🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.3 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.6 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.39

Radius: 0.69

Gravity: 0.82 G

Time & Orbit

Eccentricity (e): 0.231

Orbit Range: 0.46 AU - 0.74 AU

Year: 300 Days

Day: 25 Hours

Environment

Temp: -125 °C

Axial Tilt: 33.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.79 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 400.1

Radius: 12.8

Gravity: 2.44 G

Time & Orbit

Eccentricity (e): 0.062

Orbit Range: 0.74 AU - 0.84 AU

Year: 453 Days

Day: 13.6 Hours

Environment

Temp: -140 °C

Axial Tilt: 29.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 68,317,524 km

• M1: 159,172 km (0.105 R)
• M2: 708,346 km (0.118 R)
• M3: 1,246,599 km (0.064 R)
• M4: 1,925,624 km (0.096 R)
• M5: 2,334,176 km (0.092 R)
• M6: 2,910,277 km (0.102 R)
• M7: 3,309,254 km (0.072 R)
• M8: 4,167,497 km (0.11 R)
• M9: 4,663,414 km (0.066 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.61 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 510.1

Radius: 14.4

Gravity: 2.46 G

Time & Orbit

Eccentricity (e): 0.093

Orbit Range: 1.46 AU - 1.76 AU

Year: 1319 Days

Day: 6.1 Hours

Environment

Temp: -179 °C

Axial Tilt: 22.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 68,317,524 km

• M1: 202,256 km (0.113 R)
• M2: 1,059,901 km (0.057 R)
• M3: 1,692,401 km (0.042 R)
• M4: 2,512,795 km (0.12 R)
• M5: 3,556,091 km (0.073 R)
• M6: 4,815,705 km (0.098 R)
• M7: 6,154,456 km (0.119 R)
• M8: 6,911,122 km (0.052 R)
• M9: 8,309,563 km (0.082 R)
• M10: 8,975,872 km (0.077 R)
• M11: 10,702,381 km (0.11 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.64 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 597.9

Radius: 8.6

Gravity: 8.08 G

Time & Orbit

Eccentricity (e): 0.13

Orbit Range: 1.43 AU - 1.85 AU

Year: 1356 Days

Day: 14.4 Hours

Environment

Temp: -185 °C

Axial Tilt: 20 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 68,317,524 km

• M1: 107,112 km (0.116 R)
• M2: 553,512 km (0.045 R)
• M3: 1,053,169 km (0.05 R)
• M4: 1,327,532 km (0.102 R)
• M5: 1,715,439 km (0.108 R)
• M6: 2,090,032 km (0.094 R)
• M7: 2,568,296 km (0.109 R)
• M8: 2,880,956 km (0.097 R)
• M9: 3,631,189 km (0.072 R)
• M10: 4,217,463 km (0.09 R)
• M11: 4,711,735 km (0.084 R)
• M12: 5,642,383 km (0.114 R)
• M13: 6,265,907 km (0.12 R)
• M14: 7,260,882 km (0.119 R)
• M15: 7,756,201 km (0.079 R)
• M16: 8,301,635 km (0.072 R)
• M17: 8,641,072 km (0.046 R)
• M18: 9,227,496 km (0.115 R)
• M19: 11,214,604 km (0.104 R)
• M20: 11,594,733 km (0.065 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.4 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 448.9

Radius: 14.8

Gravity: 2.05 G

Time & Orbit

Eccentricity (e): 0.042

Orbit Range: 3.26 AU - 3.54 AU

Year: 4048 Days

Day: 11.4 Hours

Environment

Temp: -203 °C

Axial Tilt: 4.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 68,317,524 km

• M1: 184,305 km (0.032 R)
• M2: 800,349 km (0.071 R)
• M3: 1,433,896 km (0.084 R)
• M4: 2,162,138 km (0.032 R)
• M5: 2,891,876 km (0.051 R)
• M6: 3,567,610 km (0.11 R)
• M7: 4,325,323 km (0.084 R)
• M8: 4,920,424 km (0.049 R)
• M9: 6,080,405 km (0.066 R)
• M10: 6,681,191 km (0.07 R)
• M11: 8,619,081 km (0.059 R)
• M12: 10,182,977 km (0.093 R)
• M13: 10,744,269 km (0.062 R)
• M14: 15,271,699 km (0.093 R)
• M15: 16,115,580 km (0.085 R)
• M16: 17,213,928 km (0.103 R)
• M17: 17,838,948 km (0.107 R)
• M18: 20,053,295 km (0.073 R)
• M19: 20,745,634 km (0.088 R)
• M20: 21,519,055 km (0.095 R)
• M21: 22,715,240 km (0.063 R)

Planet 6 - Gas Giant

Semi-Major Axis: 5.35 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 436.4

Radius: 12.5

Gravity: 2.79 G

Time & Orbit

Eccentricity (e): 0.112

Orbit Range: 4.75 AU - 5.95 AU

Year: 7990 Days

Day: 5.2 Hours

Environment

Temp: -219 °C

Axial Tilt: 44.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 68,317,524 km

• M1: 155,432 km (0.119 R)
• M2: 558,150 km (0.085 R)
• M3: 1,314,068 km (0.09 R)
• M4: 1,777,821 km (0.118 R)
• M5: 3,025,916 km (0.063 R)
• M6: 4,818,248 km (0.09 R)
• M7: 8,340,081 km (0.12 R)
• M8: 11,923,100 km (0.116 R)
• M9: 14,195,043 km (0.043 R)
• M10: 16,550,461 km (0.094 R)
• M11: 17,787,785 km (0.062 R)
• M12: 19,085,846 km (0.044 R)
• M13: 20,081,869 km (0.077 R)
• M14: 20,814,449 km (0.089 R)
• M15: 24,005,522 km (0.116 R)
• M16: 28,230,614 km (0.118 R)
• M17: 34,567,580 km (0.095 R)

Planet 7 - Ice Giant

Semi-Major Axis: 7.82 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 994.8

Radius: 6.7

Gravity: 22.16 G

Time & Orbit

Eccentricity (e): 0.182

Orbit Range: 6.4 AU - 9.24 AU

Year: 14120 Days

Day: 18 Hours

Environment

Temp: -228 °C

Axial Tilt: 34.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (40)

Outer Limit: 68,317,524 km

• M1: 89,908 km (0.084 R)
• M2: 384,317 km (0.111 R)
• M3: 752,028 km (0.103 R)
• M4: 1,038,359 km (0.12 R)
• M5: 1,255,126 km (0.099 R)
• M6: 1,471,594 km (0.075 R)
• M7: 1,981,424 km (0.07 R)
• M8: 2,513,244 km (0.069 R)
• M9: 2,812,739 km (0.112 R)
• M10: 3,456,160 km (0.096 R)
• M11: 4,288,522 km (0.116 R)
• M12: 5,211,242 km (0.044 R)
• M13: 7,488,869 km (0.03 R)
• M14: 7,724,187 km (0.088 R)
• M15: 8,160,265 km (0.119 R)
• M16: 8,409,495 km (0.113 R)
• M17: 8,767,034 km (0.057 R)
• M18: 8,975,872 km (0.109 R)
• M19: 9,403,423 km (0.104 R)
• M20: 10,357,259 km (0.086 R)
• M21: 11,373,926 km (0.113 R)
• M22: 12,653,437 km (0.11 R)
• M23: 12,987,788 km (0.103 R)
• M24: 13,259,458 km (0.12 R)
• M25: 18,054,518 km (0.1 R)
• M26: 18,563,899 km (0.084 R)
• M27: 19,700,394 km (0.092 R)
• M28: 23,588,143 km (0.09 R)
• M29: 24,196,857 km (0.053 R)
• M30: 24,505,029 km (0.119 R)
• M31: 27,287,549 km (0.105 R)
• M32: 32,713,763 km (0.097 R)
• M33: 33,597,887 km (0.065 R)
• M34: 35,019,216 km (0.115 R)
• M35: 35,413,706 km (0.11 R)
• M36: 54,967,942 km (0.078 R)
• M37: 58,401,064 km (0.098 R)
• M38: 59,514,222 km (0.025 R)
• M39: 61,400,800 km (0.077 R)
• M40: 67,908,906 km (0.066 R)

Kuiper Belt

Range: 30 - 54 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 553 - 16,060 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit