🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.26 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.52 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.12

Radius: 1.05

Gravity: 1.02 G

Time & Orbit

Eccentricity (e): 0.237

Orbit Range: 0.4 AU - 0.64 AU

Year: 242 Days

Day: 44.4 Hours

Environment

Temp: -116 °C

Axial Tilt: 4.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 88,709,857 km

• M1: 203,154 km (0.069 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.55 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.41

Radius: 1.42

Gravity: 1.2 G

Time & Orbit

Eccentricity (e): 0.098

Orbit Range: 0.5 AU - 0.6 AU

Year: 263 Days

Day: 20.1 Hours

Environment

Temp: -118 °C

Axial Tilt: 10 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.92 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 551.8

Radius: 10.1

Gravity: 5.41 G

Time & Orbit

Eccentricity (e): 0.18

Orbit Range: 0.75 AU - 1.09 AU

Year: 570 Days

Day: 13.8 Hours

Environment

Temp: -150 °C

Axial Tilt: 37 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 88,709,857 km

• M1: 125,812 km (0.081 R)
• M2: 498,161 km (0.1 R)
• M3: 897,138 km (0.104 R)
• M4: 1,233,135 km (0.097 R)
• M5: 2,074,025 km (0.106 R)
• M6: 2,463,877 km (0.109 R)
• M7: 2,858,666 km (0.118 R)
• M8: 3,368,346 km (0.113 R)
• M9: 3,816,391 km (0.053 R)
• M10: 4,785,486 km (0.115 R)
• M11: 5,170,102 km (0.108 R)
• M12: 5,506,249 km (0.1 R)
• M13: 6,297,771 km (0.088 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.24 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 822.9

Radius: 12.4

Gravity: 5.35 G

Time & Orbit

Eccentricity (e): 0.152

Orbit Range: 1.05 AU - 1.43 AU

Year: 892 Days

Day: 6.4 Hours

Environment

Temp: -175 °C

Axial Tilt: 12.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 88,709,857 km

• M1: 154,385 km (0.034 R)
• M2: 544,387 km (0.098 R)
• M3: 1,220,719 km (0.111 R)
• M4: 1,619,995 km (0.101 R)
• M5: 2,028,547 km (0.045 R)
• M6: 2,804,212 km (0.081 R)
• M7: 3,516,298 km (0.112 R)
• M8: 4,050,213 km (0.089 R)
• M9: 4,726,395 km (0.094 R)
• M10: 5,167,410 km (0.089 R)
• M11: 5,736,929 km (0.049 R)
• M12: 6,261,269 km (0.083 R)
• M13: 6,771,847 km (0.1 R)
• M14: 7,358,121 km (0.075 R)
• M15: 7,801,080 km (0.115 R)
• M16: 9,266,391 km (0.119 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.7 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 681.8

Radius: 11.4

Gravity: 5.25 G

Time & Orbit

Eccentricity (e): 0.038

Orbit Range: 1.64 AU - 1.76 AU

Year: 1431 Days

Day: 7.5 Hours

Environment

Temp: -176 °C

Axial Tilt: 17.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 88,709,857 km

• M1: 141,819 km (0.107 R)
• M2: 598,840 km (0.079 R)
• M3: 1,157,289 km (0.103 R)
• M4: 1,637,797 km (0.091 R)
• M5: 2,103,047 km (0.08 R)
• M6: 2,870,185 km (0.049 R)
• M7: 3,585,113 km (0.032 R)
• M8: 4,090,006 km (0.039 R)
• M9: 5,872,614 km (0.065 R)
• M10: 6,241,223 km (0.077 R)
• M11: 6,974,402 km (0.101 R)
• M12: 7,682,449 km (0.079 R)
• M13: 8,670,992 km (0.115 R)
• M14: 9,584,137 km (0.049 R)
• M15: 11,142,049 km (0.115 R)
• M16: 11,565,561 km (0.113 R)
• M17: 12,036,495 km (0.08 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.58 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 55.7

Radius: 11.4

Gravity: 0.43 G

Time & Orbit

Eccentricity (e): 0.059

Orbit Range: 3.37 AU - 3.79 AU

Year: 4374 Days

Day: 6.8 Hours

Environment

Temp: -200 °C

Axial Tilt: 45 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 88,709,857 km

• M1: 161,715 km (0.05 R)
• M2: 594,352 km (0.106 R)
• M3: 1,162,675 km (0.059 R)
• M4: 1,549,834 km (0.077 R)
• M5: 2,003,564 km (0.11 R)
• M6: 2,389,527 km (0.084 R)
• M7: 3,014,547 km (0.101 R)
• M8: 3,494,756 km (0.084 R)
• M9: 4,076,692 km (0.052 R)
• M10: 4,855,648 km (0.082 R)
• M11: 5,539,460 km (0.119 R)
• M12: 6,218,035 km (0.086 R)
• M13: 6,853,378 km (0.118 R)
• M14: 7,981,196 km (0.078 R)
• M15: 11,338,023 km (0.096 R)

Planet 7 - Ice Giant

Semi-Major Axis: 9.26 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 465.8

Radius: 6

Gravity: 12.94 G

Time & Orbit

Eccentricity (e): 0.055

Orbit Range: 8.75 AU - 9.77 AU

Year: 18194 Days

Day: 19.6 Hours

Environment

Temp: -234 °C

Axial Tilt: 4.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 88,709,857 km

• M1: 82,877 km (0.109 R)
• M2: 2,054,428 km (0.111 R)
• M3: 2,787,906 km (0.049 R)
• M4: 3,490,418 km (0.065 R)
• M5: 5,678,586 km (0.106 R)
• M6: 11,093,580 km (0.106 R)
• M7: 13,627,468 km (0.048 R)
• M8: 17,226,344 km (0.082 R)
• M9: 18,360,446 km (0.105 R)
• M10: 25,914,690 km (0.073 R)
• M11: 26,228,546 km (0.107 R)
• M12: 30,542,500 km (0.08 R)
• M13: 34,417,384 km (0.106 R)
• M14: 35,306,593 km (0.085 R)
• M15: 36,341,512 km (0.093 R)
• M16: 42,397,383 km (0.035 R)
• M17: 42,833,162 km (0.086 R)
• M18: 45,815,245 km (0.074 R)

Planet 8 - Ice Giant

Semi-Major Axis: 10.39 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 928.6

Radius: 4.3

Gravity: 50.22 G

Time & Orbit

Eccentricity (e): 0.191

Orbit Range: 8.41 AU - 12.37 AU

Year: 21624 Days

Day: 15.1 Hours

Environment

Temp: -234 °C

Axial Tilt: 23.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (39)

Outer Limit: 88,709,857 km

• M1: 53,556 km (0.052 R)
• M2: 195,524 km (0.082 R)
• M3: 437,424 km (0.096 R)
• M4: 817,253 km (0.106 R)
• M5: 1,455,438 km (0.117 R)
• M6: 2,669,125 km (0.052 R)
• M7: 3,041,026 km (0.091 R)
• M8: 3,210,670 km (0.064 R)
• M9: 3,854,688 km (0.108 R)
• M10: 5,899,392 km (0.071 R)
• M11: 9,495,126 km (0.056 R)
• M12: 11,675,964 km (0.071 R)
• M13: 12,375,933 km (0.061 R)
• M14: 16,645,456 km (0.079 R)
• M15: 17,262,098 km (0.089 R)
• M16: 17,530,926 km (0.12 R)
• M17: 21,802,094 km (0.084 R)
• M18: 25,774,217 km (0.092 R)
• M19: 26,361,389 km (0.107 R)
• M20: 26,598,801 km (0.104 R)
• M21: 27,440,887 km (0.082 R)
• M22: 28,053,042 km (0.091 R)
• M23: 29,177,868 km (0.057 R)
• M24: 32,732,313 km (0.082 R)
• M25: 32,869,345 km (0.053 R)
• M26: 34,400,778 km (0.064 R)
• M27: 34,969,250 km (0.11 R)
• M28: 38,818,104 km (0.072 R)
• M29: 42,939,825 km (0.113 R)
• M30: 48,578,917 km (0.097 R)
• M31: 50,380,524 km (0.079 R)
• M32: 59,446,304 km (0.091 R)
• M33: 64,039,856 km (0.04 R)
• M34: 64,468,754 km (0.074 R)
• M35: 70,220,792 km (0.047 R)
• M36: 74,161,050 km (0.104 R)
• M37: 78,246,119 km (0.068 R)
• M38: 78,736,351 km (0.119 R)
• M39: 81,720,829 km (0.08 R)

Kuiper Belt

Range: 30 - 45 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 390 - 13,354 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit