🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.29 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.58 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.29

Radius: 1.11

Gravity: 1.05 G

Time & Orbit

Eccentricity (e): 0.178

Orbit Range: 0.48 AU - 0.68 AU

Year: 290 Days

Day: 39.5 Hours

Environment

Temp: -125 °C

Axial Tilt: 5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.65 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.56

Radius: 1.19

Gravity: 1.1 G

Time & Orbit

Eccentricity (e): 0.222

Orbit Range: 0.51 AU - 0.79 AU

Year: 344 Days

Day: 40.5 Hours

Environment

Temp: -142 °C

Axial Tilt: 24.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.69 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 50.1

Radius: 13.9

Gravity: 0.26 G

Time & Orbit

Eccentricity (e): 0.083

Orbit Range: 0.63 AU - 0.75 AU

Year: 376 Days

Day: 8 Hours

Environment

Temp: -134 °C

Axial Tilt: 27.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (3)

Outer Limit: 56,346,246 km

• M1: 172,935 km (0.033 R)
• M2: 621,430 km (0.116 R)
• M3: 1,763,908 km (0.05 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.83 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 763.3

Radius: 13.1

Gravity: 4.45 G

Time & Orbit

Eccentricity (e): 0.013

Orbit Range: 0.82 AU - 0.84 AU

Year: 496 Days

Day: 5.9 Hours

Environment

Temp: -139 °C

Axial Tilt: 6.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 56,346,246 km

• M1: 162,912 km (0.11 R)
• M2: 575,653 km (0.111 R)
• M3: 1,165,367 km (0.081 R)
• M4: 1,648,718 km (0.103 R)
• M5: 2,398,652 km (0.098 R)
• M6: 3,047,757 km (0.119 R)
• M7: 3,565,067 km (0.064 R)
• M8: 4,225,691 km (0.11 R)
• M9: 4,919,077 km (0.067 R)
• M10: 6,174,353 km (0.12 R)

Planet 5 - Gas Giant

Semi-Major Axis: 0.94 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 308.1

Radius: 9.3

Gravity: 3.56 G

Time & Orbit

Eccentricity (e): 0.176

Orbit Range: 0.77 AU - 1.11 AU

Year: 598 Days

Day: 6.8 Hours

Environment

Temp: -152 °C

Axial Tilt: 45.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 56,346,246 km

• M1: 115,789 km (0.098 R)
• M2: 565,181 km (0.069 R)
• M3: 888,911 km (0.104 R)
• M4: 1,279,959 km (0.092 R)
• M5: 1,625,979 km (0.108 R)
• M6: 2,159,894 km (0.073 R)
• M7: 2,675,558 km (0.084 R)
• M8: 3,226,228 km (0.117 R)
• M9: 3,517,046 km (0.076 R)
• M10: 3,825,218 km (0.09 R)
• M11: 4,287,325 km (0.079 R)
• M12: 5,073,163 km (0.109 R)
• M13: 5,371,461 km (0.08 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.31 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 18

Radius: 8.6

Gravity: 0.24 G

Time & Orbit

Eccentricity (e): 0.151

Orbit Range: 1.96 AU - 2.66 AU

Year: 2303 Days

Day: 9.3 Hours

Environment

Temp: -194 °C

Axial Tilt: 52.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (4)

Outer Limit: 56,346,246 km

• M1: 112,498 km (0.067 R)
• M2: 556,953 km (0.054 R)
• M3: 1,643,183 km (0.094 R)
• M4: 2,937,205 km (0.105 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.58 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 922.5

Radius: 10.2

Gravity: 8.87 G

Time & Orbit

Eccentricity (e): 0.045

Orbit Range: 2.46 AU - 2.7 AU

Year: 2719 Days

Day: 9.5 Hours

Environment

Temp: -199 °C

Axial Tilt: 39.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 56,346,246 km

• M1: 126,859 km (0.1 R)
• M2: 606,470 km (0.1 R)
• M3: 1,033,871 km (0.101 R)
• M4: 1,477,728 km (0.11 R)
• M5: 2,390,873 km (0.118 R)
• M6: 3,091,290 km (0.093 R)
• M7: 4,480,905 km (0.077 R)
• M8: 5,289,482 km (0.112 R)
• M9: 6,710,362 km (0.087 R)
• M10: 8,932,489 km (0.113 R)
• M11: 10,053,874 km (0.073 R)
• M12: 12,349,304 km (0.114 R)
• M13: 14,077,459 km (0.111 R)
• M14: 15,802,472 km (0.117 R)
• M15: 16,497,952 km (0.099 R)

Planet 8 - Gas Giant

Semi-Major Axis: 5.37 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 344.2

Radius: 14

Gravity: 1.76 G

Time & Orbit

Eccentricity (e): 0.018

Orbit Range: 5.27 AU - 5.47 AU

Year: 8163 Days

Day: 10.1 Hours

Environment

Temp: -218 °C

Axial Tilt: 15.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 56,346,246 km

• M1: 174,282 km (0.081 R)
• M2: 769,531 km (0.096 R)
• M3: 1,289,833 km (0.062 R)
• M4: 2,422,887 km (0.101 R)
• M5: 3,111,636 km (0.074 R)
• M6: 3,790,361 km (0.118 R)
• M7: 4,337,889 km (0.058 R)
• M8: 5,683,074 km (0.099 R)
• M9: 6,534,734 km (0.068 R)
• M10: 7,542,874 km (0.095 R)
• M11: 8,894,790 km (0.115 R)
• M12: 11,677,909 km (0.077 R)
• M13: 13,375,246 km (0.119 R)
• M14: 15,349,490 km (0.064 R)
• M15: 17,254,618 km (0.114 R)
• M16: 18,497,478 km (0.039 R)
• M17: 19,381,751 km (0.039 R)
• M18: 22,661,684 km (0.086 R)
• M19: 24,473,464 km (0.046 R)
• M20: 29,286,177 km (0.11 R)

Planet 9 - Gas Giant

Semi-Major Axis: 5.59 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 495.7

Radius: 9.5

Gravity: 5.49 G

Time & Orbit

Eccentricity (e): 0.05

Orbit Range: 5.31 AU - 5.87 AU

Year: 8670 Days

Day: 9.9 Hours

Environment

Temp: -220 °C

Axial Tilt: 31.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (26)

Outer Limit: 56,346,246 km

• M1: 119,828 km (0.088 R)
• M2: 550,819 km (0.044 R)
• M3: 1,089,372 km (0.085 R)
• M4: 1,571,675 km (0.114 R)
• M5: 2,258,778 km (0.099 R)
• M6: 4,142,515 km (0.117 R)
• M7: 4,486,590 km (0.081 R)
• M8: 7,534,347 km (0.117 R)
• M9: 8,842,730 km (0.107 R)
• M10: 9,148,059 km (0.097 R)
• M11: 10,585,994 km (0.042 R)
• M12: 11,435,710 km (0.077 R)
• M13: 12,877,834 km (0.074 R)
• M14: 13,441,518 km (0.118 R)
• M15: 15,231,606 km (0.102 R)
• M16: 19,278,827 km (0.096 R)
• M17: 21,392,047 km (0.113 R)
• M18: 21,864,178 km (0.113 R)
• M19: 25,191,533 km (0.089 R)
• M20: 26,702,622 km (0.054 R)
• M21: 28,556,738 km (0.091 R)
• M22: 29,515,361 km (0.096 R)
• M23: 30,495,077 km (0.116 R)
• M24: 33,776,357 km (0.096 R)
• M25: 35,065,292 km (0.047 R)
• M26: 36,722,238 km (0.088 R)

Planet 10 - Ice Giant

Semi-Major Axis: 8.53 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 416.6

Radius: 5.7

Gravity: 12.82 G

Time & Orbit

Eccentricity (e): 0.104

Orbit Range: 7.64 AU - 9.42 AU

Year: 16343 Days

Day: 16.8 Hours

Environment

Temp: -235 °C

Axial Tilt: 41 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (26)

Outer Limit: 56,346,246 km

• M1: 72,256 km (0.054 R)
• M2: 257,009 km (0.113 R)
• M3: 501,153 km (0.111 R)
• M4: 908,657 km (0.075 R)
• M5: 2,674,660 km (0.103 R)
• M6: 3,539,186 km (0.09 R)
• M7: 4,240,202 km (0.12 R)
• M8: 4,482,999 km (0.116 R)
• M9: 4,864,624 km (0.077 R)
• M10: 6,294,480 km (0.075 R)
• M11: 6,773,044 km (0.09 R)
• M12: 7,847,456 km (0.063 R)
• M13: 9,130,556 km (0.078 R)
• M14: 9,433,642 km (0.09 R)
• M15: 10,274,831 km (0.105 R)
• M16: 12,656,728 km (0.082 R)
• M17: 13,744,155 km (0.111 R)
• M18: 13,942,372 km (0.101 R)
• M19: 14,412,109 km (0.076 R)
• M20: 14,892,468 km (0.075 R)
• M21: 16,323,521 km (0.114 R)
• M22: 17,378,186 km (0.12 R)
• M23: 21,783,544 km (0.045 R)
• M24: 25,068,115 km (0.035 R)
• M25: 28,240,488 km (0.055 R)
• M26: 35,615,962 km (0.089 R)

Kuiper Belt

Range: 30 - 56 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 374 - 11,009 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit