🌌 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: 3.9

Radius: 1.72

Gravity: 1.32 G

Time & Orbit

Eccentricity (e): 0.117

Orbit Range: 0.57 AU - 0.71 AU

Year: 336 Days

Day: 29.3 Hours

Environment

Temp: -140 °C

Axial Tilt: 18.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 39,963,188 km

• M1: 313,557 km (0.112 R)

Planet 2 - Gas Giant

Semi-Major Axis: 1.09 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 916.4

Radius: 12.8

Gravity: 5.59 G

Time & Orbit

Eccentricity (e): 0.15

Orbit Range: 0.93 AU - 1.25 AU

Year: 747 Days

Day: 12.9 Hours

Environment

Temp: -164 °C

Axial Tilt: 17.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 39,963,188 km

• M1: 159,172 km (0.12 R)
• M2: 709,393 km (0.117 R)
• M3: 1,177,186 km (0.106 R)
• M4: 1,682,378 km (0.038 R)
• M5: 3,028,011 km (0.04 R)
• M6: 3,594,837 km (0.084 R)
• M7: 4,427,349 km (0.105 R)
• M8: 5,556,663 km (0.119 R)
• M9: 6,220,579 km (0.116 R)
• M10: 7,004,621 km (0.113 R)
• M11: 8,201,703 km (0.068 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.25 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 230.4

Radius: 12.6

Gravity: 1.45 G

Time & Orbit

Eccentricity (e): 0.203

Orbit Range: 1 AU - 1.5 AU

Year: 917 Days

Day: 12.8 Hours

Environment

Temp: -180 °C

Axial Tilt: 35.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 39,963,188 km

• M1: 161,267 km (0.03 R)
• M2: 657,782 km (0.033 R)
• M3: 1,615,657 km (0.067 R)
• M4: 3,701,500 km (0.066 R)
• M5: 4,137,279 km (0.116 R)
• M6: 4,777,258 km (0.086 R)
• M7: 5,179,078 km (0.075 R)
• M8: 5,833,419 km (0.098 R)
• M9: 6,236,885 km (0.092 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.41 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 484.3

Radius: 9

Gravity: 5.98 G

Time & Orbit

Eccentricity (e): 0.25

Orbit Range: 1.06 AU - 1.76 AU

Year: 1098 Days

Day: 6 Hours

Environment

Temp: -182 °C

Axial Tilt: 18.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 39,963,188 km

• M1: 111,899 km (0.063 R)
• M2: 392,096 km (0.11 R)
• M3: 745,596 km (0.087 R)
• M4: 1,286,093 km (0.115 R)
• M5: 1,670,559 km (0.103 R)
• M6: 2,141,045 km (0.086 R)
• M7: 2,430,517 km (0.107 R)
• M8: 3,115,974 km (0.09 R)
• M9: 3,924,850 km (0.068 R)
• M10: 4,429,294 km (0.05 R)
• M11: 4,831,114 km (0.032 R)
• M12: 5,469,597 km (0.038 R)
• M13: 6,709,614 km (0.108 R)
• M14: 7,626,200 km (0.108 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.71 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 299.8

Radius: 8.2

Gravity: 4.46 G

Time & Orbit

Eccentricity (e): 0.137

Orbit Range: 1.48 AU - 1.94 AU

Year: 1467 Days

Day: 9.5 Hours

Environment

Temp: -183 °C

Axial Tilt: 9.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 39,963,188 km

• M1: 111,151 km (0.049 R)
• M2: 436,527 km (0.071 R)
• M3: 743,352 km (0.094 R)
• M4: 1,210,097 km (0.114 R)
• M5: 2,490,057 km (0.076 R)
• M6: 2,904,891 km (0.101 R)
• M7: 4,262,043 km (0.068 R)
• M8: 4,802,540 km (0.108 R)
• M9: 7,504,727 km (0.06 R)
• M10: 9,883,782 km (0.084 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.77 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 787.2

Radius: 10.7

Gravity: 6.88 G

Time & Orbit

Eccentricity (e): 0.118

Orbit Range: 2.44 AU - 3.1 AU

Year: 3024 Days

Day: 9.4 Hours

Environment

Temp: -195 °C

Axial Tilt: 41.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 39,963,188 km

• M1: 133,142 km (0.101 R)
• M2: 610,958 km (0.089 R)
• M3: 1,253,780 km (0.056 R)
• M4: 2,155,107 km (0.088 R)
• M5: 2,589,090 km (0.056 R)
• M6: 2,927,331 km (0.092 R)
• M7: 3,915,575 km (0.079 R)
• M8: 6,598,313 km (0.118 R)
• M9: 7,110,985 km (0.098 R)
• M10: 8,250,023 km (0.057 R)
• M11: 8,667,401 km (0.119 R)
• M12: 10,600,954 km (0.12 R)
• M13: 11,347,447 km (0.088 R)
• M14: 13,225,349 km (0.109 R)
• M15: 13,605,328 km (0.104 R)
• M16: 17,530,477 km (0.116 R)
• M17: 21,169,445 km (0.031 R)
• M18: 22,553,973 km (0.116 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.55 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 775.5

Radius: 10.2

Gravity: 7.45 G

Time & Orbit

Eccentricity (e): 0.11

Orbit Range: 3.16 AU - 3.94 AU

Year: 4388 Days

Day: 14.3 Hours

Environment

Temp: -209 °C

Axial Tilt: 32.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 39,963,188 km

• M1: 136,732 km (0.081 R)
• M2: 679,623 km (0.084 R)
• M3: 1,067,979 km (0.094 R)
• M4: 1,422,676 km (0.066 R)
• M5: 2,224,371 km (0.052 R)
• M6: 2,814,385 km (0.08 R)
• M7: 5,445,662 km (0.073 R)
• M8: 6,742,376 km (0.11 R)
• M9: 9,077,898 km (0.065 R)
• M10: 9,768,292 km (0.039 R)
• M11: 13,340,989 km (0.089 R)
• M12: 13,703,614 km (0.038 R)
• M13: 14,286,896 km (0.089 R)
• M14: 19,169,770 km (0.115 R)
• M15: 21,273,864 km (0.089 R)
• M16: 26,096,301 km (0.063 R)
• M17: 26,420,031 km (0.053 R)
• M18: 27,240,725 km (0.05 R)
• M19: 28,674,920 km (0.091 R)

Asteroid Belt

Center: 4.14 AU

Composition

Type: Outer System (Icy)

A dense region of planetesimals and debris.

Boundary

Planet 8 - Gas Giant

Semi-Major Axis: 4.72 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 490.1

Radius: 14.9

Gravity: 2.21 G

Time & Orbit

Eccentricity (e): 0.123

Orbit Range: 4.14 AU - 5.3 AU

Year: 6727 Days

Day: 7.1 Hours

Environment

Temp: -211 °C

Axial Tilt: 0.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 39,963,188 km

• M1: 185,352 km (0.03 R)
• M2: 672,592 km (0.076 R)
• M3: 1,169,855 km (0.055 R)
• M4: 1,995,336 km (0.09 R)
• M5: 2,524,464 km (0.104 R)
• M6: 3,433,720 km (0.09 R)
• M7: 4,475,968 km (0.108 R)
• M8: 5,030,378 km (0.104 R)
• M9: 5,720,174 km (0.113 R)
• M10: 6,310,487 km (0.078 R)
• M11: 7,044,713 km (0.117 R)
• M12: 8,644,812 km (0.107 R)
• M13: 9,340,293 km (0.051 R)
• M14: 10,704,924 km (0.086 R)
• M15: 11,507,667 km (0.098 R)
• M16: 12,812,908 km (0.054 R)
• M17: 13,772,878 km (0.064 R)
• M18: 14,439,186 km (0.059 R)
• M19: 19,376,664 km (0.039 R)
• M20: 20,284,723 km (0.11 R)
• M21: 21,221,206 km (0.096 R)
• M22: 29,504,889 km (0.042 R)
• M23: 31,463,125 km (0.1 R)
• M24: 32,328,399 km (0.109 R)

Planet 9 - Ice Giant

Semi-Major Axis: 11.07 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 68

Radius: 4.1

Gravity: 4.05 G

Time & Orbit

Eccentricity (e): 0.195

Orbit Range: 8.91 AU - 13.23 AU

Year: 24162 Days

Day: 18 Hours

Environment

Temp: -228 °C

Axial Tilt: 0.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 39,963,188 km

• M1: 51,013 km (0.078 R)
• M2: 283,787 km (0.099 R)
• M3: 447,597 km (0.103 R)
• M4: 659,727 km (0.094 R)
• M5: 872,006 km (0.106 R)
• M6: 2,761,726 km (0.115 R)
• M7: 3,785,873 km (0.104 R)
• M8: 5,191,196 km (0.1 R)
• M9: 5,859,449 km (0.05 R)
• M10: 6,476,391 km (0.115 R)
• M11: 6,691,363 km (0.075 R)
• M12: 6,911,122 km (0.102 R)
• M13: 8,248,079 km (0.104 R)
• M14: 9,289,729 km (0.103 R)
• M15: 10,562,806 km (0.094 R)
• M16: 19,284,362 km (0.108 R)
• M17: 20,794,104 km (0.059 R)
• M18: 22,137,942 km (0.09 R)
• M19: 22,299,657 km (0.09 R)
• M20: 24,648,643 km (0.096 R)
• M21: 31,639,650 km (0.088 R)
• M22: 37,501,194 km (0.057 R)
• M23: 38,426,756 km (0.093 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: 220 - 10,793 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit