🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.32 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.64 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.64

Radius: 1.85

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.167

Orbit Range: 0.53 AU - 0.75 AU

Year: 336 Days

Day: 26.4 Hours

Environment

Temp: -134 °C

Axial Tilt: 6.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.86 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 709.6

Radius: 8.4

Gravity: 10.06 G

Time & Orbit

Eccentricity (e): 0.211

Orbit Range: 0.68 AU - 1.04 AU

Year: 523 Days

Day: 8.9 Hours

Environment

Temp: -151 °C

Axial Tilt: 6.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 52,017,824 km

• M1: 104,419 km (0.113 R)
• M2: 421,417 km (0.079 R)
• M3: 1,065,586 km (0.117 R)
• M4: 1,348,026 km (0.111 R)
• M5: 1,613,263 km (0.074 R)
• M6: 1,964,519 km (0.089 R)
• M7: 2,346,891 km (0.043 R)
• M8: 2,822,313 km (0.088 R)
• M9: 3,641,362 km (0.092 R)
• M10: 3,923,952 km (0.065 R)
• M11: 4,192,331 km (0.109 R)
• M12: 4,719,065 km (0.112 R)
• M13: 5,922,580 km (0.115 R)
• M14: 6,410,867 km (0.074 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.14 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 447.2

Radius: 10.9

Gravity: 3.76 G

Time & Orbit

Eccentricity (e): 0.056

Orbit Range: 1.08 AU - 1.2 AU

Year: 798 Days

Day: 9 Hours

Environment

Temp: -161 °C

Axial Tilt: 39.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 52,017,824 km

• M1: 135,536 km (0.111 R)
• M2: 595,400 km (0.08 R)
• M3: 1,355,058 km (0.046 R)
• M4: 1,715,140 km (0.047 R)
• M5: 2,065,947 km (0.058 R)
• M6: 3,460,797 km (0.106 R)
• M7: 4,903,369 km (0.116 R)
• M8: 5,297,709 km (0.101 R)
• M9: 6,427,173 km (0.06 R)
• M10: 6,985,024 km (0.09 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.43 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 160.6

Radius: 13.2

Gravity: 0.92 G

Time & Orbit

Eccentricity (e): 0.143

Orbit Range: 1.23 AU - 1.63 AU

Year: 1122 Days

Day: 6.3 Hours

Environment

Temp: -181 °C

Axial Tilt: 1.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 52,017,824 km

• M1: 164,109 km (0.091 R)
• M2: 616,642 km (0.11 R)
• M3: 1,118,693 km (0.119 R)
• M4: 2,173,507 km (0.094 R)
• M5: 2,796,283 km (0.103 R)
• M6: 4,299,892 km (0.106 R)
• M7: 6,045,848 km (0.073 R)
• M8: 6,460,833 km (0.037 R)
• M9: 6,874,770 km (0.097 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.45 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 235.8

Radius: 14.9

Gravity: 1.06 G

Time & Orbit

Eccentricity (e): 0.08

Orbit Range: 1.33 AU - 1.57 AU

Year: 1145 Days

Day: 12.8 Hours

Environment

Temp: -181 °C

Axial Tilt: 2.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 52,017,824 km

• M1: 186,698 km (0.085 R)
• M2: 651,349 km (0.065 R)
• M3: 1,123,779 km (0.1 R)
• M4: 1,641,089 km (0.092 R)
• M5: 2,389,676 km (0.115 R)
• M6: 3,085,456 km (0.099 R)
• M7: 4,191,732 km (0.102 R)
• M8: 4,673,886 km (0.103 R)
• M9: 5,315,811 km (0.099 R)
• M10: 6,389,175 km (0.097 R)
• M11: 6,882,549 km (0.032 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.01 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 257.6

Radius: 12.1

Gravity: 1.76 G

Time & Orbit

Eccentricity (e): 0.031

Orbit Range: 1.95 AU - 2.07 AU

Year: 1869 Days

Day: 9.1 Hours

Environment

Temp: -184 °C

Axial Tilt: 17.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 52,017,824 km

• M1: 150,495 km (0.101 R)
• M2: 748,588 km (0.113 R)
• M3: 1,167,462 km (0.066 R)
• M4: 2,272,242 km (0.072 R)
• M5: 3,258,242 km (0.118 R)
• M6: 4,281,641 km (0.103 R)
• M7: 4,673,138 km (0.054 R)
• M8: 7,150,928 km (0.085 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.24 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 321.5

Radius: 9.6

Gravity: 3.49 G

Time & Orbit

Eccentricity (e): 0.231

Orbit Range: 2.49 AU - 3.99 AU

Year: 3826 Days

Day: 12.9 Hours

Environment

Temp: -205 °C

Axial Tilt: 36.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 52,017,824 km

• M1: 120,426 km (0.12 R)
• M2: 446,699 km (0.12 R)
• M3: 801,695 km (0.06 R)
• M4: 1,241,513 km (0.088 R)
• M5: 1,897,350 km (0.08 R)
• M6: 2,345,395 km (0.101 R)
• M7: 2,753,648 km (0.032 R)
• M8: 3,491,166 km (0.12 R)
• M9: 4,483,149 km (0.105 R)
• M10: 5,138,986 km (0.074 R)
• M11: 6,869,534 km (0.105 R)
• M12: 7,772,357 km (0.069 R)
• M13: 8,650,796 km (0.086 R)
• M14: 10,720,931 km (0.117 R)
• M15: 14,248,898 km (0.112 R)
• M16: 14,726,265 km (0.064 R)
• M17: 16,954,226 km (0.114 R)
• M18: 17,762,653 km (0.108 R)
• M19: 18,204,116 km (0.115 R)
• M20: 18,766,305 km (0.058 R)

Planet 8 - Gas Giant

Semi-Major Axis: 3.26 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 130

Radius: 13.9

Gravity: 0.67 G

Time & Orbit

Eccentricity (e): 0.164

Orbit Range: 2.73 AU - 3.79 AU

Year: 3861 Days

Day: 10.5 Hours

Environment

Temp: -211 °C

Axial Tilt: 28.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 52,017,824 km

• M1: 172,935 km (0.034 R)
• M2: 654,790 km (0.053 R)
• M3: 1,249,890 km (0.104 R)
• M4: 2,509,355 km (0.037 R)
• M5: 4,228,833 km (0.056 R)
• M6: 5,582,544 km (0.072 R)
• M7: 10,143,633 km (0.12 R)
• M8: 10,730,057 km (0.088 R)
• M9: 13,509,585 km (0.112 R)
• M10: 14,262,661 km (0.115 R)

Planet 9 - Gas Giant

Semi-Major Axis: 4.34 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 633.2

Radius: 10.5

Gravity: 5.74 G

Time & Orbit

Eccentricity (e): 0.176

Orbit Range: 3.58 AU - 5.1 AU

Year: 5931 Days

Day: 11.9 Hours

Environment

Temp: -220 °C

Axial Tilt: 4.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 52,017,824 km

• M1: 130,599 km (0.043 R)
• M2: 556,654 km (0.051 R)
• M3: 973,433 km (0.089 R)
• M4: 1,514,230 km (0.081 R)
• M5: 3,517,495 km (0.075 R)
• M6: 4,161,065 km (0.077 R)
• M7: 4,641,274 km (0.043 R)
• M8: 5,271,679 km (0.114 R)
• M9: 5,773,580 km (0.118 R)
• M10: 6,942,239 km (0.099 R)
• M11: 7,546,016 km (0.101 R)
• M12: 10,822,508 km (0.106 R)
• M13: 11,440,048 km (0.058 R)
• M14: 15,177,602 km (0.083 R)
• M15: 16,751,820 km (0.109 R)
• M16: 17,385,367 km (0.088 R)
• M17: 18,365,532 km (0.098 R)
• M18: 23,826,154 km (0.074 R)
• M19: 27,749,358 km (0.095 R)
• M20: 28,816,140 km (0.044 R)
• M21: 30,467,102 km (0.068 R)
• M22: 30,936,690 km (0.11 R)

Planet 10 - Ice Giant

Semi-Major Axis: 10.93 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 155.8

Radius: 3.1

Gravity: 16.21 G

Time & Orbit

Eccentricity (e): 0.107

Orbit Range: 9.76 AU - 12.1 AU

Year: 23705 Days

Day: 15.4 Hours

Environment

Temp: -235 °C

Axial Tilt: 39.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 52,017,824 km

• M1: 66,122 km (0.066 R)
• M2: 184,305 km (0.112 R)
• M3: 499,657 km (0.111 R)
• M4: 607,218 km (0.028 R)
• M5: 766,091 km (0.043 R)
• M6: 1,005,896 km (0.114 R)
• M7: 1,906,475 km (0.068 R)
• M8: 2,081,505 km (0.101 R)
• M9: 2,423,486 km (0.093 R)
• M10: 3,004,823 km (0.091 R)
• M11: 9,614,206 km (0.112 R)
• M12: 10,180,285 km (0.116 R)
• M13: 12,011,811 km (0.05 R)
• M14: 12,546,923 km (0.116 R)
• M15: 15,255,692 km (0.118 R)
• M16: 15,532,448 km (0.099 R)
• M17: 20,846,613 km (0.12 R)
• M18: 26,651,908 km (0.101 R)
• M19: 35,703,028 km (0.111 R)
• M20: 37,428,490 km (0.085 R)
• M21: 42,936,683 km (0.042 R)
• M22: 52,017,872 km (0.085 R)

Kuiper Belt

Range: 30 - 50 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 353 - 12,310 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit