🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.26 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.51 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.91

Radius: 1.89

Gravity: 1.37 G

Time & Orbit

Eccentricity (e): 0.112

Orbit Range: 0.45 AU - 0.57 AU

Year: 235 Days

Day: 24.3 Hours

Environment

Temp: -115 °C

Axial Tilt: 15.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.8 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 218.7

Radius: 11.7

Gravity: 1.6 G

Time & Orbit

Eccentricity (e): 0.018

Orbit Range: 0.79 AU - 0.81 AU

Year: 462 Days

Day: 14.3 Hours

Environment

Temp: -145 °C

Axial Tilt: 16.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 57,998,817 km

• M1: 145,559 km (0.043 R)
• M2: 666,907 km (0.092 R)
• M3: 1,092,812 km (0.09 R)
• M4: 1,621,641 km (0.088 R)
• M5: 2,012,091 km (0.044 R)
• M6: 2,382,795 km (0.06 R)
• M7: 2,958,896 km (0.103 R)
• M8: 3,528,116 km (0.103 R)
• M9: 4,049,465 km (0.034 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.81 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 276.6

Radius: 9

Gravity: 3.41 G

Time & Orbit

Eccentricity (e): 0.064

Orbit Range: 0.76 AU - 0.86 AU

Year: 471 Days

Day: 10.4 Hours

Environment

Temp: -155 °C

Axial Tilt: 44.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 57,998,817 km

• M1: 111,899 km (0.12 R)
• M2: 460,313 km (0.077 R)
• M3: 1,196,484 km (0.078 R)
• M4: 1,836,463 km (0.099 R)
• M5: 2,308,744 km (0.052 R)
• M6: 2,928,827 km (0.094 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.77 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 843.9

Radius: 14.8

Gravity: 3.85 G

Time & Orbit

Eccentricity (e): 0.084

Orbit Range: 1.62 AU - 1.92 AU

Year: 1520 Days

Day: 13.5 Hours

Environment

Temp: -182 °C

Axial Tilt: 38.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 57,998,817 km

• M1: 184,604 km (0.097 R)
• M2: 698,772 km (0.062 R)
• M3: 1,262,606 km (0.099 R)
• M4: 1,752,838 km (0.105 R)
• M5: 2,588,791 km (0.03 R)
• M6: 3,213,362 km (0.09 R)
• M7: 3,937,715 km (0.094 R)
• M8: 4,728,789 km (0.103 R)
• M9: 5,853,316 km (0.075 R)
• M10: 6,529,049 km (0.054 R)
• M11: 7,501,585 km (0.092 R)
• M12: 8,153,533 km (0.073 R)
• M13: 9,249,936 km (0.077 R)
• M14: 10,202,874 km (0.091 R)
• M15: 11,040,323 km (0.064 R)
• M16: 13,213,382 km (0.107 R)
• M17: 14,465,366 km (0.113 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.92 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 398.7

Radius: 10.2

Gravity: 3.83 G

Time & Orbit

Eccentricity (e): 0.104

Orbit Range: 2.62 AU - 3.22 AU

Year: 3222 Days

Day: 10.8 Hours

Environment

Temp: -212 °C

Axial Tilt: 47.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 57,998,817 km

• M1: 126,859 km (0.075 R)
• M2: 694,284 km (0.063 R)
• M3: 1,035,217 km (0.104 R)
• M4: 1,452,446 km (0.058 R)
• M5: 1,898,247 km (0.116 R)
• M6: 2,218,836 km (0.071 R)
• M7: 2,619,608 km (0.081 R)
• M8: 3,035,939 km (0.066 R)
• M9: 3,442,845 km (0.081 R)
• M10: 4,346,267 km (0.063 R)
• M11: 6,263,812 km (0.095 R)
• M12: 6,898,257 km (0.083 R)
• M13: 7,394,174 km (0.1 R)
• M14: 7,945,143 km (0.076 R)
• M15: 9,872,113 km (0.077 R)
• M16: 10,277,075 km (0.103 R)
• M17: 14,111,866 km (0.085 R)
• M18: 15,692,817 km (0.061 R)
• M19: 18,088,926 km (0.095 R)
• M20: 18,640,493 km (0.082 R)

Planet 6 - Gas Giant

Semi-Major Axis: 5.74 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 822.6

Radius: 9.7

Gravity: 8.74 G

Time & Orbit

Eccentricity (e): 0.236

Orbit Range: 4.39 AU - 7.09 AU

Year: 8879 Days

Day: 13.3 Hours

Environment

Temp: -226 °C

Axial Tilt: 7.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 57,998,817 km

• M1: 129,851 km (0.069 R)
• M2: 600,336 km (0.119 R)
• M3: 1,917,396 km (0.112 R)
• M4: 2,274,636 km (0.089 R)
• M5: 2,970,266 km (0.098 R)
• M6: 4,174,529 km (0.093 R)
• M7: 4,750,181 km (0.097 R)
• M8: 5,745,905 km (0.091 R)
• M9: 10,362,944 km (0.048 R)
• M10: 11,255,295 km (0.088 R)
• M11: 13,252,875 km (0.112 R)
• M12: 13,989,196 km (0.106 R)
• M13: 20,647,947 km (0.062 R)
• M14: 21,138,628 km (0.038 R)
• M15: 21,889,160 km (0.046 R)
• M16: 29,981,508 km (0.079 R)
• M17: 32,883,258 km (0.064 R)
• M18: 44,036,676 km (0.101 R)
• M19: 45,397,718 km (0.104 R)

Planet 7 - Ice Giant

Semi-Major Axis: 8.83 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 422.8

Radius: 7.9

Gravity: 6.77 G

Time & Orbit

Eccentricity (e): 0.14

Orbit Range: 7.59 AU - 10.07 AU

Year: 16942 Days

Day: 20.9 Hours

Environment

Temp: -229 °C

Axial Tilt: 12.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (26)

Outer Limit: 57,998,817 km

• M1: 103,522 km (0.096 R)
• M2: 812,017 km (0.068 R)
• M3: 2,496,639 km (0.081 R)
• M4: 2,799,724 km (0.071 R)
• M5: 3,480,245 km (0.037 R)
• M6: 4,326,969 km (0.107 R)
• M7: 5,166,213 km (0.084 R)
• M8: 5,480,668 km (0.096 R)
• M9: 6,148,173 km (0.043 R)
• M10: 6,582,007 km (0.115 R)
• M11: 7,644,002 km (0.095 R)
• M12: 10,266,453 km (0.105 R)
• M13: 17,590,615 km (0.036 R)
• M14: 20,821,480 km (0.068 R)
• M15: 21,890,058 km (0.057 R)
• M16: 24,917,919 km (0.064 R)
• M17: 26,634,854 km (0.057 R)
• M18: 27,049,988 km (0.113 R)
• M19: 30,415,341 km (0.099 R)
• M20: 36,542,122 km (0.071 R)
• M21: 39,421,432 km (0.095 R)
• M22: 42,448,545 km (0.098 R)
• M23: 43,015,222 km (0.09 R)
• M24: 47,123,180 km (0.082 R)
• M25: 49,740,694 km (0.053 R)
• M26: 51,485,154 km (0.114 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: 356 - 16,471 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit