🌌 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: 4.06

Radius: 1.75

Gravity: 1.33 G

Time & Orbit

Eccentricity (e): 0.043

Orbit Range: 0.54 AU - 0.58 AU

Year: 275 Days

Day: 29.2 Hours

Environment

Temp: -127 °C

Axial Tilt: 34.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.56 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.98

Radius: 1.74

Gravity: 1.31 G

Time & Orbit

Eccentricity (e): 0.021

Orbit Range: 0.55 AU - 0.57 AU

Year: 275 Days

Day: 16.6 Hours

Environment

Temp: -116 °C

Axial Tilt: 33.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 92,215,469 km

• M1: 40,541 km (0.086 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.88 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 936.3

Radius: 9.9

Gravity: 9.55 G

Time & Orbit

Eccentricity (e): 0.188

Orbit Range: 0.71 AU - 1.05 AU

Year: 542 Days

Day: 11.7 Hours

Environment

Temp: -145 °C

Axial Tilt: 3.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 92,215,469 km

• M1: 123,119 km (0.101 R)
• M2: 484,398 km (0.061 R)
• M3: 871,408 km (0.087 R)
• M4: 1,257,370 km (0.067 R)
• M5: 1,831,826 km (0.114 R)
• M6: 2,296,477 km (0.071 R)
• M7: 2,616,317 km (0.099 R)
• M8: 3,097,574 km (0.09 R)
• M9: 3,569,854 km (0.114 R)
• M10: 4,148,648 km (0.079 R)
• M11: 4,594,899 km (0.07 R)
• M12: 4,937,927 km (0.102 R)
• M13: 5,602,440 km (0.098 R)
• M14: 6,813,136 km (0.11 R)
• M15: 7,238,742 km (0.111 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.4 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 878.8

Radius: 10.5

Gravity: 7.97 G

Time & Orbit

Eccentricity (e): 0.098

Orbit Range: 1.26 AU - 1.54 AU

Year: 1087 Days

Day: 7.8 Hours

Environment

Temp: -165 °C

Axial Tilt: 25.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 92,215,469 km

• M1: 130,599 km (0.115 R)
• M2: 480,060 km (0.097 R)
• M3: 870,061 km (0.107 R)
• M4: 1,561,951 km (0.101 R)
• M5: 2,466,869 km (0.083 R)
• M6: 3,549,060 km (0.09 R)
• M7: 3,950,581 km (0.069 R)
• M8: 4,293,459 km (0.04 R)
• M9: 5,178,779 km (0.026 R)
• M10: 6,503,917 km (0.113 R)
• M11: 8,624,766 km (0.112 R)
• M12: 9,175,436 km (0.112 R)
• M13: 9,873,160 km (0.048 R)
• M14: 10,379,250 km (0.088 R)
• M15: 11,170,623 km (0.088 R)

Planet 5 - Ice Giant

Semi-Major Axis: 6.39 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 127

Radius: 6.4

Gravity: 3.1 G

Time & Orbit

Eccentricity (e): 0.232

Orbit Range: 4.91 AU - 7.87 AU

Year: 10596 Days

Day: 15.8 Hours

Environment

Temp: -231 °C

Axial Tilt: 27.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 92,215,469 km

• M1: 83,326 km (0.041 R)
• M2: 341,981 km (0.082 R)
• M3: 589,116 km (0.103 R)
• M4: 999,164 km (0.049 R)
• M5: 1,202,916 km (0.076 R)
• M6: 1,457,083 km (0.106 R)
• M7: 2,643,843 km (0.052 R)
• M8: 4,320,985 km (0.05 R)
• M9: 11,054,684 km (0.062 R)
• M10: 11,887,944 km (0.116 R)
• M11: 14,529,544 km (0.091 R)
• M12: 15,246,417 km (0.089 R)
• M13: 17,972,838 km (0.103 R)
• M14: 19,516,688 km (0.105 R)
• M15: 21,147,005 km (0.115 R)
• M16: 25,299,992 km (0.073 R)
• M17: 27,317,768 km (0.079 R)

Planet 6 - Ice Giant

Semi-Major Axis: 7.6 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 318.2

Radius: 3.5

Gravity: 25.98 G

Time & Orbit

Eccentricity (e): 0.215

Orbit Range: 5.97 AU - 9.23 AU

Year: 13745 Days

Day: 20.2 Hours

Environment

Temp: -226 °C

Axial Tilt: 20.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (35)

Outer Limit: 92,215,469 km

• M1: 43,533 km (0.045 R)
• M2: 242,049 km (0.111 R)
• M3: 438,471 km (0.116 R)
• M4: 742,903 km (0.061 R)
• M5: 1,018,014 km (0.041 R)
• M6: 1,220,569 km (0.087 R)
• M7: 1,409,362 km (0.104 R)
• M8: 2,200,435 km (0.12 R)
• M9: 2,721,484 km (0.106 R)
• M10: 4,056,496 km (0.068 R)
• M11: 4,594,001 km (0.075 R)
• M12: 6,269,348 km (0.063 R)
• M13: 7,343,311 km (0.109 R)
• M14: 7,588,352 km (0.092 R)
• M15: 8,051,956 km (0.029 R)
• M16: 8,805,031 km (0.11 R)
• M17: 9,175,137 km (0.052 R)
• M18: 9,700,973 km (0.073 R)
• M19: 10,707,916 km (0.113 R)
• M20: 12,288,867 km (0.088 R)
• M21: 14,715,195 km (0.117 R)
• M22: 17,298,899 km (0.114 R)
• M23: 18,173,598 km (0.108 R)
• M24: 21,384,567 km (0.04 R)
• M25: 22,052,372 km (0.074 R)
• M26: 29,511,022 km (0.052 R)
• M27: 30,129,909 km (0.094 R)
• M28: 33,465,941 km (0.052 R)
• M29: 36,211,661 km (0.058 R)
• M30: 36,802,123 km (0.097 R)
• M31: 40,101,056 km (0.102 R)
• M32: 42,406,658 km (0.071 R)
• M33: 42,537,257 km (0.115 R)
• M34: 42,668,155 km (0.088 R)
• M35: 45,615,981 km (0.086 R)

Planet 7 - Ice Giant

Semi-Major Axis: 10.76 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 909.8

Radius: 6.5

Gravity: 21.53 G

Time & Orbit

Eccentricity (e): 0.117

Orbit Range: 9.5 AU - 12.02 AU

Year: 23154 Days

Day: 17.2 Hours

Environment

Temp: -238 °C

Axial Tilt: 37.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (31)

Outer Limit: 92,215,469 km

• M1: 80,932 km (0.12 R)
• M2: 533,466 km (0.095 R)
• M3: 753,524 km (0.114 R)
• M4: 971,189 km (0.091 R)
• M5: 3,513,755 km (0.064 R)
• M6: 4,031,064 km (0.114 R)
• M7: 4,785,636 km (0.118 R)
• M8: 7,304,415 km (0.056 R)
• M9: 8,145,305 km (0.078 R)
• M10: 8,874,594 km (0.105 R)
• M11: 10,080,353 km (0.056 R)
• M12: 12,088,106 km (0.093 R)
• M13: 12,519,547 km (0.113 R)
• M14: 16,435,121 km (0.088 R)
• M15: 19,783,570 km (0.12 R)
• M16: 20,382,560 km (0.12 R)
• M17: 24,120,413 km (0.09 R)
• M18: 31,818,719 km (0.101 R)
• M19: 33,899,925 km (0.086 R)
• M20: 36,070,291 km (0.109 R)
• M21: 41,491,269 km (0.1 R)
• M22: 52,571,983 km (0.084 R)
• M23: 52,952,859 km (0.105 R)
• M24: 56,264,507 km (0.113 R)
• M25: 56,862,899 km (0.09 R)
• M26: 59,505,096 km (0.095 R)
• M27: 63,297,103 km (0.106 R)
• M28: 64,161,031 km (0.089 R)
• M29: 74,429,279 km (0.066 R)
• M30: 75,150,341 km (0.066 R)
• M31: 82,618,865 km (0.112 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: 205 - 13,765 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit