🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.3 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.6 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.19

Radius: 1.77

Gravity: 1.34 G

Time & Orbit

Eccentricity (e): 0.022

Orbit Range: 0.59 AU - 0.61 AU

Year: 296 Days

Day: 29.8 Hours

Environment

Temp: -128 °C

Axial Tilt: 9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.71 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 407.1

Radius: 11

Gravity: 3.36 G

Time & Orbit

Eccentricity (e): 0.079

Orbit Range: 0.65 AU - 0.77 AU

Year: 380 Days

Day: 11 Hours

Environment

Temp: -135 °C

Axial Tilt: 28.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 46,884,563 km

• M1: 137,181 km (0.069 R)
• M2: 480,957 km (0.047 R)
• M3: 876,344 km (0.116 R)
• M4: 1,268,889 km (0.12 R)
• M5: 1,679,386 km (0.117 R)
• M6: 2,267,455 km (0.087 R)
• M7: 2,701,588 km (0.089 R)
• M8: 3,264,226 km (0.096 R)
• M9: 3,647,346 km (0.065 R)
• M10: 4,518,454 km (0.051 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.93 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 805.6

Radius: 12.6

Gravity: 5.07 G

Time & Orbit

Eccentricity (e): 0.042

Orbit Range: 0.89 AU - 0.97 AU

Year: 570 Days

Day: 10.3 Hours

Environment

Temp: -154 °C

Axial Tilt: 11.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 46,884,563 km

• M1: 157,227 km (0.078 R)
• M2: 556,205 km (0.103 R)
• M3: 1,237,025 km (0.107 R)
• M4: 1,694,794 km (0.11 R)
• M5: 2,181,436 km (0.084 R)
• M6: 2,695,604 km (0.081 R)
• M7: 3,106,549 km (0.056 R)
• M8: 3,858,279 km (0.062 R)
• M9: 4,414,035 km (0.081 R)
• M10: 4,989,538 km (0.092 R)
• M11: 5,908,817 km (0.092 R)
• M12: 6,690,466 km (0.064 R)
• M13: 7,429,928 km (0.069 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.16 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 95.9

Radius: 8.6

Gravity: 1.3 G

Time & Orbit

Eccentricity (e): 0.091

Orbit Range: 1.05 AU - 1.27 AU

Year: 794 Days

Day: 10.2 Hours

Environment

Temp: -156 °C

Axial Tilt: 6.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 46,884,563 km

• M1: 107,112 km (0.102 R)
• M2: 390,151 km (0.066 R)
• M3: 826,229 km (0.095 R)
• M4: 1,182,721 km (0.117 R)
• M5: 1,519,466 km (0.08 R)
• M6: 1,811,780 km (0.044 R)
• M7: 2,271,793 km (0.109 R)
• M8: 2,556,777 km (0.118 R)
• M9: 2,904,891 km (0.119 R)
• M10: 3,178,805 km (0.026 R)
• M11: 3,503,433 km (0.104 R)
• M12: 4,413,287 km (0.106 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.95 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 333.5

Radius: 10.2

Gravity: 3.21 G

Time & Orbit

Eccentricity (e): 0.097

Orbit Range: 2.66 AU - 3.24 AU

Year: 3222 Days

Day: 5.5 Hours

Environment

Temp: -202 °C

Axial Tilt: 33.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 46,884,563 km

• M1: 127,009 km (0.116 R)
• M2: 450,589 km (0.079 R)
• M3: 800,199 km (0.117 R)
• M4: 1,138,739 km (0.09 R)
• M5: 1,861,746 km (0.088 R)
• M6: 3,022,176 km (0.066 R)
• M7: 4,717,419 km (0.095 R)
• M8: 5,561,899 km (0.108 R)
• M9: 6,109,876 km (0.069 R)
• M10: 6,721,133 km (0.064 R)
• M11: 7,227,372 km (0.094 R)
• M12: 7,608,697 km (0.12 R)
• M13: 10,591,978 km (0.104 R)
• M14: 11,395,767 km (0.098 R)
• M15: 11,752,409 km (0.117 R)
• M16: 12,824,876 km (0.1 R)
• M17: 13,916,492 km (0.077 R)
• M18: 15,306,854 km (0.088 R)
• M19: 16,433,775 km (0.048 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.08 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 297.4

Radius: 14.6

Gravity: 1.4 G

Time & Orbit

Eccentricity (e): 0.149

Orbit Range: 2.62 AU - 3.54 AU

Year: 3437 Days

Day: 8.4 Hours

Environment

Temp: -197 °C

Axial Tilt: 10.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 46,884,563 km

• M1: 182,210 km (0.094 R)
• M2: 706,700 km (0.073 R)
• M3: 1,211,144 km (0.07 R)
• M4: 1,766,452 km (0.096 R)
• M5: 2,790,898 km (0.1 R)
• M6: 3,532,604 km (0.056 R)
• M7: 4,046,323 km (0.114 R)
• M8: 4,547,177 km (0.116 R)
• M9: 5,578,505 km (0.091 R)
• M10: 6,150,118 km (0.057 R)
• M11: 6,706,024 km (0.067 R)
• M12: 7,180,548 km (0.084 R)
• M13: 8,482,199 km (0.069 R)
• M14: 10,260,320 km (0.107 R)
• M15: 11,354,179 km (0.084 R)
• M16: 11,828,853 km (0.098 R)
• M17: 12,988,686 km (0.051 R)
• M18: 14,132,361 km (0.096 R)
• M19: 15,727,972 km (0.07 R)
• M20: 17,078,392 km (0.045 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.23 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 780.2

Radius: 13.4

Gravity: 4.35 G

Time & Orbit

Eccentricity (e): 0.108

Orbit Range: 2.88 AU - 3.58 AU

Year: 3691 Days

Day: 12.7 Hours

Environment

Temp: -208 °C

Axial Tilt: 5.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 46,884,563 km

• M1: 166,951 km (0.048 R)
• M2: 716,424 km (0.074 R)
• M3: 1,146,069 km (0.107 R)
• M4: 1,581,997 km (0.079 R)
• M5: 2,117,259 km (0.109 R)
• M6: 2,823,510 km (0.065 R)
• M7: 4,494,369 km (0.075 R)
• M8: 8,464,098 km (0.107 R)
• M9: 9,481,363 km (0.114 R)
• M10: 10,494,590 km (0.085 R)
• M11: 11,400,255 km (0.118 R)
• M12: 12,783,736 km (0.107 R)
• M13: 13,615,949 km (0.1 R)
• M14: 14,904,885 km (0.083 R)
• M15: 15,442,839 km (0.113 R)
• M16: 17,964,909 km (0.118 R)
• M17: 20,354,585 km (0.104 R)
• M18: 23,522,320 km (0.068 R)
• M19: 25,072,304 km (0.09 R)

Planet 8 - Gas Giant

Semi-Major Axis: 5.49 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 168.2

Radius: 8.5

Gravity: 2.33 G

Time & Orbit

Eccentricity (e): 0.164

Orbit Range: 4.59 AU - 6.39 AU

Year: 8179 Days

Day: 6.9 Hours

Environment

Temp: -218 °C

Axial Tilt: 24.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 46,884,563 km

• M1: 106,065 km (0.111 R)
• M2: 399,576 km (0.099 R)
• M3: 922,869 km (0.098 R)
• M4: 2,001,470 km (0.1 R)
• M5: 2,768,458 km (0.098 R)
• M6: 3,144,098 km (0.059 R)
• M7: 6,128,127 km (0.102 R)
• M8: 6,800,121 km (0.074 R)
• M9: 7,829,205 km (0.089 R)
• M10: 8,146,502 km (0.098 R)
• M11: 10,486,960 km (0.08 R)
• M12: 11,856,678 km (0.102 R)
• M13: 12,656,578 km (0.111 R)
• M14: 13,391,702 km (0.094 R)
• M15: 14,207,011 km (0.08 R)
• M16: 15,326,900 km (0.033 R)
• M17: 15,880,263 km (0.081 R)
• M18: 18,975,443 km (0.091 R)
• M19: 21,683,015 km (0.104 R)
• M20: 23,237,037 km (0.086 R)

Planet 9 - Gas Giant

Semi-Major Axis: 5.61 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 898.1

Radius: 14.4

Gravity: 4.33 G

Time & Orbit

Eccentricity (e): 0.246

Orbit Range: 4.23 AU - 6.99 AU

Year: 8448 Days

Day: 14.7 Hours

Environment

Temp: -223 °C

Axial Tilt: 7.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 46,884,563 km

• M1: 179,069 km (0.081 R)
• M2: 636,838 km (0.08 R)
• M3: 1,108,670 km (0.093 R)
• M4: 2,322,058 km (0.103 R)
• M5: 4,157,624 km (0.083 R)
• M6: 5,344,384 km (0.066 R)
• M7: 6,194,100 km (0.116 R)
• M8: 6,784,263 km (0.116 R)
• M9: 9,011,925 km (0.04 R)
• M10: 9,869,271 km (0.094 R)
• M11: 10,521,817 km (0.054 R)
• M12: 11,746,724 km (0.114 R)
• M13: 16,405,950 km (0.119 R)
• M14: 16,966,194 km (0.103 R)
• M15: 19,105,294 km (0.109 R)
• M16: 24,634,431 km (0.118 R)
• M17: 34,568,926 km (0.088 R)
• M18: 35,374,960 km (0.049 R)
• M19: 36,548,106 km (0.109 R)
• M20: 37,144,254 km (0.059 R)
• M21: 40,603,704 km (0.114 R)
• M22: 42,411,595 km (0.086 R)
• M23: 43,869,276 km (0.065 R)
• M24: 46,187,445 km (0.119 R)

Kuiper Belt

Range: 30 - 58 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 309 - 16,593 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit