🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.33 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.65 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.78

Radius: 1.51

Gravity: 1.22 G

Time & Orbit

Eccentricity (e): 0.108

Orbit Range: 0.58 AU - 0.72 AU

Year: 338 Days

Day: 25.5 Hours

Environment

Temp: -143 °C

Axial Tilt: 47.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 1.13 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 505.2

Radius: 13.5

Gravity: 2.77 G

Time & Orbit

Eccentricity (e): 0.244

Orbit Range: 0.85 AU - 1.41 AU

Year: 776 Days

Day: 15 Hours

Environment

Temp: -159 °C

Axial Tilt: 7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 55,514,531 km

• M1: 168,597 km (0.077 R)
• M2: 614,698 km (0.082 R)
• M3: 1,085,931 km (0.117 R)
• M4: 1,587,832 km (0.089 R)
• M5: 2,245,913 km (0.055 R)
• M6: 2,915,064 km (0.085 R)
• M7: 3,742,041 km (0.058 R)
• M8: 4,402,366 km (0.091 R)
• M9: 4,935,234 km (0.098 R)
• M10: 5,474,684 km (0.079 R)
• M11: 6,111,671 km (0.118 R)
• M12: 7,467,327 km (0.065 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.34 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 37.2

Radius: 12.3

Gravity: 0.25 G

Time & Orbit

Eccentricity (e): 0.128

Orbit Range: 1.17 AU - 1.51 AU

Year: 1002 Days

Day: 13.4 Hours

Environment

Temp: -173 °C

Axial Tilt: 19.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 55,514,531 km

• M1: 153,039 km (0.063 R)
• M2: 810,072 km (0.06 R)
• M3: 1,205,160 km (0.112 R)
• M4: 1,986,660 km (0.035 R)
• M5: 2,504,119 km (0.096 R)
• M6: 3,072,591 km (0.092 R)
• M7: 3,650,338 km (0.093 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.63 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 116.6

Radius: 14

Gravity: 0.59 G

Time & Orbit

Eccentricity (e): 0.182

Orbit Range: 1.33 AU - 1.93 AU

Year: 1344 Days

Day: 10.1 Hours

Environment

Temp: -172 °C

Axial Tilt: 28.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 55,514,531 km

• M1: 174,282 km (0.12 R)
• M2: 695,780 km (0.094 R)
• M3: 1,174,343 km (0.092 R)
• M4: 2,048,743 km (0.114 R)
• M5: 2,534,786 km (0.106 R)
• M6: 3,336,930 km (0.063 R)
• M7: 3,948,037 km (0.119 R)
• M8: 4,710,538 km (0.093 R)
• M9: 5,999,772 km (0.086 R)
• M10: 6,687,474 km (0.083 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.71 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 416.3

Radius: 12

Gravity: 2.89 G

Time & Orbit

Eccentricity (e): 0.075

Orbit Range: 1.58 AU - 1.84 AU

Year: 1444 Days

Day: 11.6 Hours

Environment

Temp: -175 °C

Axial Tilt: 10.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 55,514,531 km

• M1: 153,936 km (0.1 R)
• M2: 844,330 km (0.089 R)
• M3: 1,222,364 km (0.085 R)
• M4: 1,611,618 km (0.084 R)
• M5: 1,993,541 km (0.094 R)
• M6: 2,738,838 km (0.051 R)
• M7: 3,318,829 km (0.077 R)
• M8: 3,818,486 km (0.093 R)
• M9: 4,281,341 km (0.111 R)
• M10: 5,104,429 km (0.118 R)
• M11: 5,793,926 km (0.05 R)
• M12: 6,991,756 km (0.101 R)
• M13: 10,749,654 km (0.027 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.44 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 604.9

Radius: 11.4

Gravity: 4.65 G

Time & Orbit

Eccentricity (e): 0.133

Orbit Range: 2.98 AU - 3.9 AU

Year: 4120 Days

Day: 9.3 Hours

Environment

Temp: -213 °C

Axial Tilt: 29 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 55,514,531 km

• M1: 141,968 km (0.088 R)
• M2: 537,356 km (0.093 R)
• M3: 1,051,673 km (0.11 R)
• M4: 1,655,300 km (0.075 R)
• M5: 2,071,631 km (0.044 R)
• M6: 2,737,043 km (0.081 R)
• M7: 3,722,294 km (0.113 R)
• M8: 5,888,621 km (0.062 R)
• M9: 6,593,975 km (0.096 R)
• M10: 7,094,978 km (0.094 R)
• M11: 9,089,267 km (0.105 R)
• M12: 9,910,410 km (0.101 R)
• M13: 10,318,513 km (0.103 R)
• M14: 11,476,849 km (0.117 R)
• M15: 12,018,693 km (0.07 R)
• M16: 13,007,984 km (0.1 R)
• M17: 14,204,019 km (0.117 R)
• M18: 14,776,230 km (0.109 R)
• M19: 16,699,461 km (0.056 R)
• M20: 18,476,384 km (0.105 R)
• M21: 19,857,173 km (0.09 R)
• M22: 21,780,852 km (0.099 R)
• M23: 24,634,132 km (0.073 R)

Planet 7 - Ice Giant

Semi-Major Axis: 7.03 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 782.8

Radius: 5.6

Gravity: 24.96 G

Time & Orbit

Eccentricity (e): 0.029

Orbit Range: 6.83 AU - 7.23 AU

Year: 12035 Days

Day: 15.4 Hours

Environment

Temp: -224 °C

Axial Tilt: 2.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (32)

Outer Limit: 55,514,531 km

• M1: 69,713 km (0.096 R)
• M2: 433,983 km (0.057 R)
• M3: 892,351 km (0.082 R)
• M4: 1,088,175 km (0.056 R)
• M5: 1,436,588 km (0.097 R)
• M6: 2,603,302 km (0.036 R)
• M7: 2,800,921 km (0.1 R)
• M8: 3,128,241 km (0.073 R)
• M9: 3,559,831 km (0.103 R)
• M10: 4,059,039 km (0.111 R)
• M11: 6,814,033 km (0.07 R)
• M12: 8,405,605 km (0.058 R)
• M13: 9,750,939 km (0.118 R)
• M14: 10,068,236 km (0.087 R)
• M15: 11,700,349 km (0.061 R)
• M16: 13,697,331 km (0.106 R)
• M17: 14,230,049 km (0.05 R)
• M18: 17,641,479 km (0.103 R)
• M19: 17,954,886 km (0.058 R)
• M20: 18,998,780 km (0.108 R)
• M21: 20,167,588 km (0.064 R)
• M22: 23,960,792 km (0.106 R)
• M23: 25,522,594 km (0.11 R)
• M24: 27,047,295 km (0.059 R)
• M25: 29,064,622 km (0.074 R)
• M26: 34,237,866 km (0.083 R)
• M27: 34,970,896 km (0.06 R)
• M28: 38,925,665 km (0.079 R)
• M29: 40,805,362 km (0.115 R)
• M30: 44,745,022 km (0.081 R)
• M31: 45,620,918 km (0.028 R)
• M32: 50,172,882 km (0.116 R)

Planet 8 - Ice Giant

Semi-Major Axis: 9.43 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 304.4

Radius: 6.7

Gravity: 6.78 G

Time & Orbit

Eccentricity (e): 0.212

Orbit Range: 7.43 AU - 11.43 AU

Year: 18697 Days

Day: 18.1 Hours

Environment

Temp: -237 °C

Axial Tilt: 8.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (32)

Outer Limit: 55,514,531 km

• M1: 83,476 km (0.116 R)
• M2: 365,318 km (0.099 R)
• M3: 1,013,376 km (0.088 R)
• M4: 1,734,737 km (0.091 R)
• M5: 2,003,863 km (0.089 R)
• M6: 2,419,446 km (0.108 R)
• M7: 2,868,390 km (0.113 R)
• M8: 3,684,446 km (0.096 R)
• M9: 4,429,294 km (0.096 R)
• M10: 6,888,234 km (0.077 R)
• M11: 7,436,361 km (0.077 R)
• M12: 8,058,688 km (0.063 R)
• M13: 8,429,541 km (0.084 R)
• M14: 10,348,732 km (0.08 R)
• M15: 12,480,502 km (0.104 R)
• M16: 13,294,164 km (0.081 R)
• M17: 13,681,324 km (0.075 R)
• M18: 14,546,299 km (0.117 R)
• M19: 15,803,220 km (0.12 R)
• M20: 16,979,957 km (0.037 R)
• M21: 17,978,074 km (0.104 R)
• M22: 19,922,696 km (0.112 R)
• M23: 20,859,179 km (0.115 R)
• M24: 26,287,338 km (0.103 R)
• M25: 29,651,046 km (0.114 R)
• M26: 30,312,119 km (0.12 R)
• M27: 32,703,441 km (0.106 R)
• M28: 33,055,146 km (0.061 R)
• M29: 40,089,985 km (0.056 R)
• M30: 42,130,650 km (0.05 R)
• M31: 43,529,091 km (0.095 R)
• M32: 44,239,681 km (0.119 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: 312 - 17,468 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit