🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.34 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.67 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.26

Radius: 1.6

Gravity: 1.27 G

Time & Orbit

Eccentricity (e): 0.102

Orbit Range: 0.6 AU - 0.74 AU

Year: 360 Days

Day: 25.6 Hours

Environment

Temp: -133 °C

Axial Tilt: 8.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 40,891,517 km

• M1: 729,439 km (0.085 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.75 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 543.4

Radius: 11.9

Gravity: 3.84 G

Time & Orbit

Eccentricity (e): 0.021

Orbit Range: 0.73 AU - 0.77 AU

Year: 426 Days

Day: 8.9 Hours

Environment

Temp: -147 °C

Axial Tilt: 5.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 40,891,517 km

• M1: 147,952 km (0.074 R)
• M2: 555,008 km (0.101 R)
• M3: 981,661 km (0.073 R)
• M4: 1,408,913 km (0.119 R)
• M5: 1,915,451 km (0.093 R)
• M6: 2,422,887 km (0.087 R)
• M7: 2,843,706 km (0.043 R)
• M8: 3,279,784 km (0.089 R)
• M9: 3,687,288 km (0.111 R)
• M10: 4,221,203 km (0.078 R)
• M11: 5,088,272 km (0.101 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.82 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 536.8

Radius: 14.1

Gravity: 2.7 G

Time & Orbit

Eccentricity (e): 0.047

Orbit Range: 0.78 AU - 0.86 AU

Year: 487 Days

Day: 7.3 Hours

Environment

Temp: -146 °C

Axial Tilt: 25.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 40,891,517 km

• M1: 175,329 km (0.117 R)
• M2: 614,398 km (0.105 R)
• M3: 1,111,363 km (0.096 R)
• M4: 1,653,505 km (0.065 R)
• M5: 2,327,743 km (0.115 R)
• M6: 2,878,861 km (0.12 R)
• M7: 3,421,752 km (0.083 R)
• M8: 4,470,732 km (0.1 R)
• M9: 5,394,798 km (0.104 R)

Planet 4 - Gas Giant

Semi-Major Axis: 4.35 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 978.6

Radius: 9.6

Gravity: 10.62 G

Time & Orbit

Eccentricity (e): 0.087

Orbit Range: 3.97 AU - 4.73 AU

Year: 5952 Days

Day: 10.3 Hours

Environment

Temp: -215 °C

Axial Tilt: 16.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 40,891,517 km

• M1: 120,426 km (0.067 R)
• M2: 812,017 km (0.114 R)
• M3: 1,710,352 km (0.086 R)
• M4: 2,667,629 km (0.104 R)
• M5: 3,682,651 km (0.06 R)
• M6: 5,535,420 km (0.107 R)
• M7: 6,950,766 km (0.107 R)
• M8: 7,510,561 km (0.105 R)
• M9: 9,371,259 km (0.059 R)
• M10: 9,777,418 km (0.116 R)
• M11: 10,528,399 km (0.078 R)
• M12: 12,628,304 km (0.078 R)
• M13: 13,292,369 km (0.069 R)
• M14: 14,630,073 km (0.12 R)
• M15: 18,893,313 km (0.1 R)
• M16: 19,688,576 km (0.084 R)
• M17: 23,586,647 km (0.054 R)
• M18: 24,678,712 km (0.063 R)
• M19: 26,513,380 km (0.091 R)
• M20: 31,645,485 km (0.069 R)
• M21: 36,398,808 km (0.089 R)
• M22: 38,083,280 km (0.092 R)

Planet 5 - Ice Giant

Semi-Major Axis: 10.3 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 177.6

Radius: 7.2

Gravity: 3.43 G

Time & Orbit

Eccentricity (e): 0.103

Orbit Range: 9.24 AU - 11.36 AU

Year: 21685 Days

Day: 17.2 Hours

Environment

Temp: -225 °C

Axial Tilt: 23.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 40,891,517 km

• M1: 92,152 km (0.115 R)
• M2: 462,706 km (0.102 R)
• M3: 1,248,095 km (0.103 R)
• M4: 2,474,498 km (0.042 R)
• M5: 3,931,133 km (0.108 R)
• M6: 4,968,444 km (0.114 R)
• M7: 7,528,662 km (0.054 R)
• M8: 9,211,638 km (0.092 R)
• M9: 9,506,346 km (0.119 R)
• M10: 10,481,575 km (0.056 R)
• M11: 11,806,713 km (0.058 R)
• M12: 14,322,949 km (0.092 R)
• M13: 16,447,687 km (0.114 R)
• M14: 20,138,865 km (0.113 R)
• M15: 25,484,296 km (0.046 R)
• M16: 28,792,653 km (0.104 R)
• M17: 40,415,361 km (0.106 R)
• M18: 46,025,131 km (0.037 R)

Planet 6 - Ice Giant

Semi-Major Axis: 10.43 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 87.1

Radius: 5.3

Gravity: 3.1 G

Time & Orbit

Eccentricity (e): 0.064

Orbit Range: 9.76 AU - 11.1 AU

Year: 22097 Days

Day: 20.7 Hours

Environment

Temp: -231 °C

Axial Tilt: 20 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 40,891,517 km

• M1: 67,469 km (0.115 R)
• M2: 494,720 km (0.108 R)
• M3: 1,212,940 km (0.115 R)
• M4: 1,656,348 km (0.114 R)
• M5: 1,939,088 km (0.11 R)
• M6: 2,270,896 km (0.086 R)
• M7: 2,562,911 km (0.078 R)
• M8: 2,859,115 km (0.111 R)
• M9: 3,380,313 km (0.044 R)
• M10: 4,091,801 km (0.065 R)
• M11: 4,694,680 km (0.099 R)
• M12: 6,352,674 km (0.113 R)
• M13: 6,711,110 km (0.101 R)
• M14: 7,990,321 km (0.112 R)
• M15: 8,579,139 km (0.073 R)
• M16: 10,420,688 km (0.106 R)
• M17: 11,910,085 km (0.115 R)
• M18: 18,487,155 km (0.078 R)
• M19: 18,776,926 km (0.081 R)
• M20: 22,575,815 km (0.118 R)
• M21: 26,214,932 km (0.118 R)
• M22: 27,792,741 km (0.099 R)
• M23: 27,982,431 km (0.059 R)
• M24: 28,460,397 km (0.071 R)
• M25: 30,326,630 km (0.105 R)
• M26: 31,034,228 km (0.048 R)
• M27: 35,624,339 km (0.103 R)

Kuiper Belt

Range: 30 - 58 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 355 - 11,345 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit