🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.26 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.52 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.84

Radius: 0.93

Gravity: 0.97 G

Time & Orbit

Eccentricity (e): 0.194

Orbit Range: 0.42 AU - 0.62 AU

Year: 246 Days

Day: 34.9 Hours

Environment

Temp: -116 °C

Axial Tilt: 2.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.78 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 695.9

Radius: 9.6

Gravity: 7.55 G

Time & Orbit

Eccentricity (e): 0.069

Orbit Range: 0.73 AU - 0.83 AU

Year: 452 Days

Day: 7.7 Hours

Environment

Temp: -152 °C

Axial Tilt: 43.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 75,728,852 km

• M1: 119,379 km (0.118 R)
• M2: 695,181 km (0.077 R)
• M3: 1,177,634 km (0.113 R)
• M4: 1,527,245 km (0.105 R)
• M5: 2,210,757 km (0.111 R)
• M6: 2,668,377 km (0.098 R)
• M7: 3,131,233 km (0.066 R)
• M8: 3,509,716 km (0.097 R)
• M9: 3,971,973 km (0.114 R)
• M10: 4,359,282 km (0.109 R)
• M11: 4,771,723 km (0.111 R)
• M12: 5,097,996 km (0.043 R)
• M13: 5,795,571 km (0.064 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.92 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 856.1

Radius: 8.3

Gravity: 12.43 G

Time & Orbit

Eccentricity (e): 0.206

Orbit Range: 0.73 AU - 1.11 AU

Year: 579 Days

Day: 12.7 Hours

Environment

Temp: -144 °C

Axial Tilt: 23.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 75,728,852 km

• M1: 103,223 km (0.094 R)
• M2: 382,223 km (0.081 R)
• M3: 676,033 km (0.119 R)
• M4: 1,144,424 km (0.119 R)
• M5: 1,544,897 km (0.079 R)
• M6: 1,825,094 km (0.096 R)
• M7: 2,101,551 km (0.036 R)
• M8: 2,416,604 km (0.078 R)
• M9: 2,831,588 km (0.079 R)
• M10: 3,890,293 km (0.076 R)
• M11: 4,414,932 km (0.071 R)
• M12: 5,262,853 km (0.109 R)
• M13: 6,117,057 km (0.075 R)
• M14: 6,516,034 km (0.062 R)
• M15: 7,544,819 km (0.099 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.27 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 185.1

Radius: 10.7

Gravity: 1.62 G

Time & Orbit

Eccentricity (e): 0.096

Orbit Range: 1.15 AU - 1.39 AU

Year: 939 Days

Day: 6.1 Hours

Environment

Temp: -172 °C

Axial Tilt: 48.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 75,728,852 km

• M1: 133,142 km (0.046 R)
• M2: 747,241 km (0.117 R)
• M3: 1,776,325 km (0.072 R)
• M4: 2,443,681 km (0.107 R)
• M5: 3,415,319 km (0.055 R)
• M6: 3,848,405 km (0.046 R)
• M7: 4,218,361 km (0.11 R)
• M8: 4,552,114 km (0.043 R)
• M9: 4,887,961 km (0.09 R)
• M10: 6,270,844 km (0.117 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.64 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 112.3

Radius: 12.6

Gravity: 0.71 G

Time & Orbit

Eccentricity (e): 0.1

Orbit Range: 1.48 AU - 1.8 AU

Year: 1378 Days

Day: 13.4 Hours

Environment

Temp: -182 °C

Axial Tilt: 8.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 75,728,852 km

• M1: 156,928 km (0.119 R)
• M2: 809,624 km (0.114 R)
• M3: 1,554,621 km (0.064 R)
• M4: 2,001,021 km (0.055 R)
• M5: 2,453,405 km (0.077 R)
• M6: 2,997,044 km (0.1 R)
• M7: 4,040,339 km (0.039 R)
• M8: 4,947,202 km (0.108 R)
• M9: 5,483,959 km (0.062 R)
• M10: 6,419,993 km (0.1 R)

Planet 6 - Ice Giant

Semi-Major Axis: 8.12 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 13.9

Radius: 6.9

Gravity: 0.29 G

Time & Orbit

Eccentricity (e): 0.051

Orbit Range: 7.71 AU - 8.53 AU

Year: 15179 Days

Day: 20.5 Hours

Environment

Temp: -219 °C

Axial Tilt: 34.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 75,728,852 km

• M1: 86,617 km (0.111 R)
• M2: 308,770 km (0.087 R)
• M3: 743,352 km (0.074 R)
• M4: 1,997,880 km (0.1 R)
• M5: 2,233,496 km (0.114 R)
• M6: 3,928,590 km (0.093 R)
• M7: 4,423,160 km (0.102 R)
• M8: 6,029,841 km (0.081 R)
• M9: 6,366,287 km (0.098 R)
• M10: 8,397,377 km (0.077 R)
• M11: 11,167,780 km (0.076 R)
• M12: 12,863,622 km (0.053 R)

Planet 7 - Ice Giant

Semi-Major Axis: 8.66 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 966.5

Radius: 3.3

Gravity: 88.75 G

Time & Orbit

Eccentricity (e): 0.208

Orbit Range: 6.86 AU - 10.46 AU

Year: 16718 Days

Day: 22.3 Hours

Environment

Temp: -230 °C

Axial Tilt: 32.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (28)

Outer Limit: 75,728,852 km

• M1: 41,139 km (0.113 R)
• M2: 235,617 km (0.086 R)
• M3: 345,272 km (0.092 R)
• M4: 504,893 km (0.12 R)
• M5: 683,662 km (0.097 R)
• M6: 1,237,922 km (0.102 R)
• M7: 3,691,327 km (0.088 R)
• M8: 4,096,588 km (0.092 R)
• M9: 4,565,428 km (0.036 R)
• M10: 5,257,468 km (0.101 R)
• M11: 7,264,921 km (0.101 R)
• M12: 7,456,407 km (0.071 R)
• M13: 7,949,481 km (0.088 R)
• M14: 8,569,415 km (0.116 R)
• M15: 9,110,211 km (0.099 R)
• M16: 9,963,517 km (0.094 R)
• M17: 11,182,142 km (0.077 R)
• M18: 11,309,150 km (0.078 R)
• M19: 14,961,881 km (0.106 R)
• M20: 16,884,962 km (0.063 R)
• M21: 17,136,436 km (0.071 R)
• M22: 26,562,299 km (0.1 R)
• M23: 30,960,925 km (0.052 R)
• M24: 42,232,526 km (0.044 R)
• M25: 43,947,067 km (0.099 R)
• M26: 46,851,660 km (0.113 R)
• M27: 47,680,731 km (0.062 R)
• M28: 60,724,917 km (0.109 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: 185 - 17,952 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit