🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.3 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.59 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.45

Radius: 1.82

Gravity: 1.34 G

Time & Orbit

Eccentricity (e): 0.243

Orbit Range: 0.45 AU - 0.73 AU

Year: 288 Days

Day: 16.6 Hours

Environment

Temp: -135 °C

Axial Tilt: 65.4 °

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: 1.63

Radius: 1.22

Gravity: 1.1 G

Time & Orbit

Eccentricity (e): 0.061

Orbit Range: 0.57 AU - 0.65 AU

Year: 303 Days

Day: 41.8 Hours

Environment

Temp: -137 °C

Axial Tilt: 29.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Terrestrial

Semi-Major Axis: 0.65 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.21

Radius: 0.54

Gravity: 0.72 G

Time & Orbit

Eccentricity (e): 0.018

Orbit Range: 0.64 AU - 0.66 AU

Year: 333 Days

Day: 16.7 Hours

Environment

Temp: -125 °C

Axial Tilt: 19.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Gas Giant

Semi-Major Axis: 1.07 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 893.8

Radius: 9.3

Gravity: 10.33 G

Time & Orbit

Eccentricity (e): 0.154

Orbit Range: 0.91 AU - 1.23 AU

Year: 704 Days

Day: 9 Hours

Environment

Temp: -168 °C

Axial Tilt: 31 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 54,295,977 km

• M1: 115,639 km (0.08 R)
• M2: 412,591 km (0.107 R)
• M3: 709,842 km (0.115 R)
• M4: 1,305,391 km (0.069 R)
• M5: 1,817,315 km (0.064 R)
• M6: 2,236,339 km (0.1 R)
• M7: 3,229,818 km (0.042 R)
• M8: 3,686,690 km (0.058 R)
• M9: 4,107,509 km (0.111 R)
• M10: 5,172,646 km (0.109 R)
• M11: 5,546,640 km (0.111 R)
• M12: 6,100,601 km (0.105 R)
• M13: 6,669,223 km (0.101 R)
• M14: 7,158,258 km (0.096 R)
• M15: 8,158,469 km (0.119 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.2 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 689.4

Radius: 9.9

Gravity: 7.03 G

Time & Orbit

Eccentricity (e): 0.044

Orbit Range: 1.15 AU - 1.25 AU

Year: 836 Days

Day: 8.1 Hours

Environment

Temp: -174 °C

Axial Tilt: 2.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 54,295,977 km

• M1: 123,269 km (0.026 R)
• M2: 482,304 km (0.102 R)
• M3: 848,370 km (0.117 R)
• M4: 1,189,004 km (0.11 R)
• M5: 1,510,340 km (0.027 R)
• M6: 1,946,119 km (0.052 R)
• M7: 2,622,600 km (0.07 R)
• M8: 2,959,195 km (0.087 R)
• M9: 3,434,618 km (0.112 R)
• M10: 3,899,418 km (0.061 R)
• M11: 4,323,827 km (0.099 R)
• M12: 4,973,381 km (0.053 R)
• M13: 5,284,545 km (0.062 R)
• M14: 6,171,511 km (0.118 R)
• M15: 6,531,293 km (0.114 R)
• M16: 6,882,699 km (0.078 R)
• M17: 8,623,719 km (0.088 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.63 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 291.3

Radius: 13

Gravity: 1.72 G

Time & Orbit

Eccentricity (e): 0.209

Orbit Range: 3.66 AU - 5.6 AU

Year: 6334 Days

Day: 7.4 Hours

Environment

Temp: -223 °C

Axial Tilt: 83.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 54,295,977 km

• M1: 162,014 km (0.072 R)
• M2: 779,854 km (0.109 R)
• M3: 1,256,173 km (0.062 R)
• M4: 1,753,437 km (0.119 R)
• M5: 2,161,689 km (0.081 R)
• M6: 2,569,643 km (0.06 R)
• M7: 5,106,972 km (0.114 R)
• M8: 5,727,803 km (0.111 R)
• M9: 6,428,968 km (0.046 R)
• M10: 8,252,267 km (0.044 R)
• M11: 8,994,123 km (0.053 R)
• M12: 11,176,158 km (0.1 R)
• M13: 11,945,390 km (0.089 R)
• M14: 12,605,117 km (0.092 R)
• M15: 14,519,072 km (0.115 R)
• M16: 17,803,343 km (0.119 R)
• M17: 18,979,033 km (0.049 R)
• M18: 21,691,691 km (0.086 R)
• M19: 23,321,710 km (0.109 R)
• M20: 23,833,634 km (0.068 R)
• M21: 25,646,161 km (0.094 R)
• M22: 26,586,085 km (0.068 R)

Planet 7 - Ice Giant

Semi-Major Axis: 7.94 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 492

Radius: 6.5

Gravity: 11.64 G

Time & Orbit

Eccentricity (e): 0.009

Orbit Range: 7.87 AU - 8.01 AU

Year: 14225 Days

Day: 17 Hours

Environment

Temp: -235 °C

Axial Tilt: 3.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (32)

Outer Limit: 54,295,977 km

• M1: 84,822 km (0.047 R)
• M2: 376,388 km (0.119 R)
• M3: 642,523 km (0.104 R)
• M4: 917,783 km (0.116 R)
• M5: 1,309,580 km (0.052 R)
• M6: 1,711,699 km (0.103 R)
• M7: 1,941,930 km (0.119 R)
• M8: 2,345,994 km (0.096 R)
• M9: 2,917,009 km (0.099 R)
• M10: 4,762,299 km (0.12 R)
• M11: 9,100,936 km (0.106 R)
• M12: 11,046,456 km (0.073 R)
• M13: 13,508,538 km (0.065 R)
• M14: 13,831,819 km (0.07 R)
• M15: 14,561,109 km (0.118 R)
• M16: 19,484,973 km (0.086 R)
• M17: 20,655,726 km (0.118 R)
• M18: 24,352,738 km (0.097 R)
• M19: 28,893,034 km (0.116 R)
• M20: 29,973,280 km (0.1 R)
• M21: 30,192,590 km (0.106 R)
• M22: 31,530,743 km (0.069 R)
• M23: 32,791,554 km (0.087 R)
• M24: 33,258,299 km (0.119 R)
• M25: 34,805,889 km (0.088 R)
• M26: 36,775,645 km (0.1 R)
• M27: 37,915,580 km (0.112 R)
• M28: 42,159,971 km (0.112 R)
• M29: 42,711,838 km (0.046 R)
• M30: 45,978,906 km (0.063 R)
• M31: 47,747,751 km (0.083 R)
• M32: 50,485,392 km (0.111 R)

Kuiper Belt

Range: 30 - 46 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 519 - 14,297 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit