🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.26 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.52 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.06

Radius: 1.75

Gravity: 1.33 G

Time & Orbit

Eccentricity (e): 0.151

Orbit Range: 0.44 AU - 0.6 AU

Year: 242 Days

Day: 19.2 Hours

Environment

Temp: -119 °C

Axial Tilt: 19 °

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: 252.7

Radius: 12.6

Gravity: 1.59 G

Time & Orbit

Eccentricity (e): 0.188

Orbit Range: 0.65 AU - 0.95 AU

Year: 462 Days

Day: 11.2 Hours

Environment

Temp: -140 °C

Axial Tilt: 38 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 61,030,882 km

• M1: 156,629 km (0.109 R)
• M2: 771,027 km (0.097 R)
• M3: 1,577,659 km (0.103 R)
• M4: 2,977,895 km (0.083 R)
• M5: 3,669,037 km (0.092 R)
• M6: 4,187,544 km (0.107 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.02 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 620.4

Radius: 15

Gravity: 2.76 G

Time & Orbit

Eccentricity (e): 0.017

Orbit Range: 1 AU - 1.04 AU

Year: 665 Days

Day: 5.3 Hours

Environment

Temp: -157 °C

Axial Tilt: 15.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 61,030,882 km

• M1: 186,549 km (0.092 R)
• M2: 698,472 km (0.116 R)
• M3: 1,177,485 km (0.054 R)
• M4: 1,973,794 km (0.086 R)
• M5: 2,450,413 km (0.066 R)
• M6: 3,063,764 km (0.065 R)
• M7: 3,537,541 km (0.046 R)
• M8: 4,296,451 km (0.115 R)
• M9: 5,093,957 km (0.038 R)
• M10: 6,007,402 km (0.11 R)
• M11: 7,480,342 km (0.11 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.07 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 574.1

Radius: 8.6

Gravity: 7.76 G

Time & Orbit

Eccentricity (e): 0.132

Orbit Range: 0.93 AU - 1.21 AU

Year: 715 Days

Day: 9.5 Hours

Environment

Temp: -168 °C

Axial Tilt: 12.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 61,030,882 km

• M1: 107,112 km (0.116 R)
• M2: 655,538 km (0.119 R)
• M3: 2,035,429 km (0.064 R)
• M4: 2,478,089 km (0.083 R)
• M5: 2,877,515 km (0.03 R)
• M6: 3,876,978 km (0.053 R)
• M7: 6,025,653 km (0.096 R)
• M8: 7,155,715 km (0.101 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.45 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 373

Radius: 10.4

Gravity: 3.45 G

Time & Orbit

Eccentricity (e): 0.168

Orbit Range: 1.21 AU - 1.69 AU

Year: 1127 Days

Day: 12.3 Hours

Environment

Temp: -167 °C

Axial Tilt: 15.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 61,030,882 km

• M1: 136,882 km (0.082 R)
• M2: 499,058 km (0.056 R)
• M3: 845,378 km (0.032 R)
• M4: 1,913,806 km (0.06 R)
• M5: 2,275,533 km (0.119 R)
• M6: 4,321,134 km (0.12 R)
• M7: 5,167,559 km (0.081 R)
• M8: 6,413,710 km (0.081 R)
• M9: 7,419,456 km (0.113 R)
• M10: 8,578,989 km (0.092 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.78 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 565.7

Radius: 11.4

Gravity: 4.35 G

Time & Orbit

Eccentricity (e): 0.04

Orbit Range: 1.71 AU - 1.85 AU

Year: 1533 Days

Day: 7.1 Hours

Environment

Temp: -192 °C

Axial Tilt: 89.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 61,030,882 km

• M1: 141,819 km (0.037 R)
• M2: 536,308 km (0.101 R)
• M3: 903,422 km (0.055 R)
• M4: 1,295,069 km (0.107 R)
• M5: 1,650,065 km (0.086 R)
• M6: 2,027,949 km (0.029 R)
• M7: 2,464,326 km (0.093 R)
• M8: 3,149,185 km (0.067 R)
• M9: 3,513,306 km (0.084 R)
• M10: 4,644,565 km (0.043 R)
• M11: 5,221,714 km (0.087 R)
• M12: 6,400,096 km (0.108 R)
• M13: 9,124,124 km (0.116 R)
• M14: 11,100,611 km (0.119 R)
• M15: 12,504,886 km (0.052 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.84 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 914.4

Radius: 12.9

Gravity: 5.49 G

Time & Orbit

Eccentricity (e): 0.188

Orbit Range: 2.31 AU - 3.37 AU

Year: 3090 Days

Day: 11.3 Hours

Environment

Temp: -205 °C

Axial Tilt: 38.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 61,030,882 km

• M1: 160,519 km (0.105 R)
• M2: 586,424 km (0.093 R)
• M3: 998,267 km (0.109 R)
• M4: 1,527,993 km (0.059 R)
• M5: 2,146,580 km (0.116 R)
• M6: 2,744,822 km (0.099 R)
• M7: 3,264,974 km (0.094 R)
• M8: 3,809,360 km (0.076 R)
• M9: 4,575,002 km (0.053 R)
• M10: 7,595,981 km (0.082 R)
• M11: 7,998,400 km (0.032 R)
• M12: 9,520,857 km (0.1 R)
• M13: 10,679,792 km (0.067 R)
• M14: 12,475,714 km (0.109 R)
• M15: 16,996,861 km (0.106 R)
• M16: 17,746,347 km (0.087 R)
• M17: 18,278,017 km (0.112 R)
• M18: 23,980,239 km (0.09 R)

Planet 8 - Gas Giant

Semi-Major Axis: 4.49 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 743

Radius: 13.6

Gravity: 4.02 G

Time & Orbit

Eccentricity (e): 0.083

Orbit Range: 4.12 AU - 4.86 AU

Year: 6143 Days

Day: 10.8 Hours

Environment

Temp: -216 °C

Axial Tilt: 10.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 61,030,882 km

• M1: 169,943 km (0.101 R)
• M2: 729,290 km (0.081 R)
• M3: 1,255,276 km (0.117 R)
• M4: 2,190,412 km (0.051 R)
• M5: 3,145,445 km (0.106 R)
• M6: 3,846,610 km (0.096 R)
• M7: 4,543,736 km (0.107 R)
• M8: 5,562,647 km (0.09 R)
• M9: 6,728,763 km (0.103 R)
• M10: 7,935,269 km (0.059 R)
• M11: 8,651,694 km (0.025 R)
• M12: 12,111,294 km (0.108 R)
• M13: 15,717,799 km (0.086 R)
• M14: 16,214,016 km (0.086 R)
• M15: 19,698,898 km (0.101 R)
• M16: 23,014,286 km (0.104 R)
• M17: 23,574,081 km (0.032 R)
• M18: 25,733,227 km (0.081 R)
• M19: 28,936,417 km (0.102 R)
• M20: 30,633,754 km (0.112 R)

Planet 9 - Ice Giant

Semi-Major Axis: 7.87 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 695.8

Radius: 4.7

Gravity: 31.5 G

Time & Orbit

Eccentricity (e): 0.145

Orbit Range: 6.73 AU - 9.01 AU

Year: 14255 Days

Day: 21.7 Hours

Environment

Temp: -232 °C

Axial Tilt: 0.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (38)

Outer Limit: 61,030,882 km

• M1: 58,642 km (0.118 R)
• M2: 281,094 km (0.118 R)
• M3: 483,351 km (0.037 R)
• M4: 922,570 km (0.068 R)
• M5: 1,206,058 km (0.12 R)
• M6: 1,839,904 km (0.107 R)
• M7: 2,740,483 km (0.102 R)
• M8: 4,049,166 km (0.119 R)
• M9: 4,447,993 km (0.079 R)
• M10: 5,216,927 km (0.116 R)
• M11: 5,993,190 km (0.071 R)
• M12: 8,631,648 km (0.096 R)
• M13: 9,135,792 km (0.106 R)
• M14: 9,712,791 km (0.118 R)
• M15: 9,874,357 km (0.082 R)
• M16: 11,172,717 km (0.101 R)
• M17: 11,771,258 km (0.032 R)
• M18: 13,898,091 km (0.118 R)
• M19: 16,572,153 km (0.053 R)
• M20: 17,035,906 km (0.11 R)
• M21: 18,070,226 km (0.114 R)
• M22: 18,893,762 km (0.09 R)
• M23: 22,721,523 km (0.059 R)
• M24: 24,966,837 km (0.106 R)
• M25: 25,168,795 km (0.105 R)
• M26: 25,678,475 km (0.113 R)
• M27: 25,987,544 km (0.081 R)
• M28: 28,330,396 km (0.106 R)
• M29: 34,795,866 km (0.076 R)
• M30: 35,174,349 km (0.062 R)
• M31: 35,683,281 km (0.086 R)
• M32: 36,846,255 km (0.091 R)
• M33: 45,854,141 km (0.056 R)
• M34: 49,419,208 km (0.11 R)
• M35: 53,498,742 km (0.075 R)
• M36: 55,362,881 km (0.119 R)
• M37: 58,150,787 km (0.086 R)
• M38: 59,040,894 km (0.116 R)

Kuiper Belt

Range: 30 - 49 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 517 - 18,354 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit