🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.37 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Gas Giant

Semi-Major Axis: 0.74 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 519.2

Radius: 8.7

Gravity: 6.86 G

Time & Orbit

Eccentricity (e): 0.167

Orbit Range: 0.62 AU - 0.86 AU

Year: 439 Days

Day: 12.3 Hours

Environment

Temp: -164 °C

Axial Tilt: 28.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 44,447,146 km

• M1: 108,159 km (0.057 R)
• M2: 535,261 km (0.097 R)
• M3: 924,964 km (0.068 R)
• M4: 1,214,884 km (0.073 R)
• M5: 1,526,197 km (0.038 R)
• M6: 1,929,813 km (0.102 R)
• M7: 2,208,813 km (0.077 R)
• M8: 2,591,035 km (0.113 R)
• M9: 3,247,022 km (0.089 R)
• M10: 3,718,255 km (0.1 R)
• M11: 4,916,235 km (0.107 R)
• M12: 5,189,999 km (0.11 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.86 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 714.5

Radius: 10.1

Gravity: 7 G

Time & Orbit

Eccentricity (e): 0.241

Orbit Range: 0.65 AU - 1.07 AU

Year: 551 Days

Day: 13.5 Hours

Environment

Temp: -174 °C

Axial Tilt: 43.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 44,447,146 km

• M1: 126,111 km (0.054 R)
• M2: 467,194 km (0.114 R)
• M3: 938,427 km (0.08 R)
• M4: 1,371,812 km (0.089 R)
• M5: 2,120,999 km (0.079 R)
• M6: 2,588,043 km (0.111 R)
• M7: 3,480,544 km (0.118 R)
• M8: 5,128,813 km (0.112 R)
• M9: 5,773,131 km (0.092 R)
• M10: 6,219,232 km (0.098 R)
• M11: 6,588,589 km (0.108 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.24 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 660.1

Radius: 10.4

Gravity: 6.1 G

Time & Orbit

Eccentricity (e): 0.082

Orbit Range: 1.14 AU - 1.34 AU

Year: 953 Days

Day: 8.2 Hours

Environment

Temp: -174 °C

Axial Tilt: 45.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 44,447,146 km

• M1: 129,402 km (0.116 R)
• M2: 473,328 km (0.108 R)
• M3: 801,246 km (0.085 R)
• M4: 1,304,643 km (0.094 R)
• M5: 1,664,576 km (0.081 R)
• M6: 1,992,494 km (0.095 R)
• M7: 2,331,333 km (0.103 R)
• M8: 2,806,755 km (0.117 R)
• M9: 3,181,348 km (0.082 R)
• M10: 3,560,130 km (0.051 R)
• M11: 4,580,238 km (0.113 R)
• M12: 4,936,131 km (0.117 R)
• M13: 5,465,558 km (0.062 R)
• M14: 5,825,640 km (0.059 R)
• M15: 6,705,575 km (0.093 R)
• M16: 8,488,183 km (0.101 R)
• M17: 8,890,452 km (0.103 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.8 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 955.9

Radius: 14.1

Gravity: 4.81 G

Time & Orbit

Eccentricity (e): 0.02

Orbit Range: 1.76 AU - 1.84 AU

Year: 1667 Days

Day: 12.3 Hours

Environment

Temp: -204 °C

Axial Tilt: 25.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 44,447,146 km

• M1: 176,825 km (0.036 R)
• M2: 681,717 km (0.115 R)
• M3: 1,134,700 km (0.091 R)
• M4: 1,580,053 km (0.047 R)
• M5: 2,028,996 km (0.073 R)
• M6: 2,471,207 km (0.085 R)
• M7: 3,100,715 km (0.094 R)
• M8: 3,764,630 km (0.078 R)
• M9: 4,501,849 km (0.103 R)
• M10: 5,002,104 km (0.075 R)
• M11: 5,470,345 km (0.075 R)
• M12: 6,165,377 km (0.07 R)
• M13: 6,678,647 km (0.077 R)
• M14: 7,220,192 km (0.097 R)
• M15: 8,361,474 km (0.08 R)
• M16: 11,337,125 km (0.106 R)
• M17: 12,229,177 km (0.074 R)
• M18: 13,504,948 km (0.116 R)
• M19: 14,686,921 km (0.089 R)
• M20: 15,936,661 km (0.085 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.82 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 133.5

Radius: 14.5

Gravity: 0.63 G

Time & Orbit

Eccentricity (e): 0.25

Orbit Range: 2.12 AU - 3.53 AU

Year: 3269 Days

Day: 13.6 Hours

Environment

Temp: -205 °C

Axial Tilt: 15.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 44,447,146 km

• M1: 180,714 km (0.095 R)
• M2: 723,754 km (0.061 R)
• M3: 1,258,417 km (0.104 R)
• M4: 2,653,118 km (0.044 R)
• M5: 3,417,264 km (0.08 R)
• M6: 4,453,229 km (0.063 R)
• M7: 7,725,533 km (0.067 R)
• M8: 11,367,344 km (0.082 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.84 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 487.2

Radius: 11.3

Gravity: 3.82 G

Time & Orbit

Eccentricity (e): 0.027

Orbit Range: 2.76 AU - 2.92 AU

Year: 3304 Days

Day: 6.3 Hours

Environment

Temp: -203 °C

Axial Tilt: 48 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 44,447,146 km

• M1: 143,016 km (0.115 R)
• M2: 705,354 km (0.076 R)
• M3: 1,228,647 km (0.025 R)
• M4: 1,634,207 km (0.057 R)
• M5: 2,078,662 km (0.088 R)
• M6: 2,946,629 km (0.093 R)
• M7: 3,980,949 km (0.082 R)
• M8: 7,408,535 km (0.085 R)
• M9: 8,673,086 km (0.047 R)
• M10: 11,173,914 km (0.085 R)
• M11: 11,626,148 km (0.11 R)
• M12: 14,504,262 km (0.098 R)
• M13: 16,685,847 km (0.115 R)
• M14: 17,386,414 km (0.117 R)
• M15: 20,325,563 km (0.084 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.04 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 804.9

Radius: 11.5

Gravity: 6.09 G

Time & Orbit

Eccentricity (e): 0.234

Orbit Range: 2.33 AU - 3.75 AU

Year: 3659 Days

Day: 6.2 Hours

Environment

Temp: -205 °C

Axial Tilt: 25.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 44,447,146 km

• M1: 143,016 km (0.111 R)
• M2: 611,107 km (0.082 R)
• M3: 994,078 km (0.096 R)
• M4: 1,510,789 km (0.091 R)
• M5: 2,008,800 km (0.065 R)
• M6: 2,503,371 km (0.083 R)
• M7: 3,616,828 km (0.086 R)
• M8: 4,149,845 km (0.041 R)
• M9: 4,734,773 km (0.116 R)
• M10: 5,111,759 km (0.073 R)
• M11: 5,481,565 km (0.071 R)
• M12: 6,099,105 km (0.087 R)
• M13: 7,540,630 km (0.048 R)
• M14: 8,706,596 km (0.053 R)
• M15: 9,827,383 km (0.112 R)
• M16: 10,194,048 km (0.08 R)
• M17: 12,637,729 km (0.101 R)
• M18: 14,123,685 km (0.098 R)
• M19: 14,962,330 km (0.083 R)
• M20: 18,099,846 km (0.082 R)
• M21: 21,310,815 km (0.074 R)
• M22: 22,766,253 km (0.112 R)
• M23: 25,261,396 km (0.048 R)
• M24: 25,874,149 km (0.052 R)

Planet 8 - Ice Giant

Semi-Major Axis: 7.42 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 280.6

Radius: 3.3

Gravity: 25.77 G

Time & Orbit

Eccentricity (e): 0.118

Orbit Range: 6.54 AU - 8.3 AU

Year: 13951 Days

Day: 22.5 Hours

Environment

Temp: -237 °C

Axial Tilt: 8.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 44,447,146 km

• M1: 53,855 km (0.044 R)
• M2: 157,676 km (0.078 R)
• M3: 3,901,662 km (0.079 R)
• M4: 4,505,888 km (0.095 R)
• M5: 7,150,629 km (0.085 R)
• M6: 9,972,344 km (0.089 R)
• M7: 10,882,348 km (0.052 R)
• M8: 11,357,470 km (0.106 R)
• M9: 13,758,815 km (0.083 R)
• M10: 17,889,961 km (0.114 R)
• M11: 18,476,683 km (0.04 R)
• M12: 23,292,388 km (0.055 R)
• M13: 24,794,800 km (0.078 R)
• M14: 29,383,565 km (0.097 R)
• M15: 29,687,847 km (0.074 R)
• M16: 33,284,030 km (0.089 R)
• M17: 41,835,643 km (0.105 R)
• M18: 44,181,188 km (0.108 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: 222 - 13,369 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit