🌌 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: 1.41

Radius: 1.15

Gravity: 1.07 G

Time & Orbit

Eccentricity (e): 0.118

Orbit Range: 0.51 AU - 0.65 AU

Year: 285 Days

Day: 13.1 Hours

Environment

Temp: -125 °C

Axial Tilt: 31.3 °

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: 0.55

Radius: 0.79

Gravity: 0.88 G

Time & Orbit

Eccentricity (e): 0.15

Orbit Range: 0.52 AU - 0.7 AU

Year: 308 Days

Day: 33.7 Hours

Environment

Temp: -127 °C

Axial Tilt: 2.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Terrestrial

Semi-Major Axis: 0.64 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.84

Radius: 1.52

Gravity: 1.23 G

Time & Orbit

Eccentricity (e): 0.025

Orbit Range: 0.62 AU - 0.66 AU

Year: 331 Days

Day: 35 Hours

Environment

Temp: -140 °C

Axial Tilt: 38.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 54,867,814 km

• M1: 37,399 km (0.087 R)
• M2: 81,830 km (0.112 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.72 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 82

Radius: 14.2

Gravity: 0.41 G

Time & Orbit

Eccentricity (e): 0.152

Orbit Range: 0.61 AU - 0.83 AU

Year: 394 Days

Day: 11 Hours

Environment

Temp: -140 °C

Axial Tilt: 7.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (5)

Outer Limit: 54,867,814 km

• M1: 176,675 km (0.093 R)
• M2: 660,923 km (0.085 R)
• M3: 1,287,439 km (0.083 R)
• M4: 1,766,003 km (0.116 R)
• M5: 2,310,390 km (0.099 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.14 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 800.7

Radius: 9.2

Gravity: 9.46 G

Time & Orbit

Eccentricity (e): 0.054

Orbit Range: 1.08 AU - 1.2 AU

Year: 786 Days

Day: 14.8 Hours

Environment

Temp: -175 °C

Axial Tilt: 33.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 54,867,814 km

• M1: 114,442 km (0.096 R)
• M2: 480,359 km (0.106 R)
• M3: 773,122 km (0.073 R)
• M4: 1,244,505 km (0.086 R)
• M5: 2,468,215 km (0.118 R)
• M6: 2,817,377 km (0.032 R)
• M7: 3,416,965 km (0.086 R)
• M8: 4,694,531 km (0.085 R)
• M9: 5,634,903 km (0.111 R)
• M10: 6,478,186 km (0.065 R)
• M11: 7,146,739 km (0.1 R)
• M12: 8,831,959 km (0.104 R)
• M13: 9,264,147 km (0.07 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.14 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 208.1

Radius: 12.5

Gravity: 1.33 G

Time & Orbit

Eccentricity (e): 0.129

Orbit Range: 1.86 AU - 2.42 AU

Year: 2021 Days

Day: 8.4 Hours

Environment

Temp: -186 °C

Axial Tilt: 31.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 54,867,814 km

• M1: 155,432 km (0.067 R)
• M2: 700,866 km (0.036 R)
• M3: 1,152,652 km (0.101 R)
• M4: 1,676,394 km (0.114 R)
• M5: 2,087,489 km (0.1 R)
• M6: 2,801,519 km (0.095 R)
• M7: 3,373,432 km (0.098 R)
• M8: 4,155,230 km (0.112 R)
• M9: 6,057,367 km (0.096 R)
• M10: 8,347,262 km (0.117 R)
• M11: 9,302,444 km (0.119 R)
• M12: 9,806,589 km (0.067 R)
• M13: 10,644,936 km (0.106 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.17 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 404.8

Radius: 12.1

Gravity: 2.76 G

Time & Orbit

Eccentricity (e): 0.022

Orbit Range: 5.06 AU - 5.28 AU

Year: 7590 Days

Day: 7.5 Hours

Environment

Temp: -223 °C

Axial Tilt: 36.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 54,867,814 km

• M1: 150,795 km (0.088 R)
• M2: 1,326,185 km (0.099 R)
• M3: 2,111,724 km (0.109 R)
• M4: 6,096,412 km (0.037 R)
• M5: 8,363,419 km (0.074 R)
• M6: 8,925,907 km (0.114 R)
• M7: 12,586,716 km (0.061 R)
• M8: 13,542,946 km (0.105 R)
• M9: 24,359,320 km (0.067 R)
• M10: 25,675,034 km (0.078 R)
• M11: 26,180,375 km (0.107 R)
• M12: 27,560,715 km (0.037 R)
• M13: 29,445,199 km (0.112 R)
• M14: 31,127,727 km (0.075 R)
• M15: 32,089,790 km (0.089 R)
• M16: 32,479,942 km (0.037 R)

Planet 8 - Ice Giant

Semi-Major Axis: 6.43 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 927

Radius: 7.6

Gravity: 16.05 G

Time & Orbit

Eccentricity (e): 0.044

Orbit Range: 6.15 AU - 6.71 AU

Year: 10528 Days

Day: 21.8 Hours

Environment

Temp: -230 °C

Axial Tilt: 7.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (34)

Outer Limit: 54,867,814 km

• M1: 94,546 km (0.101 R)
• M2: 559,496 km (0.12 R)
• M3: 796,309 km (0.072 R)
• M4: 1,430,455 km (0.038 R)
• M5: 1,679,386 km (0.117 R)
• M6: 2,544,959 km (0.096 R)
• M7: 4,572,010 km (0.072 R)
• M8: 4,921,172 km (0.098 R)
• M9: 5,460,771 km (0.101 R)
• M10: 6,304,653 km (0.106 R)
• M11: 7,148,684 km (0.119 R)
• M12: 7,663,600 km (0.06 R)
• M13: 8,156,973 km (0.117 R)
• M14: 9,257,266 km (0.11 R)
• M15: 10,561,909 km (0.102 R)
• M16: 13,085,475 km (0.045 R)
• M17: 14,385,780 km (0.082 R)
• M18: 15,556,982 km (0.027 R)
• M19: 16,568,263 km (0.068 R)
• M20: 17,545,885 km (0.096 R)
• M21: 17,931,998 km (0.091 R)
• M22: 19,947,978 km (0.09 R)
• M23: 20,623,862 km (0.103 R)
• M24: 21,314,854 km (0.097 R)
• M25: 26,489,295 km (0.097 R)
• M26: 26,997,479 km (0.104 R)
• M27: 34,449,547 km (0.112 R)
• M28: 36,914,322 km (0.119 R)
• M29: 40,828,251 km (0.036 R)
• M30: 42,054,205 km (0.098 R)
• M31: 46,318,194 km (0.101 R)
• M32: 49,162,647 km (0.074 R)
• M33: 52,121,544 km (0.081 R)
• M34: 52,599,359 km (0.088 R)

Kuiper Belt

Range: 30 - 45 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 348 - 16,384 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit