🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.34 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.67 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.51

Radius: 1.83

Gravity: 1.35 G

Time & Orbit

Eccentricity (e): 0.069

Orbit Range: 0.62 AU - 0.72 AU

Year: 349 Days

Day: 45.8 Hours

Environment

Temp: -138 °C

Axial Tilt: 10.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.79 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 561.3

Radius: 8.2

Gravity: 8.35 G

Time & Orbit

Eccentricity (e): 0.177

Orbit Range: 0.65 AU - 0.93 AU

Year: 446 Days

Day: 10.6 Hours

Environment

Temp: -139 °C

Axial Tilt: 23.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 45,609,515 km

• M1: 102,026 km (0.065 R)
• M2: 364,869 km (0.097 R)
• M3: 841,638 km (0.099 R)
• M4: 1,150,258 km (0.084 R)
• M5: 1,416,542 km (0.089 R)
• M6: 1,710,053 km (0.068 R)
• M7: 2,506,512 km (0.042 R)
• M8: 2,783,268 km (0.115 R)
• M9: 3,530,061 km (0.096 R)
• M10: 4,914,589 km (0.093 R)
• M11: 5,271,081 km (0.054 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.07 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 940.1

Radius: 11.8

Gravity: 6.75 G

Time & Orbit

Eccentricity (e): 0.241

Orbit Range: 0.81 AU - 1.33 AU

Year: 704 Days

Day: 8.8 Hours

Environment

Temp: -155 °C

Axial Tilt: 16.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 45,609,515 km

• M1: 146,756 km (0.096 R)
• M2: 539,749 km (0.087 R)
• M3: 907,610 km (0.05 R)
• M4: 1,331,720 km (0.075 R)
• M5: 2,000,124 km (0.045 R)
• M6: 2,510,402 km (0.099 R)
• M7: 2,918,505 km (0.09 R)
• M8: 3,467,080 km (0.097 R)
• M9: 3,945,494 km (0.105 R)
• M10: 4,500,951 km (0.048 R)
• M11: 4,911,597 km (0.109 R)
• M12: 5,309,976 km (0.086 R)
• M13: 5,968,357 km (0.099 R)
• M14: 6,900,501 km (0.066 R)
• M15: 7,685,291 km (0.11 R)
• M16: 8,631,797 km (0.117 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.15 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 569.8

Radius: 8.1

Gravity: 8.68 G

Time & Orbit

Eccentricity (e): 0.094

Orbit Range: 1.04 AU - 1.26 AU

Year: 784 Days

Day: 13.7 Hours

Environment

Temp: -175 °C

Axial Tilt: 19.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 45,609,515 km

• M1: 100,679 km (0.06 R)
• M2: 555,457 km (0.098 R)
• M3: 819,647 km (0.049 R)
• M4: 1,170,155 km (0.082 R)
• M5: 1,480,271 km (0.119 R)
• M6: 1,750,744 km (0.096 R)
• M7: 2,587,445 km (0.105 R)
• M8: 3,132,879 km (0.092 R)
• M9: 3,487,426 km (0.099 R)
• M10: 3,810,557 km (0.046 R)
• M11: 4,388,005 km (0.078 R)
• M12: 4,664,761 km (0.061 R)
• M13: 5,910,013 km (0.068 R)
• M14: 6,167,471 km (0.084 R)
• M15: 6,536,230 km (0.053 R)
• M16: 7,873,037 km (0.062 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.72 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 209.5

Radius: 9.4

Gravity: 2.37 G

Time & Orbit

Eccentricity (e): 0.235

Orbit Range: 1.32 AU - 2.12 AU

Year: 1434 Days

Day: 5.1 Hours

Environment

Temp: -192 °C

Axial Tilt: 37.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 45,609,515 km

• M1: 118,781 km (0.118 R)
• M2: 419,472 km (0.057 R)
• M3: 750,084 km (0.1 R)
• M4: 1,106,875 km (0.112 R)
• M5: 1,856,061 km (0.115 R)
• M6: 2,177,846 km (0.045 R)
• M7: 2,593,129 km (0.111 R)
• M8: 3,124,800 km (0.115 R)
• M9: 3,713,019 km (0.082 R)
• M10: 4,671,942 km (0.088 R)
• M11: 5,019,906 km (0.1 R)
• M12: 5,385,224 km (0.084 R)
• M13: 5,729,150 km (0.104 R)
• M14: 7,369,490 km (0.115 R)
• M15: 8,260,046 km (0.116 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.86 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 470.2

Radius: 13.5

Gravity: 2.58 G

Time & Orbit

Eccentricity (e): 0.139

Orbit Range: 1.6 AU - 2.12 AU

Year: 1613 Days

Day: 12.8 Hours

Environment

Temp: -189 °C

Axial Tilt: 13.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 45,609,515 km

• M1: 168,148 km (0.074 R)
• M2: 592,258 km (0.109 R)
• M3: 1,164,470 km (0.111 R)
• M4: 1,622,090 km (0.087 R)
• M5: 2,280,919 km (0.082 R)
• M6: 3,001,232 km (0.08 R)
• M7: 3,737,703 km (0.067 R)
• M8: 4,536,107 km (0.042 R)
• M9: 5,320,149 km (0.076 R)
• M10: 6,664,136 km (0.026 R)
• M11: 7,599,273 km (0.098 R)
• M12: 8,251,370 km (0.088 R)
• M13: 8,764,790 km (0.093 R)
• M14: 10,467,213 km (0.105 R)
• M15: 11,069,644 km (0.102 R)

Planet 7 - Ice Giant

Semi-Major Axis: 7.89 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 418.2

Radius: 6.7

Gravity: 9.32 G

Time & Orbit

Eccentricity (e): 0.087

Orbit Range: 7.2 AU - 8.58 AU

Year: 14091 Days

Day: 16.4 Hours

Environment

Temp: -228 °C

Axial Tilt: 6.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (34)

Outer Limit: 45,609,515 km

• M1: 83,326 km (0.102 R)
• M2: 497,712 km (0.07 R)
• M3: 745,596 km (0.107 R)
• M4: 1,032,824 km (0.076 R)
• M5: 1,867,430 km (0.08 R)
• M6: 2,124,439 km (0.092 R)
• M7: 2,667,928 km (0.058 R)
• M8: 2,905,340 km (0.095 R)
• M9: 3,704,043 km (0.097 R)
• M10: 5,313,567 km (0.109 R)
• M11: 5,691,152 km (0.082 R)
• M12: 8,207,687 km (0.113 R)
• M13: 9,140,579 km (0.079 R)
• M14: 9,384,424 km (0.12 R)
• M15: 9,632,756 km (0.119 R)
• M16: 10,246,407 km (0.097 R)
• M17: 10,831,634 km (0.067 R)
• M18: 12,068,509 km (0.119 R)
• M19: 12,660,767 km (0.119 R)
• M20: 14,031,682 km (0.048 R)
• M21: 15,224,725 km (0.045 R)
• M22: 17,286,782 km (0.046 R)
• M23: 17,585,080 km (0.072 R)
• M24: 20,178,958 km (0.082 R)
• M25: 21,523,842 km (0.08 R)
• M26: 22,218,126 km (0.064 R)
• M27: 26,900,240 km (0.105 R)
• M28: 29,576,696 km (0.049 R)
• M29: 31,419,442 km (0.11 R)
• M30: 32,538,434 km (0.079 R)
• M31: 36,541,973 km (0.076 R)
• M32: 38,534,766 km (0.102 R)
• M33: 42,735,474 km (0.068 R)
• M34: 49,894,181 km (0.025 R)

Planet 8 - Ice Giant

Semi-Major Axis: 9.8 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 155.1

Radius: 6

Gravity: 4.31 G

Time & Orbit

Eccentricity (e): 0.042

Orbit Range: 9.39 AU - 10.21 AU

Year: 19506 Days

Day: 22.1 Hours

Environment

Temp: -240 °C

Axial Tilt: 42 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 45,609,515 km

• M1: 87,664 km (0.116 R)
• M2: 449,990 km (0.111 R)
• M3: 744,249 km (0.026 R)
• M4: 2,026,902 km (0.111 R)
• M5: 5,800,657 km (0.096 R)
• M6: 8,463,051 km (0.066 R)
• M7: 8,913,191 km (0.099 R)
• M8: 9,666,266 km (0.12 R)
• M9: 12,123,561 km (0.038 R)
• M10: 12,521,940 km (0.103 R)
• M11: 16,718,759 km (0.059 R)
• M12: 20,301,029 km (0.084 R)
• M13: 29,239,951 km (0.119 R)
• M14: 29,545,430 km (0.099 R)
• M15: 30,475,031 km (0.088 R)
• M16: 30,789,037 km (0.053 R)
• M17: 33,602,674 km (0.118 R)
• M18: 33,937,923 km (0.11 R)
• M19: 38,746,447 km (0.074 R)
• M20: 45,200,997 km (0.076 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: 356 - 14,651 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit