🌌 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: 0.62 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.25

Radius: 0.57

Gravity: 0.77 G

Time & Orbit

Eccentricity (e): 0.006

Orbit Range: 0.62 AU - 0.62 AU

Year: 315 Days

Day: 24.3 Hours

Environment

Temp: -132 °C

Axial Tilt: 47.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 76,339,672 km

• M1: 69,114 km (0.095 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.87 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 110.5

Radius: 13.8

Gravity: 0.58 G

Time & Orbit

Eccentricity (e): 0.189

Orbit Range: 0.71 AU - 1.03 AU

Year: 524 Days

Day: 13.4 Hours

Environment

Temp: -159 °C

Axial Tilt: 12.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 76,339,672 km

• M1: 176,974 km (0.11 R)
• M2: 716,873 km (0.094 R)
• M3: 1,266,496 km (0.106 R)
• M4: 1,849,478 km (0.03 R)
• M5: 2,718,493 km (0.058 R)
• M6: 3,232,960 km (0.08 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.99 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 571.5

Radius: 14.6

Gravity: 2.68 G

Time & Orbit

Eccentricity (e): 0.085

Orbit Range: 1.82 AU - 2.16 AU

Year: 1813 Days

Day: 14.2 Hours

Environment

Temp: -182 °C

Axial Tilt: 19.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 76,339,672 km

• M1: 181,612 km (0.081 R)
• M2: 653,593 km (0.08 R)
• M3: 1,223,860 km (0.098 R)
• M4: 1,701,377 km (0.116 R)
• M5: 2,246,661 km (0.053 R)
• M6: 3,038,632 km (0.094 R)
• M7: 3,582,719 km (0.043 R)
• M8: 4,321,733 km (0.118 R)
• M9: 4,992,979 km (0.056 R)
• M10: 6,347,737 km (0.067 R)
• M11: 7,032,297 km (0.04 R)
• M12: 7,850,298 km (0.051 R)
• M13: 8,370,898 km (0.067 R)
• M14: 8,914,687 km (0.087 R)
• M15: 9,417,784 km (0.111 R)
• M16: 10,724,372 km (0.057 R)
• M17: 11,660,406 km (0.046 R)
• M18: 13,695,535 km (0.111 R)

Planet 4 - Gas Giant

Semi-Major Axis: 5.73 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 955.3

Radius: 9.8

Gravity: 9.95 G

Time & Orbit

Eccentricity (e): 0.211

Orbit Range: 4.52 AU - 6.94 AU

Year: 8856 Days

Day: 10.1 Hours

Environment

Temp: -217 °C

Axial Tilt: 4.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 76,339,672 km

• M1: 128,056 km (0.099 R)
• M2: 546,331 km (0.114 R)
• M3: 864,227 km (0.049 R)
• M4: 1,892,263 km (0.096 R)
• M5: 2,803,913 km (0.1 R)
• M6: 3,227,873 km (0.055 R)
• M7: 5,139,435 km (0.049 R)
• M8: 5,989,151 km (0.104 R)
• M9: 6,466,667 km (0.063 R)
• M10: 6,811,939 km (0.082 R)
• M11: 9,197,576 km (0.119 R)
• M12: 13,157,881 km (0.051 R)
• M13: 19,603,754 km (0.091 R)
• M14: 20,492,814 km (0.071 R)
• M15: 23,321,410 km (0.061 R)
• M16: 29,009,869 km (0.117 R)
• M17: 36,276,287 km (0.099 R)
• M18: 38,986,701 km (0.078 R)
• M19: 41,171,578 km (0.117 R)
• M20: 43,845,042 km (0.093 R)

Planet 5 - Gas Giant

Semi-Major Axis: 5.74 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 267.2

Radius: 9.4

Gravity: 3.02 G

Time & Orbit

Eccentricity (e): 0.015

Orbit Range: 5.65 AU - 5.83 AU

Year: 8879 Days

Day: 9.4 Hours

Environment

Temp: -225 °C

Axial Tilt: 32.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 76,339,672 km

• M1: 118,482 km (0.099 R)
• M2: 424,110 km (0.061 R)
• M3: 1,942,379 km (0.097 R)
• M4: 2,900,703 km (0.115 R)
• M5: 7,689,031 km (0.101 R)
• M6: 8,139,471 km (0.033 R)
• M7: 11,950,177 km (0.089 R)
• M8: 22,086,031 km (0.113 R)
• M9: 25,631,650 km (0.06 R)
• M10: 27,064,349 km (0.041 R)
• M11: 28,283,871 km (0.11 R)
• M12: 28,996,854 km (0.076 R)

Planet 6 - Ice Giant

Semi-Major Axis: 6.8 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 343.3

Radius: 5.3

Gravity: 12.22 G

Time & Orbit

Eccentricity (e): 0.02

Orbit Range: 6.66 AU - 6.94 AU

Year: 11449 Days

Day: 24 Hours

Environment

Temp: -228 °C

Axial Tilt: 6.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 76,339,672 km

• M1: 66,122 km (0.1 R)
• M2: 296,653 km (0.116 R)
• M3: 508,932 km (0.05 R)
• M4: 755,768 km (0.094 R)
• M5: 1,804,150 km (0.112 R)
• M6: 1,990,848 km (0.086 R)
• M7: 3,537,840 km (0.09 R)
• M8: 4,115,437 km (0.076 R)
• M9: 4,468,488 km (0.043 R)
• M10: 7,139,708 km (0.096 R)
• M11: 7,332,988 km (0.053 R)
• M12: 8,523,787 km (0.071 R)
• M13: 9,324,435 km (0.088 R)
• M14: 12,411,238 km (0.069 R)
• M15: 14,458,485 km (0.085 R)
• M16: 15,336,774 km (0.091 R)
• M17: 15,659,008 km (0.103 R)
• M18: 17,337,944 km (0.101 R)
• M19: 17,899,535 km (0.105 R)
• M20: 22,422,028 km (0.083 R)
• M21: 26,251,883 km (0.094 R)
• M22: 36,988,822 km (0.072 R)
• M23: 41,668,991 km (0.103 R)

Planet 7 - Ice Giant

Semi-Major Axis: 10.75 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 534.3

Radius: 4.3

Gravity: 28.9 G

Time & Orbit

Eccentricity (e): 0.246

Orbit Range: 8.11 AU - 13.39 AU

Year: 22758 Days

Day: 16.6 Hours

Environment

Temp: -221 °C

Axial Tilt: 27.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 76,339,672 km

• M1: 54,902 km (0.118 R)
• M2: 1,043,445 km (0.092 R)
• M3: 1,538,465 km (0.1 R)
• M4: 1,856,809 km (0.071 R)
• M5: 2,483,624 km (0.063 R)
• M6: 6,912,768 km (0.064 R)
• M7: 8,229,229 km (0.034 R)
• M8: 9,138,784 km (0.087 R)
• M9: 9,704,115 km (0.089 R)
• M10: 9,995,382 km (0.112 R)
• M11: 13,165,510 km (0.116 R)
• M12: 13,885,824 km (0.089 R)
• M13: 16,041,828 km (0.049 R)
• M14: 32,624,453 km (0.093 R)
• M15: 33,409,244 km (0.048 R)
• M16: 36,534,493 km (0.102 R)
• M17: 37,238,650 km (0.099 R)
• M18: 45,592,345 km (0.063 R)
• M19: 48,237,983 km (0.053 R)
• M20: 48,745,269 km (0.042 R)
• M21: 54,378,527 km (0.11 R)
• M22: 60,626,482 km (0.081 R)
• M23: 61,019,775 km (0.098 R)
• M24: 68,181,324 km (0.109 R)
• M25: 69,893,322 km (0.096 R)

Kuiper Belt

Range: 30 - 57 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 451 - 12,615 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit