🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.31 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.62 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.2

Radius: 0.53

Gravity: 0.71 G

Time & Orbit

Eccentricity (e): 0.243

Orbit Range: 0.47 AU - 0.77 AU

Year: 320 Days

Day: 34.8 Hours

Environment

Temp: -127 °C

Axial Tilt: 4.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.75 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 266

Radius: 9.8

Gravity: 2.77 G

Time & Orbit

Eccentricity (e): 0.231

Orbit Range: 0.58 AU - 0.92 AU

Year: 426 Days

Day: 12 Hours

Environment

Temp: -142 °C

Axial Tilt: 9.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 62,824,815 km

• M1: 121,922 km (0.092 R)
• M2: 499,507 km (0.101 R)
• M3: 815,159 km (0.093 R)
• M4: 1,148,313 km (0.118 R)
• M5: 1,501,065 km (0.108 R)
• M6: 1,898,397 km (0.066 R)
• M7: 2,907,734 km (0.087 R)
• M8: 3,822,974 km (0.113 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.76 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 373.4

Radius: 12.6

Gravity: 2.35 G

Time & Orbit

Eccentricity (e): 0.187

Orbit Range: 0.62 AU - 0.9 AU

Year: 435 Days

Day: 7.2 Hours

Environment

Temp: -151 °C

Axial Tilt: 6.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 62,824,815 km

• M1: 156,629 km (0.027 R)
• M2: 561,142 km (0.059 R)
• M3: 966,103 km (0.109 R)
• M4: 1,460,823 km (0.119 R)
• M5: 2,527,905 km (0.072 R)
• M6: 3,125,399 km (0.112 R)
• M7: 4,431,388 km (0.101 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.81 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 544.8

Radius: 9.9

Gravity: 5.56 G

Time & Orbit

Eccentricity (e): 0.171

Orbit Range: 0.67 AU - 0.95 AU

Year: 478 Days

Day: 11.7 Hours

Environment

Temp: -145 °C

Axial Tilt: 16.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 62,824,815 km

• M1: 123,119 km (0.109 R)
• M2: 434,881 km (0.082 R)
• M3: 887,415 km (0.107 R)
• M4: 1,596,658 km (0.062 R)
• M5: 2,087,788 km (0.099 R)
• M6: 2,539,573 km (0.04 R)
• M7: 2,851,784 km (0.066 R)
• M8: 3,374,778 km (0.053 R)
• M9: 3,934,125 km (0.108 R)
• M10: 4,926,407 km (0.082 R)
• M11: 5,270,483 km (0.118 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 867.1

Radius: 10.7

Gravity: 7.57 G

Time & Orbit

Eccentricity (e): 0

Orbit Range: 1 AU - 1 AU

Year: 656 Days

Day: 6.5 Hours

Environment

Temp: -154 °C

Axial Tilt: 36.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 62,824,815 km

• M1: 133,142 km (0.099 R)
• M2: 468,092 km (0.096 R)
• M3: 825,780 km (0.092 R)
• M4: 1,164,470 km (0.026 R)
• M5: 1,622,239 km (0.118 R)
• M6: 2,092,276 km (0.036 R)
• M7: 2,824,557 km (0.109 R)
• M8: 3,388,841 km (0.088 R)
• M9: 3,733,963 km (0.105 R)
• M10: 4,133,240 km (0.108 R)
• M11: 4,511,872 km (0.11 R)
• M12: 5,035,464 km (0.11 R)
• M13: 5,636,997 km (0.104 R)
• M14: 6,896,462 km (0.065 R)
• M15: 7,431,424 km (0.107 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.53 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 335.5

Radius: 13

Gravity: 1.99 G

Time & Orbit

Eccentricity (e): 0.018

Orbit Range: 2.48 AU - 2.58 AU

Year: 2640 Days

Day: 10.1 Hours

Environment

Temp: -204 °C

Axial Tilt: 15.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 62,824,815 km

• M1: 161,715 km (0.058 R)
• M2: 651,798 km (0.104 R)
• M3: 1,960,929 km (0.056 R)
• M4: 2,517,882 km (0.063 R)
• M5: 3,086,952 km (0.084 R)
• M6: 4,465,796 km (0.103 R)
• M7: 5,462,117 km (0.104 R)
• M8: 6,221,626 km (0.113 R)
• M9: 7,548,260 km (0.069 R)
• M10: 8,069,459 km (0.038 R)
• M11: 8,801,740 km (0.088 R)
• M12: 11,266,964 km (0.117 R)
• M13: 11,871,937 km (0.056 R)
• M14: 12,982,702 km (0.112 R)
• M15: 15,227,866 km (0.102 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.82 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 594.4

Radius: 13.3

Gravity: 3.36 G

Time & Orbit

Eccentricity (e): 0.031

Orbit Range: 2.73 AU - 2.91 AU

Year: 3107 Days

Day: 14.3 Hours

Environment

Temp: -196 °C

Axial Tilt: 22.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 62,824,815 km

• M1: 187,446 km (0.085 R)
• M2: 1,049,878 km (0.042 R)
• M3: 2,925,237 km (0.084 R)
• M4: 3,423,398 km (0.035 R)
• M5: 6,174,203 km (0.073 R)
• M6: 8,768,380 km (0.097 R)
• M7: 10,857,813 km (0.075 R)
• M8: 12,104,861 km (0.106 R)
• M9: 14,882,146 km (0.108 R)
• M10: 15,383,299 km (0.091 R)
• M11: 18,515,429 km (0.08 R)
• M12: 19,036,927 km (0.031 R)
• M13: 20,970,929 km (0.091 R)

Planet 8 - Ice Giant

Semi-Major Axis: 9.51 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 416.7

Radius: 4.4

Gravity: 21.52 G

Time & Orbit

Eccentricity (e): 0.224

Orbit Range: 7.38 AU - 11.64 AU

Year: 19239 Days

Day: 15.6 Hours

Environment

Temp: -226 °C

Axial Tilt: 1.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (28)

Outer Limit: 62,824,815 km

• M1: 54,753 km (0.085 R)
• M2: 798,703 km (0.104 R)
• M3: 1,262,905 km (0.052 R)
• M4: 1,633,609 km (0.044 R)
• M5: 1,870,871 km (0.104 R)
• M6: 2,565,603 km (0.091 R)
• M7: 3,338,426 km (0.088 R)
• M8: 4,349,259 km (0.043 R)
• M9: 6,006,504 km (0.107 R)
• M10: 7,127,591 km (0.11 R)
• M11: 7,807,214 km (0.113 R)
• M12: 8,529,023 km (0.093 R)
• M13: 9,666,715 km (0.037 R)
• M14: 11,679,255 km (0.036 R)
• M15: 16,898,276 km (0.116 R)
• M16: 18,765,108 km (0.101 R)
• M17: 19,531,498 km (0.115 R)
• M18: 22,615,907 km (0.035 R)
• M19: 28,823,171 km (0.091 R)
• M20: 30,651,557 km (0.047 R)
• M21: 37,525,130 km (0.102 R)
• M22: 37,792,760 km (0.061 R)
• M23: 38,467,447 km (0.114 R)
• M24: 44,604,700 km (0.059 R)
• M25: 46,273,314 km (0.09 R)
• M26: 54,554,903 km (0.111 R)
• M27: 56,111,917 km (0.117 R)
• M28: 61,515,841 km (0.106 R)

Kuiper Belt

Range: 30 - 52 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 374 - 10,982 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit