🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.31 AU

Composition

Type: Inner System (Rocky)

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: 1.88

Radius: 1.29

Gravity: 1.13 G

Time & Orbit

Eccentricity (e): 0.2

Orbit Range: 0.49 AU - 0.73 AU

Year: 308 Days

Day: 17.4 Hours

Environment

Temp: -137 °C

Axial Tilt: 47.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 49,009,579 km

• M1: 380,577 km (0.084 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.63 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.37

Radius: 1.41

Gravity: 1.19 G

Time & Orbit

Eccentricity (e): 0.157

Orbit Range: 0.53 AU - 0.73 AU

Year: 323 Days

Day: 16.1 Hours

Environment

Temp: -123 °C

Axial Tilt: 24 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 49,009,579 km

• M1: 484,248 km (0.104 R)

Planet 3 - Terrestrial

Semi-Major Axis: 0.65 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.18

Radius: 1.77

Gravity: 1.33 G

Time & Orbit

Eccentricity (e): 0.197

Orbit Range: 0.52 AU - 0.78 AU

Year: 338 Days

Day: 43.3 Hours

Environment

Temp: -125 °C

Axial Tilt: 22 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Asteroid Belt

Center: 0.97 AU

Composition

Type: Main (Rocky/Icy Mix)

A dense region of planetesimals and debris.

Boundary

Planet 4 - Gas Giant

Semi-Major Axis: 1.29 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 862

Radius: 12.9

Gravity: 5.18 G

Time & Orbit

Eccentricity (e): 0.055

Orbit Range: 1.22 AU - 1.36 AU

Year: 946 Days

Day: 7.3 Hours

Environment

Temp: -177 °C

Axial Tilt: 39.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 49,009,579 km

• M1: 160,369 km (0.085 R)
• M2: 783,444 km (0.103 R)
• M3: 1,345,633 km (0.031 R)
• M4: 1,969,755 km (0.066 R)
• M5: 2,378,606 km (0.098 R)
• M6: 2,921,946 km (0.114 R)
• M7: 3,775,102 km (0.118 R)
• M8: 4,345,669 km (0.065 R)
• M9: 4,898,732 km (0.108 R)
• M10: 5,681,578 km (0.109 R)
• M11: 6,523,514 km (0.095 R)
• M12: 7,546,465 km (0.117 R)
• M13: 8,509,875 km (0.041 R)
• M14: 9,234,677 km (0.117 R)
• M15: 10,492,196 km (0.05 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.83 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 722.3

Radius: 14.3

Gravity: 3.53 G

Time & Orbit

Eccentricity (e): 0.068

Orbit Range: 2.64 AU - 3.02 AU

Year: 3074 Days

Day: 7.9 Hours

Environment

Temp: -206 °C

Axial Tilt: 5.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 49,009,579 km

• M1: 177,872 km (0.049 R)
• M2: 1,435,840 km (0.119 R)
• M3: 2,055,624 km (0.062 R)
• M4: 3,313,294 km (0.045 R)
• M5: 4,591,009 km (0.032 R)
• M6: 5,305,339 km (0.102 R)
• M7: 6,010,842 km (0.091 R)
• M8: 7,771,310 km (0.117 R)
• M9: 8,405,605 km (0.066 R)
• M10: 9,219,567 km (0.097 R)
• M11: 11,170,473 km (0.088 R)
• M12: 12,510,720 km (0.041 R)
• M13: 14,743,768 km (0.113 R)
• M14: 15,561,320 km (0.094 R)
• M15: 17,680,972 km (0.1 R)
• M16: 18,486,856 km (0.103 R)
• M17: 21,566,777 km (0.09 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.42 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 295.9

Radius: 9.4

Gravity: 3.35 G

Time & Orbit

Eccentricity (e): 0.21

Orbit Range: 2.7 AU - 4.14 AU

Year: 4084 Days

Day: 11.2 Hours

Environment

Temp: -217 °C

Axial Tilt: 22.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 49,009,579 km

• M1: 117,135 km (0.089 R)
• M2: 469,438 km (0.101 R)
• M3: 896,241 km (0.081 R)
• M4: 1,204,861 km (0.097 R)
• M5: 1,554,621 km (0.042 R)
• M6: 2,072,080 km (0.116 R)
• M7: 2,421,092 km (0.071 R)
• M8: 4,421,066 km (0.092 R)
• M9: 5,612,463 km (0.099 R)
• M10: 6,976,198 km (0.038 R)
• M11: 7,641,459 km (0.084 R)
• M12: 9,744,955 km (0.109 R)
• M13: 10,498,779 km (0.063 R)
• M14: 11,089,241 km (0.113 R)
• M15: 11,910,833 km (0.08 R)
• M16: 13,308,975 km (0.056 R)
• M17: 13,860,392 km (0.091 R)
• M18: 16,585,318 km (0.069 R)
• M19: 17,934,541 km (0.043 R)
• M20: 18,550,884 km (0.11 R)
• M21: 19,181,140 km (0.116 R)

Planet 7 - Ice Giant

Semi-Major Axis: 7.65 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 392.3

Radius: 7.6

Gravity: 6.79 G

Time & Orbit

Eccentricity (e): 0.126

Orbit Range: 6.69 AU - 8.61 AU

Year: 13662 Days

Day: 22.5 Hours

Environment

Temp: -234 °C

Axial Tilt: 8.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (35)

Outer Limit: 49,009,579 km

• M1: 94,546 km (0.088 R)
• M2: 379,829 km (0.11 R)
• M3: 1,312,422 km (0.082 R)
• M4: 1,580,202 km (0.12 R)
• M5: 1,950,008 km (0.099 R)
• M6: 2,301,414 km (0.108 R)
• M7: 2,929,725 km (0.116 R)
• M8: 3,272,304 km (0.047 R)
• M9: 3,615,930 km (0.085 R)
• M10: 3,902,709 km (0.092 R)
• M11: 4,376,037 km (0.081 R)
• M12: 4,732,529 km (0.078 R)
• M13: 5,012,725 km (0.044 R)
• M14: 5,674,995 km (0.07 R)
• M15: 8,056,444 km (0.101 R)
• M16: 9,540,006 km (0.086 R)
• M17: 9,937,637 km (0.093 R)
• M18: 10,607,387 km (0.115 R)
• M19: 10,980,334 km (0.113 R)
• M20: 11,979,498 km (0.09 R)
• M21: 13,527,836 km (0.115 R)
• M22: 18,049,432 km (0.084 R)
• M23: 20,239,246 km (0.108 R)
• M24: 24,303,221 km (0.062 R)
• M25: 26,867,927 km (0.07 R)
• M26: 28,777,095 km (0.096 R)
• M27: 29,190,285 km (0.099 R)
• M28: 30,560,601 km (0.117 R)
• M29: 33,315,296 km (0.07 R)
• M30: 33,656,529 km (0.061 R)
• M31: 34,461,964 km (0.101 R)
• M32: 37,199,007 km (0.094 R)
• M33: 44,051,187 km (0.034 R)
• M34: 46,132,991 km (0.034 R)
• M35: 48,863,003 km (0.076 R)

Kuiper Belt

Range: 30 - 48 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 225 - 14,053 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit