🌌 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: 0.61 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.45

Radius: 1.16

Gravity: 1.08 G

Time & Orbit

Eccentricity (e): 0.242

Orbit Range: 0.46 AU - 0.76 AU

Year: 313 Days

Day: 29.7 Hours

Environment

Temp: -122 °C

Axial Tilt: 7.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.89 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 792.8

Radius: 8.3

Gravity: 11.51 G

Time & Orbit

Eccentricity (e): 0.179

Orbit Range: 0.73 AU - 1.05 AU

Year: 551 Days

Day: 12.9 Hours

Environment

Temp: -153 °C

Axial Tilt: 20.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 75,358,498 km

• M1: 103,223 km (0.083 R)
• M2: 388,057 km (0.115 R)
• M3: 678,277 km (0.069 R)
• M4: 1,084,285 km (0.099 R)
• M5: 1,412,353 km (0.109 R)
• M6: 1,701,526 km (0.117 R)
• M7: 1,959,583 km (0.05 R)
• M8: 2,341,655 km (0.096 R)
• M9: 3,001,831 km (0.089 R)
• M10: 3,684,745 km (0.1 R)
• M11: 4,019,994 km (0.081 R)
• M12: 4,671,493 km (0.118 R)
• M13: 4,964,405 km (0.116 R)
• M14: 6,261,120 km (0.097 R)
• M15: 6,698,843 km (0.112 R)
• M16: 7,135,669 km (0.03 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.06 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 285.1

Radius: 12.1

Gravity: 1.95 G

Time & Orbit

Eccentricity (e): 0.11

Orbit Range: 0.94 AU - 1.18 AU

Year: 716 Days

Day: 7.5 Hours

Environment

Temp: -171 °C

Axial Tilt: 9.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 75,358,498 km

• M1: 150,495 km (0.103 R)
• M2: 535,710 km (0.09 R)
• M3: 912,098 km (0.035 R)
• M4: 2,277,927 km (0.11 R)
• M5: 2,866,744 km (0.103 R)
• M6: 3,373,432 km (0.106 R)
• M7: 4,033,159 km (0.096 R)
• M8: 4,777,258 km (0.092 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.66 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 177

Radius: 14.5

Gravity: 0.84 G

Time & Orbit

Eccentricity (e): 0.143

Orbit Range: 1.42 AU - 1.9 AU

Year: 1403 Days

Day: 13.3 Hours

Environment

Temp: -185 °C

Axial Tilt: 66 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 75,358,498 km

• M1: 181,462 km (0.119 R)
• M2: 744,249 km (0.042 R)
• M3: 1,212,640 km (0.093 R)
• M4: 1,721,273 km (0.111 R)
• M5: 2,364,095 km (0.113 R)
• M6: 3,102,959 km (0.111 R)
• M7: 4,465,347 km (0.109 R)
• M8: 5,362,784 km (0.054 R)
• M9: 6,963,332 km (0.078 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.16 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 142.2

Radius: 11.8

Gravity: 1.02 G

Time & Orbit

Eccentricity (e): 0.245

Orbit Range: 1.63 AU - 2.69 AU

Year: 2083 Days

Day: 10.4 Hours

Environment

Temp: -198 °C

Axial Tilt: 37.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 75,358,498 km

• M1: 161,715 km (0.081 R)
• M2: 560,842 km (0.049 R)
• M3: 1,096,852 km (0.078 R)
• M4: 2,290,194 km (0.104 R)
• M5: 3,531,108 km (0.065 R)
• M6: 4,632,148 km (0.059 R)
• M7: 5,195,983 km (0.096 R)
• M8: 5,825,640 km (0.073 R)
• M9: 7,261,331 km (0.072 R)
• M10: 8,784,836 km (0.086 R)
• M11: 9,593,412 km (0.075 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.57 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 823.4

Radius: 10.5

Gravity: 7.47 G

Time & Orbit

Eccentricity (e): 0.067

Orbit Range: 2.4 AU - 2.74 AU

Year: 2703 Days

Day: 10.4 Hours

Environment

Temp: -208 °C

Axial Tilt: 5.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 75,358,498 km

• M1: 130,599 km (0.098 R)
• M2: 652,396 km (0.079 R)
• M3: 1,177,186 km (0.095 R)
• M4: 1,537,268 km (0.102 R)
• M5: 2,205,073 km (0.055 R)
• M6: 2,825,305 km (0.114 R)
• M7: 6,053,627 km (0.047 R)
• M8: 6,671,616 km (0.074 R)
• M9: 7,581,770 km (0.119 R)
• M10: 8,676,228 km (0.026 R)
• M11: 9,135,194 km (0.066 R)
• M12: 9,573,067 km (0.048 R)
• M13: 10,451,805 km (0.11 R)
• M14: 11,094,328 km (0.112 R)
• M15: 12,150,489 km (0.093 R)
• M16: 12,546,773 km (0.111 R)
• M17: 13,551,772 km (0.103 R)
• M18: 13,930,255 km (0.081 R)
• M19: 15,773,450 km (0.087 R)
• M20: 16,192,324 km (0.111 R)
• M21: 16,618,827 km (0.101 R)
• M22: 17,549,775 km (0.099 R)
• M23: 17,943,068 km (0.084 R)
• M24: 19,515,641 km (0.037 R)
• M25: 20,489,822 km (0.095 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.72 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 544.8

Radius: 8.6

Gravity: 7.37 G

Time & Orbit

Eccentricity (e): 0.239

Orbit Range: 2.83 AU - 4.61 AU

Year: 4707 Days

Day: 6.5 Hours

Environment

Temp: -203 °C

Axial Tilt: 42.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (31)

Outer Limit: 75,358,498 km

• M1: 110,553 km (0.063 R)
• M2: 395,836 km (0.097 R)
• M3: 688,150 km (0.1 R)
• M4: 984,055 km (0.099 R)
• M5: 1,898,098 km (0.113 R)
• M6: 3,011,854 km (0.035 R)
• M7: 3,699,256 km (0.112 R)
• M8: 4,002,042 km (0.113 R)
• M9: 4,584,277 km (0.109 R)
• M10: 4,908,755 km (0.116 R)
• M11: 5,248,492 km (0.118 R)
• M12: 5,859,300 km (0.08 R)
• M13: 6,609,982 km (0.105 R)
• M14: 7,389,686 km (0.067 R)
• M15: 7,662,702 km (0.118 R)
• M16: 7,977,905 km (0.044 R)
• M17: 8,411,739 km (0.12 R)
• M18: 8,747,436 km (0.098 R)
• M19: 9,091,960 km (0.098 R)
• M20: 9,366,173 km (0.107 R)
• M21: 10,561,759 km (0.081 R)
• M22: 11,398,460 km (0.114 R)
• M23: 11,809,854 km (0.105 R)
• M24: 13,203,209 km (0.089 R)
• M25: 14,756,633 km (0.119 R)
• M26: 16,485,985 km (0.062 R)
• M27: 17,249,981 km (0.082 R)
• M28: 18,408,766 km (0.065 R)
• M29: 19,295,133 km (0.041 R)
• M30: 23,272,642 km (0.12 R)
• M31: 24,990,623 km (0.096 R)

Planet 8 - Gas Giant

Semi-Major Axis: 3.92 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 26.8

Radius: 10.6

Gravity: 0.24 G

Time & Orbit

Eccentricity (e): 0.208

Orbit Range: 3.1 AU - 4.74 AU

Year: 5091 Days

Day: 8.5 Hours

Environment

Temp: -214 °C

Axial Tilt: 8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 75,358,498 km

• M1: 133,292 km (0.075 R)
• M2: 605,722 km (0.108 R)
• M3: 3,282,177 km (0.056 R)
• M4: 5,515,374 km (0.105 R)
• M5: 6,422,685 km (0.085 R)
• M6: 6,807,750 km (0.094 R)
• M7: 7,232,309 km (0.107 R)
• M8: 8,585,871 km (0.105 R)
• M9: 9,891,561 km (0.118 R)

Asteroid Belt

Center: 5.33 AU

Composition

Type: Outer System (Icy)

A dense region of planetesimals and debris.

Boundary

Planet 9 - Ice Giant

Semi-Major Axis: 6.74 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 805.6

Radius: 4

Gravity: 50.35 G

Time & Orbit

Eccentricity (e): 0.216

Orbit Range: 5.28 AU - 8.2 AU

Year: 11479 Days

Day: 19.8 Hours

Environment

Temp: -229 °C

Axial Tilt: 21 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (37)

Outer Limit: 75,358,498 km

• M1: 50,115 km (0.114 R)
• M2: 215,271 km (0.114 R)
• M3: 394,938 km (0.106 R)
• M4: 1,781,860 km (0.036 R)
• M5: 2,325,349 km (0.115 R)
• M6: 2,613,924 km (0.116 R)
• M7: 3,114,777 km (0.042 R)
• M8: 3,623,111 km (0.106 R)
• M9: 4,364,368 km (0.074 R)
• M10: 4,966,201 km (0.077 R)
• M11: 5,408,861 km (0.065 R)
• M12: 6,333,076 km (0.108 R)
• M13: 13,644,672 km (0.12 R)
• M14: 15,059,270 km (0.09 R)
• M15: 16,867,160 km (0.065 R)
• M16: 17,784,344 km (0.09 R)
• M17: 18,018,764 km (0.059 R)
• M18: 18,413,852 km (0.098 R)
• M19: 19,058,170 km (0.118 R)
• M20: 21,343,727 km (0.114 R)
• M21: 24,763,235 km (0.094 R)
• M22: 29,720,011 km (0.084 R)
• M23: 30,605,630 km (0.113 R)
• M24: 32,662,302 km (0.037 R)
• M25: 35,298,814 km (0.096 R)
• M26: 38,203,257 km (0.065 R)
• M27: 38,855,055 km (0.116 R)
• M28: 40,584,406 km (0.113 R)
• M29: 40,719,643 km (0.032 R)
• M30: 41,536,597 km (0.117 R)
• M31: 44,053,132 km (0.103 R)
• M32: 45,786,074 km (0.092 R)
• M33: 49,850,349 km (0.12 R)
• M34: 51,099,192 km (0.11 R)
• M35: 51,414,694 km (0.1 R)
• M36: 53,496,797 km (0.112 R)
• M37: 55,136,090 km (0.053 R)

Planet 10 - Ice Giant

Semi-Major Axis: 8.77 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 917

Radius: 6.7

Gravity: 20.43 G

Time & Orbit

Eccentricity (e): 0.221

Orbit Range: 6.83 AU - 10.71 AU

Year: 17038 Days

Day: 19 Hours

Environment

Temp: -220 °C

Axial Tilt: 6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (36)

Outer Limit: 75,358,498 km

• M1: 86,617 km (0.107 R)
• M2: 327,320 km (0.113 R)
• M3: 1,176,886 km (0.104 R)
• M4: 1,516,174 km (0.11 R)
• M5: 1,753,586 km (0.064 R)
• M6: 1,976,786 km (0.106 R)
• M7: 3,283,224 km (0.096 R)
• M8: 4,148,947 km (0.077 R)
• M9: 4,829,019 km (0.096 R)
• M10: 5,233,532 km (0.088 R)
• M11: 5,581,048 km (0.116 R)
• M12: 12,002,387 km (0.115 R)
• M13: 13,232,081 km (0.118 R)
• M14: 13,588,124 km (0.105 R)
• M15: 15,153,516 km (0.083 R)
• M16: 15,622,057 km (0.119 R)
• M17: 18,638,100 km (0.065 R)
• M18: 22,723,318 km (0.029 R)
• M19: 23,131,272 km (0.039 R)
• M20: 26,572,322 km (0.088 R)
• M21: 27,713,903 km (0.096 R)
• M22: 31,083,894 km (0.117 R)
• M23: 41,892,041 km (0.091 R)
• M24: 43,750,047 km (0.058 R)
• M25: 45,339,674 km (0.114 R)
• M26: 46,802,891 km (0.115 R)
• M27: 48,129,824 km (0.114 R)
• M28: 50,339,085 km (0.031 R)
• M29: 51,032,322 km (0.098 R)
• M30: 52,971,260 km (0.106 R)
• M31: 54,049,411 km (0.106 R)
• M32: 56,621,747 km (0.092 R)
• M33: 60,241,716 km (0.098 R)
• M34: 64,215,634 km (0.115 R)
• M35: 66,059,577 km (0.055 R)
• M36: 74,458,750 km (0.115 R)

Kuiper Belt

Range: 30 - 51 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 304 - 11,400 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit