🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.45 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.89 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.78

Radius: 0.91

Gravity: 0.94 G

Time & Orbit

Eccentricity (e): 0.045

Orbit Range: 0.85 AU - 0.93 AU

Year: 313 Days

Day: 32.8 Hours

Environment

Temp: 34 °C

Axial Tilt: 7.1 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Planet 2 - Terrestrial

Semi-Major Axis: 1.03 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.69

Radius: 1.69

Gravity: 1.29 G

Time & Orbit

Eccentricity (e): 0.227

Orbit Range: 0.8 AU - 1.26 AU

Year: 390 Days

Day: 21.5 Hours

Environment

Temp: 22 °C

Axial Tilt: 3.6 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Planet 3 - Terrestrial

Semi-Major Axis: 1.05 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.89

Radius: 1.72

Gravity: 1.31 G

Time & Orbit

Eccentricity (e): 0.01

Orbit Range: 1.04 AU - 1.06 AU

Year: 401 Days

Day: 39.9 Hours

Environment

Temp: 11 °C

Axial Tilt: 28 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Planet 4 - Terrestrial

Semi-Major Axis: 1.87 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.88

Radius: 1.89

Gravity: 1.37 G

Time & Orbit

Eccentricity (e): 0.143

Orbit Range: 1.6 AU - 2.14 AU

Year: 953 Days

Day: 38.5 Hours

Environment

Temp: -58 °C

Axial Tilt: 9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Terrestrial

Semi-Major Axis: 3.68 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.28

Radius: 1.79

Gravity: 1.34 G

Time & Orbit

Eccentricity (e): 0.182

Orbit Range: 3.01 AU - 4.35 AU

Year: 2632 Days

Day: 12.1 Hours

Environment

Temp: -116 °C

Axial Tilt: 11.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 6 - Gas Giant

Semi-Major Axis: 4.74 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 158

Radius: 8.4

Gravity: 2.24 G

Time & Orbit

Eccentricity (e): 0.101

Orbit Range: 4.26 AU - 5.22 AU

Year: 3847 Days

Day: 7.2 Hours

Environment

Temp: -138 °C

Axial Tilt: 5.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 79,343,928 km

• M1: 104,569 km (0.079 R)
• M2: 529,876 km (0.096 R)
• M3: 843,283 km (0.081 R)
• M4: 1,511,836 km (0.069 R)
• M5: 2,058,317 km (0.1 R)
• M6: 3,440,452 km (0.104 R)
• M7: 3,803,227 km (0.112 R)
• M8: 4,464,449 km (0.113 R)
• M9: 5,112,208 km (0.112 R)
• M10: 5,608,873 km (0.03 R)
• M11: 7,433,668 km (0.111 R)
• M12: 9,928,063 km (0.119 R)
• M13: 10,204,819 km (0.098 R)
• M14: 11,820,027 km (0.086 R)
• M15: 13,179,722 km (0.114 R)
• M16: 14,113,362 km (0.117 R)
• M17: 14,463,571 km (0.063 R)

Planet 7 - Gas Giant

Semi-Major Axis: 8.1 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 483.1

Radius: 11.9

Gravity: 3.41 G

Time & Orbit

Eccentricity (e): 0.184

Orbit Range: 6.61 AU - 9.59 AU

Year: 8594 Days

Day: 6.4 Hours

Environment

Temp: -163 °C

Axial Tilt: 29.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 79,343,928 km

• M1: 148,700 km (0.04 R)
• M2: 854,802 km (0.096 R)
• M3: 1,314,816 km (0.09 R)
• M4: 2,062,655 km (0.11 R)
• M5: 2,757,238 km (0.091 R)
• M6: 3,332,143 km (0.086 R)
• M7: 5,244,153 km (0.108 R)
• M8: 6,130,521 km (0.115 R)
• M9: 9,892,159 km (0.044 R)
• M10: 10,361,298 km (0.11 R)
• M11: 11,548,208 km (0.106 R)
• M12: 12,823,529 km (0.068 R)
• M13: 15,278,281 km (0.093 R)
• M14: 29,578,491 km (0.114 R)
• M15: 30,751,637 km (0.071 R)
• M16: 33,190,681 km (0.107 R)
• M17: 36,862,860 km (0.082 R)
• M18: 38,106,766 km (0.07 R)

Planet 8 - Ice Giant

Semi-Major Axis: 14.35 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 756.6

Radius: 5.5

Gravity: 25.01 G

Time & Orbit

Eccentricity (e): 0.215

Orbit Range: 11.26 AU - 17.44 AU

Year: 20264 Days

Day: 23.7 Hours

Environment

Temp: -184 °C

Axial Tilt: 14.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (39)

Outer Limit: 79,343,928 km

• M1: 69,563 km (0.1 R)
• M2: 259,104 km (0.079 R)
• M3: 771,626 km (0.109 R)
• M4: 1,191,996 km (0.079 R)
• M5: 1,846,187 km (0.09 R)
• M6: 3,467,379 km (0.109 R)
• M7: 3,705,838 km (0.116 R)
• M8: 3,987,082 km (0.116 R)
• M9: 7,196,555 km (0.115 R)
• M10: 7,486,775 km (0.035 R)
• M11: 8,299,091 km (0.072 R)
• M12: 12,620,974 km (0.076 R)
• M13: 13,620,886 km (0.117 R)
• M14: 14,140,140 km (0.064 R)
• M15: 14,519,072 km (0.065 R)
• M16: 15,139,454 km (0.032 R)
• M17: 15,456,153 km (0.071 R)
• M18: 19,053,533 km (0.09 R)
• M19: 23,276,681 km (0.081 R)
• M20: 25,105,365 km (0.064 R)
• M21: 27,965,078 km (0.068 R)
• M22: 33,379,174 km (0.042 R)
• M23: 37,688,790 km (0.069 R)
• M24: 39,901,193 km (0.117 R)
• M25: 40,657,410 km (0.07 R)
• M26: 41,732,271 km (0.117 R)
• M27: 43,938,540 km (0.119 R)
• M28: 44,259,876 km (0.083 R)
• M29: 48,925,535 km (0.094 R)
• M30: 49,270,807 km (0.106 R)
• M31: 49,444,041 km (0.037 R)
• M32: 51,554,867 km (0.059 R)
• M33: 54,092,496 km (0.028 R)
• M34: 58,634,287 km (0.119 R)
• M35: 61,799,329 km (0.119 R)
• M36: 64,040,156 km (0.114 R)
• M37: 66,123,755 km (0.053 R)
• M38: 66,545,770 km (0.094 R)
• M39: 69,768,857 km (0.112 R)

Kuiper Belt

Range: 30 - 51 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 492 - 17,672 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit