🌌 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: 0.55 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.19

Radius: 1.77

Gravity: 1.34 G

Time & Orbit

Eccentricity (e): 0.025

Orbit Range: 0.54 AU - 0.56 AU

Year: 268 Days

Day: 40.7 Hours

Environment

Temp: -122 °C

Axial Tilt: 18.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.59 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.49

Radius: 1.82

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.031

Orbit Range: 0.57 AU - 0.61 AU

Year: 297 Days

Day: 17.2 Hours

Environment

Temp: -136 °C

Axial Tilt: 47.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Terrestrial

Semi-Major Axis: 0.62 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.2

Radius: 1.78

Gravity: 1.33 G

Time & Orbit

Eccentricity (e): 0.126

Orbit Range: 0.54 AU - 0.7 AU

Year: 320 Days

Day: 22.5 Hours

Environment

Temp: -137 °C

Axial Tilt: 34.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Gas Giant

Semi-Major Axis: 0.78 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 43.8

Radius: 8.3

Gravity: 0.64 G

Time & Orbit

Eccentricity (e): 0.226

Orbit Range: 0.6 AU - 0.96 AU

Year: 452 Days

Day: 13.5 Hours

Environment

Temp: -149 °C

Axial Tilt: 16.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (3)

Outer Limit: 19,616,706 km

• M1: 104,270 km (0.114 R)
• M2: 375,491 km (0.114 R)
• M3: 1,129,464 km (0.103 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.4 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 128.9

Radius: 9

Gravity: 1.59 G

Time & Orbit

Eccentricity (e): 0.215

Orbit Range: 1.1 AU - 1.7 AU

Year: 1087 Days

Day: 10.1 Hours

Environment

Temp: -177 °C

Axial Tilt: 29.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 19,616,706 km

• M1: 111,899 km (0.095 R)
• M2: 473,477 km (0.106 R)
• M3: 774,468 km (0.111 R)
• M4: 1,063,192 km (0.104 R)
• M5: 1,853,966 km (0.102 R)
• M6: 2,703,533 km (0.104 R)
• M7: 3,511,361 km (0.109 R)
• M8: 3,805,171 km (0.075 R)
• M9: 4,817,799 km (0.108 R)
• M10: 5,117,145 km (0.088 R)
• M11: 5,546,790 km (0.081 R)
• M12: 5,946,964 km (0.105 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.84 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 788.8

Radius: 9.5

Gravity: 8.74 G

Time & Orbit

Eccentricity (e): 0.232

Orbit Range: 1.41 AU - 2.27 AU

Year: 1637 Days

Day: 9.5 Hours

Environment

Temp: -185 °C

Axial Tilt: 41.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 19,616,706 km

• M1: 119,379 km (0.115 R)
• M2: 428,448 km (0.105 R)
• M3: 741,407 km (0.11 R)
• M4: 1,192,145 km (0.094 R)
• M5: 1,598,902 km (0.084 R)
• M6: 2,780,426 km (0.036 R)
• M7: 3,150,980 km (0.119 R)
• M8: 4,177,371 km (0.072 R)
• M9: 4,747,189 km (0.109 R)
• M10: 5,323,440 km (0.084 R)
• M11: 5,874,110 km (0.094 R)
• M12: 6,564,055 km (0.108 R)
• M13: 7,307,258 km (0.076 R)
• M14: 8,434,328 km (0.111 R)
• M15: 9,874,357 km (0.059 R)
• M16: 10,181,033 km (0.034 R)
• M17: 12,949,341 km (0.032 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.87 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 129.3

Radius: 10.4

Gravity: 1.2 G

Time & Orbit

Eccentricity (e): 0.128

Orbit Range: 2.5 AU - 3.24 AU

Year: 3190 Days

Day: 13.5 Hours

Environment

Temp: -200 °C

Axial Tilt: 32.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 19,616,706 km

• M1: 129,552 km (0.106 R)
• M2: 486,343 km (0.092 R)
• M3: 986,000 km (0.12 R)
• M4: 1,374,206 km (0.044 R)
• M5: 1,795,174 km (0.095 R)
• M6: 2,372,772 km (0.072 R)
• M7: 2,778,930 km (0.108 R)
• M8: 6,659,499 km (0.111 R)
• M9: 7,368,593 km (0.09 R)
• M10: 8,071,254 km (0.108 R)
• M11: 8,758,955 km (0.104 R)
• M12: 11,654,572 km (0.12 R)
• M13: 12,125,207 km (0.081 R)
• M14: 12,835,797 km (0.097 R)

Planet 8 - Gas Giant

Semi-Major Axis: 3.22 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 326.8

Radius: 8.6

Gravity: 4.42 G

Time & Orbit

Eccentricity (e): 0.109

Orbit Range: 2.87 AU - 3.57 AU

Year: 3790 Days

Day: 7.9 Hours

Environment

Temp: -206 °C

Axial Tilt: 13.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 19,616,706 km

• M1: 106,962 km (0.108 R)
• M2: 422,913 km (0.111 R)
• M3: 979,866 km (0.116 R)
• M4: 1,981,274 km (0.049 R)
• M5: 2,531,046 km (0.104 R)
• M6: 3,162,050 km (0.077 R)
• M7: 3,701,051 km (0.11 R)
• M8: 4,134,287 km (0.06 R)
• M9: 4,470,284 km (0.08 R)
• M10: 5,366,524 km (0.117 R)
• M11: 7,388,938 km (0.06 R)
• M12: 7,917,019 km (0.108 R)
• M13: 8,272,014 km (0.118 R)
• M14: 9,048,577 km (0.111 R)
• M15: 10,903,441 km (0.06 R)
• M16: 12,088,406 km (0.06 R)
• M17: 13,087,570 km (0.093 R)
• M18: 14,906,081 km (0.119 R)
• M19: 15,749,215 km (0.064 R)
• M20: 16,887,056 km (0.066 R)
• M21: 18,979,931 km (0.057 R)

Kuiper Belt

Range: 30 - 56 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 483 - 15,386 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit