🌌 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: 0.57 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.44

Radius: 1.43

Gravity: 1.19 G

Time & Orbit

Eccentricity (e): 0.147

Orbit Range: 0.49 AU - 0.65 AU

Year: 282 Days

Day: 46.1 Hours

Environment

Temp: -133 °C

Axial Tilt: 15.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 72,684,064 km

• M1: 459,714 km (0.115 R)
• M2: 516,412 km (0.05 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.62 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.1

Radius: 0.4

Gravity: 0.63 G

Time & Orbit

Eccentricity (e): 0.004

Orbit Range: 0.62 AU - 0.62 AU

Year: 320 Days

Day: 16.1 Hours

Environment

Temp: -127 °C

Axial Tilt: 9.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 72,684,064 km

• M1: 192,832 km (0.077 R)
• M2: 221,554 km (0.098 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.71 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 829.1

Radius: 12.4

Gravity: 5.39 G

Time & Orbit

Eccentricity (e): 0.127

Orbit Range: 0.62 AU - 0.8 AU

Year: 392 Days

Day: 12 Hours

Environment

Temp: -135 °C

Axial Tilt: 143.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 72,684,064 km

• M1: 154,235 km (0.062 R)
• M2: 544,387 km (0.08 R)
• M3: 1,168,509 km (0.103 R)
• M4: 1,556,865 km (0.077 R)
• M5: 2,008,950 km (0.111 R)
• M6: 2,828,447 km (0.104 R)
• M7: 4,056,047 km (0.037 R)
• M8: 4,512,171 km (0.111 R)
• M9: 5,079,895 km (0.097 R)
• M10: 5,611,267 km (0.053 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.8 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 588.1

Radius: 11.7

Gravity: 4.3 G

Time & Orbit

Eccentricity (e): 0.241

Orbit Range: 0.61 AU - 0.99 AU

Year: 469 Days

Day: 7.2 Hours

Environment

Temp: -151 °C

Axial Tilt: 48.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 72,684,064 km

• M1: 145,559 km (0.088 R)
• M2: 526,734 km (0.043 R)
• M3: 917,035 km (0.102 R)
• M4: 1,327,083 km (0.059 R)
• M5: 2,086,741 km (0.074 R)
• M6: 2,964,132 km (0.086 R)
• M7: 3,560,729 km (0.09 R)
• M8: 4,099,580 km (0.027 R)
• M9: 4,604,473 km (0.097 R)
• M10: 5,119,090 km (0.104 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.11 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 607.6

Radius: 8.6

Gravity: 8.22 G

Time & Orbit

Eccentricity (e): 0.153

Orbit Range: 0.94 AU - 1.28 AU

Year: 767 Days

Day: 11.9 Hours

Environment

Temp: -170 °C

Axial Tilt: 47.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 72,684,064 km

• M1: 107,860 km (0.084 R)
• M2: 407,355 km (0.109 R)
• M3: 676,781 km (0.075 R)
• M4: 1,037,611 km (0.077 R)
• M5: 1,428,360 km (0.099 R)
• M6: 1,951,803 km (0.056 R)
• M7: 2,238,583 km (0.05 R)
• M8: 2,687,825 km (0.101 R)
• M9: 3,032,349 km (0.11 R)
• M10: 3,352,937 km (0.062 R)
• M11: 3,639,567 km (0.029 R)
• M12: 3,987,232 km (0.09 R)
• M13: 5,024,244 km (0.112 R)
• M14: 5,873,960 km (0.07 R)
• M15: 6,211,154 km (0.113 R)
• M16: 6,645,586 km (0.113 R)
• M17: 7,233,805 km (0.096 R)
• M18: 7,552,149 km (0.114 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.4 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 996.6

Radius: 10.5

Gravity: 9.04 G

Time & Orbit

Eccentricity (e): 0.015

Orbit Range: 1.38 AU - 1.42 AU

Year: 1087 Days

Day: 7.9 Hours

Environment

Temp: -182 °C

Axial Tilt: 29.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 72,684,064 km

• M1: 131,796 km (0.059 R)
• M2: 641,924 km (0.1 R)
• M3: 1,376,899 km (0.12 R)
• M4: 2,747,514 km (0.095 R)
• M5: 3,353,685 km (0.035 R)
• M6: 4,150,743 km (0.089 R)
• M7: 5,069,573 km (0.084 R)
• M8: 5,587,929 km (0.112 R)
• M9: 6,853,378 km (0.084 R)
• M10: 7,619,618 km (0.08 R)
• M11: 9,879,144 km (0.061 R)

Planet 7 - Gas Giant

Semi-Major Axis: 1.93 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 672.7

Radius: 14.9

Gravity: 3.03 G

Time & Orbit

Eccentricity (e): 0.108

Orbit Range: 1.72 AU - 2.14 AU

Year: 1759 Days

Day: 13.7 Hours

Environment

Temp: -197 °C

Axial Tilt: 15.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 72,684,064 km

• M1: 186,698 km (0.101 R)
• M2: 720,912 km (0.072 R)
• M3: 1,188,555 km (0.09 R)
• M4: 3,067,355 km (0.106 R)
• M5: 3,757,151 km (0.069 R)
• M6: 4,260,697 km (0.113 R)
• M7: 5,101,437 km (0.115 R)
• M8: 6,146,827 km (0.075 R)
• M9: 7,977,456 km (0.063 R)
• M10: 8,723,351 km (0.106 R)
• M11: 10,149,168 km (0.086 R)
• M12: 10,953,706 km (0.032 R)
• M13: 12,376,232 km (0.094 R)
• M14: 14,302,005 km (0.083 R)

Planet 8 - Gas Giant

Semi-Major Axis: 2.54 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 267.6

Radius: 12.7

Gravity: 1.66 G

Time & Orbit

Eccentricity (e): 0.107

Orbit Range: 2.27 AU - 2.81 AU

Year: 2656 Days

Day: 10.9 Hours

Environment

Temp: -208 °C

Axial Tilt: 27.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 72,684,064 km

• M1: 157,975 km (0.08 R)
• M2: 556,205 km (0.063 R)
• M3: 1,711,998 km (0.043 R)
• M4: 2,740,483 km (0.063 R)
• M5: 3,360,267 km (0.115 R)
• M6: 6,568,394 km (0.114 R)
• M7: 7,137,614 km (0.095 R)
• M8: 12,905,659 km (0.076 R)
• M9: 14,093,615 km (0.073 R)

Planet 9 - Ice Giant

Semi-Major Axis: 8.35 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 953.3

Radius: 7.6

Gravity: 16.5 G

Time & Orbit

Eccentricity (e): 0.159

Orbit Range: 7.02 AU - 9.68 AU

Year: 15828 Days

Day: 21.6 Hours

Environment

Temp: -217 °C

Axial Tilt: 36.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (30)

Outer Limit: 72,684,064 km

• M1: 95,294 km (0.055 R)
• M2: 554,111 km (0.117 R)
• M3: 1,098,048 km (0.074 R)
• M4: 1,507,498 km (0.042 R)
• M5: 1,977,085 km (0.105 R)
• M6: 2,278,076 km (0.071 R)
• M7: 2,848,044 km (0.059 R)
• M8: 3,397,218 km (0.116 R)
• M9: 4,204,747 km (0.063 R)
• M10: 4,881,079 km (0.118 R)
• M11: 5,987,505 km (0.101 R)
• M12: 9,332,514 km (0.087 R)
• M13: 9,667,014 km (0.098 R)
• M14: 10,009,594 km (0.083 R)
• M15: 11,148,033 km (0.097 R)
• M16: 19,212,705 km (0.113 R)
• M17: 24,357,974 km (0.105 R)
• M18: 25,099,531 km (0.062 R)
• M19: 32,592,589 km (0.037 R)
• M20: 36,430,373 km (0.112 R)
• M21: 36,705,633 km (0.112 R)
• M22: 43,426,616 km (0.072 R)
• M23: 45,305,865 km (0.054 R)
• M24: 46,265,535 km (0.104 R)
• M25: 55,884,977 km (0.083 R)
• M26: 56,803,658 km (0.091 R)
• M27: 57,545,813 km (0.07 R)
• M28: 61,159,200 km (0.062 R)
• M29: 62,922,510 km (0.049 R)
• M30: 72,249,339 km (0.081 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: 450 - 18,267 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit