🌌 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: 2.67

Radius: 1.48

Gravity: 1.22 G

Time & Orbit

Eccentricity (e): 0.245

Orbit Range: 0.49 AU - 0.81 AU

Year: 338 Days

Day: 22.4 Hours

Environment

Temp: -128 °C

Axial Tilt: 0.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.95 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 936.8

Radius: 14.2

Gravity: 4.65 G

Time & Orbit

Eccentricity (e): 0.172

Orbit Range: 0.79 AU - 1.11 AU

Year: 598 Days

Day: 8 Hours

Environment

Temp: -160 °C

Axial Tilt: 9.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 68,843,010 km

• M1: 176,675 km (0.095 R)
• M2: 685,906 km (0.086 R)
• M3: 1,201,570 km (0.111 R)
• M4: 1,697,487 km (0.108 R)
• M5: 2,147,627 km (0.08 R)
• M6: 2,906,238 km (0.052 R)
• M7: 3,909,890 km (0.094 R)
• M8: 4,629,007 km (0.098 R)
• M9: 5,544,695 km (0.064 R)
• M10: 6,253,191 km (0.074 R)
• M11: 6,744,470 km (0.11 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 392.1

Radius: 12.6

Gravity: 2.47 G

Time & Orbit

Eccentricity (e): 0.209

Orbit Range: 0.79 AU - 1.21 AU

Year: 646 Days

Day: 9.4 Hours

Environment

Temp: -149 °C

Axial Tilt: 13.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 68,843,010 km

• M1: 156,779 km (0.09 R)
• M2: 574,905 km (0.092 R)
• M3: 1,307,785 km (0.041 R)
• M4: 1,920,687 km (0.089 R)
• M5: 2,537,928 km (0.061 R)
• M6: 3,020,531 km (0.107 R)
• M7: 3,440,751 km (0.11 R)
• M8: 3,900,166 km (0.082 R)
• M9: 4,547,027 km (0.108 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.23 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 612.4

Radius: 9.7

Gravity: 6.51 G

Time & Orbit

Eccentricity (e): 0.104

Orbit Range: 1.1 AU - 1.36 AU

Year: 881 Days

Day: 8.4 Hours

Environment

Temp: -160 °C

Axial Tilt: 11.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 68,843,010 km

• M1: 120,576 km (0.099 R)
• M2: 424,559 km (0.088 R)
• M3: 1,175,390 km (0.118 R)
• M4: 1,517,521 km (0.099 R)
• M5: 1,835,566 km (0.032 R)
• M6: 2,138,053 km (0.066 R)
• M7: 2,485,269 km (0.101 R)
• M8: 2,969,518 km (0.098 R)
• M9: 3,308,357 km (0.096 R)
• M10: 4,095,990 km (0.045 R)
• M11: 4,517,556 km (0.051 R)
• M12: 4,826,177 km (0.037 R)
• M13: 5,543,798 km (0.059 R)
• M14: 6,163,582 km (0.067 R)
• M15: 7,541,378 km (0.038 R)
• M16: 8,481,302 km (0.117 R)
• M17: 9,033,318 km (0.112 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.24 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 821.5

Radius: 8.3

Gravity: 11.92 G

Time & Orbit

Eccentricity (e): 0.224

Orbit Range: 1.74 AU - 2.74 AU

Year: 2165 Days

Day: 5.4 Hours

Environment

Temp: -187 °C

Axial Tilt: 23.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 68,843,010 km

• M1: 103,372 km (0.073 R)
• M2: 362,027 km (0.117 R)
• M3: 759,359 km (0.119 R)
• M4: 1,564,943 km (0.055 R)
• M5: 1,834,219 km (0.095 R)
• M6: 2,122,195 km (0.078 R)
• M7: 2,867,642 km (0.101 R)
• M8: 3,309,404 km (0.103 R)
• M9: 3,739,498 km (0.119 R)
• M10: 4,308,568 km (0.087 R)
• M11: 5,093,807 km (0.031 R)
• M12: 6,338,312 km (0.071 R)
• M13: 7,835,936 km (0.06 R)
• M14: 8,244,488 km (0.116 R)
• M15: 8,634,191 km (0.111 R)
• M16: 10,243,116 km (0.064 R)
• M17: 11,157,458 km (0.106 R)
• M18: 11,837,231 km (0.058 R)
• M19: 14,180,681 km (0.05 R)
• M20: 14,978,188 km (0.033 R)
• M21: 16,713,822 km (0.118 R)
• M22: 17,444,309 km (0.099 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.71 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 408.2

Radius: 8.2

Gravity: 6.07 G

Time & Orbit

Eccentricity (e): 0.244

Orbit Range: 2.8 AU - 4.62 AU

Year: 4614 Days

Day: 11.1 Hours

Environment

Temp: -203 °C

Axial Tilt: 43.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 68,843,010 km

• M1: 102,026 km (0.114 R)
• M2: 375,191 km (0.062 R)
• M3: 1,028,037 km (0.111 R)
• M4: 1,438,832 km (0.095 R)
• M5: 1,816,118 km (0.076 R)
• M6: 3,302,074 km (0.091 R)
• M7: 3,733,514 km (0.071 R)
• M8: 4,201,905 km (0.04 R)
• M9: 4,757,212 km (0.06 R)
• M10: 5,052,668 km (0.1 R)
• M11: 6,041,959 km (0.106 R)
• M12: 6,749,258 km (0.117 R)
• M13: 7,347,499 km (0.036 R)
• M14: 8,222,797 km (0.059 R)
• M15: 9,165,862 km (0.061 R)
• M16: 10,058,811 km (0.091 R)
• M17: 11,352,234 km (0.115 R)
• M18: 12,942,161 km (0.104 R)
• M19: 13,716,180 km (0.104 R)
• M20: 17,066,275 km (0.085 R)
• M21: 17,353,503 km (0.115 R)
• M22: 19,268,655 km (0.083 R)

Planet 7 - Ice Giant

Semi-Major Axis: 7.94 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 793.6

Radius: 4.8

Gravity: 34.44 G

Time & Orbit

Eccentricity (e): 0.164

Orbit Range: 6.64 AU - 9.24 AU

Year: 14446 Days

Day: 21.5 Hours

Environment

Temp: -229 °C

Axial Tilt: 0.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (36)

Outer Limit: 68,843,010 km

• M1: 59,690 km (0.115 R)
• M2: 243,695 km (0.074 R)
• M3: 416,032 km (0.114 R)
• M4: 638,035 km (0.11 R)
• M5: 872,754 km (0.07 R)
• M6: 1,324,839 km (0.115 R)
• M7: 1,532,032 km (0.093 R)
• M8: 1,709,754 km (0.106 R)
• M9: 2,068,639 km (0.108 R)
• M10: 3,185,088 km (0.095 R)
• M11: 5,205,557 km (0.118 R)
• M12: 5,386,720 km (0.085 R)
• M13: 6,563,756 km (0.045 R)
• M14: 6,904,540 km (0.061 R)
• M15: 8,288,171 km (0.056 R)
• M16: 10,236,833 km (0.076 R)
• M17: 10,464,221 km (0.119 R)
• M18: 14,363,490 km (0.089 R)
• M19: 18,961,231 km (0.116 R)
• M20: 19,826,804 km (0.12 R)
• M21: 20,448,084 km (0.058 R)
• M22: 21,450,689 km (0.105 R)
• M23: 22,011,083 km (0.039 R)
• M24: 22,390,164 km (0.119 R)
• M25: 27,175,052 km (0.071 R)
• M26: 29,862,278 km (0.084 R)
• M27: 30,796,068 km (0.106 R)
• M28: 31,508,902 km (0.035 R)
• M29: 34,343,931 km (0.117 R)
• M30: 36,677,658 km (0.113 R)
• M31: 41,083,914 km (0.12 R)
• M32: 41,947,542 km (0.049 R)
• M33: 43,860,151 km (0.109 R)
• M34: 47,071,419 km (0.119 R)
• M35: 49,135,720 km (0.065 R)
• M36: 60,183,672 km (0.075 R)

Planet 8 - Ice Giant

Semi-Major Axis: 9.79 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 654

Radius: 8

Gravity: 10.22 G

Time & Orbit

Eccentricity (e): 0.057

Orbit Range: 9.23 AU - 10.35 AU

Year: 19778 Days

Day: 19.1 Hours

Environment

Temp: -221 °C

Axial Tilt: 12.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (32)

Outer Limit: 68,843,010 km

• M1: 100,380 km (0.116 R)
• M2: 409,449 km (0.044 R)
• M3: 837,598 km (0.112 R)
• M4: 1,302,249 km (0.063 R)
• M5: 2,269,549 km (0.116 R)
• M6: 2,967,274 km (0.1 R)
• M7: 3,622,662 km (0.094 R)
• M8: 3,953,722 km (0.104 R)
• M9: 4,504,990 km (0.066 R)
• M10: 7,663,600 km (0.091 R)
• M11: 10,362,645 km (0.05 R)
• M12: 13,637,491 km (0.071 R)
• M13: 18,406,223 km (0.099 R)
• M14: 18,847,686 km (0.119 R)
• M15: 21,940,473 km (0.088 R)
• M16: 23,246,612 km (0.115 R)
• M17: 26,906,374 km (0.093 R)
• M18: 31,306,496 km (0.063 R)
• M19: 34,670,503 km (0.073 R)
• M20: 35,752,246 km (0.117 R)
• M21: 36,717,002 km (0.072 R)
• M22: 40,009,203 km (0.04 R)
• M23: 45,709,929 km (0.094 R)
• M24: 47,174,043 km (0.107 R)
• M25: 47,503,757 km (0.028 R)
• M26: 54,241,495 km (0.113 R)
• M27: 57,555,537 km (0.088 R)
• M28: 59,645,718 km (0.052 R)
• M29: 62,775,754 km (0.071 R)
• M30: 64,380,940 km (0.063 R)
• M31: 66,219,497 km (0.112 R)
• M32: 68,092,612 km (0.08 R)

Planet 9 - Ice Giant

Semi-Major Axis: 10.68 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 399.6

Radius: 3.1

Gravity: 41.58 G

Time & Orbit

Eccentricity (e): 0.192

Orbit Range: 8.63 AU - 12.73 AU

Year: 22536 Days

Day: 20.5 Hours

Environment

Temp: -230 °C

Axial Tilt: 32.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (37)

Outer Limit: 68,843,010 km

• M1: 38,596 km (0.034 R)
• M2: 261,647 km (0.092 R)
• M3: 370,704 km (0.12 R)
• M4: 548,725 km (0.085 R)
• M5: 791,373 km (0.079 R)
• M6: 1,469,500 km (0.106 R)
• M7: 1,769,294 km (0.074 R)
• M8: 2,009,997 km (0.103 R)
• M9: 2,148,375 km (0.111 R)
• M10: 3,329,600 km (0.118 R)
• M11: 5,063,589 km (0.118 R)
• M12: 5,741,267 km (0.077 R)
• M13: 6,308,393 km (0.035 R)
• M14: 7,600,320 km (0.099 R)
• M15: 8,847,218 km (0.114 R)
• M16: 10,993,648 km (0.083 R)
• M17: 15,274,990 km (0.056 R)
• M18: 21,577,548 km (0.101 R)
• M19: 22,543,352 km (0.057 R)
• M20: 24,456,858 km (0.087 R)
• M21: 24,873,189 km (0.112 R)
• M22: 25,400,073 km (0.059 R)
• M23: 26,367,074 km (0.086 R)
• M24: 27,358,459 km (0.073 R)
• M25: 30,123,027 km (0.112 R)
• M26: 37,560,285 km (0.075 R)
• M27: 42,892,402 km (0.102 R)
• M28: 43,954,846 km (0.111 R)
• M29: 45,034,793 km (0.12 R)
• M30: 47,730,697 km (0.108 R)
• M31: 48,054,726 km (0.072 R)
• M32: 49,035,788 km (0.107 R)
• M33: 53,965,936 km (0.042 R)
• M34: 54,848,115 km (0.087 R)
• M35: 61,293,539 km (0.109 R)
• M36: 64,598,754 km (0.092 R)
• M37: 65,194,004 km (0.074 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: 435 - 17,751 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit