🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.28 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.56 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.01

Radius: 1.74

Gravity: 1.32 G

Time & Orbit

Eccentricity (e): 0.143

Orbit Range: 0.48 AU - 0.64 AU

Year: 275 Days

Day: 38.6 Hours

Environment

Temp: -122 °C

Axial Tilt: 5.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 37,049,860 km

• M1: 494,122 km (0.049 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.69 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 998.1

Radius: 15

Gravity: 4.44 G

Time & Orbit

Eccentricity (e): 0.03

Orbit Range: 0.67 AU - 0.71 AU

Year: 376 Days

Day: 10.8 Hours

Environment

Temp: -146 °C

Axial Tilt: 27.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 37,049,860 km

• M1: 186,698 km (0.049 R)
• M2: 656,585 km (0.099 R)
• M3: 1,159,533 km (0.117 R)
• M4: 1,721,871 km (0.086 R)
• M5: 2,284,808 km (0.029 R)
• M6: 2,781,922 km (0.07 R)
• M7: 3,628,646 km (0.109 R)
• M8: 4,270,870 km (0.086 R)
• M9: 5,019,308 km (0.039 R)
• M10: 5,616,054 km (0.058 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.77 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 631.9

Radius: 10.5

Gravity: 5.73 G

Time & Orbit

Eccentricity (e): 0.05

Orbit Range: 0.73 AU - 0.81 AU

Year: 443 Days

Day: 14.1 Hours

Environment

Temp: -137 °C

Axial Tilt: 32.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 37,049,860 km

• M1: 130,599 km (0.083 R)
• M2: 575,353 km (0.08 R)
• M3: 971,638 km (0.084 R)
• M4: 1,919,191 km (0.113 R)
• M5: 2,427,076 km (0.051 R)
• M6: 3,088,897 km (0.104 R)
• M7: 3,444,940 km (0.045 R)
• M8: 3,790,062 km (0.083 R)
• M9: 5,524,500 km (0.067 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.88 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 812.3

Radius: 9.1

Gravity: 9.81 G

Time & Orbit

Eccentricity (e): 0.019

Orbit Range: 0.86 AU - 0.9 AU

Year: 542 Days

Day: 10.7 Hours

Environment

Temp: -161 °C

Axial Tilt: 34.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 37,049,860 km

• M1: 113,246 km (0.096 R)
• M2: 475,272 km (0.067 R)
• M3: 760,256 km (0.093 R)
• M4: 1,207,853 km (0.113 R)
• M5: 1,588,879 km (0.101 R)
• M6: 2,596,869 km (0.078 R)
• M7: 2,928,678 km (0.12 R)
• M8: 3,402,454 km (0.051 R)
• M9: 3,842,571 km (0.072 R)
• M10: 4,305,128 km (0.116 R)
• M11: 4,902,472 km (0.072 R)
• M12: 5,359,643 km (0.075 R)
• M13: 6,050,935 km (0.089 R)
• M14: 6,903,643 km (0.09 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.26 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 144.3

Radius: 12.3

Gravity: 0.95 G

Time & Orbit

Eccentricity (e): 0.13

Orbit Range: 2.84 AU - 3.68 AU

Year: 3861 Days

Day: 7.7 Hours

Environment

Temp: -199 °C

Axial Tilt: 38 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 37,049,860 km

• M1: 153,338 km (0.047 R)
• M2: 634,445 km (0.095 R)
• M3: 2,306,949 km (0.106 R)
• M4: 3,551,005 km (0.069 R)
• M5: 5,376,398 km (0.082 R)
• M6: 7,962,496 km (0.113 R)
• M7: 9,411,800 km (0.038 R)
• M8: 9,909,363 km (0.1 R)
• M9: 11,696,609 km (0.067 R)
• M10: 12,706,544 km (0.075 R)
• M11: 13,110,159 km (0.098 R)
• M12: 13,689,701 km (0.084 R)
• M13: 14,503,364 km (0.06 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.75 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 177.1

Radius: 13.7

Gravity: 0.94 G

Time & Orbit

Eccentricity (e): 0.006

Orbit Range: 4.72 AU - 4.78 AU

Year: 6791 Days

Day: 10.9 Hours

Environment

Temp: -218 °C

Axial Tilt: 34.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 37,049,860 km

• M1: 170,841 km (0.103 R)
• M2: 668,254 km (0.095 R)
• M3: 1,183,170 km (0.083 R)
• M4: 2,019,571 km (0.106 R)
• M5: 2,480,034 km (0.082 R)
• M6: 3,151,130 km (0.109 R)
• M7: 4,003,837 km (0.098 R)
• M8: 5,408,711 km (0.051 R)
• M9: 6,054,974 km (0.069 R)
• M10: 7,764,877 km (0.117 R)
• M11: 8,876,240 km (0.062 R)
• M12: 9,661,629 km (0.114 R)
• M13: 14,003,258 km (0.06 R)
• M14: 16,571,255 km (0.04 R)
• M15: 17,704,609 km (0.107 R)
• M16: 18,647,973 km (0.114 R)
• M17: 21,087,765 km (0.051 R)

Planet 7 - Ice Giant

Semi-Major Axis: 6.57 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 259.2

Radius: 4.6

Gravity: 12.25 G

Time & Orbit

Eccentricity (e): 0.119

Orbit Range: 5.79 AU - 7.35 AU

Year: 11047 Days

Day: 23.2 Hours

Environment

Temp: -212 °C

Axial Tilt: 34.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 37,049,860 km

• M1: 57,146 km (0.093 R)
• M2: 310,864 km (0.109 R)
• M3: 467,493 km (0.08 R)
• M4: 649,255 km (0.097 R)
• M5: 1,159,234 km (0.073 R)
• M6: 1,350,719 km (0.095 R)
• M7: 1,670,559 km (0.052 R)
• M8: 2,055,176 km (0.074 R)
• M9: 2,514,591 km (0.095 R)
• M10: 3,317,034 km (0.026 R)
• M11: 4,653,541 km (0.066 R)
• M12: 4,964,256 km (0.111 R)
• M13: 7,089,892 km (0.052 R)
• M14: 7,654,773 km (0.09 R)
• M15: 10,789,447 km (0.118 R)
• M16: 11,133,522 km (0.078 R)
• M17: 16,489,126 km (0.039 R)
• M18: 18,785,154 km (0.047 R)
• M19: 23,668,777 km (0.078 R)
• M20: 25,785,886 km (0.094 R)
• M21: 28,862,964 km (0.047 R)

Kuiper Belt

Range: 30 - 47 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 183 - 16,672 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit