🌌 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: 2.54

Radius: 1.45

Gravity: 1.21 G

Time & Orbit

Eccentricity (e): 0.107

Orbit Range: 0.6 AU - 0.74 AU

Year: 354 Days

Day: 33.9 Hours

Environment

Temp: -131 °C

Axial Tilt: 41.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 19,770,735 km

• M1: 33,809 km (0.096 R)
• M2: 322,234 km (0.088 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.95 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 789.7

Radius: 11.6

Gravity: 5.87 G

Time & Orbit

Eccentricity (e): 0.058

Orbit Range: 0.89 AU - 1.01 AU

Year: 598 Days

Day: 13.2 Hours

Environment

Temp: -147 °C

Axial Tilt: 5.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 19,770,735 km

• M1: 144,212 km (0.086 R)
• M2: 605,423 km (0.089 R)
• M3: 1,132,755 km (0.093 R)
• M4: 1,889,720 km (0.058 R)
• M5: 2,341,805 km (0.1 R)
• M6: 3,312,695 km (0.068 R)
• M7: 3,736,356 km (0.096 R)
• M8: 4,196,220 km (0.088 R)
• M9: 5,265,396 km (0.074 R)
• M10: 6,150,866 km (0.102 R)
• M11: 7,639,514 km (0.066 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.22 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 999.6

Radius: 13.7

Gravity: 5.33 G

Time & Orbit

Eccentricity (e): 0.07

Orbit Range: 1.13 AU - 1.31 AU

Year: 870 Days

Day: 11 Hours

Environment

Temp: -174 °C

Axial Tilt: 25 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 19,770,735 km

• M1: 170,392 km (0.095 R)
• M2: 632,500 km (0.088 R)
• M3: 1,186,162 km (0.086 R)
• M4: 1,664,576 km (0.07 R)
• M5: 2,136,407 km (0.079 R)
• M6: 2,809,598 km (0.107 R)
• M7: 3,259,738 km (0.077 R)
• M8: 4,479,259 km (0.092 R)
• M9: 5,290,977 km (0.096 R)
• M10: 5,815,468 km (0.09 R)
• M11: 6,242,420 km (0.099 R)
• M12: 8,457,665 km (0.078 R)
• M13: 9,493,630 km (0.104 R)
• M14: 10,363,392 km (0.063 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.62 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 720.7

Radius: 10.7

Gravity: 6.29 G

Time & Orbit

Eccentricity (e): 0.015

Orbit Range: 1.6 AU - 1.64 AU

Year: 1331 Days

Day: 9.3 Hours

Environment

Temp: -172 °C

Axial Tilt: 48.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 19,770,735 km

• M1: 133,142 km (0.071 R)
• M2: 515,065 km (0.119 R)
• M3: 938,128 km (0.097 R)
• M4: 1,447,359 km (0.116 R)
• M5: 1,995,037 km (0.079 R)
• M6: 2,413,762 km (0.116 R)
• M7: 2,755,892 km (0.088 R)
• M8: 3,384,203 km (0.118 R)
• M9: 4,926,258 km (0.072 R)
• M10: 5,375,949 km (0.103 R)
• M11: 6,148,024 km (0.082 R)
• M12: 6,694,505 km (0.112 R)
• M13: 7,994,660 km (0.049 R)
• M14: 8,646,308 km (0.085 R)
• M15: 9,000,107 km (0.096 R)
• M16: 9,768,591 km (0.088 R)
• M17: 11,577,080 km (0.09 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.3 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 81.5

Radius: 8.6

Gravity: 1.1 G

Time & Orbit

Eccentricity (e): 0.04

Orbit Range: 2.21 AU - 2.39 AU

Year: 2252 Days

Day: 12.9 Hours

Environment

Temp: -191 °C

Axial Tilt: 31.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 19,770,735 km

• M1: 114,592 km (0.048 R)
• M2: 416,780 km (0.112 R)
• M3: 750,233 km (0.119 R)
• M4: 1,564,644 km (0.12 R)
• M5: 2,063,553 km (0.091 R)
• M6: 4,503,793 km (0.05 R)
• M7: 5,017,961 km (0.077 R)
• M8: 5,901,486 km (0.117 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.74 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 828.8

Radius: 13.2

Gravity: 4.76 G

Time & Orbit

Eccentricity (e): 0.128

Orbit Range: 2.39 AU - 3.09 AU

Year: 2928 Days

Day: 5.1 Hours

Environment

Temp: -207 °C

Axial Tilt: 47.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 19,770,735 km

• M1: 164,109 km (0.084 R)
• M2: 614,099 km (0.11 R)
• M3: 1,190,051 km (0.03 R)
• M4: 1,660,536 km (0.089 R)
• M5: 2,081,954 km (0.085 R)
• M6: 2,515,339 km (0.109 R)
• M7: 3,924,999 km (0.042 R)
• M8: 4,572,160 km (0.106 R)
• M9: 5,623,085 km (0.099 R)
• M10: 6,361,649 km (0.12 R)
• M11: 6,799,223 km (0.093 R)
• M12: 8,970,188 km (0.114 R)
• M13: 10,292,932 km (0.077 R)
• M14: 10,734,395 km (0.081 R)
• M15: 11,915,620 km (0.088 R)
• M16: 12,903,116 km (0.095 R)
• M17: 18,735,937 km (0.103 R)
• M18: 19,274,489 km (0.104 R)
• M19: 20,132,881 km (0.116 R)
• M20: 21,080,584 km (0.119 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.89 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 485.3

Radius: 12.4

Gravity: 3.16 G

Time & Orbit

Eccentricity (e): 0.196

Orbit Range: 2.32 AU - 3.46 AU

Year: 3172 Days

Day: 6.5 Hours

Environment

Temp: -210 °C

Axial Tilt: 42.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 19,770,735 km

• M1: 157,078 km (0.1 R)
• M2: 577,897 km (0.104 R)
• M3: 964,009 km (0.036 R)
• M4: 2,214,796 km (0.049 R)
• M5: 2,770,253 km (0.114 R)
• M6: 3,525,573 km (0.073 R)
• M7: 4,204,448 km (0.039 R)
• M8: 5,227,698 km (0.09 R)
• M9: 6,382,593 km (0.063 R)
• M10: 8,178,067 km (0.101 R)
• M11: 8,574,352 km (0.097 R)
• M12: 9,767,095 km (0.119 R)
• M13: 10,175,946 km (0.104 R)
• M14: 11,027,757 km (0.049 R)
• M15: 12,010,764 km (0.083 R)
• M16: 13,639,436 km (0.089 R)
• M17: 18,602,196 km (0.108 R)

Planet 8 - Gas Giant

Semi-Major Axis: 3.79 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 487.1

Radius: 14.8

Gravity: 2.22 G

Time & Orbit

Eccentricity (e): 0.157

Orbit Range: 3.19 AU - 4.39 AU

Year: 4764 Days

Day: 8.3 Hours

Environment

Temp: -202 °C

Axial Tilt: 18.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 19,770,735 km

• M1: 184,005 km (0.104 R)
• M2: 956,080 km (0.117 R)
• M3: 1,475,484 km (0.112 R)
• M4: 2,131,470 km (0.072 R)
• M5: 2,823,211 km (0.092 R)
• M6: 4,355,841 km (0.074 R)
• M7: 5,239,965 km (0.115 R)
• M8: 7,137,464 km (0.036 R)
• M9: 8,996,218 km (0.064 R)
• M10: 10,223,369 km (0.115 R)
• M11: 10,898,953 km (0.07 R)
• M12: 12,575,945 km (0.109 R)
• M13: 13,204,256 km (0.114 R)
• M14: 14,057,562 km (0.038 R)
• M15: 17,663,021 km (0.093 R)
• M16: 18,390,365 km (0.12 R)
• M17: 18,886,432 km (0.086 R)
• M18: 21,913,694 km (0.09 R)
• M19: 23,110,178 km (0.065 R)
• M20: 25,403,663 km (0.114 R)

Planet 9 - Ice Giant

Semi-Major Axis: 6.08 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 51.3

Radius: 7.9

Gravity: 0.82 G

Time & Orbit

Eccentricity (e): 0.047

Orbit Range: 5.79 AU - 6.37 AU

Year: 9680 Days

Day: 22.2 Hours

Environment

Temp: -217 °C

Axial Tilt: 3.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 19,770,735 km

• M1: 98,286 km (0.034 R)
• M2: 736,919 km (0.072 R)
• M3: 2,356,466 km (0.102 R)
• M4: 3,265,273 km (0.075 R)
• M5: 5,377,146 km (0.108 R)
• M6: 7,139,259 km (0.061 R)
• M7: 8,070,057 km (0.046 R)
• M8: 8,666,055 km (0.101 R)
• M9: 8,940,118 km (0.043 R)
• M10: 9,326,530 km (0.079 R)
• M11: 11,925,643 km (0.086 R)
• M12: 12,265,081 km (0.088 R)
• M13: 14,344,042 km (0.076 R)
• M14: 15,668,133 km (0.035 R)
• M15: 17,125,216 km (0.091 R)
• M16: 19,360,508 km (0.079 R)

Kuiper Belt

Range: 30 - 59 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 214 - 15,018 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit