🌌 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: 0.66 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.35

Radius: 1.8

Gravity: 1.34 G

Time & Orbit

Eccentricity (e): 0.213

Orbit Range: 0.52 AU - 0.8 AU

Year: 352 Days

Day: 41.4 Hours

Environment

Temp: -130 °C

Axial Tilt: 13.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.79 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 155.3

Radius: 10.5

Gravity: 1.41 G

Time & Orbit

Eccentricity (e): 0.115

Orbit Range: 0.7 AU - 0.88 AU

Year: 461 Days

Day: 13.7 Hours

Environment

Temp: -146 °C

Axial Tilt: 20.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 40,131,726 km

• M1: 130,599 km (0.075 R)
• M2: 474,375 km (0.088 R)
• M3: 890,407 km (0.098 R)
• M4: 1,230,742 km (0.11 R)
• M5: 1,611,468 km (0.078 R)
• M6: 2,233,496 km (0.103 R)
• M7: 2,626,340 km (0.08 R)
• M8: 3,018,436 km (0.116 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.9 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 794.6

Radius: 8.2

Gravity: 11.82 G

Time & Orbit

Eccentricity (e): 0.108

Orbit Range: 0.8 AU - 1 AU

Year: 560 Days

Day: 13.7 Hours

Environment

Temp: -159 °C

Axial Tilt: 11.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 40,131,726 km

• M1: 102,026 km (0.105 R)
• M2: 363,224 km (0.104 R)
• M3: 656,136 km (0.079 R)
• M4: 921,224 km (0.108 R)
• M5: 1,272,479 km (0.038 R)
• M6: 1,535,323 km (0.098 R)
• M7: 2,089,583 km (0.103 R)
• M8: 2,815,881 km (0.1 R)
• M9: 3,525,872 km (0.089 R)
• M10: 4,023,584 km (0.11 R)
• M11: 4,457,717 km (0.109 R)
• M12: 4,775,164 km (0.085 R)
• M13: 5,950,405 km (0.093 R)
• M14: 6,474,596 km (0.037 R)
• M15: 6,882,549 km (0.101 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.93 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 760.5

Radius: 10.2

Gravity: 7.31 G

Time & Orbit

Eccentricity (e): 0.039

Orbit Range: 0.89 AU - 0.97 AU

Year: 588 Days

Day: 9.9 Hours

Environment

Temp: -157 °C

Axial Tilt: 20.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 40,131,726 km

• M1: 126,859 km (0.064 R)
• M2: 538,253 km (0.057 R)
• M3: 873,801 km (0.037 R)
• M4: 1,354,908 km (0.098 R)
• M5: 1,835,416 km (0.062 R)
• M6: 2,287,651 km (0.113 R)
• M7: 2,802,267 km (0.071 R)
• M8: 3,366,999 km (0.041 R)
• M9: 4,049,465 km (0.098 R)
• M10: 4,377,832 km (0.116 R)
• M11: 5,071,667 km (0.063 R)
• M12: 5,597,952 km (0.118 R)
• M13: 6,515,436 km (0.116 R)
• M14: 7,073,885 km (0.106 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.61 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 618.5

Radius: 13.8

Gravity: 3.25 G

Time & Orbit

Eccentricity (e): 0.03

Orbit Range: 3.5 AU - 3.72 AU

Year: 4500 Days

Day: 12.8 Hours

Environment

Temp: -201 °C

Axial Tilt: 17.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 40,131,726 km

• M1: 173,085 km (0.107 R)
• M2: 715,676 km (0.075 R)
• M3: 1,411,905 km (0.087 R)
• M4: 2,145,832 km (0.111 R)
• M5: 2,768,608 km (0.045 R)
• M6: 3,799,786 km (0.065 R)
• M7: 4,334,299 km (0.045 R)
• M8: 5,230,690 km (0.104 R)
• M9: 6,739,683 km (0.061 R)
• M10: 7,493,058 km (0.101 R)
• M11: 8,485,341 km (0.085 R)
• M12: 9,013,421 km (0.077 R)
• M13: 10,345,590 km (0.089 R)
• M14: 11,621,511 km (0.119 R)
• M15: 14,064,145 km (0.057 R)
• M16: 14,751,547 km (0.067 R)
• M17: 15,516,890 km (0.098 R)
• M18: 21,084,324 km (0.1 R)
• M19: 24,312,945 km (0.102 R)
• M20: 24,843,120 km (0.067 R)

Planet 6 - Gas Giant

Semi-Major Axis: 5.02 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 767

Radius: 10.5

Gravity: 6.96 G

Time & Orbit

Eccentricity (e): 0.23

Orbit Range: 3.87 AU - 6.17 AU

Year: 7378 Days

Day: 8.5 Hours

Environment

Temp: -221 °C

Axial Tilt: 42.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 40,131,726 km

• M1: 130,749 km (0.105 R)
• M2: 489,933 km (0.027 R)
• M3: 1,010,384 km (0.101 R)
• M4: 1,973,794 km (0.094 R)
• M5: 2,762,474 km (0.097 R)
• M6: 3,196,757 km (0.067 R)
• M7: 3,871,593 km (0.112 R)
• M8: 5,599,897 km (0.092 R)
• M9: 6,761,076 km (0.114 R)
• M10: 8,750,578 km (0.054 R)
• M11: 10,212,299 km (0.05 R)
• M12: 11,051,991 km (0.054 R)
• M13: 11,937,012 km (0.09 R)
• M14: 13,266,190 km (0.091 R)
• M15: 13,671,899 km (0.101 R)
• M16: 14,026,147 km (0.105 R)
• M17: 18,125,727 km (0.116 R)
• M18: 18,481,770 km (0.084 R)
• M19: 20,562,975 km (0.086 R)
• M20: 23,715,750 km (0.094 R)
• M21: 28,690,029 km (0.086 R)
• M22: 30,659,036 km (0.091 R)
• M23: 31,471,353 km (0.086 R)
• M24: 33,886,461 km (0.047 R)
• M25: 35,860,854 km (0.107 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.37 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 380

Radius: 14.8

Gravity: 1.73 G

Time & Orbit

Eccentricity (e): 0.186

Orbit Range: 4.37 AU - 6.37 AU

Year: 8163 Days

Day: 10 Hours

Environment

Temp: -223 °C

Axial Tilt: 6.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 40,131,726 km

• M1: 184,155 km (0.061 R)
• M2: 1,089,521 km (0.083 R)
• M3: 2,002,966 km (0.115 R)
• M4: 2,474,050 km (0.085 R)
• M5: 4,087,762 km (0.115 R)
• M6: 6,689,119 km (0.118 R)
• M7: 7,649,238 km (0.102 R)
• M8: 12,955,624 km (0.046 R)
• M9: 14,219,128 km (0.075 R)
• M10: 19,819,923 km (0.113 R)
• M11: 23,902,000 km (0.094 R)
• M12: 25,715,276 km (0.092 R)
• M13: 31,124,585 km (0.035 R)
• M14: 31,996,591 km (0.064 R)
• M15: 33,284,778 km (0.114 R)

Planet 8 - Gas Giant

Semi-Major Axis: 5.42 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 424.7

Radius: 10.2

Gravity: 4.08 G

Time & Orbit

Eccentricity (e): 0.071

Orbit Range: 5.04 AU - 5.8 AU

Year: 8278 Days

Day: 6.6 Hours

Environment

Temp: -220 °C

Axial Tilt: 26.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 40,131,726 km

• M1: 127,457 km (0.107 R)
• M2: 468,989 km (0.075 R)
• M3: 810,222 km (0.102 R)
• M4: 1,614,161 km (0.106 R)
• M5: 3,185,537 km (0.081 R)
• M6: 4,299,742 km (0.058 R)
• M7: 4,889,906 km (0.093 R)
• M8: 5,502,808 km (0.06 R)
• M9: 8,397,676 km (0.115 R)
• M10: 9,539,557 km (0.065 R)
• M11: 10,124,784 km (0.037 R)
• M12: 12,655,082 km (0.09 R)
• M13: 12,978,064 km (0.071 R)
• M14: 16,970,382 km (0.103 R)
• M15: 18,100,295 km (0.09 R)
• M16: 21,332,806 km (0.07 R)
• M17: 22,569,232 km (0.12 R)
• M18: 26,653,105 km (0.117 R)
• M19: 28,361,064 km (0.104 R)
• M20: 29,476,764 km (0.107 R)
• M21: 29,854,948 km (0.057 R)
• M22: 32,093,530 km (0.111 R)
• M23: 32,695,363 km (0.111 R)
• M24: 34,546,187 km (0.067 R)
• M25: 34,966,707 km (0.103 R)

Planet 9 - Ice Giant

Semi-Major Axis: 7.58 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 214.5

Radius: 5.2

Gravity: 7.93 G

Time & Orbit

Eccentricity (e): 0.156

Orbit Range: 6.4 AU - 8.76 AU

Year: 13690 Days

Day: 15.2 Hours

Environment

Temp: -227 °C

Axial Tilt: 20.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 40,131,726 km

• M1: 83,027 km (0.107 R)
• M2: 736,919 km (0.037 R)
• M3: 1,124,976 km (0.073 R)
• M4: 1,440,029 km (0.025 R)
• M5: 2,045,152 km (0.079 R)
• M6: 2,386,984 km (0.101 R)
• M7: 2,969,967 km (0.112 R)
• M8: 4,093,147 km (0.088 R)
• M9: 4,924,313 km (0.115 R)
• M10: 11,017,434 km (0.089 R)
• M11: 15,844,359 km (0.08 R)
• M12: 16,235,109 km (0.115 R)
• M13: 18,715,292 km (0.037 R)
• M14: 23,057,370 km (0.056 R)
• M15: 25,283,835 km (0.119 R)
• M16: 33,237,655 km (0.089 R)

Kuiper Belt

Range: 30 - 55 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 513 - 12,636 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit