🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.26 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Gas Giant

Semi-Major Axis: 0.51 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 184.9

Radius: 12.8

Gravity: 1.13 G

Time & Orbit

Eccentricity (e): 0.048

Orbit Range: 0.49 AU - 0.53 AU

Year: 251 Days

Day: 13.8 Hours

Environment

Temp: -147 °C

Axial Tilt: 39.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (5)

Outer Limit: 30,272,576 km

• M1: 159,322 km (0.083 R)
• M2: 657,034 km (0.107 R)
• M3: 1,072,766 km (0.063 R)
• M4: 1,572,722 km (0.118 R)
• M5: 2,195,498 km (0.116 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.99 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 80

Radius: 11.1

Gravity: 0.65 G

Time & Orbit

Eccentricity (e): 0.019

Orbit Range: 0.97 AU - 1.01 AU

Year: 680 Days

Day: 9.2 Hours

Environment

Temp: -184 °C

Axial Tilt: 22.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 30,272,576 km

• M1: 138,079 km (0.104 R)
• M2: 514,168 km (0.118 R)
• M3: 1,022,352 km (0.091 R)
• M4: 1,391,111 km (0.079 R)
• M5: 1,797,269 km (0.117 R)
• M6: 2,252,196 km (0.101 R)
• M7: 2,660,299 km (0.075 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.02 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 662.5

Radius: 10

Gravity: 6.63 G

Time & Orbit

Eccentricity (e): 0.021

Orbit Range: 1 AU - 1.04 AU

Year: 711 Days

Day: 13.4 Hours

Environment

Temp: -183 °C

Axial Tilt: 49.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 30,272,576 km

• M1: 125,064 km (0.102 R)
• M2: 464,950 km (0.064 R)
• M3: 1,143,975 km (0.073 R)
• M4: 1,569,282 km (0.063 R)
• M5: 2,070,883 km (0.056 R)
• M6: 2,417,202 km (0.116 R)
• M7: 3,003,925 km (0.11 R)
• M8: 4,705,302 km (0.106 R)
• M9: 5,381,783 km (0.055 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.59 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 87.4

Radius: 14.5

Gravity: 0.42 G

Time & Orbit

Eccentricity (e): 0.159

Orbit Range: 1.34 AU - 1.84 AU

Year: 1384 Days

Day: 13.3 Hours

Environment

Temp: -183 °C

Axial Tilt: 27.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 30,272,576 km

• M1: 180,265 km (0.084 R)
• M2: 803,191 km (0.034 R)
• M3: 1,288,337 km (0.097 R)
• M4: 1,887,925 km (0.114 R)
• M5: 2,552,140 km (0.097 R)
• M6: 3,552,800 km (0.096 R)
• M7: 4,020,892 km (0.109 R)
• M8: 4,664,611 km (0.094 R)
• M9: 6,123,340 km (0.119 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.76 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 229.3

Radius: 12.5

Gravity: 1.47 G

Time & Orbit

Eccentricity (e): 0.204

Orbit Range: 2.2 AU - 3.32 AU

Year: 3165 Days

Day: 10 Hours

Environment

Temp: -210 °C

Axial Tilt: 7.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 30,272,576 km

• M1: 155,432 km (0.111 R)
• M2: 564,433 km (0.077 R)
• M3: 962,363 km (0.114 R)
• M4: 1,450,052 km (0.118 R)
• M5: 2,294,532 km (0.113 R)
• M6: 2,743,176 km (0.083 R)
• M7: 3,460,498 km (0.043 R)
• M8: 4,903,369 km (0.061 R)
• M9: 5,608,873 km (0.1 R)
• M10: 6,793,239 km (0.086 R)
• M11: 7,388,938 km (0.081 R)
• M12: 8,561,337 km (0.117 R)
• M13: 9,063,686 km (0.087 R)
• M14: 10,371,022 km (0.087 R)
• M15: 10,797,675 km (0.059 R)
• M16: 11,838,876 km (0.089 R)
• M17: 12,423,654 km (0.096 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.31 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 164.9

Radius: 15

Gravity: 0.73 G

Time & Orbit

Eccentricity (e): 0.067

Orbit Range: 3.09 AU - 3.53 AU

Year: 4157 Days

Day: 10.2 Hours

Environment

Temp: -209 °C

Axial Tilt: 39.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 30,272,576 km

• M1: 186,549 km (0.064 R)
• M2: 792,869 km (0.113 R)
• M3: 1,326,634 km (0.091 R)
• M4: 1,991,297 km (0.089 R)
• M5: 2,978,643 km (0.063 R)
• M6: 3,733,514 km (0.064 R)
• M7: 5,059,400 km (0.084 R)
• M8: 5,604,535 km (0.088 R)
• M9: 7,310,100 km (0.091 R)
• M10: 8,881,177 km (0.073 R)
• M11: 10,200,181 km (0.109 R)
• M12: 12,157,669 km (0.102 R)
• M13: 13,015,314 km (0.119 R)
• M14: 13,738,919 km (0.12 R)
• M15: 15,784,520 km (0.062 R)
• M16: 16,558,540 km (0.078 R)

Planet 7 - Ice Giant

Semi-Major Axis: 6.98 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 106.5

Radius: 5.9

Gravity: 3.06 G

Time & Orbit

Eccentricity (e): 0.16

Orbit Range: 5.86 AU - 8.1 AU

Year: 12729 Days

Day: 21.4 Hours

Environment

Temp: -221 °C

Axial Tilt: 18 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 30,272,576 km

• M1: 73,752 km (0.051 R)
• M2: 270,922 km (0.049 R)
• M3: 562,488 km (0.067 R)
• M4: 779,854 km (0.103 R)
• M5: 1,730,399 km (0.091 R)
• M6: 2,645,788 km (0.057 R)
• M7: 3,691,926 km (0.079 R)
• M8: 3,939,660 km (0.075 R)
• M9: 5,097,697 km (0.086 R)
• M10: 6,370,775 km (0.071 R)
• M11: 8,482,199 km (0.113 R)
• M12: 9,779,961 km (0.051 R)
• M13: 11,345,203 km (0.111 R)
• M14: 13,699,724 km (0.045 R)
• M15: 14,022,108 km (0.094 R)
• M16: 14,294,525 km (0.057 R)
• M17: 15,133,021 km (0.119 R)
• M18: 15,944,739 km (0.098 R)
• M19: 21,077,143 km (0.103 R)
• M20: 22,980,926 km (0.11 R)
• M21: 24,758,148 km (0.104 R)

Kuiper Belt

Range: 30 - 49 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 460 - 17,276 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit