🌌 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: 0.56 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.15

Radius: 0.47

Gravity: 0.68 G

Time & Orbit

Eccentricity (e): 0.012

Orbit Range: 0.55 AU - 0.57 AU

Year: 275 Days

Day: 22.2 Hours

Environment

Temp: -122 °C

Axial Tilt: 34.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.62 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.15

Radius: 1.77

Gravity: 1.32 G

Time & Orbit

Eccentricity (e): 0.206

Orbit Range: 0.49 AU - 0.75 AU

Year: 320 Days

Day: 20.5 Hours

Environment

Temp: -123 °C

Axial Tilt: 67.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.77 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 182.1

Radius: 11.1

Gravity: 1.48 G

Time & Orbit

Eccentricity (e): 0.212

Orbit Range: 0.61 AU - 0.93 AU

Year: 443 Days

Day: 10.5 Hours

Environment

Temp: -143 °C

Axial Tilt: 21.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 62,409,427 km

• M1: 138,378 km (0.066 R)
• M2: 507,436 km (0.068 R)
• M3: 856,747 km (0.101 R)
• M4: 1,272,629 km (0.112 R)
• M5: 1,765,554 km (0.041 R)
• M6: 2,770,852 km (0.115 R)
• M7: 3,400,360 km (0.12 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.9 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 277.5

Radius: 9.5

Gravity: 3.07 G

Time & Orbit

Eccentricity (e): 0.051

Orbit Range: 0.85 AU - 0.95 AU

Year: 560 Days

Day: 10.2 Hours

Environment

Temp: -144 °C

Axial Tilt: 31 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 62,409,427 km

• M1: 118,332 km (0.114 R)
• M2: 599,289 km (0.093 R)
• M3: 1,082,789 km (0.058 R)
• M4: 1,505,104 km (0.099 R)
• M5: 2,051,735 km (0.072 R)
• M6: 3,575,838 km (0.077 R)
• M7: 4,952,438 km (0.072 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.63 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 202

Radius: 12.8

Gravity: 1.23 G

Time & Orbit

Eccentricity (e): 0.142

Orbit Range: 2.26 AU - 3 AU

Year: 2798 Days

Day: 6.9 Hours

Environment

Temp: -206 °C

Axial Tilt: 11.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 62,409,427 km

• M1: 172,636 km (0.11 R)
• M2: 597,045 km (0.116 R)
• M3: 1,102,536 km (0.115 R)
• M4: 1,533,079 km (0.113 R)
• M5: 3,072,890 km (0.096 R)
• M6: 4,072,652 km (0.03 R)
• M7: 5,804,547 km (0.056 R)
• M8: 6,317,518 km (0.11 R)
• M9: 6,759,580 km (0.046 R)
• M10: 7,844,314 km (0.074 R)
• M11: 9,289,130 km (0.08 R)
• M12: 10,697,445 km (0.056 R)
• M13: 11,982,041 km (0.106 R)
• M14: 12,933,035 km (0.064 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.08 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 463.8

Radius: 11

Gravity: 3.83 G

Time & Orbit

Eccentricity (e): 0.244

Orbit Range: 2.33 AU - 3.83 AU

Year: 3546 Days

Day: 8.3 Hours

Environment

Temp: -199 °C

Axial Tilt: 6.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 62,409,427 km

• M1: 136,732 km (0.049 R)
• M2: 484,099 km (0.089 R)
• M3: 917,334 km (0.115 R)
• M4: 1,323,044 km (0.09 R)
• M5: 1,958,087 km (0.045 R)
• M6: 3,048,655 km (0.044 R)
• M7: 3,417,264 km (0.11 R)
• M8: 3,875,333 km (0.073 R)
• M9: 7,988,825 km (0.104 R)
• M10: 8,489,230 km (0.11 R)
• M11: 9,260,856 km (0.115 R)
• M12: 9,663,873 km (0.07 R)
• M13: 10,426,672 km (0.067 R)
• M14: 11,229,115 km (0.102 R)
• M15: 12,957,120 km (0.036 R)
• M16: 14,806,300 km (0.101 R)
• M17: 16,291,059 km (0.095 R)
• M18: 16,663,707 km (0.05 R)
• M19: 17,760,409 km (0.071 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.29 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 673

Radius: 14.1

Gravity: 3.39 G

Time & Orbit

Eccentricity (e): 0.158

Orbit Range: 3.61 AU - 4.97 AU

Year: 5829 Days

Day: 7.2 Hours

Environment

Temp: -217 °C

Axial Tilt: 0.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 62,409,427 km

• M1: 175,329 km (0.046 R)
• M2: 855,700 km (0.106 R)
• M3: 1,418,786 km (0.119 R)
• M4: 2,539,424 km (0.102 R)
• M5: 5,799,311 km (0.097 R)
• M6: 10,946,824 km (0.098 R)
• M7: 11,617,771 km (0.088 R)
• M8: 12,164,252 km (0.072 R)
• M9: 14,353,616 km (0.108 R)
• M10: 18,613,117 km (0.074 R)
• M11: 21,139,974 km (0.113 R)
• M12: 22,946,817 km (0.096 R)
• M13: 29,438,617 km (0.119 R)
• M14: 31,977,742 km (0.062 R)

Planet 8 - Gas Giant

Semi-Major Axis: 4.43 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 962.4

Radius: 12.8

Gravity: 5.87 G

Time & Orbit

Eccentricity (e): 0.08

Orbit Range: 4.08 AU - 4.78 AU

Year: 6117 Days

Day: 10.6 Hours

Environment

Temp: -216 °C

Axial Tilt: 33.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 62,409,427 km

• M1: 159,322 km (0.092 R)
• M2: 698,472 km (0.085 R)
• M3: 1,363,285 km (0.099 R)
• M4: 1,971,550 km (0.058 R)
• M5: 2,392,070 km (0.079 R)
• M6: 3,308,507 km (0.083 R)
• M7: 4,032,710 km (0.075 R)
• M8: 4,803,438 km (0.08 R)
• M9: 5,209,596 km (0.094 R)
• M10: 5,702,072 km (0.06 R)
• M11: 6,568,693 km (0.113 R)
• M12: 7,070,743 km (0.039 R)
• M13: 7,483,185 km (0.108 R)
• M14: 11,285,364 km (0.065 R)
• M15: 14,538,519 km (0.066 R)
• M16: 17,542,295 km (0.052 R)
• M17: 23,320,812 km (0.101 R)
• M18: 24,069,699 km (0.1 R)
• M19: 27,044,303 km (0.093 R)
• M20: 29,671,541 km (0.097 R)
• M21: 30,847,979 km (0.065 R)
• M22: 32,362,059 km (0.109 R)
• M23: 36,752,457 km (0.104 R)

Planet 9 - Gas Giant

Semi-Major Axis: 5.41 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 949.7

Radius: 13.8

Gravity: 4.99 G

Time & Orbit

Eccentricity (e): 0.215

Orbit Range: 4.25 AU - 6.57 AU

Year: 8255 Days

Day: 10.5 Hours

Environment

Temp: -217 °C

Axial Tilt: 6.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 62,409,427 km

• M1: 171,589 km (0.055 R)
• M2: 618,138 km (0.089 R)
• M3: 1,692,850 km (0.088 R)
• M4: 2,662,693 km (0.098 R)
• M5: 3,377,770 km (0.08 R)
• M6: 4,944,359 km (0.05 R)
• M7: 5,855,261 km (0.103 R)
• M8: 7,883,359 km (0.07 R)
• M9: 8,804,433 km (0.11 R)
• M10: 10,965,973 km (0.104 R)
• M11: 12,571,607 km (0.065 R)
• M12: 14,841,455 km (0.108 R)
• M13: 15,971,069 km (0.116 R)
• M14: 23,013,837 km (0.103 R)
• M15: 23,628,834 km (0.109 R)
• M16: 26,389,364 km (0.114 R)
• M17: 27,355,616 km (0.086 R)
• M18: 28,045,861 km (0.12 R)
• M19: 31,457,590 km (0.075 R)
• M20: 33,542,535 km (0.092 R)
• M21: 37,986,639 km (0.097 R)
• M22: 42,940,722 km (0.096 R)

Planet 10 - Ice Giant

Semi-Major Axis: 10.69 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 287.6

Radius: 4.1

Gravity: 17.11 G

Time & Orbit

Eccentricity (e): 0.045

Orbit Range: 10.21 AU - 11.17 AU

Year: 22929 Days

Day: 16.3 Hours

Environment

Temp: -241 °C

Axial Tilt: 36.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 62,409,427 km

• M1: 82,877 km (0.112 R)
• M2: 799,900 km (0.119 R)
• M3: 1,479,373 km (0.043 R)
• M4: 3,261,084 km (0.083 R)
• M5: 4,443,805 km (0.077 R)
• M6: 5,435,639 km (0.03 R)
• M7: 7,297,983 km (0.1 R)
• M8: 10,257,028 km (0.113 R)
• M9: 11,660,256 km (0.117 R)
• M10: 12,344,218 km (0.055 R)
• M11: 12,728,236 km (0.098 R)
• M12: 14,769,349 km (0.037 R)
• M13: 19,059,218 km (0.084 R)
• M14: 23,716,199 km (0.091 R)
• M15: 36,224,676 km (0.113 R)
• M16: 43,716,088 km (0.05 R)
• M17: 45,814,049 km (0.075 R)
• M18: 62,035,993 km (0.113 R)

Kuiper Belt

Range: 30 - 47 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 449 - 10,450 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit