🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.33 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.66 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.91

Radius: 1.3

Gravity: 1.13 G

Time & Orbit

Eccentricity (e): 0.223

Orbit Range: 0.51 AU - 0.81 AU

Year: 341 Days

Day: 30.6 Hours

Environment

Temp: -133 °C

Axial Tilt: 14.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.89 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 841.4

Radius: 8.6

Gravity: 11.38 G

Time & Orbit

Eccentricity (e): 0.133

Orbit Range: 0.77 AU - 1.01 AU

Year: 534 Days

Day: 5.4 Hours

Environment

Temp: -150 °C

Axial Tilt: 37.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 48,021,638 km

• M1: 106,962 km (0.117 R)
• M2: 381,475 km (0.069 R)
• M3: 669,151 km (0.098 R)
• M4: 955,781 km (0.042 R)
• M5: 1,346,231 km (0.115 R)
• M6: 2,085,394 km (0.057 R)
• M7: 2,503,969 km (0.052 R)
• M8: 2,817,227 km (0.063 R)
• M9: 3,108,195 km (0.092 R)
• M10: 3,575,838 km (0.055 R)
• M11: 4,075,345 km (0.086 R)
• M12: 4,357,337 km (0.103 R)
• M13: 4,960,665 km (0.113 R)
• M14: 5,949,807 km (0.104 R)
• M15: 7,043,965 km (0.102 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.99 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 402.3

Radius: 13.9

Gravity: 2.08 G

Time & Orbit

Eccentricity (e): 0.169

Orbit Range: 0.82 AU - 1.16 AU

Year: 626 Days

Day: 11.7 Hours

Environment

Temp: -160 °C

Axial Tilt: 21.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 48,021,638 km

• M1: 172,935 km (0.056 R)
• M2: 737,667 km (0.114 R)
• M3: 1,219,821 km (0.088 R)
• M4: 1,935,198 km (0.118 R)
• M5: 2,749,908 km (0.057 R)
• M6: 3,266,918 km (0.09 R)
• M7: 3,757,749 km (0.052 R)
• M8: 4,269,822 km (0.114 R)
• M9: 5,222,312 km (0.054 R)
• M10: 5,950,704 km (0.052 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.57 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 921.2

Radius: 11.3

Gravity: 7.21 G

Time & Orbit

Eccentricity (e): 0.193

Orbit Range: 1.27 AU - 1.87 AU

Year: 1251 Days

Day: 13.2 Hours

Environment

Temp: -183 °C

Axial Tilt: 49.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 48,021,638 km

• M1: 140,622 km (0.11 R)
• M2: 508,334 km (0.042 R)
• M3: 1,218,175 km (0.036 R)
• M4: 2,179,192 km (0.106 R)
• M5: 2,603,601 km (0.109 R)
• M6: 3,524,526 km (0.118 R)
• M7: 3,955,966 km (0.07 R)
• M8: 4,554,507 km (0.079 R)
• M9: 5,445,662 km (0.088 R)
• M10: 6,944,632 km (0.076 R)
• M11: 7,332,689 km (0.1 R)
• M12: 8,732,028 km (0.065 R)
• M13: 9,123,376 km (0.088 R)
• M14: 10,603,347 km (0.101 R)
• M15: 11,119,011 km (0.1 R)
• M16: 11,796,091 km (0.114 R)
• M17: 12,312,354 km (0.099 R)
• M18: 13,232,530 km (0.094 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.47 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 992

Radius: 13.1

Gravity: 5.78 G

Time & Orbit

Eccentricity (e): 0.092

Orbit Range: 2.24 AU - 2.7 AU

Year: 2468 Days

Day: 9.8 Hours

Environment

Temp: -194 °C

Axial Tilt: 44.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 48,021,638 km

• M1: 163,062 km (0.083 R)
• M2: 668,702 km (0.08 R)
• M3: 1,458,130 km (0.117 R)
• M4: 1,893,909 km (0.073 R)
• M5: 2,715,650 km (0.081 R)
• M6: 3,534,399 km (0.069 R)
• M7: 4,022,836 km (0.118 R)
• M8: 4,578,592 km (0.091 R)
• M9: 5,258,664 km (0.119 R)
• M10: 6,005,158 km (0.117 R)
• M11: 7,058,925 km (0.1 R)
• M12: 8,400,519 km (0.111 R)
• M13: 9,643,079 km (0.12 R)
• M14: 10,802,761 km (0.119 R)
• M15: 11,250,508 km (0.061 R)
• M16: 11,923,997 km (0.084 R)
• M17: 14,155,100 km (0.107 R)
• M18: 14,593,272 km (0.106 R)
• M19: 15,191,813 km (0.119 R)
• M20: 16,437,814 km (0.1 R)
• M21: 17,140,625 km (0.092 R)
• M22: 19,489,162 km (0.087 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.15 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 735.8

Radius: 9.4

Gravity: 8.33 G

Time & Orbit

Eccentricity (e): 0.178

Orbit Range: 2.59 AU - 3.71 AU

Year: 3555 Days

Day: 12.7 Hours

Environment

Temp: -212 °C

Axial Tilt: 4.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 48,021,638 km

• M1: 116,986 km (0.041 R)
• M2: 537,954 km (0.105 R)
• M3: 847,322 km (0.049 R)
• M4: 1,204,562 km (0.111 R)
• M5: 1,639,293 km (0.069 R)
• M6: 3,163,097 km (0.086 R)
• M7: 3,504,779 km (0.067 R)
• M8: 3,892,237 km (0.097 R)
• M9: 4,195,771 km (0.112 R)
• M10: 4,705,152 km (0.114 R)
• M11: 5,988,104 km (0.065 R)
• M12: 8,276,203 km (0.101 R)
• M13: 8,707,494 km (0.095 R)
• M14: 9,078,347 km (0.054 R)
• M15: 9,851,469 km (0.093 R)
• M16: 10,501,172 km (0.073 R)
• M17: 10,794,234 km (0.113 R)
• M18: 12,296,496 km (0.086 R)
• M19: 12,763,690 km (0.066 R)
• M20: 18,530,838 km (0.029 R)
• M21: 21,269,676 km (0.106 R)
• M22: 22,216,630 km (0.114 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.71 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 674.6

Radius: 14.1

Gravity: 3.39 G

Time & Orbit

Eccentricity (e): 0.076

Orbit Range: 4.35 AU - 5.07 AU

Year: 6499 Days

Day: 7.5 Hours

Environment

Temp: -220 °C

Axial Tilt: 31 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 48,021,638 km

• M1: 177,573 km (0.112 R)
• M2: 711,936 km (0.059 R)
• M3: 2,239,181 km (0.029 R)
• M4: 2,757,238 km (0.109 R)
• M5: 3,441,649 km (0.107 R)
• M6: 3,967,336 km (0.08 R)
• M7: 6,495,689 km (0.078 R)
• M8: 7,340,468 km (0.061 R)
• M9: 10,741,277 km (0.098 R)
• M10: 11,371,084 km (0.102 R)
• M11: 11,923,249 km (0.073 R)
• M12: 13,135,890 km (0.072 R)
• M13: 14,662,536 km (0.066 R)
• M14: 16,557,792 km (0.047 R)
• M15: 18,958,239 km (0.099 R)
• M16: 19,521,625 km (0.08 R)
• M17: 20,314,643 km (0.098 R)
• M18: 20,756,256 km (0.066 R)
• M19: 24,440,103 km (0.04 R)
• M20: 28,356,127 km (0.111 R)
• M21: 28,908,143 km (0.071 R)
• M22: 31,383,240 km (0.075 R)
• M23: 33,996,565 km (0.083 R)

Planet 8 - Gas Giant

Semi-Major Axis: 5.68 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 929.8

Radius: 13.1

Gravity: 5.42 G

Time & Orbit

Eccentricity (e): 0.187

Orbit Range: 4.62 AU - 6.74 AU

Year: 8607 Days

Day: 8.8 Hours

Environment

Temp: -214 °C

Axial Tilt: 48.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 48,021,638 km

• M1: 201,359 km (0.11 R)
• M2: 994,377 km (0.101 R)
• M3: 1,455,138 km (0.118 R)
• M4: 2,145,233 km (0.078 R)
• M5: 3,248,967 km (0.114 R)
• M6: 3,836,886 km (0.076 R)
• M7: 7,048,752 km (0.078 R)
• M8: 8,886,862 km (0.072 R)
• M9: 10,552,185 km (0.115 R)
• M10: 19,243,672 km (0.115 R)
• M11: 22,526,747 km (0.087 R)
• M12: 23,938,801 km (0.111 R)
• M13: 25,315,400 km (0.087 R)
• M14: 28,226,126 km (0.116 R)
• M15: 29,243,990 km (0.113 R)
• M16: 29,762,048 km (0.087 R)
• M17: 31,245,310 km (0.082 R)
• M18: 33,224,042 km (0.06 R)
• M19: 43,842,349 km (0.075 R)

Kuiper Belt

Range: 30 - 53 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 165 - 18,001 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit