🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.29 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.57 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.3

Radius: 1.11

Gravity: 1.06 G

Time & Orbit

Eccentricity (e): 0.093

Orbit Range: 0.52 AU - 0.62 AU

Year: 282 Days

Day: 29 Hours

Environment

Temp: -127 °C

Axial Tilt: 18.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.73 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 441.6

Radius: 9.1

Gravity: 5.33 G

Time & Orbit

Eccentricity (e): 0.235

Orbit Range: 0.56 AU - 0.9 AU

Year: 409 Days

Day: 9.8 Hours

Environment

Temp: -133 °C

Axial Tilt: 28.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 24,859,486 km

• M1: 113,246 km (0.115 R)
• M2: 441,763 km (0.084 R)
• M3: 848,669 km (0.118 R)
• M4: 1,263,504 km (0.114 R)
• M5: 2,123,542 km (0.111 R)
• M6: 2,909,679 km (0.112 R)
• M7: 3,397,816 km (0.119 R)
• M8: 3,768,969 km (0.12 R)
• M9: 4,363,022 km (0.09 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.01 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 840.3

Radius: 14

Gravity: 4.29 G

Time & Orbit

Eccentricity (e): 0.205

Orbit Range: 0.8 AU - 1.22 AU

Year: 666 Days

Day: 9 Hours

Environment

Temp: -168 °C

Axial Tilt: 5.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 24,859,486 km

• M1: 176,675 km (0.111 R)
• M2: 675,135 km (0.066 R)
• M3: 1,139,487 km (0.099 R)
• M4: 1,801,607 km (0.076 R)
• M5: 3,385,699 km (0.033 R)
• M6: 4,031,812 km (0.107 R)
• M7: 4,759,307 km (0.055 R)
• M8: 5,279,907 km (0.097 R)
• M9: 6,333,974 km (0.112 R)
• M10: 7,731,966 km (0.055 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.99 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 160.1

Radius: 11.4

Gravity: 1.23 G

Time & Orbit

Eccentricity (e): 0.064

Orbit Range: 1.86 AU - 2.12 AU

Year: 1842 Days

Day: 5.2 Hours

Environment

Temp: -192 °C

Axial Tilt: 19.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 24,859,486 km

• M1: 141,819 km (0.091 R)
• M2: 1,040,453 km (0.052 R)
• M3: 1,450,501 km (0.106 R)
• M4: 2,175,452 km (0.038 R)
• M5: 3,497,449 km (0.088 R)
• M6: 6,846,646 km (0.039 R)
• M7: 7,715,061 km (0.106 R)
• M8: 9,305,137 km (0.085 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.8 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 773.1

Radius: 11.3

Gravity: 6.05 G

Time & Orbit

Eccentricity (e): 0.125

Orbit Range: 3.33 AU - 4.28 AU

Year: 4859 Days

Day: 11.8 Hours

Environment

Temp: -212 °C

Axial Tilt: 27.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 24,859,486 km

• M1: 140,472 km (0.096 R)
• M2: 724,951 km (0.098 R)
• M3: 1,514,230 km (0.111 R)
• M4: 1,865,635 km (0.103 R)
• M5: 2,335,223 km (0.055 R)
• M6: 3,887,450 km (0.111 R)
• M7: 4,310,363 km (0.045 R)
• M8: 4,948,847 km (0.08 R)
• M9: 5,797,217 km (0.105 R)
• M10: 7,178,903 km (0.061 R)
• M11: 7,673,174 km (0.073 R)
• M12: 8,418,471 km (0.111 R)
• M13: 10,096,659 km (0.046 R)
• M14: 10,717,790 km (0.115 R)
• M15: 12,332,848 km (0.057 R)
• M16: 13,833,614 km (0.101 R)
• M17: 16,701,854 km (0.05 R)
• M18: 18,016,969 km (0.082 R)
• M19: 19,332,533 km (0.049 R)
• M20: 20,013,802 km (0.114 R)
• M21: 21,065,774 km (0.096 R)
• M22: 25,239,554 km (0.091 R)
• M23: 25,725,897 km (0.065 R)
• M24: 27,992,006 km (0.115 R)
• M25: 29,040,687 km (0.05 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.84 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 55.9

Radius: 12.3

Gravity: 0.37 G

Time & Orbit

Eccentricity (e): 0.078

Orbit Range: 3.54 AU - 4.14 AU

Year: 4936 Days

Day: 14 Hours

Environment

Temp: -218 °C

Axial Tilt: 43.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (5)

Outer Limit: 24,859,486 km

• M1: 153,936 km (0.079 R)
• M2: 1,572,274 km (0.106 R)
• M3: 3,842,421 km (0.114 R)
• M4: 7,202,838 km (0.11 R)
• M5: 9,602,239 km (0.107 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.41 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 258.9

Radius: 10.6

Gravity: 2.3 G

Time & Orbit

Eccentricity (e): 0.048

Orbit Range: 4.2 AU - 4.62 AU

Year: 6075 Days

Day: 14.8 Hours

Environment

Temp: -212 °C

Axial Tilt: 39 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 24,859,486 km

• M1: 131,796 km (0.085 R)
• M2: 504,444 km (0.045 R)
• M3: 980,614 km (0.041 R)
• M4: 1,510,191 km (0.086 R)
• M5: 2,016,729 km (0.111 R)
• M6: 2,748,562 km (0.102 R)
• M7: 3,450,774 km (0.096 R)
• M8: 3,876,081 km (0.103 R)
• M9: 4,759,606 km (0.065 R)
• M10: 5,939,933 km (0.038 R)
• M11: 7,770,562 km (0.073 R)
• M12: 8,613,397 km (0.073 R)
• M13: 8,944,756 km (0.104 R)
• M14: 11,202,337 km (0.115 R)
• M15: 11,776,344 km (0.054 R)
• M16: 12,509,673 km (0.068 R)
• M17: 15,425,186 km (0.034 R)
• M18: 16,358,976 km (0.105 R)
• M19: 17,446,852 km (0.095 R)
• M20: 18,339,203 km (0.035 R)
• M21: 18,765,856 km (0.1 R)
• M22: 19,136,859 km (0.111 R)
• M23: 21,066,073 km (0.118 R)
• M24: 24,711,474 km (0.118 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: 316 - 16,137 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit