🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.29 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.58 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.26

Radius: 1.6

Gravity: 1.27 G

Time & Orbit

Eccentricity (e): 0.135

Orbit Range: 0.5 AU - 0.66 AU

Year: 281 Days

Day: 16.4 Hours

Environment

Temp: -116 °C

Axial Tilt: 20.3 °

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: 3.84

Radius: 1.71

Gravity: 1.31 G

Time & Orbit

Eccentricity (e): 0.062

Orbit Range: 0.55 AU - 0.63 AU

Year: 288 Days

Day: 41.2 Hours

Environment

Temp: -136 °C

Axial Tilt: 31.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 75,537,463 km

• M1: 213,327 km (0.106 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.9 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 316

Radius: 13.8

Gravity: 1.66 G

Time & Orbit

Eccentricity (e): 0.073

Orbit Range: 0.83 AU - 0.97 AU

Year: 543 Days

Day: 7.9 Hours

Environment

Temp: -160 °C

Axial Tilt: 135.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 75,537,463 km

• M1: 171,738 km (0.043 R)
• M2: 722,259 km (0.105 R)
• M3: 1,281,455 km (0.069 R)
• M4: 1,737,878 km (0.107 R)
• M5: 2,544,959 km (0.086 R)
• M6: 3,035,939 km (0.089 R)
• M7: 3,733,364 km (0.032 R)
• M8: 4,172,883 km (0.103 R)
• M9: 4,618,984 km (0.101 R)

Planet 4 - Gas Giant

Semi-Major Axis: 3.35 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 546.5

Radius: 10.8

Gravity: 4.69 G

Time & Orbit

Eccentricity (e): 0.029

Orbit Range: 3.25 AU - 3.45 AU

Year: 3899 Days

Day: 10 Hours

Environment

Temp: -201 °C

Axial Tilt: 35.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 75,537,463 km

• M1: 135,835 km (0.08 R)
• M2: 525,537 km (0.114 R)
• M3: 936,632 km (0.094 R)
• M4: 1,398,291 km (0.105 R)
• M5: 1,945,221 km (0.107 R)
• M6: 2,283,911 km (0.08 R)
• M7: 2,808,999 km (0.065 R)
• M8: 3,869,648 km (0.099 R)
• M9: 5,515,225 km (0.11 R)
• M10: 7,197,752 km (0.033 R)
• M11: 7,951,576 km (0.032 R)
• M12: 9,311,420 km (0.087 R)
• M13: 10,571,932 km (0.103 R)
• M14: 14,367,529 km (0.032 R)
• M15: 15,244,023 km (0.111 R)
• M16: 18,384,232 km (0.07 R)
• M17: 18,744,464 km (0.072 R)
• M18: 19,293,637 km (0.089 R)

Planet 5 - Gas Giant

Semi-Major Axis: 4.09 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 23.7

Radius: 13.7

Gravity: 0.13 G

Time & Orbit

Eccentricity (e): 0.226

Orbit Range: 3.17 AU - 5.01 AU

Year: 5259 Days

Day: 9.2 Hours

Environment

Temp: -213 °C

Axial Tilt: 35.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 75,537,463 km

• M1: 637,287 km (0.076 R)
• M2: 1,421,180 km (0.117 R)
• M3: 2,781,174 km (0.065 R)
• M4: 4,208,637 km (0.068 R)
• M5: 5,370,713 km (0.068 R)
• M6: 6,122,293 km (0.097 R)
• M7: 8,587,815 km (0.116 R)

Planet 6 - Gas Giant

Semi-Major Axis: 5.47 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 774.2

Radius: 9.8

Gravity: 8.06 G

Time & Orbit

Eccentricity (e): 0.193

Orbit Range: 4.41 AU - 6.53 AU

Year: 8134 Days

Day: 14.6 Hours

Environment

Temp: -208 °C

Axial Tilt: 14.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 75,537,463 km

• M1: 121,922 km (0.089 R)
• M2: 656,735 km (0.08 R)
• M3: 1,352,814 km (0.055 R)
• M4: 1,998,029 km (0.103 R)
• M5: 2,715,351 km (0.073 R)
• M6: 3,046,860 km (0.107 R)
• M7: 3,717,806 km (0.099 R)
• M8: 8,199,010 km (0.107 R)
• M9: 15,389,133 km (0.117 R)
• M10: 17,278,554 km (0.112 R)
• M11: 21,839,195 km (0.087 R)
• M12: 26,298,558 km (0.096 R)
• M13: 28,396,817 km (0.096 R)
• M14: 30,914,101 km (0.086 R)
• M15: 35,813,281 km (0.117 R)
• M16: 40,087,293 km (0.089 R)

Planet 7 - Ice Giant

Semi-Major Axis: 7.75 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 240.2

Radius: 5.2

Gravity: 8.88 G

Time & Orbit

Eccentricity (e): 0.207

Orbit Range: 6.15 AU - 9.35 AU

Year: 13718 Days

Day: 19.6 Hours

Environment

Temp: -224 °C

Axial Tilt: 16.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 75,537,463 km

• M1: 65,823 km (0.078 R)
• M2: 280,346 km (0.1 R)
• M3: 612,304 km (0.076 R)
• M4: 788,530 km (0.094 R)
• M5: 1,494,932 km (0.113 R)
• M6: 2,613,026 km (0.059 R)
• M7: 3,042,671 km (0.11 R)
• M8: 7,460,446 km (0.075 R)
• M9: 10,582,553 km (0.046 R)
• M10: 11,089,840 km (0.109 R)
• M11: 18,354,911 km (0.096 R)
• M12: 20,763,885 km (0.109 R)
• M13: 29,437,719 km (0.116 R)
• M14: 32,615,178 km (0.039 R)
• M15: 34,561,147 km (0.079 R)
• M16: 37,739,952 km (0.119 R)
• M17: 38,091,807 km (0.03 R)

Planet 8 - Ice Giant

Semi-Major Axis: 8.95 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 925

Radius: 6.5

Gravity: 21.89 G

Time & Orbit

Eccentricity (e): 0.007

Orbit Range: 8.89 AU - 9.01 AU

Year: 17024 Days

Day: 19.5 Hours

Environment

Temp: -220 °C

Axial Tilt: 35.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (37)

Outer Limit: 75,537,463 km

• M1: 80,783 km (0.108 R)
• M2: 378,483 km (0.046 R)
• M3: 582,235 km (0.078 R)
• M4: 841,338 km (0.083 R)
• M5: 1,072,617 km (0.067 R)
• M6: 1,599,351 km (0.065 R)
• M7: 2,647,284 km (0.043 R)
• M8: 3,206,331 km (0.104 R)
• M9: 4,696,027 km (0.097 R)
• M10: 5,205,707 km (0.034 R)
• M11: 8,583,178 km (0.085 R)
• M12: 9,798,661 km (0.112 R)
• M13: 10,149,168 km (0.119 R)
• M14: 10,447,616 km (0.112 R)
• M15: 10,751,898 km (0.047 R)
• M16: 11,378,264 km (0.082 R)
• M17: 12,363,067 km (0.119 R)
• M18: 12,841,481 km (0.091 R)
• M19: 13,690,300 km (0.076 R)
• M20: 14,879,603 km (0.115 R)
• M21: 15,499,387 km (0.111 R)
• M22: 21,284,935 km (0.05 R)
• M23: 31,407,475 km (0.028 R)
• M24: 32,426,086 km (0.072 R)
• M25: 33,598,335 km (0.106 R)
• M26: 33,862,525 km (0.11 R)
• M27: 40,628,837 km (0.065 R)
• M28: 42,605,174 km (0.056 R)
• M29: 46,748,437 km (0.119 R)
• M30: 49,769,267 km (0.111 R)
• M31: 50,112,744 km (0.119 R)
• M32: 53,995,855 km (0.11 R)
• M33: 61,364,149 km (0.116 R)
• M34: 64,775,429 km (0.07 R)
• M35: 66,216,057 km (0.118 R)
• M36: 71,754,170 km (0.099 R)
• M37: 75,085,565 km (0.082 R)

Kuiper Belt

Range: 30 - 54 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 429 - 17,825 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit