🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.28 AU

Composition

Type: Inner (Rocky/Metallic)

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: 3.13

Radius: 1.58

Gravity: 1.25 G

Time & Orbit

Eccentricity (e): 0.131

Orbit Range: 0.49 AU - 0.63 AU

Year: 266 Days

Day: 23.2 Hours

Environment

Temp: -121 °C

Axial Tilt: 13.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.64 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.96

Radius: 1.31

Gravity: 1.14 G

Time & Orbit

Eccentricity (e): 0.125

Orbit Range: 0.56 AU - 0.72 AU

Year: 326 Days

Day: 41.6 Hours

Environment

Temp: -137 °C

Axial Tilt: 2.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.83 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 64.9

Radius: 14.6

Gravity: 0.3 G

Time & Orbit

Eccentricity (e): 0.027

Orbit Range: 0.81 AU - 0.85 AU

Year: 481 Days

Day: 8.5 Hours

Environment

Temp: -140 °C

Axial Tilt: 29.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (3)

Outer Limit: 77,480,431 km

• M1: 181,761 km (0.044 R)
• M2: 839,394 km (0.12 R)
• M3: 1,774,979 km (0.115 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.1 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 535.4

Radius: 14.4

Gravity: 2.58 G

Time & Orbit

Eccentricity (e): 0.172

Orbit Range: 1.74 AU - 2.46 AU

Year: 1935 Days

Day: 5.3 Hours

Environment

Temp: -201 °C

Axial Tilt: 16.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 77,480,431 km

• M1: 179,218 km (0.112 R)
• M2: 679,922 km (0.059 R)
• M3: 1,222,065 km (0.096 R)
• M4: 1,802,954 km (0.065 R)
• M5: 2,451,311 km (0.098 R)
• M6: 3,026,066 km (0.079 R)
• M7: 3,915,275 km (0.106 R)
• M8: 4,767,235 km (0.101 R)
• M9: 5,693,845 km (0.053 R)
• M10: 6,335,021 km (0.087 R)
• M11: 7,291,699 km (0.084 R)
• M12: 8,522,441 km (0.067 R)
• M13: 9,171,845 km (0.103 R)
• M14: 12,415,127 km (0.114 R)
• M15: 14,683,480 km (0.092 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.99 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 382.3

Radius: 14.1

Gravity: 1.92 G

Time & Orbit

Eccentricity (e): 0.056

Orbit Range: 2.82 AU - 3.16 AU

Year: 3287 Days

Day: 5.6 Hours

Environment

Temp: -212 °C

Axial Tilt: 37.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 77,480,431 km

• M1: 226,491 km (0.081 R)
• M2: 907,311 km (0.113 R)
• M3: 1,687,165 km (0.072 R)
• M4: 2,916,410 km (0.09 R)
• M5: 3,358,921 km (0.052 R)
• M6: 3,922,606 km (0.051 R)
• M7: 5,676,491 km (0.081 R)
• M8: 7,097,073 km (0.071 R)
• M9: 8,414,731 km (0.12 R)
• M10: 9,817,510 km (0.061 R)
• M11: 12,822,482 km (0.108 R)
• M12: 17,382,375 km (0.12 R)
• M13: 17,863,781 km (0.077 R)

Planet 6 - Gas Giant

Semi-Major Axis: 5.82 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 565.9

Radius: 12.8

Gravity: 3.45 G

Time & Orbit

Eccentricity (e): 0.006

Orbit Range: 5.79 AU - 5.85 AU

Year: 8927 Days

Day: 9.1 Hours

Environment

Temp: -219 °C

Axial Tilt: 29 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 77,480,431 km

• M1: 159,172 km (0.108 R)
• M2: 589,565 km (0.075 R)
• M3: 1,013,675 km (0.105 R)
• M4: 1,585,139 km (0.072 R)
• M5: 2,456,547 km (0.108 R)
• M6: 2,980,438 km (0.099 R)
• M7: 3,697,760 km (0.103 R)
• M8: 4,176,174 km (0.102 R)
• M9: 5,197,479 km (0.102 R)
• M10: 6,135,906 km (0.1 R)
• M11: 6,957,947 km (0.112 R)
• M12: 10,252,241 km (0.084 R)
• M13: 11,514,548 km (0.078 R)
• M14: 12,156,173 km (0.114 R)
• M15: 12,652,838 km (0.116 R)
• M16: 13,569,574 km (0.077 R)
• M17: 15,216,048 km (0.073 R)
• M18: 17,544,090 km (0.118 R)
• M19: 24,430,080 km (0.119 R)
• M20: 25,580,039 km (0.098 R)
• M21: 32,085,901 km (0.107 R)
• M22: 35,326,640 km (0.095 R)
• M23: 39,376,104 km (0.06 R)
• M24: 40,465,476 km (0.101 R)

Planet 7 - Ice Giant

Semi-Major Axis: 10.87 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 557.2

Radius: 6.2

Gravity: 14.5 G

Time & Orbit

Eccentricity (e): 0.24

Orbit Range: 8.26 AU - 13.48 AU

Year: 22786 Days

Day: 22.8 Hours

Environment

Temp: -232 °C

Axial Tilt: 41.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (35)

Outer Limit: 77,480,431 km

• M1: 77,043 km (0.115 R)
• M2: 284,984 km (0.042 R)
• M3: 559,346 km (0.089 R)
• M4: 804,238 km (0.118 R)
• M5: 1,147,116 km (0.092 R)
• M6: 1,533,977 km (0.077 R)
• M7: 2,024,059 km (0.069 R)
• M8: 2,294,981 km (0.105 R)
• M9: 2,808,550 km (0.106 R)
• M10: 3,748,923 km (0.112 R)
• M11: 4,391,745 km (0.068 R)
• M12: 4,703,955 km (0.076 R)
• M13: 5,372,808 km (0.071 R)
• M14: 6,404,584 km (0.105 R)
• M15: 7,660,458 km (0.084 R)
• M16: 9,239,464 km (0.115 R)
• M17: 15,415,013 km (0.075 R)
• M18: 15,732,909 km (0.108 R)
• M19: 18,081,745 km (0.086 R)
• M20: 18,435,394 km (0.106 R)
• M21: 21,138,329 km (0.073 R)
• M22: 25,837,946 km (0.083 R)
• M23: 30,188,252 km (0.084 R)
• M24: 33,521,592 km (0.108 R)
• M25: 34,055,357 km (0.116 R)
• M26: 37,377,028 km (0.063 R)
• M27: 39,707,613 km (0.075 R)
• M28: 41,365,008 km (0.066 R)
• M29: 45,464,588 km (0.119 R)
• M30: 50,347,612 km (0.105 R)
• M31: 57,640,209 km (0.093 R)
• M32: 62,739,552 km (0.104 R)
• M33: 66,650,639 km (0.06 R)
• M34: 75,181,457 km (0.115 R)
• M35: 76,785,894 km (0.078 R)

Kuiper Belt

Range: 30 - 48 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 345 - 10,779 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit