🌌 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: 4.33

Radius: 1.8

Gravity: 1.34 G

Time & Orbit

Eccentricity (e): 0.212

Orbit Range: 0.48 AU - 0.74 AU

Year: 308 Days

Day: 16.6 Hours

Environment

Temp: -132 °C

Axial Tilt: 18.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.63 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.39

Radius: 0.69

Gravity: 0.82 G

Time & Orbit

Eccentricity (e): 0.155

Orbit Range: 0.53 AU - 0.73 AU

Year: 323 Days

Day: 25 Hours

Environment

Temp: -128 °C

Axial Tilt: 10.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.82 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 473

Radius: 14.1

Gravity: 2.38 G

Time & Orbit

Eccentricity (e): 0.203

Orbit Range: 0.65 AU - 0.99 AU

Year: 479 Days

Day: 13.6 Hours

Environment

Temp: -145 °C

Axial Tilt: 178.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 36,551,360 km

• M1: 175,628 km (0.084 R)
• M2: 646,263 km (0.118 R)
• M3: 1,121,386 km (0.11 R)
• M4: 1,848,431 km (0.101 R)
• M5: 2,715,949 km (0.088 R)
• M6: 3,183,443 km (0.048 R)
• M7: 4,434,081 km (0.104 R)
• M8: 5,195,235 km (0.073 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.23 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 162.6

Radius: 9.5

Gravity: 1.8 G

Time & Orbit

Eccentricity (e): 0.039

Orbit Range: 1.18 AU - 1.28 AU

Year: 881 Days

Day: 8.3 Hours

Environment

Temp: -167 °C

Axial Tilt: 20 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 36,551,360 km

• M1: 118,182 km (0.062 R)
• M2: 532,568 km (0.089 R)
• M3: 855,251 km (0.099 R)
• M4: 1,306,588 km (0.109 R)
• M5: 2,685,431 km (0.089 R)
• M6: 3,567,161 km (0.104 R)
• M7: 4,081,778 km (0.116 R)
• M8: 4,823,933 km (0.11 R)
• M9: 5,132,553 km (0.092 R)
• M10: 5,636,848 km (0.067 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.93 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 212.1

Radius: 13

Gravity: 1.26 G

Time & Orbit

Eccentricity (e): 0.049

Orbit Range: 3.74 AU - 4.12 AU

Year: 5030 Days

Day: 9 Hours

Environment

Temp: -211 °C

Axial Tilt: 34 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 36,551,360 km

• M1: 161,715 km (0.084 R)
• M2: 668,254 km (0.118 R)
• M3: 1,118,992 km (0.047 R)
• M4: 1,906,924 km (0.047 R)
• M5: 3,022,924 km (0.079 R)
• M6: 3,473,962 km (0.114 R)
• M7: 4,235,565 km (0.045 R)
• M8: 4,645,612 km (0.105 R)
• M9: 5,105,925 km (0.056 R)
• M10: 5,521,209 km (0.104 R)
• M11: 6,447,818 km (0.085 R)
• M12: 6,963,482 km (0.049 R)
• M13: 7,568,755 km (0.071 R)
• M14: 8,013,060 km (0.089 R)
• M15: 11,923,698 km (0.118 R)
• M16: 12,614,691 km (0.028 R)
• M17: 14,219,128 km (0.09 R)
• M18: 15,597,672 km (0.105 R)
• M19: 16,267,123 km (0.081 R)
• M20: 18,849,033 km (0.059 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.37 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 892.5

Radius: 8.3

Gravity: 12.96 G

Time & Orbit

Eccentricity (e): 0.084

Orbit Range: 4 AU - 4.74 AU

Year: 5898 Days

Day: 12.5 Hours

Environment

Temp: -212 °C

Axial Tilt: 22.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (29)

Outer Limit: 36,551,360 km

• M1: 109,057 km (0.056 R)
• M2: 532,718 km (0.091 R)
• M3: 900,579 km (0.069 R)
• M4: 1,165,667 km (0.103 R)
• M5: 2,039,468 km (0.078 R)
• M6: 3,104,754 km (0.078 R)
• M7: 3,988,878 km (0.098 R)
• M8: 4,344,173 km (0.112 R)
• M9: 4,693,035 km (0.112 R)
• M10: 5,355,903 km (0.064 R)
• M11: 5,757,424 km (0.113 R)
• M12: 6,178,841 km (0.092 R)
• M13: 7,682,748 km (0.046 R)
• M14: 8,854,100 km (0.072 R)
• M15: 10,421,436 km (0.111 R)
• M16: 10,998,884 km (0.105 R)
• M17: 11,496,447 km (0.078 R)
• M18: 15,163,839 km (0.044 R)
• M19: 15,842,714 km (0.12 R)
• M20: 16,157,916 km (0.087 R)
• M21: 16,671,037 km (0.056 R)
• M22: 19,115,167 km (0.111 R)
• M23: 20,946,694 km (0.118 R)
• M24: 21,788,481 km (0.079 R)
• M25: 22,652,558 km (0.052 R)
• M26: 23,133,516 km (0.059 R)
• M27: 31,484,966 km (0.113 R)
• M28: 34,873,807 km (0.052 R)
• M29: 36,382,352 km (0.077 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.78 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 377.3

Radius: 12.2

Gravity: 2.53 G

Time & Orbit

Eccentricity (e): 0.06

Orbit Range: 5.43 AU - 6.13 AU

Year: 8972 Days

Day: 5.8 Hours

Environment

Temp: -225 °C

Axial Tilt: 28.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 36,551,360 km

• M1: 157,826 km (0.105 R)
• M2: 813,812 km (0.1 R)
• M3: 1,246,599 km (0.12 R)
• M4: 2,055,924 km (0.102 R)
• M5: 2,867,791 km (0.041 R)
• M6: 3,380,912 km (0.063 R)
• M7: 4,304,380 km (0.113 R)
• M8: 4,811,816 km (0.102 R)
• M9: 6,207,713 km (0.053 R)
• M10: 8,577,344 km (0.086 R)
• M11: 10,055,969 km (0.061 R)
• M12: 10,474,394 km (0.092 R)
• M13: 11,346,251 km (0.115 R)
• M14: 12,530,018 km (0.063 R)
• M15: 14,080,301 km (0.095 R)
• M16: 14,901,743 km (0.11 R)
• M17: 16,383,959 km (0.115 R)
• M18: 16,899,174 km (0.083 R)
• M19: 17,425,310 km (0.092 R)
• M20: 17,826,980 km (0.114 R)
• M21: 20,739,650 km (0.105 R)
• M22: 21,957,975 km (0.078 R)
• M23: 23,791,896 km (0.109 R)
• M24: 24,453,118 km (0.06 R)
• M25: 25,467,841 km (0.032 R)
• M26: 32,054,785 km (0.118 R)
• M27: 32,963,442 km (0.1 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: 307 - 19,474 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit