🌌 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: 0.66 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.85

Radius: 1.28

Gravity: 1.13 G

Time & Orbit

Eccentricity (e): 0.061

Orbit Range: 0.62 AU - 0.7 AU

Year: 346 Days

Day: 20.6 Hours

Environment

Temp: -142 °C

Axial Tilt: 18 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.67 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.16

Radius: 0.48

Gravity: 0.69 G

Time & Orbit

Eccentricity (e): 0.167

Orbit Range: 0.56 AU - 0.78 AU

Year: 354 Days

Day: 40.5 Hours

Environment

Temp: -131 °C

Axial Tilt: 33.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.7 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 167.8

Radius: 11.5

Gravity: 1.27 G

Time & Orbit

Eccentricity (e): 0.241

Orbit Range: 0.53 AU - 0.87 AU

Year: 378 Days

Day: 11.6 Hours

Environment

Temp: -135 °C

Axial Tilt: 20.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 40,838,655 km

• M1: 143,315 km (0.066 R)
• M2: 542,741 km (0.043 R)
• M3: 1,138,141 km (0.039 R)
• M4: 1,557,912 km (0.05 R)
• M5: 2,013,438 km (0.054 R)
• M6: 2,462,830 km (0.043 R)
• M7: 3,114,628 km (0.074 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.79 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 763.7

Radius: 14.7

Gravity: 3.53 G

Time & Orbit

Eccentricity (e): 0.078

Orbit Range: 0.73 AU - 0.85 AU

Year: 453 Days

Day: 6.5 Hours

Environment

Temp: -152 °C

Axial Tilt: 32.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 40,838,655 km

• M1: 182,809 km (0.051 R)
• M2: 857,196 km (0.048 R)
• M3: 1,411,456 km (0.108 R)
• M4: 1,891,515 km (0.059 R)
• M5: 2,531,046 km (0.036 R)
• M6: 4,127,106 km (0.104 R)
• M7: 4,641,573 km (0.117 R)
• M8: 5,477,526 km (0.109 R)
• M9: 6,083,248 km (0.108 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.01 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 441.9

Radius: 11.2

Gravity: 3.52 G

Time & Orbit

Eccentricity (e): 0.24

Orbit Range: 1.53 AU - 2.49 AU

Year: 1840 Days

Day: 11.5 Hours

Environment

Temp: -183 °C

Axial Tilt: 46.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 40,838,655 km

• M1: 164,558 km (0.101 R)
• M2: 655,837 km (0.037 R)
• M3: 1,080,097 km (0.085 R)
• M4: 1,846,935 km (0.057 R)
• M5: 2,807,354 km (0.119 R)
• M6: 3,746,978 km (0.106 R)
• M7: 4,552,114 km (0.101 R)
• M8: 6,239,727 km (0.105 R)
• M9: 7,530,458 km (0.041 R)
• M10: 12,504,288 km (0.099 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.4 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 350

Radius: 12.1

Gravity: 2.39 G

Time & Orbit

Eccentricity (e): 0.193

Orbit Range: 1.94 AU - 2.86 AU

Year: 2401 Days

Day: 6.1 Hours

Environment

Temp: -193 °C

Axial Tilt: 36.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 40,838,655 km

• M1: 161,117 km (0.043 R)
• M2: 658,081 km (0.086 R)
• M3: 1,123,779 km (0.057 R)
• M4: 1,595,312 km (0.073 R)
• M5: 2,140,147 km (0.11 R)
• M6: 2,696,053 km (0.112 R)
• M7: 3,508,818 km (0.073 R)
• M8: 4,942,714 km (0.104 R)
• M9: 5,944,271 km (0.048 R)
• M10: 6,455,896 km (0.083 R)
• M11: 7,484,381 km (0.081 R)
• M12: 8,437,320 km (0.11 R)
• M13: 8,927,702 km (0.028 R)
• M14: 10,134,957 km (0.106 R)
• M15: 10,549,043 km (0.112 R)
• M16: 11,447,977 km (0.104 R)
• M17: 12,397,475 km (0.091 R)
• M18: 12,991,827 km (0.109 R)
• M19: 13,563,740 km (0.097 R)
• M20: 14,713,998 km (0.115 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.6 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 495.7

Radius: 8.5

Gravity: 6.86 G

Time & Orbit

Eccentricity (e): 0.187

Orbit Range: 2.11 AU - 3.09 AU

Year: 2707 Days

Day: 9.7 Hours

Environment

Temp: -206 °C

Axial Tilt: 7.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 40,838,655 km

• M1: 106,214 km (0.12 R)
• M2: 416,780 km (0.112 R)
• M3: 815,608 km (0.067 R)
• M4: 1,088,025 km (0.095 R)
• M5: 1,529,040 km (0.113 R)
• M6: 1,825,543 km (0.105 R)
• M7: 2,224,820 km (0.075 R)
• M8: 2,681,392 km (0.118 R)
• M9: 3,317,482 km (0.06 R)
• M10: 4,539,547 km (0.061 R)
• M11: 5,229,044 km (0.094 R)
• M12: 6,351,926 km (0.087 R)
• M13: 6,956,002 km (0.034 R)
• M14: 9,761,261 km (0.088 R)
• M15: 12,222,445 km (0.109 R)
• M16: 15,165,484 km (0.075 R)
• M17: 16,698,414 km (0.081 R)
• M18: 18,007,694 km (0.075 R)

Planet 8 - Gas Giant

Semi-Major Axis: 2.61 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 295

Radius: 11.6

Gravity: 2.19 G

Time & Orbit

Eccentricity (e): 0.05

Orbit Range: 2.48 AU - 2.74 AU

Year: 2723 Days

Day: 14 Hours

Environment

Temp: -191 °C

Axial Tilt: 41.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 40,838,655 km

• M1: 145,260 km (0.071 R)
• M2: 651,798 km (0.079 R)
• M3: 1,600,697 km (0.042 R)
• M4: 2,386,535 km (0.089 R)
• M5: 2,803,464 km (0.115 R)
• M6: 3,190,474 km (0.1 R)
• M7: 4,166,899 km (0.104 R)
• M8: 5,310,126 km (0.099 R)
• M9: 5,742,314 km (0.086 R)
• M10: 8,418,022 km (0.071 R)
• M11: 11,050,645 km (0.104 R)
• M12: 11,456,504 km (0.051 R)
• M13: 12,297,843 km (0.119 R)
• M14: 12,854,347 km (0.064 R)
• M15: 14,846,691 km (0.109 R)

Asteroid Belt

Center: 5.23 AU

Composition

Type: Outer System (Icy)

A dense region of planetesimals and debris.

Boundary

Planet 9 - Ice Giant

Semi-Major Axis: 7.85 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 228

Radius: 5.2

Gravity: 8.43 G

Time & Orbit

Eccentricity (e): 0.003

Orbit Range: 7.83 AU - 7.87 AU

Year: 14201 Days

Day: 17.7 Hours

Environment

Temp: -235 °C

Axial Tilt: 22.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 40,838,655 km

• M1: 64,626 km (0.057 R)
• M2: 452,683 km (0.083 R)
• M3: 1,654,253 km (0.116 R)
• M4: 2,274,486 km (0.086 R)
• M5: 2,726,421 km (0.108 R)
• M6: 3,490,268 km (0.102 R)
• M7: 5,922,879 km (0.047 R)
• M8: 6,699,741 km (0.054 R)
• M9: 6,885,541 km (0.026 R)
• M10: 10,642,841 km (0.108 R)
• M11: 15,381,803 km (0.099 R)
• M12: 18,314,819 km (0.119 R)
• M13: 18,825,097 km (0.096 R)
• M14: 21,119,928 km (0.087 R)
• M15: 22,416,942 km (0.111 R)
• M16: 25,437,472 km (0.119 R)
• M17: 31,851,182 km (0.114 R)
• M18: 32,588,699 km (0.12 R)
• M19: 37,721,253 km (0.1 R)
• M20: 38,191,439 km (0.117 R)
• M21: 41,843,422 km (0.12 R)

Planet 10 - Ice Giant

Semi-Major Axis: 9.2 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 130.5

Radius: 7.4

Gravity: 2.38 G

Time & Orbit

Eccentricity (e): 0.18

Orbit Range: 7.54 AU - 10.86 AU

Year: 18018 Days

Day: 16.1 Hours

Environment

Temp: -228 °C

Axial Tilt: 21.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 40,838,655 km

• M1: 107,860 km (0.088 R)
• M2: 491,429 km (0.098 R)
• M3: 1,248,095 km (0.034 R)
• M4: 2,509,055 km (0.04 R)
• M5: 3,242,085 km (0.056 R)
• M6: 3,610,545 km (0.101 R)
• M7: 4,974,428 km (0.115 R)
• M8: 7,717,754 km (0.115 R)
• M9: 8,042,232 km (0.077 R)
• M10: 8,849,312 km (0.119 R)
• M11: 9,431,996 km (0.111 R)
• M12: 10,377,903 km (0.047 R)
• M13: 10,823,705 km (0.067 R)
• M14: 15,237,291 km (0.119 R)
• M15: 19,652,373 km (0.088 R)
• M16: 22,805,896 km (0.116 R)
• M17: 23,728,915 km (0.1 R)
• M18: 25,918,878 km (0.117 R)
• M19: 28,720,398 km (0.065 R)
• M20: 31,924,485 km (0.082 R)
• M21: 33,719,958 km (0.074 R)
• M22: 39,628,476 km (0.11 R)

Kuiper Belt

Range: 30 - 56 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 535 - 19,427 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit