🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.27 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.53 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.35

Radius: 0.66

Gravity: 0.8 G

Time & Orbit

Eccentricity (e): 0.059

Orbit Range: 0.5 AU - 0.56 AU

Year: 249 Days

Day: 43.5 Hours

Environment

Temp: -116 °C

Axial Tilt: 0.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.8 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 171.5

Radius: 8.8

Gravity: 2.21 G

Time & Orbit

Eccentricity (e): 0.05

Orbit Range: 0.76 AU - 0.84 AU

Year: 462 Days

Day: 7.8 Hours

Environment

Temp: -144 °C

Axial Tilt: 43.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 63,468,352 km

• M1: 109,506 km (0.077 R)
• M2: 442,511 km (0.1 R)
• M3: 748,737 km (0.088 R)
• M4: 1,660,088 km (0.102 R)
• M5: 1,952,103 km (0.103 R)
• M6: 2,920,749 km (0.056 R)
• M7: 3,209,473 km (0.049 R)

Planet 3 - Gas Giant

Semi-Major Axis: 2.76 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 427.7

Radius: 11.6

Gravity: 3.18 G

Time & Orbit

Eccentricity (e): 0.148

Orbit Range: 2.35 AU - 3.17 AU

Year: 2961 Days

Day: 10.2 Hours

Environment

Temp: -203 °C

Axial Tilt: 0.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 63,468,352 km

• M1: 144,960 km (0.034 R)
• M2: 536,308 km (0.099 R)
• M3: 924,964 km (0.057 R)
• M4: 1,370,466 km (0.101 R)
• M5: 2,204,025 km (0.118 R)
• M6: 2,653,717 km (0.099 R)
• M7: 3,452,719 km (0.111 R)
• M8: 4,921,620 km (0.075 R)
• M9: 6,023,857 km (0.118 R)
• M10: 7,024,368 km (0.114 R)
• M11: 11,627,794 km (0.079 R)
• M12: 14,901,743 km (0.112 R)
• M13: 15,477,396 km (0.086 R)
• M14: 16,217,606 km (0.103 R)

Planet 4 - Gas Giant

Semi-Major Axis: 3.11 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 719.7

Radius: 14.5

Gravity: 3.42 G

Time & Orbit

Eccentricity (e): 0.242

Orbit Range: 2.36 AU - 3.86 AU

Year: 3541 Days

Day: 10.5 Hours

Environment

Temp: -200 °C

Axial Tilt: 15.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 63,468,352 km

• M1: 180,265 km (0.042 R)
• M2: 1,003,802 km (0.107 R)
• M3: 1,498,372 km (0.093 R)
• M4: 3,584,515 km (0.097 R)
• M5: 4,759,007 km (0.09 R)
• M6: 8,591,705 km (0.107 R)
• M7: 10,030,836 km (0.059 R)
• M8: 10,766,260 km (0.092 R)
• M9: 11,276,239 km (0.091 R)
• M10: 12,809,916 km (0.107 R)
• M11: 13,774,822 km (0.096 R)
• M12: 14,325,941 km (0.091 R)
• M13: 16,343,867 km (0.11 R)
• M14: 16,905,008 km (0.057 R)
• M15: 17,595,402 km (0.062 R)
• M16: 18,424,623 km (0.102 R)
• M17: 20,161,006 km (0.066 R)
• M18: 21,734,327 km (0.101 R)

Planet 5 - Gas Giant

Semi-Major Axis: 4.72 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 591.9

Radius: 10.1

Gravity: 5.8 G

Time & Orbit

Eccentricity (e): 0.024

Orbit Range: 4.61 AU - 4.83 AU

Year: 6621 Days

Day: 9 Hours

Environment

Temp: -220 °C

Axial Tilt: 29.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (28)

Outer Limit: 63,468,352 km

• M1: 125,662 km (0.112 R)
• M2: 529,876 km (0.075 R)
• M3: 876,045 km (0.055 R)
• M4: 1,390,213 km (0.108 R)
• M5: 2,036,775 km (0.103 R)
• M6: 2,404,187 km (0.102 R)
• M7: 2,950,519 km (0.048 R)
• M8: 5,299,505 km (0.119 R)
• M9: 6,226,862 km (0.09 R)
• M10: 6,729,511 km (0.076 R)
• M11: 8,242,394 km (0.112 R)
• M12: 9,269,533 km (0.075 R)
• M13: 9,659,535 km (0.039 R)
• M14: 10,565,499 km (0.107 R)
• M15: 10,895,662 km (0.093 R)
• M16: 12,756,958 km (0.087 R)
• M17: 13,790,829 km (0.029 R)
• M18: 14,414,503 km (0.046 R)
• M19: 16,211,024 km (0.06 R)
• M20: 16,969,934 km (0.092 R)
• M21: 17,818,453 km (0.062 R)
• M22: 20,680,559 km (0.032 R)
• M23: 26,166,313 km (0.118 R)
• M24: 26,946,616 km (0.063 R)
• M25: 30,698,979 km (0.086 R)
• M26: 31,082,698 km (0.116 R)
• M27: 31,957,845 km (0.059 R)
• M28: 34,578,501 km (0.073 R)

Planet 6 - Ice Giant

Semi-Major Axis: 9.52 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 442.1

Radius: 3.4

Gravity: 38.24 G

Time & Orbit

Eccentricity (e): 0.218

Orbit Range: 7.44 AU - 11.6 AU

Year: 18966 Days

Day: 20.4 Hours

Environment

Temp: -239 °C

Axial Tilt: 1.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (26)

Outer Limit: 63,468,352 km

• M1: 56,698 km (0.12 R)
• M2: 243,695 km (0.097 R)
• M3: 755,170 km (0.066 R)
• M4: 952,340 km (0.038 R)
• M5: 2,321,609 km (0.064 R)
• M6: 4,477,913 km (0.095 R)
• M7: 4,775,014 km (0.086 R)
• M8: 11,360,911 km (0.078 R)
• M9: 15,676,361 km (0.087 R)
• M10: 17,541,248 km (0.065 R)
• M11: 18,948,216 km (0.078 R)
• M12: 19,289,897 km (0.12 R)
• M13: 19,548,702 km (0.097 R)
• M14: 23,226,117 km (0.101 R)
• M15: 26,163,022 km (0.104 R)
• M16: 26,800,159 km (0.108 R)
• M17: 27,775,089 km (0.044 R)
• M18: 27,884,744 km (0.118 R)
• M19: 39,131,512 km (0.047 R)
• M20: 42,097,290 km (0.094 R)
• M21: 42,824,784 km (0.073 R)
• M22: 50,731,032 km (0.102 R)
• M23: 53,568,155 km (0.089 R)
• M24: 56,333,173 km (0.088 R)
• M25: 59,191,838 km (0.107 R)
• M26: 63,278,254 km (0.048 R)

Kuiper Belt

Range: 30 - 53 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 361 - 17,576 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit