🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.33 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.65 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.14

Radius: 1.36

Gravity: 1.16 G

Time & Orbit

Eccentricity (e): 0.05

Orbit Range: 0.62 AU - 0.68 AU

Year: 344 Days

Day: 29.6 Hours

Environment

Temp: -131 °C

Axial Tilt: 33.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 54,065,270 km

• M1: 187,895 km (0.077 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.71 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 58.5

Radius: 10.9

Gravity: 0.49 G

Time & Orbit

Eccentricity (e): 0.084

Orbit Range: 0.65 AU - 0.77 AU

Year: 392 Days

Day: 9 Hours

Environment

Temp: -147 °C

Axial Tilt: 138.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (5)

Outer Limit: 54,065,270 km

• M1: 135,536 km (0.102 R)
• M2: 573,259 km (0.077 R)
• M3: 1,244,953 km (0.103 R)
• M4: 1,589,627 km (0.087 R)
• M5: 2,256,235 km (0.076 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.83 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 431.6

Radius: 12.2

Gravity: 2.9 G

Time & Orbit

Eccentricity (e): 0.096

Orbit Range: 0.75 AU - 0.91 AU

Year: 496 Days

Day: 9.3 Hours

Environment

Temp: -149 °C

Axial Tilt: 5.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 54,065,270 km

• M1: 151,692 km (0.062 R)
• M2: 540,198 km (0.105 R)
• M3: 1,029,981 km (0.097 R)
• M4: 1,437,785 km (0.093 R)
• M5: 1,909,018 km (0.088 R)
• M6: 2,373,969 km (0.087 R)
• M7: 2,966,526 km (0.106 R)
• M8: 4,763,495 km (0.115 R)
• M9: 5,324,188 km (0.042 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.87 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 828.4

Radius: 13.8

Gravity: 4.35 G

Time & Orbit

Eccentricity (e): 0.198

Orbit Range: 0.7 AU - 1.04 AU

Year: 532 Days

Day: 11.7 Hours

Environment

Temp: -150 °C

Axial Tilt: 3.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 54,065,270 km

• M1: 171,738 km (0.027 R)
• M2: 619,784 km (0.061 R)
• M3: 1,091,017 km (0.08 R)
• M4: 1,576,762 km (0.065 R)
• M5: 2,038,421 km (0.037 R)
• M6: 2,529,850 km (0.064 R)
• M7: 3,100,565 km (0.085 R)
• M8: 3,893,285 km (0.06 R)
• M9: 4,721,907 km (0.082 R)
• M10: 5,505,650 km (0.055 R)
• M11: 6,258,726 km (0.09 R)
• M12: 7,184,438 km (0.053 R)

Planet 5 - Gas Giant

Semi-Major Axis: 0.92 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 159.3

Radius: 12

Gravity: 1.11 G

Time & Orbit

Eccentricity (e): 0.183

Orbit Range: 0.75 AU - 1.09 AU

Year: 579 Days

Day: 14.2 Hours

Environment

Temp: -159 °C

Axial Tilt: 22.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 54,065,270 km

• M1: 149,299 km (0.088 R)
• M2: 820,245 km (0.03 R)
• M3: 1,209,798 km (0.09 R)
• M4: 1,642,585 km (0.101 R)
• M5: 2,945,881 km (0.047 R)
• M6: 3,360,716 km (0.117 R)
• M7: 4,296,900 km (0.11 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.7 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 684.9

Radius: 9.4

Gravity: 7.75 G

Time & Orbit

Eccentricity (e): 0.163

Orbit Range: 1.42 AU - 1.98 AU

Year: 1454 Days

Day: 5.1 Hours

Environment

Temp: -180 °C

Axial Tilt: 15.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 54,065,270 km

• M1: 116,986 km (0.073 R)
• M2: 478,713 km (0.118 R)
• M3: 820,844 km (0.063 R)
• M4: 1,132,456 km (0.041 R)
• M5: 1,921,734 km (0.08 R)
• M6: 2,898,010 km (0.092 R)
• M7: 3,232,660 km (0.088 R)
• M8: 3,980,201 km (0.116 R)
• M9: 4,545,980 km (0.096 R)
• M10: 4,858,490 km (0.093 R)
• M11: 5,681,129 km (0.104 R)
• M12: 6,767,508 km (0.101 R)
• M13: 7,439,801 km (0.103 R)
• M14: 8,071,104 km (0.101 R)
• M15: 8,385,409 km (0.104 R)
• M16: 9,377,842 km (0.113 R)
• M17: 9,725,507 km (0.114 R)
• M18: 10,786,156 km (0.091 R)
• M19: 11,273,546 km (0.071 R)
• M20: 12,786,280 km (0.106 R)
• M21: 13,253,623 km (0.108 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.35 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 494.2

Radius: 9.2

Gravity: 5.84 G

Time & Orbit

Eccentricity (e): 0.233

Orbit Range: 2.57 AU - 4.13 AU

Year: 4022 Days

Day: 6 Hours

Environment

Temp: -196 °C

Axial Tilt: 27.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 54,065,270 km

• M1: 114,442 km (0.112 R)
• M2: 543,339 km (0.095 R)
• M3: 1,916,498 km (0.081 R)
• M4: 2,398,203 km (0.074 R)
• M5: 2,741,082 km (0.112 R)
• M6: 3,028,310 km (0.106 R)
• M7: 4,522,942 km (0.057 R)
• M8: 5,353,659 km (0.101 R)
• M9: 5,670,058 km (0.109 R)
• M10: 6,516,184 km (0.111 R)
• M11: 8,924,411 km (0.089 R)
• M12: 9,675,990 km (0.055 R)
• M13: 10,632,818 km (0.033 R)
• M14: 11,262,027 km (0.047 R)
• M15: 11,695,262 km (0.119 R)
• M16: 12,004,930 km (0.118 R)
• M17: 13,783,499 km (0.101 R)
• M18: 16,382,313 km (0.097 R)
• M19: 16,714,720 km (0.1 R)
• M20: 18,207,407 km (0.112 R)
• M21: 18,744,164 km (0.06 R)
• M22: 20,932,482 km (0.116 R)
• M23: 21,720,564 km (0.106 R)

Planet 8 - Ice Giant

Semi-Major Axis: 7.84 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 474

Radius: 3.5

Gravity: 38.69 G

Time & Orbit

Eccentricity (e): 0.124

Orbit Range: 6.87 AU - 8.81 AU

Year: 14401 Days

Day: 20.2 Hours

Environment

Temp: -223 °C

Axial Tilt: 23.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (31)

Outer Limit: 54,065,270 km

• M1: 57,745 km (0.094 R)
• M2: 225,893 km (0.103 R)
• M3: 414,087 km (0.082 R)
• M4: 744,549 km (0.111 R)
• M5: 2,002,667 km (0.106 R)
• M6: 2,242,622 km (0.079 R)
• M7: 2,757,837 km (0.059 R)
• M8: 2,984,478 km (0.074 R)
• M9: 6,516,633 km (0.066 R)
• M10: 7,209,570 km (0.085 R)
• M11: 8,502,844 km (0.043 R)
• M12: 13,169,250 km (0.059 R)
• M13: 13,810,427 km (0.063 R)
• M14: 14,138,794 km (0.099 R)
• M15: 14,674,803 km (0.115 R)
• M16: 14,947,819 km (0.063 R)
• M17: 18,022,654 km (0.074 R)
• M18: 18,178,684 km (0.101 R)
• M19: 19,215,547 km (0.092 R)
• M20: 21,232,127 km (0.111 R)
• M21: 22,652,110 km (0.111 R)
• M22: 27,806,504 km (0.035 R)
• M23: 32,637,618 km (0.07 R)
• M24: 35,007,248 km (0.109 R)
• M25: 35,372,267 km (0.037 R)
• M26: 36,732,411 km (0.114 R)
• M27: 39,688,465 km (0.027 R)
• M28: 39,820,560 km (0.11 R)
• M29: 44,059,415 km (0.098 R)
• M30: 50,577,694 km (0.117 R)
• M31: 54,065,269 km (0.047 R)

Kuiper Belt

Range: 30 - 47 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 323 - 13,263 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit