🌌 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: 1.26

Radius: 1.1

Gravity: 1.04 G

Time & Orbit

Eccentricity (e): 0.072

Orbit Range: 0.53 AU - 0.61 AU

Year: 282 Days

Day: 20.7 Hours

Environment

Temp: -134 °C

Axial Tilt: 13.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 86,246,188 km

• M1: 26,329 km (0.08 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.65 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.05

Radius: 1.75

Gravity: 1.32 G

Time & Orbit

Eccentricity (e): 0.131

Orbit Range: 0.56 AU - 0.74 AU

Year: 344 Days

Day: 22 Hours

Environment

Temp: -137 °C

Axial Tilt: 31.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Terrestrial

Semi-Major Axis: 0.66 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.65

Radius: 1.85

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.149

Orbit Range: 0.56 AU - 0.76 AU

Year: 352 Days

Day: 16.6 Hours

Environment

Temp: -133 °C

Axial Tilt: 7.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Gas Giant

Semi-Major Axis: 0.85 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 447.4

Radius: 8.3

Gravity: 6.49 G

Time & Orbit

Eccentricity (e): 0.139

Orbit Range: 0.73 AU - 0.97 AU

Year: 514 Days

Day: 14.5 Hours

Environment

Temp: -160 °C

Axial Tilt: 4.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 86,246,188 km

• M1: 103,223 km (0.078 R)
• M2: 371,152 km (0.039 R)
• M3: 656,435 km (0.095 R)
• M4: 987,496 km (0.075 R)
• M5: 1,286,691 km (0.116 R)
• M6: 2,081,804 km (0.079 R)
• M7: 2,572,186 km (0.046 R)
• M8: 2,887,239 km (0.088 R)
• M9: 3,250,911 km (0.109 R)
• M10: 4,084,022 km (0.113 R)
• M11: 5,256,720 km (0.05 R)
• M12: 5,515,973 km (0.117 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.13 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 976.8

Radius: 8.7

Gravity: 12.91 G

Time & Orbit

Eccentricity (e): 0.017

Orbit Range: 1.11 AU - 1.15 AU

Year: 788 Days

Day: 11.9 Hours

Environment

Temp: -170 °C

Axial Tilt: 1.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 86,246,188 km

• M1: 108,458 km (0.105 R)
• M2: 383,719 km (0.054 R)
• M3: 694,433 km (0.065 R)
• M4: 1,026,092 km (0.072 R)
• M5: 1,416,991 km (0.083 R)
• M6: 1,722,320 km (0.074 R)
• M7: 2,280,171 km (0.09 R)
• M8: 2,619,608 km (0.088 R)
• M9: 3,084,708 km (0.115 R)
• M10: 3,830,453 km (0.064 R)
• M11: 4,396,831 km (0.113 R)
• M12: 4,962,461 km (0.04 R)
• M13: 5,536,019 km (0.073 R)
• M14: 5,838,954 km (0.105 R)
• M15: 6,152,960 km (0.093 R)
• M16: 6,976,198 km (0.097 R)
• M17: 8,023,083 km (0.083 R)

Asteroid Belt

Center: 2.01 AU

Composition

Type: Outer System (Icy)

A dense region of planetesimals and debris.

Boundary

Planet 6 - Gas Giant

Semi-Major Axis: 2.89 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 376.6

Radius: 13

Gravity: 2.23 G

Time & Orbit

Eccentricity (e): 0.04

Orbit Range: 2.77 AU - 3.01 AU

Year: 3223 Days

Day: 13.1 Hours

Environment

Temp: -200 °C

Axial Tilt: 4.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 86,246,188 km

• M1: 194,926 km (0.111 R)
• M2: 636,240 km (0.098 R)
• M3: 1,709,754 km (0.119 R)
• M4: 2,135,061 km (0.067 R)
• M5: 2,779,229 km (0.1 R)
• M6: 3,340,670 km (0.102 R)
• M7: 3,768,670 km (0.096 R)
• M8: 4,650,250 km (0.11 R)
• M9: 5,566,686 km (0.117 R)
• M10: 6,330,533 km (0.116 R)
• M11: 8,417,573 km (0.085 R)
• M12: 9,885,427 km (0.116 R)
• M13: 10,929,172 km (0.105 R)
• M14: 11,557,782 km (0.093 R)
• M15: 12,715,819 km (0.072 R)
• M16: 13,995,330 km (0.088 R)
• M17: 14,502,466 km (0.062 R)
• M18: 15,898,663 km (0.098 R)
• M19: 16,964,399 km (0.098 R)
• M20: 17,807,831 km (0.1 R)

Planet 7 - Ice Giant

Semi-Major Axis: 6.68 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 217.9

Radius: 4.3

Gravity: 11.78 G

Time & Orbit

Eccentricity (e): 0.25

Orbit Range: 5.01 AU - 8.35 AU

Year: 11326 Days

Day: 19.7 Hours

Environment

Temp: -221 °C

Axial Tilt: 37.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 86,246,188 km

• M1: 61,934 km (0.055 R)
• M2: 312,660 km (0.112 R)
• M3: 447,148 km (0.056 R)
• M4: 1,173,595 km (0.086 R)
• M5: 1,523,954 km (0.051 R)
• M6: 2,224,670 km (0.091 R)
• M7: 2,394,314 km (0.042 R)
• M8: 2,609,136 km (0.101 R)
• M9: 3,554,146 km (0.077 R)
• M10: 5,044,889 km (0.11 R)
• M11: 6,024,306 km (0.078 R)
• M12: 8,310,910 km (0.108 R)
• M13: 8,596,043 km (0.091 R)
• M14: 12,439,661 km (0.12 R)
• M15: 12,866,614 km (0.105 R)
• M16: 14,850,730 km (0.103 R)
• M17: 16,513,959 km (0.073 R)
• M18: 18,641,091 km (0.045 R)
• M19: 20,720,502 km (0.05 R)
• M20: 23,672,367 km (0.082 R)
• M21: 28,332,042 km (0.107 R)
• M22: 29,632,645 km (0.114 R)
• M23: 33,057,539 km (0.067 R)

Planet 8 - Ice Giant

Semi-Major Axis: 6.89 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 709.6

Radius: 5.9

Gravity: 20.38 G

Time & Orbit

Eccentricity (e): 0.047

Orbit Range: 6.57 AU - 7.21 AU

Year: 11864 Days

Day: 21.4 Hours

Environment

Temp: -219 °C

Axial Tilt: 7.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 86,246,188 km

• M1: 79,436 km (0.111 R)
• M2: 312,809 km (0.093 R)
• M3: 501,153 km (0.117 R)
• M4: 777,759 km (0.093 R)
• M5: 1,452,745 km (0.074 R)
• M6: 3,005,122 km (0.04 R)
• M7: 3,268,564 km (0.06 R)
• M8: 4,299,443 km (0.12 R)
• M9: 5,637,297 km (0.084 R)
• M10: 6,420,441 km (0.113 R)
• M11: 7,749,768 km (0.08 R)
• M12: 8,526,031 km (0.057 R)
• M13: 10,884,891 km (0.063 R)
• M14: 12,699,513 km (0.082 R)
• M15: 12,885,164 km (0.116 R)
• M16: 13,135,591 km (0.094 R)
• M17: 16,767,229 km (0.11 R)
• M18: 20,165,195 km (0.102 R)
• M19: 20,502,837 km (0.087 R)
• M20: 26,835,913 km (0.098 R)
• M21: 40,708,722 km (0.086 R)
• M22: 53,705,486 km (0.092 R)

Planet 9 - Ice Giant

Semi-Major Axis: 10.11 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 897.3

Radius: 6.5

Gravity: 21.24 G

Time & Orbit

Eccentricity (e): 0.171

Orbit Range: 8.38 AU - 11.84 AU

Year: 21088 Days

Day: 19.7 Hours

Environment

Temp: -234 °C

Axial Tilt: 18.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (40)

Outer Limit: 86,246,188 km

• M1: 82,279 km (0.116 R)
• M2: 414,237 km (0.079 R)
• M3: 780,602 km (0.088 R)
• M4: 3,743,537 km (0.105 R)
• M5: 4,100,926 km (0.074 R)
• M6: 4,445,301 km (0.051 R)
• M7: 5,231,438 km (0.108 R)
• M8: 6,239,428 km (0.034 R)
• M9: 6,883,896 km (0.103 R)
• M10: 7,776,696 km (0.069 R)
• M11: 9,373,803 km (0.086 R)
• M12: 9,789,834 km (0.106 R)
• M13: 10,094,416 km (0.106 R)
• M14: 10,851,530 km (0.092 R)
• M15: 11,376,768 km (0.117 R)
• M16: 14,573,525 km (0.089 R)
• M17: 16,376,329 km (0.114 R)
• M18: 17,419,924 km (0.036 R)
• M19: 17,687,555 km (0.097 R)
• M20: 21,523,842 km (0.04 R)
• M21: 27,654,962 km (0.119 R)
• M22: 30,402,027 km (0.113 R)
• M23: 31,312,929 km (0.051 R)
• M24: 31,974,600 km (0.115 R)
• M25: 32,241,931 km (0.097 R)
• M26: 33,600,579 km (0.098 R)
• M27: 33,876,887 km (0.05 R)
• M28: 34,714,784 km (0.027 R)
• M29: 37,756,259 km (0.069 R)
• M30: 38,656,838 km (0.104 R)
• M31: 41,286,170 km (0.092 R)
• M32: 48,993,751 km (0.105 R)
• M33: 50,606,117 km (0.05 R)
• M34: 51,884,431 km (0.08 R)
• M35: 53,936,465 km (0.118 R)
• M36: 59,806,686 km (0.088 R)
• M37: 61,854,232 km (0.107 R)
• M38: 67,835,304 km (0.105 R)
• M39: 68,720,026 km (0.11 R)
• M40: 72,335,806 km (0.033 R)

Kuiper Belt

Range: 30 - 47 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 526 - 15,429 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit