🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.33 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.66 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.44

Radius: 0.72

Gravity: 0.85 G

Time & Orbit

Eccentricity (e): 0.194

Orbit Range: 0.53 AU - 0.79 AU

Year: 341 Days

Day: 37.8 Hours

Environment

Temp: -136 °C

Axial Tilt: 31.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.91 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 910.7

Radius: 8.4

Gravity: 12.91 G

Time & Orbit

Eccentricity (e): 0.028

Orbit Range: 0.88 AU - 0.94 AU

Year: 552 Days

Day: 6.2 Hours

Environment

Temp: -152 °C

Axial Tilt: 7.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 52,079,892 km

• M1: 104,419 km (0.091 R)
• M2: 380,278 km (0.077 R)
• M3: 768,484 km (0.117 R)
• M4: 1,116,000 km (0.101 R)
• M5: 1,485,507 km (0.114 R)
• M6: 2,117,259 km (0.079 R)
• M7: 2,411,817 km (0.098 R)
• M8: 3,036,089 km (0.112 R)
• M9: 3,504,929 km (0.048 R)
• M10: 4,050,362 km (0.05 R)
• M11: 4,491,826 km (0.101 R)
• M12: 4,765,291 km (0.043 R)
• M13: 6,668,325 km (0.088 R)
• M14: 6,939,995 km (0.11 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.97 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 406.8

Radius: 11.4

Gravity: 3.13 G

Time & Orbit

Eccentricity (e): 0.215

Orbit Range: 0.76 AU - 1.18 AU

Year: 607 Days

Day: 11.8 Hours

Environment

Temp: -150 °C

Axial Tilt: 25.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 52,079,892 km

• M1: 141,819 km (0.03 R)
• M2: 861,983 km (0.119 R)
• M3: 1,316,611 km (0.117 R)
• M4: 1,759,121 km (0.113 R)
• M5: 2,300,965 km (0.1 R)
• M6: 2,781,024 km (0.117 R)
• M7: 3,447,483 km (0.076 R)
• M8: 3,864,861 km (0.104 R)
• M9: 5,083,036 km (0.089 R)
• M10: 6,045,100 km (0.119 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.34 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 65.6

Radius: 8.3

Gravity: 0.95 G

Time & Orbit

Eccentricity (e): 0.128

Orbit Range: 2.04 AU - 2.64 AU

Year: 2276 Days

Day: 5.1 Hours

Environment

Temp: -201 °C

Axial Tilt: 46.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 52,079,892 km

• M1: 103,223 km (0.097 R)
• M2: 542,591 km (0.093 R)
• M3: 833,859 km (0.032 R)
• M4: 1,291,329 km (0.118 R)
• M5: 1,899,444 km (0.084 R)
• M6: 2,279,273 km (0.063 R)
• M7: 4,569,916 km (0.068 R)
• M8: 4,904,417 km (0.112 R)
• M9: 7,111,284 km (0.074 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.94 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 21.5

Radius: 9.4

Gravity: 0.24 G

Time & Orbit

Eccentricity (e): 0.141

Orbit Range: 2.53 AU - 3.35 AU

Year: 3205 Days

Day: 14.5 Hours

Environment

Temp: -206 °C

Axial Tilt: 16.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 52,079,892 km

• M1: 116,986 km (0.107 R)
• M2: 593,455 km (0.115 R)
• M3: 906,563 km (0.071 R)
• M4: 1,326,933 km (0.12 R)
• M5: 2,365,292 km (0.089 R)
• M6: 3,114,179 km (0.113 R)
• M7: 3,473,064 km (0.102 R)
• M8: 5,382,531 km (0.079 R)
• M9: 6,144,882 km (0.059 R)
• M10: 6,591,881 km (0.084 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.13 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 137.1

Radius: 13.3

Gravity: 0.78 G

Time & Orbit

Eccentricity (e): 0.001

Orbit Range: 3.13 AU - 3.13 AU

Year: 3521 Days

Day: 14.5 Hours

Environment

Temp: -205 °C

Axial Tilt: 27.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 52,079,892 km

• M1: 165,455 km (0.111 R)
• M2: 1,545,496 km (0.085 R)
• M3: 3,570,602 km (0.031 R)
• M4: 4,452,033 km (0.095 R)
• M5: 5,109,964 km (0.042 R)
• M6: 6,134,560 km (0.089 R)
• M7: 7,265,221 km (0.111 R)
• M8: 11,277,435 km (0.111 R)
• M9: 11,713,214 km (0.066 R)
• M10: 12,235,759 km (0.033 R)
• M11: 13,009,330 km (0.117 R)

Asteroid Belt

Center: 5.21 AU

Composition

Type: Outer System (Icy)

A dense region of planetesimals and debris.

Boundary

Planet 7 - Ice Giant

Semi-Major Axis: 7.28 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 563.3

Radius: 3

Gravity: 62.59 G

Time & Orbit

Eccentricity (e): 0.032

Orbit Range: 7.05 AU - 7.51 AU

Year: 12489 Days

Day: 20.7 Hours

Environment

Temp: -214 °C

Axial Tilt: 0.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (36)

Outer Limit: 52,079,892 km

• M1: 37,250 km (0.073 R)
• M2: 159,771 km (0.102 R)
• M3: 311,463 km (0.079 R)
• M4: 756,816 km (0.119 R)
• M5: 1,084,585 km (0.095 R)
• M6: 1,267,543 km (0.116 R)
• M7: 2,082,851 km (0.109 R)
• M8: 2,781,772 km (0.072 R)
• M9: 3,418,311 km (0.119 R)
• M10: 3,650,487 km (0.072 R)
• M11: 4,592,505 km (0.078 R)
• M12: 5,037,110 km (0.066 R)
• M13: 5,828,782 km (0.032 R)
• M14: 6,621,052 km (0.107 R)
• M15: 6,739,683 km (0.07 R)
• M16: 7,063,413 km (0.108 R)
• M17: 7,312,793 km (0.079 R)
• M18: 8,232,072 km (0.089 R)
• M19: 8,838,392 km (0.05 R)
• M20: 11,222,383 km (0.113 R)
• M21: 11,908,140 km (0.106 R)
• M22: 12,320,881 km (0.06 R)
• M23: 14,728,958 km (0.114 R)
• M24: 15,411,124 km (0.116 R)
• M25: 16,545,973 km (0.086 R)
• M26: 17,887,866 km (0.076 R)
• M27: 19,300,668 km (0.109 R)
• M28: 23,154,310 km (0.118 R)
• M29: 25,308,519 km (0.083 R)
• M30: 25,405,159 km (0.048 R)
• M31: 27,084,844 km (0.104 R)
• M32: 28,942,401 km (0.107 R)
• M33: 34,901,782 km (0.049 R)
• M34: 35,988,760 km (0.099 R)
• M35: 36,725,679 km (0.116 R)
• M36: 39,125,977 km (0.03 R)

Kuiper Belt

Range: 30 - 55 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 476 - 11,124 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit