🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.31 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.62 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.75

Radius: 1.5

Gravity: 1.22 G

Time & Orbit

Eccentricity (e): 0.097

Orbit Range: 0.56 AU - 0.68 AU

Year: 320 Days

Day: 30.3 Hours

Environment

Temp: -137 °C

Axial Tilt: 33.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.82 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 221.4

Radius: 14.9

Gravity: 1 G

Time & Orbit

Eccentricity (e): 0.134

Orbit Range: 0.71 AU - 0.93 AU

Year: 487 Days

Day: 6.5 Hours

Environment

Temp: -143 °C

Axial Tilt: 22.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 47,236,264 km

• M1: 185,352 km (0.076 R)
• M2: 903,721 km (0.09 R)
• M3: 1,409,960 km (0.09 R)
• M4: 2,059,215 km (0.092 R)
• M5: 2,588,043 km (0.058 R)
• M6: 3,088,149 km (0.101 R)
• M7: 3,697,910 km (0.107 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.34 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 116.3

Radius: 8.3

Gravity: 1.69 G

Time & Orbit

Eccentricity (e): 0.092

Orbit Range: 1.22 AU - 1.46 AU

Year: 1018 Days

Day: 13.8 Hours

Environment

Temp: -177 °C

Axial Tilt: 44.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 47,236,264 km

• M1: 103,372 km (0.118 R)
• M2: 381,774 km (0.103 R)
• M3: 696,827 km (0.114 R)
• M4: 992,881 km (0.109 R)
• M5: 1,649,167 km (0.098 R)
• M6: 1,994,140 km (0.093 R)
• M7: 2,558,273 km (0.076 R)
• M8: 3,213,063 km (0.105 R)
• M9: 3,482,938 km (0.076 R)
• M10: 3,844,665 km (0.106 R)
• M11: 4,149,396 km (0.095 R)
• M12: 4,585,624 km (0.094 R)
• M13: 4,867,765 km (0.093 R)
• M14: 5,599,598 km (0.119 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.5 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 262.6

Radius: 14.1

Gravity: 1.32 G

Time & Orbit

Eccentricity (e): 0.061

Orbit Range: 2.35 AU - 2.65 AU

Year: 2593 Days

Day: 10.3 Hours

Environment

Temp: -204 °C

Axial Tilt: 39 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 47,236,264 km

• M1: 175,478 km (0.076 R)
• M2: 633,547 km (0.09 R)
• M3: 1,892,114 km (0.078 R)
• M4: 2,765,167 km (0.085 R)
• M5: 3,540,533 km (0.038 R)
• M6: 4,951,390 km (0.107 R)
• M7: 6,362,697 km (0.101 R)
• M8: 6,811,490 km (0.115 R)
• M9: 7,885,753 km (0.114 R)
• M10: 8,404,708 km (0.087 R)
• M11: 9,132,202 km (0.117 R)
• M12: 10,234,439 km (0.07 R)
• M13: 10,818,020 km (0.103 R)
• M14: 11,351,187 km (0.077 R)
• M15: 13,867,872 km (0.055 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.94 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 660

Radius: 9.6

Gravity: 7.16 G

Time & Orbit

Eccentricity (e): 0.067

Orbit Range: 2.74 AU - 3.14 AU

Year: 3307 Days

Day: 8.4 Hours

Environment

Temp: -207 °C

Axial Tilt: 28.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 47,236,264 km

• M1: 119,379 km (0.103 R)
• M2: 438,621 km (0.088 R)
• M3: 752,028 km (0.083 R)
• M4: 1,414,597 km (0.066 R)
• M5: 1,860,399 km (0.094 R)
• M6: 2,369,181 km (0.083 R)
• M7: 2,834,281 km (0.059 R)
• M8: 3,213,362 km (0.056 R)
• M9: 3,626,252 km (0.108 R)
• M10: 4,721,159 km (0.107 R)
• M11: 5,057,156 km (0.111 R)
• M12: 6,162,385 km (0.059 R)
• M13: 7,045,461 km (0.102 R)
• M14: 8,420,415 km (0.109 R)
• M15: 9,544,344 km (0.094 R)
• M16: 10,765,362 km (0.109 R)
• M17: 12,673,184 km (0.093 R)
• M18: 16,756,607 km (0.116 R)
• M19: 18,884,188 km (0.107 R)
• M20: 20,482,940 km (0.095 R)
• M21: 21,904,719 km (0.081 R)
• M22: 22,572,224 km (0.098 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.21 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 636.8

Radius: 9.2

Gravity: 7.52 G

Time & Orbit

Eccentricity (e): 0.148

Orbit Range: 2.73 AU - 3.69 AU

Year: 3773 Days

Day: 12.8 Hours

Environment

Temp: -208 °C

Axial Tilt: 34.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 47,236,264 km

• M1: 121,025 km (0.112 R)
• M2: 512,822 km (0.043 R)
• M3: 1,670,410 km (0.104 R)
• M4: 2,496,190 km (0.062 R)
• M5: 3,985,287 km (0.097 R)
• M6: 6,790,995 km (0.098 R)
• M7: 7,624,555 km (0.113 R)
• M8: 11,256,641 km (0.106 R)
• M9: 11,651,430 km (0.082 R)
• M10: 13,178,525 km (0.087 R)
• M11: 17,837,452 km (0.118 R)
• M12: 18,738,480 km (0.041 R)
• M13: 19,480,784 km (0.113 R)
• M14: 20,307,013 km (0.066 R)
• M15: 21,825,881 km (0.051 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.72 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 704.2

Radius: 12.6

Gravity: 4.44 G

Time & Orbit

Eccentricity (e): 0.004

Orbit Range: 3.71 AU - 3.73 AU

Year: 4707 Days

Day: 6.2 Hours

Environment

Temp: -219 °C

Axial Tilt: 44.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 47,236,264 km

• M1: 156,629 km (0.072 R)
• M2: 729,738 km (0.104 R)
• M3: 1,203,066 km (0.08 R)
• M4: 1,844,243 km (0.025 R)
• M5: 3,645,401 km (0.096 R)
• M6: 6,289,693 km (0.113 R)
• M7: 10,143,184 km (0.116 R)
• M8: 13,294,015 km (0.089 R)
• M9: 15,802,322 km (0.067 R)
• M10: 17,974,035 km (0.072 R)
• M11: 18,418,340 km (0.095 R)
• M12: 22,387,621 km (0.072 R)
• M13: 23,050,938 km (0.112 R)
• M14: 26,158,235 km (0.09 R)
• M15: 26,811,678 km (0.106 R)

Planet 8 - Ice Giant

Semi-Major Axis: 6.22 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 925.1

Radius: 7.1

Gravity: 18.35 G

Time & Orbit

Eccentricity (e): 0.066

Orbit Range: 5.81 AU - 6.63 AU

Year: 10176 Days

Day: 16.3 Hours

Environment

Temp: -229 °C

Axial Tilt: 25.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (32)

Outer Limit: 47,236,264 km

• M1: 89,160 km (0.042 R)
• M2: 328,667 km (0.109 R)
• M3: 828,024 km (0.092 R)
• M4: 1,061,846 km (0.052 R)
• M5: 1,327,083 km (0.097 R)
• M6: 1,577,061 km (0.084 R)
• M7: 2,011,493 km (0.05 R)
• M8: 2,462,381 km (0.106 R)
• M9: 2,843,257 km (0.116 R)
• M10: 4,081,479 km (0.103 R)
• M11: 4,804,186 km (0.117 R)
• M12: 5,573,867 km (0.113 R)
• M13: 6,618,509 km (0.075 R)
• M14: 6,980,386 km (0.117 R)
• M15: 7,743,934 km (0.106 R)
• M16: 10,262,115 km (0.089 R)
• M17: 11,135,318 km (0.07 R)
• M18: 13,406,064 km (0.101 R)
• M19: 13,790,829 km (0.098 R)
• M20: 16,473,867 km (0.107 R)
• M21: 22,216,630 km (0.07 R)
• M22: 22,937,243 km (0.062 R)
• M23: 27,385,685 km (0.078 R)
• M24: 28,005,170 km (0.105 R)
• M25: 29,703,106 km (0.081 R)
• M26: 30,028,930 km (0.11 R)
• M27: 30,909,613 km (0.092 R)
• M28: 32,262,426 km (0.076 R)
• M29: 35,694,202 km (0.052 R)
• M30: 38,583,236 km (0.104 R)
• M31: 42,856,798 km (0.101 R)
• M32: 47,435,390 km (0.116 R)

Planet 9 - Ice Giant

Semi-Major Axis: 6.45 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 567.7

Radius: 6.6

Gravity: 13.03 G

Time & Orbit

Eccentricity (e): 0.19

Orbit Range: 5.22 AU - 7.68 AU

Year: 10746 Days

Day: 19.7 Hours

Environment

Temp: -217 °C

Axial Tilt: 24.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 47,236,264 km

• M1: 82,728 km (0.086 R)
• M2: 293,960 km (0.12 R)
• M3: 531,372 km (0.078 R)
• M4: 827,725 km (0.09 R)
• M5: 1,128,267 km (0.113 R)
• M6: 1,473,240 km (0.095 R)
• M7: 2,375,016 km (0.034 R)
• M8: 2,772,946 km (0.038 R)
• M9: 3,831,201 km (0.106 R)
• M10: 5,167,709 km (0.046 R)
• M11: 6,674,159 km (0.087 R)
• M12: 12,270,317 km (0.026 R)
• M13: 14,778,474 km (0.084 R)
• M14: 17,755,771 km (0.078 R)
• M15: 18,501,367 km (0.066 R)
• M16: 26,656,246 km (0.105 R)
• M17: 38,873,755 km (0.089 R)
• M18: 45,421,055 km (0.101 R)

Kuiper Belt

Range: 30 - 45 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 150 - 18,132 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit