🌌 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: 0.59 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.3

Radius: 1.79

Gravity: 1.34 G

Time & Orbit

Eccentricity (e): 0.067

Orbit Range: 0.55 AU - 0.63 AU

Year: 297 Days

Day: 18.6 Hours

Environment

Temp: -124 °C

Axial Tilt: 47.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.83 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 423.5

Radius: 8.4

Gravity: 6 G

Time & Orbit

Eccentricity (e): 0.059

Orbit Range: 0.78 AU - 0.88 AU

Year: 496 Days

Day: 12.2 Hours

Environment

Temp: -155 °C

Axial Tilt: 17.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 80,873,043 km

• M1: 104,419 km (0.114 R)
• M2: 403,615 km (0.118 R)
• M3: 673,190 km (0.059 R)
• M4: 980,016 km (0.099 R)
• M5: 1,255,276 km (0.046 R)
• M6: 1,999,525 km (0.083 R)
• M7: 2,269,549 km (0.042 R)
• M8: 2,535,235 km (0.111 R)
• M9: 3,253,155 km (0.115 R)
• M10: 3,616,977 km (0.105 R)
• M11: 3,981,847 km (0.108 R)
• M12: 4,539,398 km (0.119 R)
• M13: 5,055,810 km (0.083 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.08 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 139.9

Radius: 9

Gravity: 1.73 G

Time & Orbit

Eccentricity (e): 0.028

Orbit Range: 1.05 AU - 1.11 AU

Year: 736 Days

Day: 7.2 Hours

Environment

Temp: -172 °C

Axial Tilt: 10.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (5)

Outer Limit: 80,873,043 km

• M1: 112,049 km (0.052 R)
• M2: 422,165 km (0.119 R)
• M3: 1,174,642 km (0.042 R)
• M4: 2,248,007 km (0.099 R)
• M5: 3,668,888 km (0.111 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.18 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 774.3

Radius: 8.8

Gravity: 10 G

Time & Orbit

Eccentricity (e): 0.226

Orbit Range: 0.91 AU - 1.45 AU

Year: 841 Days

Day: 9.1 Hours

Environment

Temp: -164 °C

Axial Tilt: 7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 80,873,043 km

• M1: 109,506 km (0.078 R)
• M2: 505,342 km (0.089 R)
• M3: 990,188 km (0.118 R)
• M4: 1,329,626 km (0.082 R)
• M5: 1,643,033 km (0.096 R)
• M6: 1,996,533 km (0.111 R)
• M7: 2,291,839 km (0.076 R)
• M8: 2,616,317 km (0.104 R)
• M9: 2,933,465 km (0.088 R)
• M10: 3,248,967 km (0.092 R)
• M11: 4,170,639 km (0.104 R)
• M12: 4,553,759 km (0.091 R)
• M13: 5,144,372 km (0.069 R)
• M14: 5,907,171 km (0.11 R)
• M15: 6,810,892 km (0.107 R)
• M16: 7,108,592 km (0.084 R)
• M17: 7,607,800 km (0.062 R)
• M18: 8,439,265 km (0.107 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.3 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 400.5

Radius: 14.7

Gravity: 1.85 G

Time & Orbit

Eccentricity (e): 0.183

Orbit Range: 1.06 AU - 1.54 AU

Year: 972 Days

Day: 13.7 Hours

Environment

Temp: -165 °C

Axial Tilt: 0.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 80,873,043 km

• M1: 184,454 km (0.112 R)
• M2: 779,854 km (0.087 R)
• M3: 1,702,424 km (0.1 R)
• M4: 2,217,040 km (0.106 R)
• M5: 2,954,558 km (0.109 R)
• M6: 3,597,829 km (0.088 R)
• M7: 4,087,762 km (0.097 R)
• M8: 4,573,506 km (0.083 R)
• M9: 5,275,419 km (0.116 R)
• M10: 6,268,450 km (0.039 R)
• M11: 7,070,444 km (0.102 R)
• M12: 8,351,451 km (0.117 R)

Planet 6 - Gas Giant

Semi-Major Axis: 5.41 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 849.7

Radius: 9.6

Gravity: 9.22 G

Time & Orbit

Eccentricity (e): 0.106

Orbit Range: 4.84 AU - 5.98 AU

Year: 8255 Days

Day: 13.6 Hours

Environment

Temp: -211 °C

Axial Tilt: 3.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (32)

Outer Limit: 80,873,043 km

• M1: 119,379 km (0.078 R)
• M2: 486,492 km (0.095 R)
• M3: 792,270 km (0.052 R)
• M4: 1,133,054 km (0.112 R)
• M5: 1,440,029 km (0.091 R)
• M6: 2,335,522 km (0.055 R)
• M7: 3,969,879 km (0.114 R)
• M8: 4,693,484 km (0.113 R)
• M9: 5,372,359 km (0.093 R)
• M10: 5,871,866 km (0.06 R)
• M11: 8,057,491 km (0.084 R)
• M12: 8,893,145 km (0.077 R)
• M13: 9,215,229 km (0.094 R)
• M14: 10,328,835 km (0.094 R)
• M15: 13,836,307 km (0.095 R)
• M16: 14,584,446 km (0.077 R)
• M17: 15,359,064 km (0.027 R)
• M18: 16,572,303 km (0.091 R)
• M19: 17,848,372 km (0.063 R)
• M20: 20,118,670 km (0.046 R)
• M21: 20,997,408 km (0.111 R)
• M22: 22,152,453 km (0.111 R)
• M23: 25,964,805 km (0.067 R)
• M24: 28,869,846 km (0.114 R)
• M25: 29,272,863 km (0.099 R)
• M26: 30,193,488 km (0.064 R)
• M27: 31,027,795 km (0.086 R)
• M28: 32,416,363 km (0.113 R)
• M29: 32,961,348 km (0.066 R)
• M30: 34,406,762 km (0.111 R)
• M31: 40,235,544 km (0.066 R)
• M32: 43,978,034 km (0.05 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.84 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 567.9

Radius: 12.4

Gravity: 3.69 G

Time & Orbit

Eccentricity (e): 0.021

Orbit Range: 5.72 AU - 5.96 AU

Year: 9258 Days

Day: 13 Hours

Environment

Temp: -228 °C

Axial Tilt: 33.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 80,873,043 km

• M1: 154,535 km (0.029 R)
• M2: 736,022 km (0.059 R)
• M3: 1,950,457 km (0.037 R)
• M4: 2,721,484 km (0.098 R)
• M5: 3,638,220 km (0.081 R)
• M6: 4,956,477 km (0.084 R)
• M7: 5,513,729 km (0.108 R)
• M8: 6,181,534 km (0.098 R)
• M9: 7,638,916 km (0.045 R)
• M10: 9,041,546 km (0.072 R)
• M11: 9,971,446 km (0.115 R)
• M12: 11,379,162 km (0.092 R)
• M13: 14,400,141 km (0.092 R)
• M14: 15,602,460 km (0.103 R)
• M15: 18,278,616 km (0.094 R)
• M16: 19,839,819 km (0.109 R)
• M17: 22,304,444 km (0.099 R)
• M18: 31,120,546 km (0.045 R)
• M19: 32,377,168 km (0.042 R)
• M20: 40,884,649 km (0.055 R)
• M21: 41,508,173 km (0.11 R)

Planet 8 - Ice Giant

Semi-Major Axis: 9.19 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 985

Radius: 3.5

Gravity: 80.41 G

Time & Orbit

Eccentricity (e): 0.051

Orbit Range: 8.72 AU - 9.66 AU

Year: 18276 Days

Day: 16.9 Hours

Environment

Temp: -239 °C

Axial Tilt: 33.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 80,873,043 km

• M1: 56,249 km (0.119 R)
• M2: 169,644 km (0.078 R)
• M3: 305,628 km (0.059 R)
• M4: 538,852 km (0.083 R)
• M5: 2,182,633 km (0.049 R)
• M6: 2,594,027 km (0.049 R)
• M7: 3,629,244 km (0.076 R)
• M8: 3,783,330 km (0.118 R)
• M9: 4,513,966 km (0.103 R)
• M10: 6,204,721 km (0.102 R)
• M11: 9,207,899 km (0.098 R)
• M12: 9,379,487 km (0.118 R)
• M13: 9,966,509 km (0.091 R)
• M14: 10,207,960 km (0.059 R)
• M15: 12,490,525 km (0.092 R)
• M16: 14,086,883 km (0.07 R)
• M17: 22,966,265 km (0.084 R)
• M18: 27,178,193 km (0.032 R)
• M19: 31,487,509 km (0.1 R)
• M20: 33,871,351 km (0.115 R)
• M21: 38,994,480 km (0.084 R)
• M22: 69,563,758 km (0.106 R)
• M23: 73,132,116 km (0.07 R)
• M24: 77,290,039 km (0.093 R)
• M25: 79,906,955 km (0.091 R)

Kuiper Belt

Range: 30 - 50 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 233 - 16,606 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit