🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.32 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.64 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.1

Radius: 0.4

Gravity: 0.63 G

Time & Orbit

Eccentricity (e): 0.119

Orbit Range: 0.56 AU - 0.72 AU

Year: 331 Days

Day: 35.4 Hours

Environment

Temp: -139 °C

Axial Tilt: 17.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 69,147,649 km

• M1: 9,275 km (0.085 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.74 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 183.2

Radius: 11.1

Gravity: 1.49 G

Time & Orbit

Eccentricity (e): 0.206

Orbit Range: 0.59 AU - 0.89 AU

Year: 411 Days

Day: 9.5 Hours

Environment

Temp: -138 °C

Axial Tilt: 31.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 69,147,649 km

• M1: 138,079 km (0.075 R)
• M2: 517,459 km (0.102 R)
• M3: 949,498 km (0.108 R)
• M4: 1,453,792 km (0.115 R)
• M5: 2,019,422 km (0.106 R)
• M6: 2,445,177 km (0.115 R)
• M7: 3,078,275 km (0.057 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.91 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 254.5

Radius: 14

Gravity: 1.3 G

Time & Orbit

Eccentricity (e): 0.022

Orbit Range: 0.89 AU - 0.93 AU

Year: 561 Days

Day: 10 Hours

Environment

Temp: -162 °C

Axial Tilt: 7.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 69,147,649 km

• M1: 174,282 km (0.059 R)
• M2: 696,378 km (0.081 R)
• M3: 1,439,580 km (0.119 R)
• M4: 2,221,528 km (0.11 R)
• M5: 3,145,445 km (0.042 R)
• M6: 3,586,160 km (0.046 R)
• M7: 4,260,248 km (0.052 R)
• M8: 4,845,026 km (0.03 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.81 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 700.1

Radius: 12.1

Gravity: 4.78 G

Time & Orbit

Eccentricity (e): 0.155

Orbit Range: 2.37 AU - 3.25 AU

Year: 3041 Days

Day: 6.9 Hours

Environment

Temp: -192 °C

Axial Tilt: 0.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 69,147,649 km

• M1: 150,495 km (0.091 R)
• M2: 652,546 km (0.043 R)
• M3: 1,040,902 km (0.114 R)
• M4: 1,757,177 km (0.084 R)
• M5: 2,153,013 km (0.047 R)
• M6: 2,655,213 km (0.059 R)
• M7: 4,208,936 km (0.109 R)
• M8: 4,764,692 km (0.078 R)
• M9: 6,643,492 km (0.088 R)
• M10: 7,879,170 km (0.102 R)
• M11: 8,725,894 km (0.118 R)
• M12: 10,600,505 km (0.093 R)
• M13: 11,211,912 km (0.086 R)
• M14: 11,675,067 km (0.091 R)
• M15: 12,957,719 km (0.102 R)
• M16: 13,421,173 km (0.091 R)
• M17: 15,749,365 km (0.094 R)
• M18: 20,435,967 km (0.119 R)
• M19: 21,641,426 km (0.1 R)

Planet 5 - Ice Giant

Semi-Major Axis: 8.54 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 303

Radius: 6.7

Gravity: 6.75 G

Time & Orbit

Eccentricity (e): 0.22

Orbit Range: 6.66 AU - 10.42 AU

Year: 16114 Days

Day: 15.7 Hours

Environment

Temp: -232 °C

Axial Tilt: 36.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 69,147,649 km

• M1: 83,326 km (0.105 R)
• M2: 1,725,462 km (0.102 R)
• M3: 2,232,000 km (0.118 R)
• M4: 4,529,375 km (0.086 R)
• M5: 5,089,619 km (0.104 R)
• M6: 7,008,511 km (0.088 R)
• M7: 7,252,505 km (0.117 R)
• M8: 7,930,782 km (0.089 R)
• M9: 8,558,345 km (0.109 R)
• M10: 9,760,513 km (0.033 R)
• M11: 11,402,499 km (0.1 R)
• M12: 11,683,594 km (0.115 R)
• M13: 13,593,510 km (0.109 R)
• M14: 20,390,938 km (0.119 R)
• M15: 25,263,939 km (0.048 R)
• M16: 26,914,003 km (0.085 R)
• M17: 33,771,420 km (0.077 R)
• M18: 35,293,578 km (0.118 R)
• M19: 36,860,915 km (0.118 R)
• M20: 41,310,405 km (0.102 R)
• M21: 46,247,284 km (0.063 R)
• M22: 48,268,800 km (0.089 R)

Planet 6 - Ice Giant

Semi-Major Axis: 10.32 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 448.8

Radius: 7.3

Gravity: 8.42 G

Time & Orbit

Eccentricity (e): 0.15

Orbit Range: 8.77 AU - 11.87 AU

Year: 21406 Days

Day: 18.3 Hours

Environment

Temp: -228 °C

Axial Tilt: 86.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (35)

Outer Limit: 69,147,649 km

• M1: 90,806 km (0.103 R)
• M2: 660,026 km (0.11 R)
• M3: 909,256 km (0.085 R)
• M4: 1,434,943 km (0.049 R)
• M5: 1,918,293 km (0.071 R)
• M6: 2,505,465 km (0.089 R)
• M7: 3,001,083 km (0.069 R)
• M8: 4,155,679 km (0.111 R)
• M9: 4,815,555 km (0.093 R)
• M10: 5,543,050 km (0.063 R)
• M11: 5,853,765 km (0.098 R)
• M12: 6,217,288 km (0.054 R)
• M13: 7,352,436 km (0.112 R)
• M14: 8,879,232 km (0.097 R)
• M15: 10,904,488 km (0.075 R)
• M16: 11,146,986 km (0.106 R)
• M17: 12,024,378 km (0.066 R)
• M18: 12,947,097 km (0.064 R)
• M19: 14,637,254 km (0.057 R)
• M20: 15,007,060 km (0.052 R)
• M21: 16,548,965 km (0.111 R)
• M22: 17,856,301 km (0.045 R)
• M23: 18,363,887 km (0.033 R)
• M24: 23,675,957 km (0.093 R)
• M25: 26,515,923 km (0.029 R)
• M26: 29,107,706 km (0.037 R)
• M27: 32,360,263 km (0.093 R)
• M28: 34,397,786 km (0.096 R)
• M29: 37,336,786 km (0.045 R)
• M30: 43,556,766 km (0.049 R)
• M31: 44,321,960 km (0.08 R)
• M32: 53,689,329 km (0.087 R)
• M33: 56,900,897 km (0.118 R)
• M34: 58,183,698 km (0.115 R)
• M35: 68,940,683 km (0.08 R)

Kuiper Belt

Range: 30 - 47 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 515 - 14,150 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit