🌌 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: 0.53 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.48

Radius: 1.17

Gravity: 1.08 G

Time & Orbit

Eccentricity (e): 0.055

Orbit Range: 0.5 AU - 0.56 AU

Year: 245 Days

Day: 31.5 Hours

Environment

Temp: -122 °C

Axial Tilt: 8.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.92 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 235.9

Radius: 13.3

Gravity: 1.33 G

Time & Orbit

Eccentricity (e): 0.069

Orbit Range: 0.86 AU - 0.98 AU

Year: 561 Days

Day: 6.6 Hours

Environment

Temp: -157 °C

Axial Tilt: 11.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 62,652,682 km

• M1: 165,455 km (0.092 R)
• M2: 857,944 km (0.115 R)
• M3: 1,327,232 km (0.103 R)
• M4: 1,755,980 km (0.095 R)
• M5: 2,363,347 km (0.083 R)
• M6: 2,985,824 km (0.064 R)
• M7: 3,554,146 km (0.117 R)
• M8: 4,155,829 km (0.088 R)
• M9: 4,589,513 km (0.092 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.02 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 861.7

Radius: 14.4

Gravity: 4.16 G

Time & Orbit

Eccentricity (e): 0.161

Orbit Range: 0.86 AU - 1.18 AU

Year: 655 Days

Day: 10.6 Hours

Environment

Temp: -154 °C

Axial Tilt: 14.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 62,652,682 km

• M1: 179,069 km (0.085 R)
• M2: 815,159 km (0.042 R)
• M3: 1,349,522 km (0.069 R)
• M4: 1,965,417 km (0.083 R)
• M5: 2,631,875 km (0.047 R)
• M6: 3,174,317 km (0.096 R)
• M7: 4,282,538 km (0.069 R)
• M8: 4,935,234 km (0.1 R)
• M9: 5,635,053 km (0.115 R)
• M10: 6,217,886 km (0.104 R)
• M11: 6,840,662 km (0.109 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.45 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 605.9

Radius: 9.2

Gravity: 7.16 G

Time & Orbit

Eccentricity (e): 0.1

Orbit Range: 1.31 AU - 1.6 AU

Year: 1110 Days

Day: 6.3 Hours

Environment

Temp: -169 °C

Axial Tilt: 11.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 62,652,682 km

• M1: 114,442 km (0.109 R)
• M2: 538,702 km (0.066 R)
• M3: 904,469 km (0.067 R)
• M4: 1,412,952 km (0.105 R)
• M5: 1,724,415 km (0.115 R)
• M6: 2,165,728 km (0.11 R)
• M7: 2,524,464 km (0.087 R)
• M8: 3,434,917 km (0.074 R)
• M9: 3,893,285 km (0.096 R)
• M10: 4,639,180 km (0.104 R)
• M11: 5,008,387 km (0.093 R)
• M12: 5,785,099 km (0.059 R)
• M13: 6,257,380 km (0.101 R)
• M14: 7,753,508 km (0.078 R)
• M15: 8,089,654 km (0.103 R)
• M16: 9,015,366 km (0.117 R)
• M17: 9,591,916 km (0.051 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.1 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 865.8

Radius: 13.8

Gravity: 4.55 G

Time & Orbit

Eccentricity (e): 0.127

Orbit Range: 2.71 AU - 3.49 AU

Year: 3470 Days

Day: 12.2 Hours

Environment

Temp: -208 °C

Axial Tilt: 23.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 62,652,682 km

• M1: 174,132 km (0.102 R)
• M2: 706,102 km (0.089 R)
• M3: 1,261,559 km (0.063 R)
• M4: 2,055,026 km (0.118 R)
• M5: 3,292,500 km (0.083 R)
• M6: 4,219,258 km (0.1 R)
• M7: 4,979,365 km (0.116 R)
• M8: 5,419,332 km (0.084 R)
• M9: 6,467,864 km (0.117 R)
• M10: 7,056,831 km (0.116 R)
• M11: 8,094,741 km (0.096 R)
• M12: 9,003,847 km (0.111 R)
• M13: 9,660,283 km (0.088 R)
• M14: 10,265,705 km (0.1 R)
• M15: 10,810,840 km (0.106 R)
• M16: 11,375,272 km (0.06 R)
• M17: 12,005,080 km (0.11 R)
• M18: 13,138,732 km (0.033 R)
• M19: 13,731,888 km (0.078 R)
• M20: 14,291,085 km (0.09 R)
• M21: 16,228,676 km (0.105 R)
• M22: 17,377,887 km (0.1 R)
• M23: 18,335,912 km (0.08 R)
• M24: 24,838,183 km (0.071 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.49 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 928.1

Radius: 14.6

Gravity: 4.35 G

Time & Orbit

Eccentricity (e): 0.203

Orbit Range: 2.78 AU - 4.2 AU

Year: 4145 Days

Day: 8.4 Hours

Environment

Temp: -217 °C

Axial Tilt: 7.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 62,652,682 km

• M1: 183,706 km (0.096 R)
• M2: 726,896 km (0.086 R)
• M3: 1,678,039 km (0.099 R)
• M4: 2,352,875 km (0.117 R)
• M5: 3,463,340 km (0.105 R)
• M6: 4,207,889 km (0.093 R)
• M7: 10,759,677 km (0.102 R)
• M8: 11,629,290 km (0.106 R)
• M9: 13,353,555 km (0.033 R)
• M10: 16,938,817 km (0.081 R)
• M11: 19,413,615 km (0.099 R)
• M12: 22,558,761 km (0.095 R)
• M13: 23,678,650 km (0.089 R)
• M14: 24,601,071 km (0.111 R)
• M15: 26,191,296 km (0.095 R)
• M16: 28,018,933 km (0.119 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.89 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 953.2

Radius: 14

Gravity: 4.86 G

Time & Orbit

Eccentricity (e): 0.126

Orbit Range: 3.4 AU - 4.38 AU

Year: 4878 Days

Day: 12.1 Hours

Environment

Temp: -208 °C

Axial Tilt: 31 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 62,652,682 km

• M1: 174,132 km (0.11 R)
• M2: 852,708 km (0.027 R)
• M3: 1,738,926 km (0.108 R)
• M4: 2,301,114 km (0.067 R)
• M5: 3,022,625 km (0.096 R)
• M6: 4,297,498 km (0.058 R)
• M7: 5,225,454 km (0.108 R)
• M8: 6,251,097 km (0.085 R)
• M9: 7,087,798 km (0.026 R)
• M10: 9,443,964 km (0.083 R)
• M11: 10,274,232 km (0.09 R)
• M12: 10,870,080 km (0.081 R)
• M13: 12,538,097 km (0.116 R)
• M14: 14,314,571 km (0.1 R)
• M15: 15,117,014 km (0.117 R)
• M16: 16,500,047 km (0.105 R)
• M17: 17,640,132 km (0.035 R)
• M18: 18,163,425 km (0.12 R)
• M19: 18,899,896 km (0.112 R)
• M20: 19,586,700 km (0.07 R)
• M21: 20,361,168 km (0.073 R)
• M22: 25,114,640 km (0.108 R)
• M23: 29,817,848 km (0.086 R)

Planet 8 - Ice Giant

Semi-Major Axis: 8.27 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 669

Radius: 5.9

Gravity: 19.22 G

Time & Orbit

Eccentricity (e): 0.003

Orbit Range: 8.25 AU - 8.29 AU

Year: 15121 Days

Day: 15.8 Hours

Environment

Temp: -230 °C

Axial Tilt: 15 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (35)

Outer Limit: 62,652,682 km

• M1: 74,949 km (0.063 R)
• M2: 280,346 km (0.12 R)
• M3: 1,123,330 km (0.06 R)
• M4: 1,615,507 km (0.088 R)
• M5: 2,733,602 km (0.102 R)
• M6: 3,166,688 km (0.118 R)
• M7: 3,480,245 km (0.094 R)
• M8: 4,018,648 km (0.055 R)
• M9: 4,449,789 km (0.112 R)
• M10: 6,950,915 km (0.105 R)
• M11: 8,085,017 km (0.119 R)
• M12: 9,077,150 km (0.077 R)
• M13: 10,147,972 km (0.066 R)
• M14: 10,887,583 km (0.061 R)
• M15: 13,658,136 km (0.118 R)
• M16: 14,772,341 km (0.101 R)
• M17: 15,278,281 km (0.082 R)
• M18: 15,795,740 km (0.086 R)
• M19: 16,021,034 km (0.1 R)
• M20: 18,228,800 km (0.111 R)
• M21: 19,750,360 km (0.073 R)
• M22: 21,538,054 km (0.075 R)
• M23: 22,851,823 km (0.12 R)
• M24: 28,642,906 km (0.1 R)
• M25: 29,203,000 km (0.093 R)
• M26: 30,345,330 km (0.119 R)
• M27: 30,577,206 km (0.111 R)
• M28: 34,704,013 km (0.052 R)
• M29: 38,504,846 km (0.027 R)
• M30: 39,049,981 km (0.087 R)
• M31: 42,574,208 km (0.12 R)
• M32: 50,409,546 km (0.034 R)
• M33: 57,541,774 km (0.115 R)
• M34: 60,794,031 km (0.093 R)
• M35: 61,347,693 km (0.083 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: 471 - 15,482 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit