🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.31 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.61 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.42

Radius: 0.71

Gravity: 0.83 G

Time & Orbit

Eccentricity (e): 0.25

Orbit Range: 0.46 AU - 0.76 AU

Year: 313 Days

Day: 38.8 Hours

Environment

Temp: -134 °C

Axial Tilt: 20.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.61 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.19

Radius: 1.37

Gravity: 1.17 G

Time & Orbit

Eccentricity (e): 0.03

Orbit Range: 0.59 AU - 0.63 AU

Year: 313 Days

Day: 39.5 Hours

Environment

Temp: -126 °C

Axial Tilt: 41.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.92 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 745.7

Radius: 14.9

Gravity: 3.36 G

Time & Orbit

Eccentricity (e): 0.139

Orbit Range: 0.79 AU - 1.05 AU

Year: 579 Days

Day: 5.7 Hours

Environment

Temp: -146 °C

Axial Tilt: 36.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 38,050,333 km

• M1: 185,352 km (0.083 R)
• M2: 663,167 km (0.101 R)
• M3: 1,475,783 km (0.113 R)
• M4: 3,041,624 km (0.108 R)
• M5: 3,585,861 km (0.083 R)
• M6: 4,388,304 km (0.112 R)
• M7: 5,695,939 km (0.062 R)
• M8: 6,470,407 km (0.106 R)

Planet 4 - Gas Giant

Semi-Major Axis: 3.3 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 678.7

Radius: 11

Gravity: 5.61 G

Time & Orbit

Eccentricity (e): 0.179

Orbit Range: 2.71 AU - 3.89 AU

Year: 3933 Days

Day: 14.9 Hours

Environment

Temp: -207 °C

Axial Tilt: 46.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 38,050,333 km

• M1: 137,181 km (0.116 R)
• M2: 511,924 km (0.102 R)
• M3: 934,239 km (0.089 R)
• M4: 1,287,888 km (0.109 R)
• M5: 1,721,124 km (0.091 R)
• M6: 2,222,426 km (0.03 R)
• M7: 2,993,753 km (0.059 R)
• M8: 3,913,630 km (0.081 R)
• M9: 4,812,115 km (0.09 R)
• M10: 5,270,782 km (0.032 R)
• M11: 6,607,738 km (0.103 R)
• M12: 7,078,822 km (0.028 R)
• M13: 8,481,601 km (0.116 R)
• M14: 8,887,759 km (0.096 R)
• M15: 13,004,393 km (0.081 R)
• M16: 18,922,335 km (0.088 R)
• M17: 21,395,188 km (0.065 R)
• M18: 22,638,496 km (0.118 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.47 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 292.5

Radius: 8.5

Gravity: 4.05 G

Time & Orbit

Eccentricity (e): 0.097

Orbit Range: 3.13 AU - 3.81 AU

Year: 4240 Days

Day: 5.3 Hours

Environment

Temp: -201 °C

Axial Tilt: 1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 38,050,333 km

• M1: 105,766 km (0.086 R)
• M2: 909,256 km (0.058 R)
• M3: 1,482,216 km (0.098 R)
• M4: 1,762,413 km (0.12 R)
• M5: 2,389,377 km (0.095 R)
• M6: 3,722,444 km (0.109 R)
• M7: 4,461,457 km (0.085 R)
• M8: 6,591,432 km (0.062 R)
• M9: 7,267,913 km (0.08 R)
• M10: 7,544,969 km (0.088 R)
• M11: 9,037,507 km (0.111 R)
• M12: 13,041,643 km (0.102 R)
• M13: 13,964,213 km (0.081 R)
• M14: 16,355,086 km (0.119 R)

Planet 6 - Gas Giant

Semi-Major Axis: 5.88 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 92.9

Radius: 13.9

Gravity: 0.48 G

Time & Orbit

Eccentricity (e): 0.215

Orbit Range: 4.62 AU - 7.14 AU

Year: 9354 Days

Day: 10.2 Hours

Environment

Temp: -225 °C

Axial Tilt: 16.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 38,050,333 km

• M1: 173,384 km (0.095 R)
• M2: 1,218,923 km (0.096 R)
• M3: 2,791,047 km (0.112 R)
• M4: 4,213,274 km (0.105 R)
• M5: 5,772,234 km (0.074 R)
• M6: 6,833,780 km (0.099 R)
• M7: 7,299,778 km (0.066 R)
• M8: 8,089,804 km (0.039 R)
• M9: 9,494,528 km (0.095 R)
• M10: 11,656,816 km (0.087 R)
• M11: 13,111,505 km (0.12 R)
• M12: 18,319,905 km (0.068 R)
• M13: 18,858,308 km (0.061 R)
• M14: 21,577,997 km (0.069 R)

Planet 7 - Ice Giant

Semi-Major Axis: 8.02 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 736.7

Radius: 8

Gravity: 11.51 G

Time & Orbit

Eccentricity (e): 0.188

Orbit Range: 6.51 AU - 9.53 AU

Year: 14899 Days

Day: 19.4 Hours

Environment

Temp: -218 °C

Axial Tilt: 3.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 38,050,333 km

• M1: 101,278 km (0.118 R)
• M2: 2,336,120 km (0.096 R)
• M3: 2,680,644 km (0.073 R)
• M4: 3,609,348 km (0.038 R)
• M5: 4,071,605 km (0.076 R)
• M6: 5,437,583 km (0.058 R)
• M7: 6,204,572 km (0.078 R)
• M8: 10,568,342 km (0.082 R)
• M9: 11,034,489 km (0.096 R)
• M10: 13,505,397 km (0.105 R)
• M11: 13,915,893 km (0.101 R)
• M12: 17,910,156 km (0.086 R)
• M13: 19,251,600 km (0.103 R)
• M14: 20,390,040 km (0.12 R)
• M15: 20,749,075 km (0.051 R)
• M16: 21,295,706 km (0.114 R)
• M17: 22,322,545 km (0.09 R)
• M18: 31,397,601 km (0.094 R)
• M19: 37,876,236 km (0.096 R)
• M20: 38,555,710 km (0.087 R)
• M21: 40,784,568 km (0.09 R)
• M22: 50,233,469 km (0.116 R)
• M23: 54,595,444 km (0.075 R)
• M24: 61,414,863 km (0.116 R)

Planet 8 - Ice Giant

Semi-Major Axis: 9.36 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 97.1

Radius: 6.7

Gravity: 2.16 G

Time & Orbit

Eccentricity (e): 0.182

Orbit Range: 7.66 AU - 11.06 AU

Year: 18786 Days

Day: 22.1 Hours

Environment

Temp: -239 °C

Axial Tilt: 28.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 38,050,333 km

• M1: 84,822 km (0.119 R)
• M2: 410,347 km (0.077 R)
• M3: 1,628,822 km (0.035 R)
• M4: 1,944,772 km (0.068 R)
• M5: 2,423,186 km (0.074 R)
• M6: 3,060,024 km (0.11 R)
• M7: 3,273,650 km (0.118 R)
• M8: 3,876,081 km (0.087 R)
• M9: 4,972,932 km (0.098 R)
• M10: 5,299,505 km (0.089 R)
• M11: 5,832,223 km (0.063 R)
• M12: 6,469,210 km (0.084 R)
• M13: 13,218,019 km (0.1 R)
• M14: 15,656,315 km (0.045 R)
• M15: 18,731,598 km (0.065 R)
• M16: 20,485,633 km (0.062 R)
• M17: 25,693,135 km (0.097 R)
• M18: 31,718,937 km (0.098 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: 316 - 10,480 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit