🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.3 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.59 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.92

Radius: 0.97

Gravity: 0.98 G

Time & Orbit

Eccentricity (e): 0.119

Orbit Range: 0.52 AU - 0.66 AU

Year: 293 Days

Day: 35.2 Hours

Environment

Temp: -133 °C

Axial Tilt: 10.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.82 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 795.1

Radius: 12.3

Gravity: 5.26 G

Time & Orbit

Eccentricity (e): 0.115

Orbit Range: 0.73 AU - 0.91 AU

Year: 479 Days

Day: 5.8 Hours

Environment

Temp: -147 °C

Axial Tilt: 127.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 42,129,199 km

• M1: 153,039 km (0.081 R)
• M2: 607,218 km (0.1 R)
• M3: 1,119,890 km (0.107 R)
• M4: 1,731,147 km (0.108 R)
• M5: 2,268,203 km (0.036 R)
• M6: 2,849,540 km (0.095 R)
• M7: 3,294,893 km (0.1 R)
• M8: 4,549,122 km (0.12 R)
• M9: 5,161,426 km (0.114 R)
• M10: 6,007,850 km (0.113 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.05 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 473.1

Radius: 14.8

Gravity: 2.16 G

Time & Orbit

Eccentricity (e): 0.109

Orbit Range: 0.94 AU - 1.16 AU

Year: 695 Days

Day: 6.2 Hours

Environment

Temp: -156 °C

Axial Tilt: 41.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 42,129,199 km

• M1: 184,005 km (0.067 R)
• M2: 1,014,872 km (0.116 R)
• M3: 1,517,222 km (0.076 R)
• M4: 2,108,732 km (0.09 R)
• M5: 3,068,552 km (0.083 R)
• M6: 3,545,769 km (0.12 R)
• M7: 4,378,131 km (0.115 R)
• M8: 5,202,116 km (0.052 R)
• M9: 6,511,547 km (0.062 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.05 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 856.4

Radius: 8.3

Gravity: 12.43 G

Time & Orbit

Eccentricity (e): 0.221

Orbit Range: 0.82 AU - 1.28 AU

Year: 695 Days

Day: 10 Hours

Environment

Temp: -165 °C

Axial Tilt: 39.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 42,129,199 km

• M1: 103,223 km (0.049 R)
• M2: 424,559 km (0.112 R)
• M3: 710,739 km (0.057 R)
• M4: 1,009,935 km (0.029 R)
• M5: 1,453,493 km (0.096 R)
• M6: 1,820,756 km (0.115 R)
• M7: 2,109,031 km (0.066 R)
• M8: 2,923,741 km (0.089 R)
• M9: 3,295,043 km (0.116 R)
• M10: 3,597,530 km (0.065 R)
• M11: 5,380,138 km (0.067 R)
• M12: 6,080,256 km (0.111 R)
• M13: 6,537,277 km (0.094 R)
• M14: 6,950,167 km (0.074 R)
• M15: 7,924,648 km (0.036 R)
• M16: 8,219,206 km (0.104 R)
• M17: 8,700,463 km (0.089 R)

Asteroid Belt

Center: 1.81 AU

Composition

Type: Outer System (Icy)

A dense region of planetesimals and debris.

Boundary

Planet 5 - Gas Giant

Semi-Major Axis: 2.57 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 87.2

Radius: 10.3

Gravity: 0.82 G

Time & Orbit

Eccentricity (e): 0.119

Orbit Range: 2.26 AU - 2.88 AU

Year: 2660 Days

Day: 8.6 Hours

Environment

Temp: -202 °C

Axial Tilt: 2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 42,129,199 km

• M1: 131,945 km (0.101 R)
• M2: 587,471 km (0.057 R)
• M3: 1,196,633 km (0.083 R)
• M4: 1,913,357 km (0.118 R)
• M5: 2,319,216 km (0.115 R)
• M6: 3,334,387 km (0.039 R)
• M7: 3,757,151 km (0.099 R)
• M8: 4,117,681 km (0.059 R)
• M9: 4,467,142 km (0.085 R)
• M10: 5,656,445 km (0.114 R)
• M11: 6,131,867 km (0.097 R)
• M12: 6,500,177 km (0.12 R)
• M13: 7,305,462 km (0.1 R)
• M14: 8,150,092 km (0.077 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.79 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 474.4

Radius: 12.2

Gravity: 3.19 G

Time & Orbit

Eccentricity (e): 0.016

Orbit Range: 2.75 AU - 2.83 AU

Year: 3009 Days

Day: 11.6 Hours

Environment

Temp: -210 °C

Axial Tilt: 8.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 42,129,199 km

• M1: 151,991 km (0.086 R)
• M2: 575,353 km (0.058 R)
• M3: 961,615 km (0.093 R)
• M4: 1,521,560 km (0.11 R)
• M5: 2,401,644 km (0.091 R)
• M6: 3,060,772 km (0.101 R)
• M7: 3,837,634 km (0.05 R)
• M8: 4,232,273 km (0.094 R)
• M9: 5,103,980 km (0.098 R)
• M10: 5,558,159 km (0.089 R)
• M11: 6,223,720 km (0.05 R)
• M12: 7,622,161 km (0.089 R)
• M13: 8,089,654 km (0.111 R)
• M14: 9,082,087 km (0.04 R)
• M15: 10,191,205 km (0.102 R)
• M16: 11,388,587 km (0.096 R)
• M17: 12,634,587 km (0.089 R)
• M18: 14,862,100 km (0.116 R)
• M19: 15,643,001 km (0.067 R)
• M20: 17,180,717 km (0.106 R)
• M21: 18,426,269 km (0.073 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.02 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 198.5

Radius: 14.9

Gravity: 0.89 G

Time & Orbit

Eccentricity (e): 0.116

Orbit Range: 2.67 AU - 3.37 AU

Year: 3389 Days

Day: 6.1 Hours

Environment

Temp: -209 °C

Axial Tilt: 152.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 42,129,199 km

• M1: 185,352 km (0.113 R)
• M2: 913,893 km (0.11 R)
• M3: 1,667,867 km (0.043 R)
• M4: 2,182,184 km (0.077 R)
• M5: 3,659,762 km (0.113 R)
• M6: 4,807,627 km (0.031 R)
• M7: 6,871,778 km (0.039 R)
• M8: 8,738,311 km (0.054 R)
• M9: 10,077,810 km (0.113 R)
• M10: 11,068,746 km (0.084 R)
• M11: 12,162,606 km (0.096 R)
• M12: 13,410,402 km (0.098 R)
• M13: 15,144,690 km (0.07 R)

Planet 8 - Ice Giant

Semi-Major Axis: 6.47 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 204.3

Radius: 7.4

Gravity: 3.73 G

Time & Orbit

Eccentricity (e): 0.11

Orbit Range: 5.76 AU - 7.18 AU

Year: 10626 Days

Day: 24.1 Hours

Environment

Temp: -231 °C

Axial Tilt: 8.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 42,129,199 km

• M1: 92,302 km (0.115 R)
• M2: 563,386 km (0.108 R)
• M3: 806,482 km (0.112 R)
• M4: 1,223,112 km (0.082 R)
• M5: 1,554,920 km (0.036 R)
• M6: 1,902,436 km (0.049 R)
• M7: 2,645,040 km (0.099 R)
• M8: 3,224,582 km (0.071 R)
• M9: 4,299,144 km (0.107 R)
• M10: 5,416,490 km (0.116 R)
• M11: 5,901,187 km (0.085 R)
• M12: 8,850,958 km (0.077 R)
• M13: 13,677,883 km (0.07 R)
• M14: 14,922,388 km (0.088 R)
• M15: 15,393,172 km (0.108 R)
• M16: 17,375,942 km (0.062 R)
• M17: 18,095,059 km (0.115 R)
• M18: 19,383,845 km (0.056 R)
• M19: 22,524,203 km (0.099 R)
• M20: 23,065,748 km (0.028 R)
• M21: 23,695,106 km (0.081 R)
• M22: 30,163,419 km (0.09 R)
• M23: 32,262,875 km (0.07 R)
• M24: 33,248,576 km (0.113 R)

Planet 9 - Ice Giant

Semi-Major Axis: 9.11 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 534.2

Radius: 7.7

Gravity: 9.01 G

Time & Orbit

Eccentricity (e): 0.157

Orbit Range: 7.68 AU - 10.54 AU

Year: 17754 Days

Day: 15.2 Hours

Environment

Temp: -224 °C

Axial Tilt: 2.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 42,129,199 km

• M1: 95,743 km (0.055 R)
• M2: 472,430 km (0.077 R)
• M3: 720,015 km (0.111 R)
• M4: 1,468,602 km (0.108 R)
• M5: 3,897,922 km (0.092 R)
• M6: 4,984,601 km (0.116 R)
• M7: 6,383,042 km (0.066 R)
• M8: 6,632,272 km (0.085 R)
• M9: 12,439,811 km (0.112 R)
• M10: 13,429,550 km (0.085 R)
• M11: 17,028,576 km (0.099 R)
• M12: 31,822,160 km (0.085 R)
• M13: 36,896,220 km (0.062 R)
• M14: 38,517,562 km (0.111 R)
• M15: 43,964,570 km (0.11 R)
• M16: 44,566,253 km (0.069 R)
• M17: 64,109,868 km (0.079 R)

Planet 10 - Ice Giant

Semi-Major Axis: 9.26 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 140.5

Radius: 7

Gravity: 2.87 G

Time & Orbit

Eccentricity (e): 0.166

Orbit Range: 7.72 AU - 10.8 AU

Year: 18194 Days

Day: 22.6 Hours

Environment

Temp: -222 °C

Axial Tilt: 6.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 42,129,199 km

• M1: 87,066 km (0.098 R)
• M2: 362,027 km (0.073 R)
• M3: 598,541 km (0.11 R)
• M4: 942,467 km (0.087 R)
• M5: 1,188,405 km (0.057 R)
• M6: 1,936,395 km (0.11 R)
• M7: 2,182,334 km (0.037 R)
• M8: 2,638,906 km (0.049 R)
• M9: 3,644,055 km (0.09 R)
• M10: 5,696,837 km (0.06 R)
• M11: 9,676,888 km (0.098 R)
• M12: 10,058,512 km (0.082 R)
• M13: 10,801,116 km (0.117 R)
• M14: 11,368,541 km (0.067 R)
• M15: 13,190,194 km (0.117 R)
• M16: 18,108,822 km (0.104 R)
• M17: 18,761,967 km (0.101 R)
• M18: 20,192,122 km (0.081 R)
• M19: 23,780,377 km (0.111 R)
• M20: 26,088,821 km (0.104 R)
• M21: 26,456,832 km (0.102 R)
• M22: 27,015,281 km (0.086 R)
• M23: 33,253,662 km (0.069 R)
• M24: 37,051,204 km (0.093 R)

Kuiper Belt

Range: 30 - 48 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 265 - 15,727 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit