🌌 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: 0.54 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.39

Radius: 1.14

Gravity: 1.07 G

Time & Orbit

Eccentricity (e): 0.004

Orbit Range: 0.54 AU - 0.54 AU

Year: 256 Days

Day: 29.1 Hours

Environment

Temp: -130 °C

Axial Tilt: 45.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.71 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 476.8

Radius: 9

Gravity: 5.89 G

Time & Orbit

Eccentricity (e): 0.202

Orbit Range: 0.57 AU - 0.85 AU

Year: 386 Days

Day: 11.2 Hours

Environment

Temp: -143 °C

Axial Tilt: 15.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 88,301,650 km

• M1: 115,041 km (0.102 R)
• M2: 426,952 km (0.118 R)
• M3: 759,658 km (0.112 R)
• M4: 1,444,517 km (0.107 R)
• M5: 1,731,595 km (0.097 R)
• M6: 2,136,706 km (0.108 R)
• M7: 2,912,671 km (0.049 R)
• M8: 4,630,204 km (0.066 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.5 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 38.5

Radius: 14.1

Gravity: 0.19 G

Time & Orbit

Eccentricity (e): 0.071

Orbit Range: 1.39 AU - 1.61 AU

Year: 1186 Days

Day: 8.3 Hours

Environment

Temp: -179 °C

Axial Tilt: 16.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 88,301,650 km

• M1: 175,329 km (0.067 R)
• M2: 730,187 km (0.084 R)
• M3: 1,296,565 km (0.076 R)
• M4: 1,790,986 km (0.1 R)
• M5: 2,531,196 km (0.12 R)
• M6: 3,436,712 km (0.105 R)
• M7: 4,306,175 km (0.074 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 782.9

Radius: 10.6

Gravity: 6.97 G

Time & Orbit

Eccentricity (e): 0.011

Orbit Range: 1.98 AU - 2.02 AU

Year: 1826 Days

Day: 7.2 Hours

Environment

Temp: -183 °C

Axial Tilt: 39.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 88,301,650 km

• M1: 131,796 km (0.116 R)
• M2: 471,832 km (0.12 R)
• M3: 916,287 km (0.116 R)
• M4: 1,580,053 km (0.042 R)
• M5: 2,002,667 km (0.088 R)
• M6: 2,342,852 km (0.053 R)
• M7: 3,570,602 km (0.075 R)
• M8: 5,387,917 km (0.074 R)
• M9: 6,203,824 km (0.055 R)
• M10: 6,881,801 km (0.083 R)
• M11: 8,509,426 km (0.088 R)
• M12: 9,313,365 km (0.074 R)
• M13: 10,631,472 km (0.108 R)
• M14: 10,961,036 km (0.116 R)
• M15: 12,030,511 km (0.114 R)
• M16: 13,591,415 km (0.083 R)
• M17: 13,936,538 km (0.098 R)
• M18: 15,144,690 km (0.101 R)

Planet 5 - Gas Giant

Semi-Major Axis: 4.48 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 168.1

Radius: 12.9

Gravity: 1.01 G

Time & Orbit

Eccentricity (e): 0.214

Orbit Range: 3.52 AU - 5.44 AU

Year: 6123 Days

Day: 8.3 Hours

Environment

Temp: -204 °C

Axial Tilt: 37.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 88,301,650 km

• M1: 165,006 km (0.028 R)
• M2: 825,331 km (0.081 R)
• M3: 1,928,317 km (0.087 R)
• M4: 3,430,878 km (0.113 R)
• M5: 3,932,180 km (0.096 R)
• M6: 4,753,323 km (0.084 R)
• M7: 6,279,071 km (0.088 R)
• M8: 9,148,957 km (0.097 R)
• M9: 10,629,527 km (0.11 R)
• M10: 12,264,183 km (0.076 R)
• M11: 15,765,372 km (0.068 R)
• M12: 16,830,209 km (0.108 R)
• M13: 19,822,915 km (0.105 R)

Planet 6 - Gas Giant

Semi-Major Axis: 5.53 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 112.6

Radius: 12.5

Gravity: 0.72 G

Time & Orbit

Eccentricity (e): 0.234

Orbit Range: 4.24 AU - 6.82 AU

Year: 8397 Days

Day: 12.2 Hours

Environment

Temp: -214 °C

Axial Tilt: 49.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 88,301,650 km

• M1: 158,424 km (0.11 R)
• M2: 952,340 km (0.054 R)
• M3: 1,490,593 km (0.034 R)
• M4: 2,414,958 km (0.058 R)
• M5: 2,836,675 km (0.106 R)
• M6: 3,476,355 km (0.085 R)
• M7: 3,913,331 km (0.077 R)
• M8: 4,477,165 km (0.08 R)
• M9: 5,822,948 km (0.077 R)
• M10: 6,678,947 km (0.075 R)
• M11: 7,715,361 km (0.092 R)
• M12: 9,335,356 km (0.108 R)
• M13: 10,753,544 km (0.078 R)
• M14: 14,715,943 km (0.108 R)
• M15: 16,246,478 km (0.112 R)
• M16: 16,742,395 km (0.041 R)
• M17: 21,276,856 km (0.093 R)

Planet 7 - Ice Giant

Semi-Major Axis: 6.88 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 392

Radius: 3.8

Gravity: 27.15 G

Time & Orbit

Eccentricity (e): 0.206

Orbit Range: 5.46 AU - 8.3 AU

Year: 11652 Days

Day: 15.3 Hours

Environment

Temp: -231 °C

Axial Tilt: 39.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 88,301,650 km

• M1: 48,320 km (0.089 R)
• M2: 291,417 km (0.119 R)
• M3: 1,530,536 km (0.102 R)
• M4: 1,999,974 km (0.097 R)
• M5: 2,971,313 km (0.059 R)
• M6: 3,331,844 km (0.111 R)
• M7: 4,530,422 km (0.072 R)
• M8: 6,526,656 km (0.074 R)
• M9: 8,113,590 km (0.114 R)
• M10: 9,989,398 km (0.034 R)
• M11: 10,742,324 km (0.103 R)
• M12: 13,405,166 km (0.106 R)
• M13: 13,645,121 km (0.085 R)
• M14: 16,340,426 km (0.088 R)
• M15: 16,821,533 km (0.118 R)
• M16: 17,740,213 km (0.081 R)
• M17: 23,614,024 km (0.077 R)
• M18: 24,764,132 km (0.087 R)
• M19: 35,111,967 km (0.107 R)

Planet 8 - Ice Giant

Semi-Major Axis: 10.55 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 874.8

Radius: 4

Gravity: 54.68 G

Time & Orbit

Eccentricity (e): 0.107

Orbit Range: 9.42 AU - 11.68 AU

Year: 22126 Days

Day: 19.9 Hours

Environment

Temp: -228 °C

Axial Tilt: 38.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 88,301,650 km

• M1: 49,816 km (0.078 R)
• M2: 291,865 km (0.108 R)
• M3: 664,663 km (0.089 R)
• M4: 867,069 km (0.111 R)
• M5: 2,653,567 km (0.106 R)
• M6: 3,023,672 km (0.083 R)
• M7: 4,483,747 km (0.098 R)
• M8: 4,741,056 km (0.03 R)
• M9: 7,670,332 km (0.044 R)
• M10: 8,528,275 km (0.06 R)
• M11: 9,993,886 km (0.107 R)
• M12: 12,458,660 km (0.069 R)
• M13: 13,040,297 km (0.071 R)
• M14: 18,733,393 km (0.091 R)
• M15: 26,592,667 km (0.086 R)
• M16: 30,320,197 km (0.113 R)
• M17: 35,522,314 km (0.06 R)
• M18: 41,448,484 km (0.11 R)
• M19: 43,396,398 km (0.096 R)
• M20: 44,225,619 km (0.069 R)
• M21: 73,584,500 km (0.074 R)
• M22: 77,642,342 km (0.118 R)
• M23: 79,355,686 km (0.087 R)
• M24: 79,849,808 km (0.111 R)
• M25: 87,773,259 km (0.099 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: 465 - 15,890 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit