🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.31 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.61 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.39

Radius: 1.14

Gravity: 1.07 G

Time & Orbit

Eccentricity (e): 0.033

Orbit Range: 0.59 AU - 0.63 AU

Year: 313 Days

Day: 30.4 Hours

Environment

Temp: -137 °C

Axial Tilt: 36.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 18,872,055 km

• M1: 27,676 km (0.075 R)
• M2: 285,283 km (0.119 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.86 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 178.4

Radius: 8

Gravity: 2.79 G

Time & Orbit

Eccentricity (e): 0.25

Orbit Range: 0.65 AU - 1.08 AU

Year: 523 Days

Day: 7.3 Hours

Environment

Temp: -152 °C

Axial Tilt: 37.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 18,872,055 km

• M1: 99,483 km (0.096 R)
• M2: 349,461 km (0.041 R)
• M3: 837,898 km (0.109 R)
• M4: 1,130,362 km (0.106 R)
• M5: 1,713,195 km (0.103 R)
• M6: 2,508,307 km (0.107 R)
• M7: 3,857,979 km (0.045 R)
• M8: 4,108,706 km (0.073 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.88 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 567.4

Radius: 14.1

Gravity: 2.85 G

Time & Orbit

Eccentricity (e): 0.033

Orbit Range: 0.85 AU - 0.91 AU

Year: 542 Days

Day: 14.4 Hours

Environment

Temp: -157 °C

Axial Tilt: 46.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 18,872,055 km

• M1: 175,628 km (0.086 R)
• M2: 616,942 km (0.092 R)
• M3: 1,077,254 km (0.054 R)
• M4: 1,522,458 km (0.062 R)
• M5: 2,544,361 km (0.047 R)
• M6: 3,003,626 km (0.08 R)
• M7: 3,890,442 km (0.03 R)
• M8: 5,040,401 km (0.073 R)
• M9: 5,515,673 km (0.098 R)
• M10: 6,056,769 km (0.056 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.09 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 988.9

Radius: 11.9

Gravity: 6.98 G

Time & Orbit

Eccentricity (e): 0.138

Orbit Range: 0.94 AU - 1.24 AU

Year: 747 Days

Day: 13.7 Hours

Environment

Temp: -154 °C

Axial Tilt: 44.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 18,872,055 km

• M1: 148,102 km (0.056 R)
• M2: 708,944 km (0.08 R)
• M3: 1,180,776 km (0.115 R)
• M4: 1,596,060 km (0.099 R)
• M5: 1,983,668 km (0.118 R)
• M6: 2,615,420 km (0.037 R)
• M7: 3,095,330 km (0.098 R)
• M8: 3,489,969 km (0.107 R)
• M9: 3,903,008 km (0.078 R)
• M10: 4,499,006 km (0.085 R)
• M11: 4,971,736 km (0.1 R)
• M12: 5,400,334 km (0.081 R)
• M13: 5,873,960 km (0.067 R)
• M14: 7,227,522 km (0.075 R)
• M15: 7,877,973 km (0.051 R)
• M16: 8,540,842 km (0.088 R)
• M17: 9,323,837 km (0.104 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.29 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 160

Radius: 11.5

Gravity: 1.21 G

Time & Orbit

Eccentricity (e): 0.057

Orbit Range: 1.22 AU - 1.36 AU

Year: 961 Days

Day: 14.8 Hours

Environment

Temp: -171 °C

Axial Tilt: 16.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 18,872,055 km

• M1: 143,165 km (0.1 R)
• M2: 591,360 km (0.117 R)
• M3: 1,404,874 km (0.107 R)
• M4: 1,812,528 km (0.052 R)
• M5: 2,336,270 km (0.11 R)
• M6: 3,014,547 km (0.061 R)
• M7: 3,394,675 km (0.096 R)
• M8: 3,885,356 km (0.109 R)
• M9: 4,380,076 km (0.029 R)
• M10: 5,648,516 km (0.06 R)
• M11: 6,157,748 km (0.103 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.41 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 113.9

Radius: 10.8

Gravity: 0.98 G

Time & Orbit

Eccentricity (e): 0.172

Orbit Range: 1.17 AU - 1.65 AU

Year: 1098 Days

Day: 14.5 Hours

Environment

Temp: -174 °C

Axial Tilt: 37.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 18,872,055 km

• M1: 134,339 km (0.054 R)
• M2: 479,611 km (0.11 R)
• M3: 855,550 km (0.103 R)
• M4: 1,217,427 km (0.111 R)
• M5: 1,742,666 km (0.086 R)
• M6: 2,135,809 km (0.028 R)
• M7: 3,393,329 km (0.117 R)
• M8: 4,189,937 km (0.078 R)
• M9: 4,573,805 km (0.087 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.33 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 768

Radius: 12.6

Gravity: 4.84 G

Time & Orbit

Eccentricity (e): 0.057

Orbit Range: 2.2 AU - 2.46 AU

Year: 2333 Days

Day: 6.6 Hours

Environment

Temp: -191 °C

Axial Tilt: 22.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 18,872,055 km

• M1: 156,629 km (0.103 R)
• M2: 627,413 km (0.096 R)
• M3: 1,292,675 km (0.112 R)
• M4: 1,761,814 km (0.103 R)
• M5: 2,265,510 km (0.055 R)
• M6: 3,186,285 km (0.093 R)
• M7: 4,118,878 km (0.096 R)
• M8: 4,747,788 km (0.045 R)
• M9: 5,464,212 km (0.112 R)
• M10: 6,278,174 km (0.108 R)
• M11: 6,686,726 km (0.059 R)
• M12: 7,318,328 km (0.101 R)
• M13: 8,437,320 km (0.098 R)
• M14: 9,525,046 km (0.108 R)
• M15: 10,400,493 km (0.111 R)
• M16: 12,694,576 km (0.054 R)
• M17: 13,845,732 km (0.067 R)
• M18: 14,399,992 km (0.12 R)
• M19: 15,900,608 km (0.08 R)
• M20: 17,343,629 km (0.081 R)

Kuiper Belt

Range: 30 - 59 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 216 - 14,251 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit