🌌 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: 4.77

Radius: 1.87

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.101

Orbit Range: 0.58 AU - 0.72 AU

Year: 333 Days

Day: 34.8 Hours

Environment

Temp: -129 °C

Axial Tilt: 16.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.83 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 564.4

Radius: 9.2

Gravity: 6.67 G

Time & Orbit

Eccentricity (e): 0.239

Orbit Range: 0.63 AU - 1.03 AU

Year: 481 Days

Day: 6.3 Hours

Environment

Temp: -150 °C

Axial Tilt: 18.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 56,275,276 km

• M1: 114,442 km (0.119 R)
• M2: 607,367 km (0.096 R)
• M3: 914,941 km (0.083 R)
• M4: 1,641,986 km (0.069 R)
• M5: 2,244,417 km (0.082 R)
• M6: 2,582,508 km (0.07 R)
• M7: 2,911,773 km (0.065 R)
• M8: 3,327,356 km (0.095 R)
• M9: 3,667,841 km (0.092 R)
• M10: 4,376,635 km (0.049 R)
• M11: 4,846,971 km (0.104 R)
• M12: 5,237,721 km (0.072 R)
• M13: 5,615,605 km (0.112 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.89 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 105.4

Radius: 9.4

Gravity: 1.19 G

Time & Orbit

Eccentricity (e): 0.155

Orbit Range: 0.75 AU - 1.03 AU

Year: 534 Days

Day: 6.8 Hours

Environment

Temp: -145 °C

Axial Tilt: 20.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 56,275,276 km

• M1: 116,986 km (0.097 R)
• M2: 494,720 km (0.029 R)
• M3: 815,308 km (0.076 R)
• M4: 1,205,759 km (0.073 R)
• M5: 1,664,127 km (0.107 R)
• M6: 1,990,100 km (0.074 R)
• M7: 2,906,537 km (0.085 R)
• M8: 3,225,629 km (0.113 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.6 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 173.3

Radius: 13.8

Gravity: 0.91 G

Time & Orbit

Eccentricity (e): 0.101

Orbit Range: 1.44 AU - 1.76 AU

Year: 1287 Days

Day: 6.8 Hours

Environment

Temp: -171 °C

Axial Tilt: 5.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 56,275,276 km

• M1: 171,589 km (0.037 R)
• M2: 633,697 km (0.043 R)
• M3: 1,071,420 km (0.092 R)
• M4: 2,189,664 km (0.062 R)
• M5: 2,708,021 km (0.088 R)
• M6: 3,245,675 km (0.108 R)
• M7: 3,910,937 km (0.118 R)
• M8: 4,367,959 km (0.051 R)
• M9: 5,146,915 km (0.117 R)
• M10: 6,467,116 km (0.091 R)
• M11: 6,897,958 km (0.045 R)
• M12: 7,502,632 km (0.071 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.96 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 161.1

Radius: 11.2

Gravity: 1.28 G

Time & Orbit

Eccentricity (e): 0.022

Orbit Range: 3.87 AU - 4.05 AU

Year: 5010 Days

Day: 8.1 Hours

Environment

Temp: -221 °C

Axial Tilt: 15.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 56,275,276 km

• M1: 139,276 km (0.096 R)
• M2: 550,371 km (0.083 R)
• M3: 920,027 km (0.052 R)
• M4: 1,388,268 km (0.048 R)
• M5: 2,789,402 km (0.08 R)
• M6: 3,410,083 km (0.076 R)
• M7: 4,972,932 km (0.073 R)
• M8: 6,603,100 km (0.082 R)
• M9: 8,111,945 km (0.055 R)
• M10: 14,424,077 km (0.117 R)
• M11: 15,723,335 km (0.117 R)
• M12: 17,843,436 km (0.119 R)

Planet 6 - Gas Giant

Semi-Major Axis: 5.82 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 181.7

Radius: 13.7

Gravity: 0.97 G

Time & Orbit

Eccentricity (e): 0.155

Orbit Range: 4.92 AU - 6.72 AU

Year: 8927 Days

Day: 7.3 Hours

Environment

Temp: -217 °C

Axial Tilt: 0 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 56,275,276 km

• M1: 211,382 km (0.088 R)
• M2: 657,782 km (0.083 R)
• M3: 1,450,950 km (0.057 R)
• M4: 2,654,764 km (0.064 R)
• M5: 3,212,315 km (0.098 R)
• M6: 4,996,419 km (0.051 R)
• M7: 7,857,778 km (0.089 R)
• M8: 8,860,981 km (0.101 R)
• M9: 10,329,135 km (0.069 R)
• M10: 12,240,696 km (0.114 R)
• M11: 15,592,287 km (0.091 R)
• M12: 16,399,816 km (0.073 R)
• M13: 18,035,669 km (0.047 R)
• M14: 18,668,318 km (0.109 R)
• M15: 19,911,327 km (0.06 R)
• M16: 20,519,143 km (0.099 R)
• M17: 21,348,663 km (0.076 R)
• M18: 23,148,475 km (0.065 R)
• M19: 24,047,559 km (0.038 R)
• M20: 25,047,620 km (0.091 R)

Planet 7 - Ice Giant

Semi-Major Axis: 7.14 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 858.2

Radius: 7.9

Gravity: 13.75 G

Time & Orbit

Eccentricity (e): 0.182

Orbit Range: 5.84 AU - 8.44 AU

Year: 12131 Days

Day: 24.5 Hours

Environment

Temp: -219 °C

Axial Tilt: 36.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 56,275,276 km

• M1: 99,931 km (0.087 R)
• M2: 469,737 km (0.106 R)
• M3: 940,223 km (0.036 R)
• M4: 1,442,273 km (0.096 R)
• M5: 2,424,832 km (0.118 R)
• M6: 3,578,830 km (0.031 R)
• M7: 5,959,830 km (0.075 R)
• M8: 6,875,369 km (0.091 R)
• M9: 7,565,613 km (0.109 R)
• M10: 12,583,126 km (0.101 R)
• M11: 13,813,419 km (0.115 R)
• M12: 16,212,071 km (0.107 R)
• M13: 17,509,832 km (0.107 R)
• M14: 18,547,892 km (0.099 R)
• M15: 20,483,988 km (0.115 R)
• M16: 21,635,891 km (0.104 R)
• M17: 22,365,929 km (0.074 R)
• M18: 22,830,430 km (0.052 R)
• M19: 23,112,273 km (0.099 R)
• M20: 24,556,341 km (0.042 R)
• M21: 26,264,449 km (0.045 R)
• M22: 27,622,948 km (0.101 R)
• M23: 28,590,547 km (0.083 R)
• M24: 47,752,837 km (0.1 R)

Planet 8 - Ice Giant

Semi-Major Axis: 9.59 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 310.9

Radius: 5.8

Gravity: 9.24 G

Time & Orbit

Eccentricity (e): 0.131

Orbit Range: 8.33 AU - 10.85 AU

Year: 18883 Days

Day: 24.5 Hours

Environment

Temp: -228 °C

Axial Tilt: 28.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (32)

Outer Limit: 56,275,276 km

• M1: 72,106 km (0.112 R)
• M2: 277,354 km (0.084 R)
• M3: 482,453 km (0.092 R)
• M4: 678,726 km (0.092 R)
• M5: 1,292,675 km (0.048 R)
• M6: 1,746,406 km (0.109 R)
• M7: 1,948,512 km (0.109 R)
• M8: 2,166,177 km (0.089 R)
• M9: 4,002,641 km (0.058 R)
• M10: 4,859,687 km (0.071 R)
• M11: 5,471,692 km (0.12 R)
• M12: 5,870,071 km (0.089 R)
• M13: 6,724,873 km (0.083 R)
• M14: 6,971,859 km (0.086 R)
• M15: 7,883,957 km (0.075 R)
• M16: 11,615,078 km (0.099 R)
• M17: 12,704,150 km (0.119 R)
• M18: 13,145,464 km (0.087 R)
• M19: 13,793,672 km (0.108 R)
• M20: 15,364,898 km (0.102 R)
• M21: 15,793,646 km (0.113 R)
• M22: 18,295,520 km (0.07 R)
• M23: 20,187,784 km (0.112 R)
• M24: 21,313,209 km (0.057 R)
• M25: 25,431,937 km (0.05 R)
• M26: 25,830,765 km (0.103 R)
• M27: 30,385,422 km (0.115 R)
• M28: 39,294,274 km (0.08 R)
• M29: 41,455,365 km (0.076 R)
• M30: 43,694,247 km (0.107 R)
• M31: 47,201,868 km (0.086 R)
• M32: 54,937,125 km (0.109 R)

Kuiper Belt

Range: 30 - 52 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 253 - 19,411 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit