🌌 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: 2.78

Radius: 1.51

Gravity: 1.22 G

Time & Orbit

Eccentricity (e): 0.081

Orbit Range: 0.49 AU - 0.57 AU

Year: 253 Days

Day: 19.8 Hours

Environment

Temp: -121 °C

Axial Tilt: 11.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 39,956,720 km

• M1: 169,943 km (0.088 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.73 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 400.5

Radius: 10.6

Gravity: 3.56 G

Time & Orbit

Eccentricity (e): 0.175

Orbit Range: 0.6 AU - 0.86 AU

Year: 409 Days

Day: 14.5 Hours

Environment

Temp: -141 °C

Axial Tilt: 2.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 39,956,720 km

• M1: 131,796 km (0.05 R)
• M2: 525,986 km (0.073 R)
• M3: 880,832 km (0.119 R)
• M4: 1,474,287 km (0.09 R)
• M5: 1,844,691 km (0.097 R)
• M6: 2,655,362 km (0.072 R)
• M7: 3,105,951 km (0.066 R)
• M8: 3,938,613 km (0.089 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.89 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 432.9

Radius: 8.7

Gravity: 5.72 G

Time & Orbit

Eccentricity (e): 0.151

Orbit Range: 0.76 AU - 1.02 AU

Year: 551 Days

Day: 5.9 Hours

Environment

Temp: -152 °C

Axial Tilt: 22 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 39,956,720 km

• M1: 108,159 km (0.102 R)
• M2: 392,545 km (0.096 R)
• M3: 771,027 km (0.046 R)
• M4: 1,339,799 km (0.094 R)
• M5: 1,647,970 km (0.12 R)
• M6: 2,087,937 km (0.094 R)
• M7: 2,584,602 km (0.088 R)
• M8: 3,249,864 km (0.1 R)
• M9: 3,749,671 km (0.099 R)
• M10: 4,133,389 km (0.116 R)
• M11: 4,557,649 km (0.062 R)
• M12: 5,695,490 km (0.118 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.05 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 19.9

Radius: 11.9

Gravity: 0.14 G

Time & Orbit

Eccentricity (e): 0.187

Orbit Range: 1.67 AU - 2.43 AU

Year: 1925 Days

Day: 5 Hours

Environment

Temp: -191 °C

Axial Tilt: 17.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 39,956,720 km

• M1: 148,102 km (0.12 R)
• M2: 945,159 km (0.104 R)
• M3: 1,679,685 km (0.097 R)
• M4: 2,332,081 km (0.101 R)
• M5: 3,462,293 km (0.071 R)
• M6: 3,858,727 km (0.092 R)
• M7: 4,364,069 km (0.107 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.23 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 758

Radius: 12.1

Gravity: 5.18 G

Time & Orbit

Eccentricity (e): 0.054

Orbit Range: 2.11 AU - 2.35 AU

Year: 2185 Days

Day: 12.3 Hours

Environment

Temp: -199 °C

Axial Tilt: 9.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 39,956,720 km

• M1: 153,338 km (0.084 R)
• M2: 546,182 km (0.115 R)
• M3: 934,837 km (0.103 R)
• M4: 1,529,189 km (0.11 R)
• M5: 2,197,593 km (0.104 R)
• M6: 2,672,416 km (0.094 R)
• M7: 3,576,137 km (0.098 R)
• M8: 4,298,545 km (0.093 R)
• M9: 5,002,702 km (0.104 R)
• M10: 5,513,878 km (0.109 R)
• M11: 6,111,223 km (0.113 R)
• M12: 6,696,300 km (0.076 R)
• M13: 7,202,389 km (0.042 R)
• M14: 8,580,635 km (0.051 R)
• M15: 9,178,577 km (0.108 R)
• M16: 9,875,404 km (0.085 R)
• M17: 13,633,153 km (0.118 R)
• M18: 16,225,535 km (0.075 R)
• M19: 17,717,175 km (0.111 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.06 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 602.7

Radius: 14.3

Gravity: 2.95 G

Time & Orbit

Eccentricity (e): 0.214

Orbit Range: 2.41 AU - 3.71 AU

Year: 3511 Days

Day: 7.8 Hours

Environment

Temp: -210 °C

Axial Tilt: 28.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 39,956,720 km

• M1: 177,872 km (0.109 R)
• M2: 834,158 km (0.04 R)
• M3: 1,345,483 km (0.112 R)
• M4: 2,045,003 km (0.115 R)
• M5: 2,578,319 km (0.065 R)
• M6: 3,769,567 km (0.085 R)
• M7: 4,356,589 km (0.051 R)
• M8: 5,531,830 km (0.086 R)
• M9: 7,924,947 km (0.109 R)
• M10: 10,253,588 km (0.09 R)
• M11: 11,025,213 km (0.098 R)
• M12: 12,961,309 km (0.094 R)
• M13: 14,108,276 km (0.08 R)
• M14: 16,991,177 km (0.106 R)
• M15: 17,898,787 km (0.069 R)
• M16: 20,058,980 km (0.105 R)
• M17: 20,816,394 km (0.088 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.21 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 173.6

Radius: 8.6

Gravity: 2.35 G

Time & Orbit

Eccentricity (e): 0.138

Orbit Range: 4.49 AU - 5.93 AU

Year: 7801 Days

Day: 10.6 Hours

Environment

Temp: -220 °C

Axial Tilt: 19.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 39,956,720 km

• M1: 106,962 km (0.041 R)
• M2: 536,458 km (0.11 R)
• M3: 2,393,267 km (0.115 R)
• M4: 3,100,266 km (0.09 R)
• M5: 4,675,083 km (0.067 R)
• M6: 6,207,863 km (0.105 R)
• M7: 6,507,807 km (0.066 R)
• M8: 7,267,614 km (0.068 R)
• M9: 8,263,038 km (0.107 R)
• M10: 10,229,951 km (0.07 R)
• M11: 10,949,667 km (0.119 R)
• M12: 16,106,904 km (0.047 R)
• M13: 18,214,289 km (0.096 R)
• M14: 20,040,430 km (0.076 R)
• M15: 24,274,199 km (0.101 R)

Planet 8 - Ice Giant

Semi-Major Axis: 5.99 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 264.4

Radius: 4.5

Gravity: 13.06 G

Time & Orbit

Eccentricity (e): 0.195

Orbit Range: 4.82 AU - 7.16 AU

Year: 9617 Days

Day: 24.2 Hours

Environment

Temp: -224 °C

Axial Tilt: 18.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (29)

Outer Limit: 39,956,720 km

• M1: 56,698 km (0.117 R)
• M2: 231,727 km (0.096 R)
• M3: 379,380 km (0.115 R)
• M4: 739,163 km (0.077 R)
• M5: 1,106,875 km (0.081 R)
• M6: 1,343,688 km (0.091 R)
• M7: 2,008,351 km (0.045 R)
• M8: 2,228,559 km (0.086 R)
• M9: 2,430,068 km (0.116 R)
• M10: 2,571,139 km (0.115 R)
• M11: 3,603,065 km (0.047 R)
• M12: 4,098,982 km (0.103 R)
• M13: 4,774,416 km (0.098 R)
• M14: 5,024,693 km (0.071 R)
• M15: 6,211,453 km (0.109 R)
• M16: 6,476,092 km (0.097 R)
• M17: 7,573,542 km (0.116 R)
• M18: 8,913,490 km (0.092 R)
• M19: 10,129,571 km (0.088 R)
• M20: 13,425,661 km (0.036 R)
• M21: 14,607,933 km (0.045 R)
• M22: 15,919,308 km (0.095 R)
• M23: 17,372,053 km (0.117 R)
• M24: 19,607,344 km (0.058 R)
• M25: 24,393,578 km (0.088 R)
• M26: 30,752,385 km (0.09 R)
• M27: 30,943,272 km (0.068 R)
• M28: 33,195,319 km (0.076 R)
• M29: 33,901,720 km (0.058 R)

Planet 9 - Ice Giant

Semi-Major Axis: 7.21 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 246

Radius: 5.5

Gravity: 8.13 G

Time & Orbit

Eccentricity (e): 0.086

Orbit Range: 6.59 AU - 7.83 AU

Year: 12700 Days

Day: 22 Hours

Environment

Temp: -230 °C

Axial Tilt: 49 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 39,956,720 km

• M1: 68,366 km (0.082 R)
• M2: 337,642 km (0.078 R)
• M3: 572,960 km (0.066 R)
• M4: 1,123,929 km (0.064 R)
• M5: 1,650,065 km (0.07 R)
• M6: 2,737,791 km (0.102 R)
• M7: 2,960,841 km (0.084 R)
• M8: 3,374,479 km (0.03 R)
• M9: 4,316,347 km (0.087 R)
• M10: 5,516,721 km (0.057 R)
• M11: 6,176,447 km (0.118 R)
• M12: 6,887,486 km (0.112 R)
• M13: 11,124,098 km (0.113 R)
• M14: 12,227,232 km (0.034 R)
• M15: 14,045,445 km (0.089 R)
• M16: 15,906,742 km (0.088 R)
• M17: 19,511,751 km (0.09 R)
• M18: 23,541,918 km (0.112 R)
• M19: 23,794,888 km (0.076 R)
• M20: 28,093,732 km (0.095 R)
• M21: 35,913,362 km (0.1 R)
• M22: 38,772,028 km (0.089 R)

Kuiper Belt

Range: 30 - 51 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 498 - 20,498 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit