🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.28 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.55 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.59

Radius: 1.2

Gravity: 1.1 G

Time & Orbit

Eccentricity (e): 0.142

Orbit Range: 0.47 AU - 0.63 AU

Year: 268 Days

Day: 18.8 Hours

Environment

Temp: -128 °C

Axial Tilt: 2.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.55 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.78

Radius: 0.91

Gravity: 0.94 G

Time & Orbit

Eccentricity (e): 0.041

Orbit Range: 0.53 AU - 0.57 AU

Year: 268 Days

Day: 18.4 Hours

Environment

Temp: -115 °C

Axial Tilt: 43.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.87 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 125

Radius: 8.6

Gravity: 1.69 G

Time & Orbit

Eccentricity (e): 0.17

Orbit Range: 0.72 AU - 1.02 AU

Year: 532 Days

Day: 12.8 Hours

Environment

Temp: -160 °C

Axial Tilt: 0 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 28,995,136 km

• M1: 106,962 km (0.066 R)
• M2: 568,921 km (0.082 R)
• M3: 931,097 km (0.059 R)
• M4: 1,497,325 km (0.102 R)
• M5: 1,781,561 km (0.108 R)
• M6: 2,404,038 km (0.091 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.34 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 711.8

Radius: 14

Gravity: 3.63 G

Time & Orbit

Eccentricity (e): 0.232

Orbit Range: 1.03 AU - 1.65 AU

Year: 1018 Days

Day: 8.6 Hours

Environment

Temp: -172 °C

Axial Tilt: 48.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 28,995,136 km

• M1: 174,431 km (0.055 R)
• M2: 736,171 km (0.046 R)
• M3: 1,339,649 km (0.08 R)
• M4: 2,173,507 km (0.036 R)
• M5: 2,630,679 km (0.054 R)
• M6: 3,304,467 km (0.107 R)
• M7: 3,743,986 km (0.062 R)
• M8: 4,323,678 km (0.075 R)
• M9: 4,888,709 km (0.076 R)
• M10: 5,725,859 km (0.026 R)
• M11: 6,476,092 km (0.108 R)
• M12: 9,969,950 km (0.099 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.73 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 67.3

Radius: 12.3

Gravity: 0.44 G

Time & Orbit

Eccentricity (e): 0.193

Orbit Range: 2.2 AU - 3.26 AU

Year: 2959 Days

Day: 6 Hours

Environment

Temp: -194 °C

Axial Tilt: 26.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 28,995,136 km

• M1: 153,188 km (0.104 R)
• M2: 679,324 km (0.09 R)
• M3: 1,325,587 km (0.091 R)
• M4: 1,859,950 km (0.095 R)
• M5: 2,401,943 km (0.068 R)
• M6: 2,945,283 km (0.085 R)
• M7: 3,686,989 km (0.119 R)
• M8: 4,086,715 km (0.103 R)
• M9: 4,549,720 km (0.07 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.64 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 740.5

Radius: 8.2

Gravity: 11.01 G

Time & Orbit

Eccentricity (e): 0.169

Orbit Range: 3.02 AU - 4.26 AU

Year: 4556 Days

Day: 14.8 Hours

Environment

Temp: -200 °C

Axial Tilt: 36.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 28,995,136 km

• M1: 110,702 km (0.071 R)
• M2: 528,828 km (0.087 R)
• M3: 809,923 km (0.097 R)
• M4: 1,193,193 km (0.087 R)
• M5: 1,513,332 km (0.042 R)
• M6: 2,377,559 km (0.07 R)
• M7: 2,817,975 km (0.117 R)
• M8: 3,817,738 km (0.085 R)
• M9: 4,112,745 km (0.051 R)
• M10: 7,498,593 km (0.084 R)
• M11: 8,146,651 km (0.063 R)
• M12: 9,028,381 km (0.097 R)
• M13: 9,554,068 km (0.103 R)
• M14: 9,972,194 km (0.096 R)
• M15: 11,346,550 km (0.092 R)
• M16: 12,494,115 km (0.091 R)
• M17: 15,242,826 km (0.11 R)
• M18: 18,179,432 km (0.086 R)
• M19: 19,214,650 km (0.094 R)
• M20: 20,563,275 km (0.069 R)
• M21: 22,776,725 km (0.078 R)
• M22: 23,598,915 km (0.073 R)
• M23: 26,265,347 km (0.081 R)

Planet 7 - Ice Giant

Semi-Major Axis: 6.68 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 118.2

Radius: 4.1

Gravity: 7.03 G

Time & Orbit

Eccentricity (e): 0.18

Orbit Range: 5.48 AU - 7.88 AU

Year: 11326 Days

Day: 24.2 Hours

Environment

Temp: -218 °C

Axial Tilt: 0.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (28)

Outer Limit: 28,995,136 km

• M1: 51,013 km (0.099 R)
• M2: 282,590 km (0.091 R)
• M3: 417,079 km (0.062 R)
• M4: 565,630 km (0.094 R)
• M5: 742,454 km (0.11 R)
• M6: 1,367,923 km (0.096 R)
• M7: 1,577,360 km (0.08 R)
• M8: 1,917,396 km (0.066 R)
• M9: 3,192,269 km (0.104 R)
• M10: 4,508,132 km (0.095 R)
• M11: 4,659,525 km (0.107 R)
• M12: 4,919,227 km (0.079 R)
• M13: 5,582,245 km (0.12 R)
• M14: 7,497,097 km (0.079 R)
• M15: 8,147,399 km (0.117 R)
• M16: 8,334,546 km (0.097 R)
• M17: 8,562,833 km (0.052 R)
• M18: 8,756,263 km (0.065 R)
• M19: 9,111,857 km (0.103 R)
• M20: 10,236,384 km (0.082 R)
• M21: 10,586,443 km (0.099 R)
• M22: 13,998,920 km (0.093 R)
• M23: 14,159,588 km (0.066 R)
• M24: 17,452,536 km (0.104 R)
• M25: 19,641,452 km (0.076 R)
• M26: 20,455,714 km (0.073 R)
• M27: 23,257,383 km (0.12 R)
• M28: 25,023,984 km (0.107 R)

Kuiper Belt

Range: 30 - 56 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 339 - 15,373 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit