteroid Belt

Center: 8.87 AU

Composition

Type: Far Outer (Icy/Cometary)

A dense region of planetesimals and debris.

Boundary

Planet 8 - Ice Giant

Semi-Major Axis: 13.42 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 661.1

Radius: 3.8

Gravity: 45.78 G

Time & Orbit

Eccentricity (e): 0.217

Orbit Range: 10.51 AU - 16.33 AU

Year: 18423 Days

Day: 16 Hours

Environment

Temp: -180 °C

Axial Tilt: 34.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (34)

Outer Limit: 72,212,387 km

• M1: 47,423 km (0.095 R)
• M2: 173,234 km (0.095 R)
• M3: 490,382 km (0.075 R)
• M4: 642,373 km (0.084 R)
• M5: 868,416 km (0.049 R)
• M6: 1,055,413 km (0.063 R)
• M7: 1,254,827 km (0.114 R)
• M8: 1,401,283 km (0.101 R)
• M9: 1,782,309 km (0.072 R)
• M10: 2,400,298 km (0.115 R)
• M11: 2,674,212 km (0.062 R)
• M12: 3,889,545 km (0.11 R)
• M13: 5,431,599 km (0.096 R)
• M14: 5,984,064 km (0.026 R)
• M15: 6,231,948 km (0.106 R)
• M16: 7,671,379 km (0.083 R)
• M17: 9,992,390 km (0.107 R)
• M18: 10,165,923 km (0.12 R)
• M19: 11,249,161 km (0.101 R)
• M20: 12,012,559 km (0.061 R)
• M21: 14,956,945 km (0.086 R)
• M22: 15,184,034 km (0.078 R)
• M23: 20,685,945 km (0.045 R)
• M24: 20,967,787 km (0.049 R)
• M25: 22,912,709 km (0.111 R)
• M26: 30,299,852 km (0.096 R)
• M27: 30,907,219 km (0.11 R)
• M28: 31,029,740 km (0.064 R)
• M29: 43,274,625 km (0.106 R)
• M30: 44,667,231 km (0.109 R)
• M31: 52,254,237 km (0.076 R)
• M32: 54,365,661 km (0.071 R)
• M33: 60,847,737 km (0.116 R)
• M34: 67,208,040 km (0.107 R)

Planet 9 - Ice Giant

Semi-Major Axis: 14.33 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 566.8

Radius: 3

Gravity: 62.98 G

Time & Orbit

Eccentricity (e): 0.119

Orbit Range: 12.62 AU - 16.04 AU

Year: 20328 Days

Day: 19.8 Hours

Environment

Temp: -186 °C

Axial Tilt: 36.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (29)

Outer Limit: 72,212,387 km

• M1: 65,374 km (0.098 R)
• M2: 290,818 km (0.112 R)
• M3: 614,698 km (0.107 R)
• M4: 870,510 km (0.109 R)
• M5: 1,098,796 km (0.115 R)
• M6: 1,690,606 km (0.081 R)
• M7: 2,085,095 km (0.071 R)
• M8: 2,424,533 km (0.06 R)
• M9: 2,824,258 km (0.106 R)
• M10: 3,105,353 km (0.066 R)
• M11: 4,761,251 km (0.11 R)
• M12: 6,658,152 km (0.117 R)
• M13: 9,895,750 km (0.095 R)
• M14: 14,412,857 km (0.082 R)
• M15: 23,747,465 km (0.078 R)
• M16: 28,346,104 km (0.12 R)
• M17: 30,730,395 km (0.1 R)
• M18: 31,845,647 km (0.087 R)
• M19: 42,207,543 km (0.058 R)
• M20: 42,359,086 km (0.106 R)
• M21: 46,588,218 km (0.03 R)
• M22: 48,721,334 km (0.112 R)
• M23: 48,887,986 km (0.098 R)
• M24: 50,235,563 km (0.076 R)
• M25: 50,576,198 km (0.112 R)
• M26: 50,747,188 km (0.063 R)
• M27: 54,068,560 km (0.113 R)
• M28: 62,506,478 km (0.104 R)
• M29: 64,293,126 km (0.106 R)

Kuiper Belt

Range: 30 - 60 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 262 - 18,726 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit