🌌 Stone's Star System Generator

Asteroid Belt

Center: 1.2 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 2.39 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.75

Radius: 1.7

Gravity: 1.3 G

Time & Orbit

Eccentricity (e): 0.058

Orbit Range: 2.25 AU - 2.53 AU

Year: 1305 Days

Day: 18.9 Hours

Environment

Temp: -78 °C

Axial Tilt: 1.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 42,144,367 km

• M1: 140,921 km (0.102 R)

Planet 2 - Terrestrial

Semi-Major Axis: 2.86 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.36

Radius: 1.62

Gravity: 1.28 G

Time & Orbit

Eccentricity (e): 0.005

Orbit Range: 2.85 AU - 2.87 AU

Year: 1708 Days

Day: 33 Hours

Environment

Temp: -99 °C

Axial Tilt: 11.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 42,144,367 km

• M1: 1,434,344 km (0.092 R)

Planet 3 - Terrestrial

Semi-Major Axis: 3.43 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.84

Radius: 1.28

Gravity: 1.12 G

Time & Orbit

Eccentricity (e): 0.227

Orbit Range: 2.65 AU - 4.21 AU

Year: 2243 Days

Day: 47.1 Hours

Environment

Temp: -102 °C

Axial Tilt: 49.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Terrestrial

Semi-Major Axis: 3.66 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.66

Radius: 1.68

Gravity: 1.3 G

Time & Orbit

Eccentricity (e): 0.002

Orbit Range: 3.65 AU - 3.67 AU

Year: 2472 Days

Day: 47.9 Hours

Environment

Temp: -115 °C

Axial Tilt: 33 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 42,144,367 km

• M1: 298,448 km (0.075 R)
• M2: 558,449 km (0.104 R)

Planet 5 - Terrestrial

Semi-Major Axis: 3.99 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.44

Radius: 1.16

Gravity: 1.07 G

Time & Orbit

Eccentricity (e): 0.055

Orbit Range: 3.77 AU - 4.21 AU

Year: 2814 Days

Day: 41 Hours

Environment

Temp: -106 °C

Axial Tilt: 22.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Asteroid Belt

Center: 5.99 AU

Composition

Type: Main (Rocky/Icy Mix)

A dense region of planetesimals and debris.

Boundary

Planet 6 - Gas Giant

Semi-Major Axis: 7.98 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 314

Radius: 14.4

Gravity: 1.51 G

Time & Orbit

Eccentricity (e): 0.209

Orbit Range: 6.31 AU - 9.65 AU

Year: 7960 Days

Day: 11.4 Hours

Environment

Temp: -166 °C

Axial Tilt: 39 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 42,144,367 km

• M1: 180,864 km (0.086 R)
• M2: 1,223,112 km (0.113 R)
• M3: 1,739,374 km (0.098 R)
• M4: 3,074,535 km (0.109 R)
• M5: 3,735,608 km (0.107 R)
• M6: 4,268,326 km (0.107 R)
• M7: 5,039,653 km (0.068 R)
• M8: 5,575,064 km (0.056 R)
• M9: 6,242,570 km (0.117 R)
• M10: 6,827,796 km (0.075 R)
• M11: 7,774,751 km (0.115 R)
• M12: 8,927,552 km (0.097 R)
• M13: 10,016,475 km (0.11 R)
• M14: 14,034,823 km (0.063 R)
• M15: 15,331,239 km (0.082 R)
• M16: 20,536,945 km (0.095 R)
• M17: 24,517,894 km (0.039 R)
• M18: 27,412,463 km (0.082 R)
• M19: 29,614,843 km (0.117 R)
• M20: 30,252,130 km (0.071 R)
• M21: 31,271,939 km (0.108 R)

Planet 7 - Ice Giant

Semi-Major Axis: 15.83 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 972.8

Radius: 6.6

Gravity: 22.33 G

Time & Orbit

Eccentricity (e): 0.109

Orbit Range: 14.1 AU - 17.56 AU

Year: 22239 Days

Day: 21.9 Hours

Environment

Temp: -191 °C

Axial Tilt: 45.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (33)

Outer Limit: 42,144,367 km

• M1: 86,767 km (0.113 R)
• M2: 385,514 km (0.025 R)
• M3: 721,062 km (0.056 R)
• M4: 1,169,107 km (0.08 R)
• M5: 1,481,019 km (0.09 R)
• M6: 1,712,746 km (0.059 R)
• M7: 2,509,205 km (0.112 R)
• M8: 4,255,012 km (0.084 R)
• M9: 5,397,940 km (0.104 R)
• M10: 6,265,308 km (0.066 R)
• M11: 6,828,544 km (0.077 R)
• M12: 8,439,564 km (0.088 R)
• M13: 9,009,083 km (0.107 R)
• M14: 10,288,444 km (0.113 R)
• M15: 10,806,202 km (0.1 R)
• M16: 11,823,617 km (0.096 R)
• M17: 13,127,213 km (0.109 R)
• M18: 22,152,303 km (0.101 R)
• M19: 24,921,958 km (0.117 R)
• M20: 25,385,412 km (0.11 R)
• M21: 28,539,983 km (0.117 R)
• M22: 30,342,188 km (0.084 R)
• M23: 31,003,860 km (0.062 R)
• M24: 44,278,127 km (0.055 R)
• M25: 44,617,266 km (0.054 R)
• M26: 57,405,789 km (0.116 R)
• M27: 67,837,099 km (0.104 R)
• M28: 68,062,094 km (0.101 R)
• M29: 71,266,032 km (0.08 R)
• M30: 71,498,657 km (0.083 R)
• M31: 71,965,402 km (0.101 R)
• M32: 81,224,762 km (0.069 R)
• M33: 84,046,178 km (0.079 R)

Planet 8 - Ice Giant

Semi-Major Axis: 17.44 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 70.4

Radius: 3

Gravity: 7.82 G

Time & Orbit

Eccentricity (e): 0.01

Orbit Range: 17.27 AU - 17.61 AU

Year: 25717 Days

Day: 16.7 Hours

Environment

Temp: -200 °C

Axial Tilt: 33.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 42,144,367 km

• M1: 75,697 km (0.106 R)
• M2: 191,036 km (0.074 R)
• M3: 379,231 km (0.095 R)
• M4: 1,174,194 km (0.068 R)
• M5: 1,985,463 km (0.104 R)
• M6: 2,101,700 km (0.082 R)
• M7: 2,535,086 km (0.025 R)
• M8: 6,928,925 km (0.086 R)
• M9: 7,353,035 km (0.1 R)
• M10: 7,959,056 km (0.045 R)
• M11: 10,366,833 km (0.087 R)
• M12: 13,749,989 km (0.117 R)
• M13: 14,729,107 km (0.108 R)
• M14: 16,149,838 km (0.104 R)
• M15: 23,084,298 km (0.064 R)
• M16: 26,633,358 km (0.062 R)
• M17: 28,149,083 km (0.071 R)
• M18: 31,351,375 km (0.086 R)
• M19: 33,255,158 km (0.089 R)

Kuiper Belt

Range: 31.1 - 55.1 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 458 - 16,607 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit