🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.36 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Gas Giant

Semi-Major Axis: 0.71 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 814.6

Radius: 12.5

Gravity: 5.21 G

Time & Orbit

Eccentricity (e): 0.057

Orbit Range: 0.67 AU - 0.75 AU

Year: 413 Days

Day: 7.5 Hours

Environment

Temp: -169 °C

Axial Tilt: 25.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 40,201,740 km

• M1: 155,432 km (0.033 R)
• M2: 697,724 km (0.113 R)
• M3: 1,155,195 km (0.106 R)
• M4: 1,669,063 km (0.034 R)
• M5: 2,191,908 km (0.098 R)
• M6: 2,709,816 km (0.066 R)
• M7: 3,114,628 km (0.112 R)
• M8: 3,735,010 km (0.112 R)
• M9: 4,508,281 km (0.119 R)
• M10: 5,018,709 km (0.105 R)
• M11: 5,451,346 km (0.088 R)
• M12: 5,926,320 km (0.059 R)

Planet 2 - Gas Giant

Semi-Major Axis: 1.09 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 233.3

Radius: 10.3

Gravity: 2.2 G

Time & Orbit

Eccentricity (e): 0.221

Orbit Range: 0.85 AU - 1.33 AU

Year: 786 Days

Day: 7.2 Hours

Environment

Temp: -173 °C

Axial Tilt: 45.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 40,201,740 km

• M1: 128,205 km (0.086 R)
• M2: 465,848 km (0.118 R)
• M3: 809,624 km (0.089 R)
• M4: 1,161,328 km (0.088 R)
• M5: 1,638,396 km (0.081 R)
• M6: 2,009,997 km (0.111 R)
• M7: 2,534,637 km (0.114 R)
• M8: 2,948,125 km (0.114 R)
• M9: 3,602,766 km (0.092 R)
• M10: 4,266,830 km (0.088 R)
• M11: 4,809,272 km (0.11 R)
• M12: 5,217,375 km (0.11 R)
• M13: 5,682,774 km (0.075 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.32 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 718.7

Radius: 13.7

Gravity: 3.83 G

Time & Orbit

Eccentricity (e): 0.026

Orbit Range: 1.29 AU - 1.35 AU

Year: 1047 Days

Day: 5.5 Hours

Environment

Temp: -196 °C

Axial Tilt: 11.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 40,201,740 km

• M1: 170,392 km (0.109 R)
• M2: 806,931 km (0.103 R)
• M3: 1,370,167 km (0.028 R)
• M4: 2,324,153 km (0.06 R)
• M5: 2,935,559 km (0.071 R)
• M6: 3,776,000 km (0.068 R)
• M7: 4,485,243 km (0.103 R)
• M8: 5,829,231 km (0.12 R)
• M9: 6,896,013 km (0.102 R)
• M10: 7,328,201 km (0.08 R)
• M11: 7,804,222 km (0.088 R)
• M12: 8,327,515 km (0.062 R)
• M13: 9,386,518 km (0.098 R)
• M14: 10,009,294 km (0.1 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.38 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 620.9

Radius: 8.7

Gravity: 8.2 G

Time & Orbit

Eccentricity (e): 0.21

Orbit Range: 1.09 AU - 1.67 AU

Year: 1119 Days

Day: 14.2 Hours

Environment

Temp: -187 °C

Axial Tilt: 32.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 40,201,740 km

• M1: 115,639 km (0.091 R)
• M2: 451,187 km (0.091 R)
• M3: 740,809 km (0.114 R)
• M4: 1,251,087 km (0.109 R)
• M5: 1,599,052 km (0.115 R)
• M6: 2,400,148 km (0.03 R)
• M7: 2,996,445 km (0.044 R)
• M8: 3,550,855 km (0.063 R)
• M9: 4,038,843 km (0.076 R)
• M10: 4,589,064 km (0.117 R)
• M11: 5,227,398 km (0.114 R)
• M12: 5,650,312 km (0.119 R)
• M13: 6,473,997 km (0.071 R)
• M14: 6,890,927 km (0.046 R)
• M15: 7,375,325 km (0.115 R)
• M16: 7,702,196 km (0.085 R)
• M17: 9,050,522 km (0.031 R)
• M18: 9,961,722 km (0.083 R)
• M19: 10,740,080 km (0.083 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.59 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 446

Radius: 14

Gravity: 2.28 G

Time & Orbit

Eccentricity (e): 0.016

Orbit Range: 1.56 AU - 1.62 AU

Year: 1384 Days

Day: 7.6 Hours

Environment

Temp: -185 °C

Axial Tilt: 29.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 40,201,740 km

• M1: 174,581 km (0.071 R)
• M2: 647,310 km (0.113 R)
• M3: 1,125,275 km (0.093 R)
• M4: 1,793,828 km (0.101 R)
• M5: 2,364,544 km (0.116 R)
• M6: 2,819,770 km (0.114 R)
• M7: 3,276,941 km (0.11 R)
• M8: 3,721,696 km (0.076 R)
• M9: 5,014,969 km (0.103 R)
• M10: 5,967,160 km (0.114 R)
• M11: 7,329,248 km (0.109 R)
• M12: 8,044,326 km (0.099 R)
• M13: 10,346,189 km (0.101 R)
• M14: 10,951,911 km (0.04 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.73 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 601.6

Radius: 11.3

Gravity: 4.71 G

Time & Orbit

Eccentricity (e): 0.15

Orbit Range: 1.47 AU - 1.99 AU

Year: 1571 Days

Day: 14.9 Hours

Environment

Temp: -202 °C

Axial Tilt: 11.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 40,201,740 km

• M1: 140,921 km (0.097 R)
• M2: 757,414 km (0.059 R)
• M3: 1,141,282 km (0.053 R)
• M4: 1,667,717 km (0.083 R)
• M5: 2,109,031 km (0.112 R)
• M6: 2,654,165 km (0.071 R)
• M7: 3,112,234 km (0.06 R)
• M8: 3,622,961 km (0.11 R)
• M9: 4,390,398 km (0.102 R)
• M10: 5,607,826 km (0.106 R)
• M11: 6,013,685 km (0.064 R)
• M12: 7,037,981 km (0.072 R)
• M13: 7,838,180 km (0.077 R)
• M14: 8,289,218 km (0.093 R)
• M15: 9,430,351 km (0.105 R)
• M16: 10,269,445 km (0.098 R)
• M17: 10,913,613 km (0.101 R)
• M18: 11,369,737 km (0.081 R)
• M19: 12,661,365 km (0.092 R)

Planet 7 - Ice Giant

Semi-Major Axis: 7.19 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 228.2

Radius: 3.6

Gravity: 17.61 G

Time & Orbit

Eccentricity (e): 0.177

Orbit Range: 5.92 AU - 8.46 AU

Year: 13308 Days

Day: 22.9 Hours

Environment

Temp: -223 °C

Axial Tilt: 148.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 40,201,740 km

• M1: 51,462 km (0.068 R)
• M2: 964,607 km (0.088 R)
• M3: 1,435,990 km (0.115 R)
• M4: 2,029,744 km (0.089 R)
• M5: 2,336,420 km (0.095 R)
• M6: 2,557,376 km (0.057 R)
• M7: 3,396,021 km (0.063 R)
• M8: 3,655,574 km (0.107 R)
• M9: 4,485,842 km (0.076 R)
• M10: 4,626,015 km (0.034 R)
• M11: 5,124,924 km (0.063 R)
• M12: 5,434,591 km (0.079 R)
• M13: 9,204,607 km (0.113 R)
• M14: 10,085,888 km (0.097 R)
• M15: 10,278,421 km (0.037 R)
• M16: 14,784,907 km (0.102 R)
• M17: 17,464,803 km (0.118 R)
• M18: 19,470,163 km (0.12 R)
• M19: 25,409,049 km (0.04 R)
• M20: 38,188,297 km (0.109 R)
• M21: 38,538,655 km (0.063 R)

Kuiper Belt

Range: 30 - 55 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 420 - 16,374 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit