🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.33 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.66 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.92

Radius: 0.97

Gravity: 0.98 G

Time & Orbit

Eccentricity (e): 0.102

Orbit Range: 0.59 AU - 0.73 AU

Year: 352 Days

Day: 40.6 Hours

Environment

Temp: -137 °C

Axial Tilt: 0.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.69 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 909.5

Radius: 8.7

Gravity: 12.02 G

Time & Orbit

Eccentricity (e): 0.207

Orbit Range: 0.55 AU - 0.83 AU

Year: 376 Days

Day: 11.3 Hours

Environment

Temp: -143 °C

Axial Tilt: 36.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 12,955,917 km

• M1: 108,159 km (0.115 R)
• M2: 390,450 km (0.1 R)
• M3: 665,860 km (0.084 R)
• M4: 952,938 km (0.026 R)
• M5: 1,282,203 km (0.103 R)
• M6: 1,594,414 km (0.06 R)
• M7: 1,925,325 km (0.096 R)
• M8: 2,441,288 km (0.094 R)
• M9: 2,810,196 km (0.108 R)
• M10: 3,170,278 km (0.103 R)
• M11: 3,748,923 km (0.119 R)
• M12: 4,269,673 km (0.12 R)
• M13: 4,852,805 km (0.091 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.72 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 485.3

Radius: 10.5

Gravity: 4.4 G

Time & Orbit

Eccentricity (e): 0.021

Orbit Range: 0.7 AU - 0.74 AU

Year: 401 Days

Day: 12.9 Hours

Environment

Temp: -136 °C

Axial Tilt: 23.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 12,955,917 km

• M1: 130,599 km (0.043 R)
• M2: 499,507 km (0.12 R)
• M3: 835,803 km (0.117 R)
• M4: 1,303,446 km (0.076 R)
• M5: 1,703,920 km (0.073 R)
• M6: 2,497,237 km (0.109 R)
• M7: 2,887,239 km (0.096 R)
• M8: 3,601,270 km (0.11 R)
• M9: 4,114,390 km (0.033 R)
• M10: 4,523,840 km (0.1 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.98 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 831

Radius: 11.1

Gravity: 6.74 G

Time & Orbit

Eccentricity (e): 0.202

Orbit Range: 0.78 AU - 1.18 AU

Year: 636 Days

Day: 11.8 Hours

Environment

Temp: -162 °C

Axial Tilt: 27.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 12,955,917 km

• M1: 138,079 km (0.119 R)
• M2: 521,199 km (0.096 R)
• M3: 867,967 km (0.079 R)
• M4: 1,225,955 km (0.05 R)
• M5: 1,621,641 km (0.069 R)
• M6: 2,019,721 km (0.063 R)
• M7: 2,378,905 km (0.114 R)
• M8: 2,969,069 km (0.032 R)
• M9: 4,148,050 km (0.102 R)
• M10: 4,735,221 km (0.058 R)
• M11: 5,127,467 km (0.064 R)
• M12: 5,785,548 km (0.116 R)
• M13: 6,812,986 km (0.089 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.14 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 97

Radius: 11.3

Gravity: 0.76 G

Time & Orbit

Eccentricity (e): 0.221

Orbit Range: 0.89 AU - 1.39 AU

Year: 798 Days

Day: 5.6 Hours

Environment

Temp: -163 °C

Axial Tilt: 18.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 12,955,917 km

• M1: 140,472 km (0.074 R)
• M2: 539,001 km (0.116 R)
• M3: 1,334,712 km (0.066 R)
• M4: 2,297,075 km (0.104 R)
• M5: 2,831,738 km (0.055 R)
• M6: 3,393,628 km (0.098 R)
• M7: 3,847,956 km (0.119 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.3 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 221.2

Radius: 10.6

Gravity: 1.97 G

Time & Orbit

Eccentricity (e): 0.205

Orbit Range: 1.03 AU - 1.57 AU

Year: 972 Days

Day: 12.8 Hours

Environment

Temp: -175 °C

Axial Tilt: 9.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 12,955,917 km

• M1: 131,796 km (0.101 R)
• M2: 708,944 km (0.095 R)
• M3: 1,236,127 km (0.076 R)
• M4: 1,627,625 km (0.083 R)
• M5: 2,084,198 km (0.077 R)
• M6: 2,667,480 km (0.046 R)
• M7: 3,381,660 km (0.086 R)
• M8: 4,160,766 km (0.083 R)
• M9: 4,639,479 km (0.098 R)
• M10: 5,888,920 km (0.101 R)

Planet 7 - Gas Giant

Semi-Major Axis: 1.7 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 930.5

Radius: 13.2

Gravity: 5.34 G

Time & Orbit

Eccentricity (e): 0.061

Orbit Range: 1.6 AU - 1.8 AU

Year: 1454 Days

Day: 7 Hours

Environment

Temp: -181 °C

Axial Tilt: 38 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 12,955,917 km

• M1: 164,258 km (0.067 R)
• M2: 600,785 km (0.09 R)
• M3: 1,310,178 km (0.118 R)
• M4: 1,861,446 km (0.117 R)
• M5: 2,411,817 km (0.036 R)
• M6: 2,894,868 km (0.102 R)
• M7: 3,378,369 km (0.086 R)
• M8: 4,077,140 km (0.113 R)
• M9: 4,932,391 km (0.045 R)
• M10: 5,787,493 km (0.091 R)
• M11: 6,790,696 km (0.103 R)
• M12: 7,764,279 km (0.109 R)
• M13: 8,614,444 km (0.046 R)
• M14: 9,046,632 km (0.04 R)

Planet 8 - Gas Giant

Semi-Major Axis: 2.09 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 344.3

Radius: 15

Gravity: 1.53 G

Time & Orbit

Eccentricity (e): 0.063

Orbit Range: 1.96 AU - 2.22 AU

Year: 1982 Days

Day: 8.7 Hours

Environment

Temp: -193 °C

Axial Tilt: 33.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 12,955,917 km

• M1: 188,194 km (0.058 R)
• M2: 1,520,812 km (0.098 R)
• M3: 2,034,381 km (0.102 R)
• M4: 2,501,875 km (0.101 R)
• M5: 3,215,157 km (0.114 R)
• M6: 3,924,850 km (0.115 R)
• M7: 4,718,317 km (0.088 R)
• M8: 5,466,605 km (0.105 R)
• M9: 6,292,984 km (0.106 R)
• M10: 6,947,624 km (0.09 R)
• M11: 11,661,453 km (0.091 R)
• M12: 12,278,694 km (0.113 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: 359 - 18,341 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit