🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.27 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.54 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.23

Radius: 1.78

Gravity: 1.34 G

Time & Orbit

Eccentricity (e): 0.222

Orbit Range: 0.42 AU - 0.66 AU

Year: 260 Days

Day: 29.3 Hours

Environment

Temp: -117 °C

Axial Tilt: 43.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.57 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.3

Radius: 0.62

Gravity: 0.78 G

Time & Orbit

Eccentricity (e): 0.194

Orbit Range: 0.46 AU - 0.68 AU

Year: 282 Days

Day: 35.4 Hours

Environment

Temp: -115 °C

Axial Tilt: 45.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.8 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 989.1

Radius: 14.2

Gravity: 4.91 G

Time & Orbit

Eccentricity (e): 0.123

Orbit Range: 0.7 AU - 0.9 AU

Year: 469 Days

Day: 9.1 Hours

Environment

Temp: -153 °C

Axial Tilt: 32.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 47,571,756 km

• M1: 176,525 km (0.114 R)
• M2: 633,248 km (0.109 R)
• M3: 1,159,832 km (0.083 R)
• M4: 1,624,483 km (0.091 R)
• M5: 2,116,959 km (0.028 R)
• M6: 2,699,494 km (0.051 R)
• M7: 3,552,501 km (0.059 R)
• M8: 4,382,769 km (0.043 R)
• M9: 4,828,720 km (0.106 R)
• M10: 6,765,265 km (0.074 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.98 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 695.2

Radius: 11.1

Gravity: 5.64 G

Time & Orbit

Eccentricity (e): 0.058

Orbit Range: 0.92 AU - 1.04 AU

Year: 636 Days

Day: 9 Hours

Environment

Temp: -161 °C

Axial Tilt: 29.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 47,571,756 km

• M1: 138,228 km (0.103 R)
• M2: 486,941 km (0.109 R)
• M3: 862,432 km (0.119 R)
• M4: 1,299,258 km (0.079 R)
• M5: 1,671,008 km (0.092 R)
• M6: 2,405,983 km (0.097 R)
• M7: 2,757,837 km (0.117 R)
• M8: 3,396,171 km (0.12 R)
• M9: 3,743,986 km (0.041 R)
• M10: 4,160,167 km (0.074 R)
• M11: 5,224,257 km (0.08 R)
• M12: 5,580,150 km (0.073 R)
• M13: 5,971,498 km (0.049 R)
• M14: 7,170,076 km (0.098 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.21 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 346

Radius: 10.1

Gravity: 3.39 G

Time & Orbit

Eccentricity (e): 0.115

Orbit Range: 1.07 AU - 1.35 AU

Year: 873 Days

Day: 14.9 Hours

Environment

Temp: -166 °C

Axial Tilt: 31.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 47,571,756 km

• M1: 125,662 km (0.077 R)
• M2: 442,361 km (0.059 R)
• M3: 759,209 km (0.105 R)
• M4: 1,972,897 km (0.114 R)
• M5: 2,837,273 km (0.089 R)
• M6: 3,304,916 km (0.114 R)
• M7: 3,712,870 km (0.102 R)
• M8: 4,213,723 km (0.082 R)
• M9: 4,906,960 km (0.098 R)
• M10: 6,888,832 km (0.046 R)

Asteroid Belt

Center: 2.74 AU

Composition

Type: Outer System (Icy)

A dense region of planetesimals and debris.

Boundary

Planet 6 - Gas Giant

Semi-Major Axis: 4.27 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 271.4

Radius: 11.1

Gravity: 2.2 G

Time & Orbit

Eccentricity (e): 0.162

Orbit Range: 3.58 AU - 4.96 AU

Year: 5788 Days

Day: 5.9 Hours

Environment

Temp: -223 °C

Axial Tilt: 27.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 47,571,756 km

• M1: 138,079 km (0.114 R)
• M2: 495,618 km (0.114 R)
• M3: 862,432 km (0.106 R)
• M4: 1,349,672 km (0.085 R)
• M5: 2,598,515 km (0.099 R)
• M6: 4,205,346 km (0.09 R)
• M7: 5,389,712 km (0.118 R)
• M8: 6,422,536 km (0.114 R)
• M9: 6,970,363 km (0.106 R)
• M10: 7,385,348 km (0.09 R)
• M11: 8,370,898 km (0.104 R)
• M12: 8,766,734 km (0.119 R)
• M13: 10,070,629 km (0.069 R)
• M14: 10,601,851 km (0.065 R)
• M15: 11,809,705 km (0.115 R)
• M16: 12,400,766 km (0.112 R)
• M17: 13,011,424 km (0.11 R)
• M18: 16,259,194 km (0.061 R)
• M19: 16,763,638 km (0.112 R)
• M20: 17,278,404 km (0.094 R)
• M21: 18,040,456 km (0.1 R)
• M22: 18,581,103 km (0.101 R)
• M23: 21,851,462 km (0.048 R)
• M24: 23,232,549 km (0.102 R)

Planet 7 - Ice Giant

Semi-Major Axis: 9.74 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 168.4

Radius: 3.1

Gravity: 17.52 G

Time & Orbit

Eccentricity (e): 0.15

Orbit Range: 8.28 AU - 11.2 AU

Year: 19941 Days

Day: 16 Hours

Environment

Temp: -232 °C

Axial Tilt: 39.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 47,571,756 km

• M1: 39,195 km (0.117 R)
• M2: 720,613 km (0.078 R)
• M3: 1,185,862 km (0.036 R)
• M4: 2,059,065 km (0.081 R)
• M5: 4,457,269 km (0.104 R)
• M6: 5,528,689 km (0.119 R)
• M7: 5,630,714 km (0.059 R)
• M8: 8,887,759 km (0.044 R)
• M9: 9,950,502 km (0.036 R)
• M10: 11,257,838 km (0.079 R)
• M11: 11,867,599 km (0.107 R)
• M12: 13,457,226 km (0.091 R)
• M13: 13,954,190 km (0.07 R)
• M14: 15,316,578 km (0.111 R)
• M15: 18,835,419 km (0.106 R)
• M16: 22,682,328 km (0.067 R)
• M17: 25,960,167 km (0.065 R)
• M18: 32,431,173 km (0.057 R)
• M19: 34,230,237 km (0.079 R)
• M20: 39,267,347 km (0.034 R)
• M21: 42,224,448 km (0.093 R)

Kuiper Belt

Range: 30 - 57 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 235 - 14,068 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit