G4V Star System Generated (Seed: 1767170991)
Star Details
Spectral Class: G9V
Temperature: 5,200 K
Mass: 0.9 sol
Luminosity: 0.69 lux
Habitable Zone (HZ)
Inner Boundary: 0.79 AU
Outer Boundary: 1.14 AU
Physical Limits
Snow Line: 3.99 AU
Max System Radius: 19 AU
Planetary System (7 Planets)
Planet 1 - Terrestrial
Semi-Major Axis: 3.66 AU
Status: Outer (Cold)
Composition: Rocky (Silicates/Metals)
Physical Data
Mass: 1.4
Radius: 1.14
Gravity: 1.08 G
Time & Orbit
Eccentricity (e): 0.178
Orbit Range: 3.01 AU - 4.31 AU
Year: 2696 Days
Day: 21.5 Hours
Environment
Temp: -138 °C
Axial Tilt: 98.1 °
Atmosphere: Thin Nâ‚‚/CHâ‚„
Biome: Ice Cap/Desert
Satellites (1)
Outer Limit: 93,564,356 km
- M1: 350,059 km (0.084 R)
Planet 2 - Gas Giant
Semi-Major Axis: 4.48 AU
Status: Outer (Cold)
Composition: Hydrogen/Helium Atmosphere
Physical Data
Mass: 383.3
Radius: 12
Gravity: 2.66 G
Time & Orbit
Eccentricity (e): 0.015
Orbit Range: 4.41 AU - 4.55 AU
Year: 3651 Days
Day: 13.7 Hours
Environment
Temp: -144 °C
Axial Tilt: 2.3 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (72)
Outer Limit: 93,564,356 km
- M1: 175,628 km (0.056 R)
- M2: 280,346 km (0.117 R)
- M3: 359,783 km (0.057 R)
- M4: 792,121 km (0.118 R)
- M5: 961,017 km (0.117 R)
- M6: 1,077,105 km (0.106 R)
- M7: 1,187,059 km (0.103 R)
- M8: 1,395,150 km (0.095 R)
- M9: 1,491,491 km (0.054 R)
- M10: 1,615,358 km (0.074 R)
- M11: 1,704,219 km (0.117 R)
- M12: 1,781,711 km (0.058 R)
- M13: 1,900,342 km (0.067 R)
- M14: 2,173,657 km (0.066 R)
- M15: 2,315,177 km (0.086 R)
- M16: 2,401,644 km (0.078 R)
- M17: 2,881,255 km (0.117 R)
- M18: 3,374,479 km (0.119 R)
- M19: 3,522,581 km (0.1 R)
- M20: 3,605,907 km (0.115 R)
- M21: 3,706,736 km (0.12 R)
- M22: 4,049,764 km (0.07 R)
- M23: 4,137,129 km (0.09 R)
- M24: 4,242,895 km (0.078 R)
- M25: 4,349,558 km (0.082 R)
- M26: 4,601,780 km (0.063 R)
- M27: 4,859,088 km (0.09 R)
- M28: 4,951,989 km (0.117 R)
- M29: 5,349,321 km (0.104 R)
- M30: 5,580,898 km (0.084 R)
- M31: 5,954,594 km (0.04 R)
- M32: 6,074,272 km (0.118 R)
- M33: 6,295,826 km (0.112 R)
- M34: 6,417,749 km (0.092 R)
- M35: 6,747,014 km (0.055 R)
- M36: 6,934,609 km (0.103 R)
- M37: 7,251,158 km (0.118 R)
- M38: 7,898,468 km (0.11 R)
- M39: 8,052,255 km (0.056 R)
- M40: 8,699,715 km (0.088 R)
- M41: 8,881,326 km (0.107 R)
- M42: 9,087,173 km (0.088 R)
- M43: 10,020,963 km (0.102 R)
- M44: 10,307,144 km (0.071 R)
- M45: 10,547,547 km (0.052 R)
- M46: 10,911,818 km (0.088 R)
- M47: 11,428,829 km (0.085 R)
- M48: 11,553,144 km (0.118 R)
- M49: 11,752,858 km (0.099 R)
- M50: 11,928,635 km (0.039 R)
- M51: 12,004,182 km (0.092 R)
- M52: 12,079,878 km (0.109 R)
- M53: 12,410,041 km (0.099 R)
- M54: 12,640,272 km (0.099 R)
- M55: 12,743,195 km (0.11 R)
- M56: 13,261,402 km (0.045 R)
- M57: 14,078,207 km (0.063 R)
- M58: 14,211,499 km (0.097 R)
- M59: 14,452,501 km (0.1 R)
- M60: 14,613,917 km (0.093 R)
- M61: 14,992,998 km (0.067 R)
- M62: 15,292,942 km (0.087 R)
- M63: 15,429,973 km (0.096 R)
- M64: 16,205,040 km (0.086 R)
- M65: 16,822,879 km (0.083 R)
- M66: 17,477,070 km (0.062 R)
- M67: 18,023,851 km (0.11 R)
- M68: 18,517,673 km (0.075 R)
- M69: 18,663,830 km (0.104 R)
- M70: 18,869,079 km (0.111 R)
- M71: 19,252,199 km (0.048 R)
- M72: 19,906,540 km (0.107 R)
Planet 3 - Gas Giant
Semi-Major Axis: 4.6 AU
Status: Outer (Cold)
Composition: Hydrogen/Helium Atmosphere
Physical Data
Mass: 680.9
Radius: 8.3
Gravity: 9.88 G
Time & Orbit
Eccentricity (e): 0.039
Orbit Range: 4.42 AU - 4.78 AU
Year: 3798 Days
Day: 9.7 Hours
Environment
Temp: -153 °C
Axial Tilt: 33.7 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (81)
Outer Limit: 93,564,356 km
- M1: 114,891 km (0.03 R)
- M2: 201,957 km (0.106 R)
- M3: 357,838 km (0.1 R)
- M4: 479,611 km (0.109 R)
- M5: 647,609 km (0.074 R)
- M6: 869,762 km (0.079 R)
- M7: 990,039 km (0.049 R)
- M8: 1,064,987 km (0.113 R)
- M9: 1,274,424 km (0.085 R)
- M10: 1,356,404 km (0.096 R)
- M11: 1,554,771 km (0.116 R)
- M12: 1,628,074 km (0.073 R)
- M13: 1,854,565 km (0.096 R)
- M14: 2,075,371 km (0.115 R)
- M15: 2,254,889 km (0.047 R)
- M16: 2,321,310 km (0.114 R)
- M17: 2,734,499 km (0.108 R)
- M18: 2,841,462 km (0.052 R)
- M19: 3,096,377 km (0.116 R)
- M20: 3,226,527 km (0.034 R)
- M21: 3,569,854 km (0.103 R)
- M22: 3,647,794 km (0.081 R)
- M23: 3,904,953 km (0.064 R)
- M24: 4,127,106 km (0.066 R)
- M25: 4,457,717 km (0.105 R)
- M26: 4,690,043 km (0.115 R)
- M27: 5,500,415 km (0.041 R)
- M28: 5,681,278 km (0.114 R)
- M29: 5,910,163 km (0.082 R)
- M30: 6,118,852 km (0.113 R)
- M31: 6,543,411 km (0.046 R)
- M32: 7,173,367 km (0.115 R)
- M33: 7,898,768 km (0.103 R)
- M34: 8,154,430 km (0.078 R)
- M35: 8,257,354 km (0.082 R)
- M36: 8,647,505 km (0.058 R)
- M37: 8,700,014 km (0.082 R)
- M38: 9,070,268 km (0.03 R)
- M39: 9,257,266 km (0.094 R)
- M40: 9,499,764 km (0.096 R)
- M41: 9,553,918 km (0.073 R)
- M42: 9,662,526 km (0.117 R)
- M43: 9,716,980 km (0.095 R)
- M44: 9,908,465 km (0.1 R)
- M45: 10,490,251 km (0.115 R)
- M46: 10,546,351 km (0.117 R)
- M47: 10,771,346 km (0.097 R)
- M48: 11,398,161 km (0.094 R)
- M49: 11,513,351 km (0.099 R)
- M50: 11,687,034 km (0.051 R)
- M51: 11,861,466 km (0.062 R)
- M52: 11,919,809 km (0.069 R)
- M53: 12,568,016 km (0.044 R)
- M54: 12,836,544 km (0.082 R)
- M55: 13,076,799 km (0.061 R)
- M56: 13,137,087 km (0.061 R)
- M57: 13,288,180 km (0.118 R)
- M58: 13,898,540 km (0.113 R)
- M59: 14,052,626 km (0.096 R)
- M60: 14,300,210 km (0.077 R)
- M61: 14,455,792 km (0.083 R)
- M62: 15,083,355 km (0.09 R)
- M63: 15,241,629 km (0.094 R)
- M64: 16,267,721 km (0.072 R)
- M65: 17,382,375 km (0.098 R)
- M66: 17,815,012 km (0.118 R)
- M67: 18,183,920 km (0.071 R)
- M68: 18,453,645 km (0.072 R)
- M69: 19,134,166 km (0.107 R)
- M70: 19,511,901 km (0.117 R)
- M71: 19,684,387 km (0.119 R)
- M72: 20,554,598 km (0.079 R)
- M73: 20,730,226 km (0.041 R)
- M74: 20,800,537 km (0.088 R)
- M75: 20,976,763 km (0.089 R)
- M76: 21,330,712 km (0.026 R)
- M77: 21,901,278 km (0.084 R)
- M78: 22,188,356 km (0.104 R)
- M79: 23,642,597 km (0.03 R)
- M80: 24,418,412 km (0.072 R)
- M81: 24,641,612 km (0.118 R)
Planet 4 - Gas Giant
Semi-Major Axis: 6.66 AU
Status: Outer (Cold)
Composition: Hydrogen/Helium Atmosphere
Physical Data
Mass: 30.9
Radius: 9.2
Gravity: 0.37 G
Time & Orbit
Eccentricity (e): 0.168
Orbit Range: 5.54 AU - 7.78 AU
Year: 6617 Days
Day: 13.1 Hours
Environment
Temp: -173 °C
Axial Tilt: 12.2 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (36)
Outer Limit: 93,564,356 km
- M1: 121,922 km (0.118 R)
- M2: 224,995 km (0.037 R)
- M3: 484,548 km (0.091 R)
- M4: 576,550 km (0.104 R)
- M5: 695,630 km (0.104 R)
- M6: 860,487 km (0.108 R)
- M7: 920,924 km (0.056 R)
- M8: 1,128,118 km (0.115 R)
- M9: 1,323,941 km (0.09 R)
- M10: 1,633,908 km (0.041 R)
- M11: 2,017,178 km (0.101 R)
- M12: 2,203,577 km (0.063 R)
- M13: 2,739,586 km (0.036 R)
- M14: 2,865,398 km (0.096 R)
- M15: 3,685,194 km (0.116 R)
- M16: 4,043,032 km (0.039 R)
- M17: 5,097,847 km (0.074 R)
- M18: 5,295,765 km (0.059 R)
- M19: 6,202,926 km (0.065 R)
- M20: 6,444,826 km (0.101 R)
- M21: 7,094,679 km (0.101 R)
- M22: 7,603,761 km (0.083 R)
- M23: 7,976,858 km (0.098 R)
- M24: 8,091,749 km (0.093 R)
- M25: 8,207,089 km (0.1 R)
- M26: 8,339,483 km (0.103 R)
- M27: 8,707,494 km (0.079 R)
- M28: 10,232,046 km (0.094 R)
- M29: 10,716,294 km (0.083 R)
- M30: 10,843,003 km (0.102 R)
- M31: 11,226,273 km (0.048 R)
- M32: 11,614,031 km (0.037 R)
- M33: 11,893,629 km (0.063 R)
- M34: 11,968,578 km (0.068 R)
- M35: 12,516,704 km (0.083 R)
- M36: 12,707,591 km (0.039 R)
Planet 5 - Gas Giant
Semi-Major Axis: 6.86 AU
Status: Outer (Cold)
Composition: Hydrogen/Helium Atmosphere
Physical Data
Mass: 37.3
Radius: 10.3
Gravity: 0.35 G
Time & Orbit
Eccentricity (e): 0.186
Orbit Range: 5.58 AU - 8.14 AU
Year: 6918 Days
Day: 8.9 Hours
Environment
Temp: -160 °C
Axial Tilt: 35.1 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (36)
Outer Limit: 93,564,356 km
- M1: 144,362 km (0.096 R)
- M2: 240,703 km (0.076 R)
- M3: 423,212 km (0.105 R)
- M4: 527,482 km (0.094 R)
- M5: 648,956 km (0.102 R)
- M6: 765,492 km (0.073 R)
- M7: 842,236 km (0.098 R)
- M8: 962,662 km (0.055 R)
- M9: 1,473,689 km (0.054 R)
- M10: 1,814,921 km (0.07 R)
- M11: 2,081,954 km (0.07 R)
- M12: 2,315,925 km (0.059 R)
- M13: 2,594,027 km (0.103 R)
- M14: 2,749,310 km (0.099 R)
- M15: 2,834,132 km (0.077 R)
- M16: 3,056,584 km (0.108 R)
- M17: 3,271,855 km (0.087 R)
- M18: 4,029,867 km (0.072 R)
- M19: 5,136,892 km (0.062 R)
- M20: 5,363,084 km (0.069 R)
- M21: 6,575,126 km (0.117 R)
- M22: 7,355,129 km (0.108 R)
- M23: 7,593,289 km (0.063 R)
- M24: 8,199,459 km (0.107 R)
- M25: 8,731,579 km (0.066 R)
- M26: 8,821,338 km (0.091 R)
- M27: 9,183,514 km (0.037 R)
- M28: 9,569,177 km (0.081 R)
- M29: 9,680,329 km (0.072 R)
- M30: 10,680,690 km (0.049 R)
- M31: 10,950,415 km (0.029 R)
- M32: 11,261,429 km (0.071 R)
- M33: 11,773,203 km (0.09 R)
- M34: 12,332,699 km (0.046 R)
- M35: 12,473,919 km (0.117 R)
- M36: 12,554,852 km (0.094 R)
Planet 6 - Ice Giant
Semi-Major Axis: 13.3 AU
Status: Outer (Cold)
Composition: Methane/Ammonia Ices
Physical Data
Mass: 548.1
Radius: 4.7
Gravity: 24.81 G
Time & Orbit
Eccentricity (e): 0.022
Orbit Range: 13.01 AU - 13.59 AU
Year: 18674 Days
Day: 24.3 Hours
Environment
Temp: -202 °C
Axial Tilt: 36.6 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (93)
Outer Limit: 93,564,356 km
- M1: 293,661 km (0.042 R)
- M2: 391,348 km (0.111 R)
- M3: 680,670 km (0.093 R)
- M4: 1,150,108 km (0.08 R)
- M5: 1,307,186 km (0.055 R)
- M6: 1,499,120 km (0.039 R)
- M7: 1,641,687 km (0.071 R)
- M8: 2,001,620 km (0.057 R)
- M9: 2,095,417 km (0.104 R)
- M10: 2,158,697 km (0.044 R)
- M11: 2,254,889 km (0.046 R)
- M12: 3,182,396 km (0.091 R)
- M13: 3,552,501 km (0.042 R)
- M14: 4,014,608 km (0.079 R)
- M15: 4,252,768 km (0.106 R)
- M16: 4,536,406 km (0.091 R)
- M17: 4,659,824 km (0.113 R)
- M18: 4,952,138 km (0.118 R)
- M19: 5,121,782 km (0.048 R)
- M20: 5,250,436 km (0.098 R)
- M21: 5,336,605 km (0.113 R)
- M22: 5,423,372 km (0.089 R)
- M23: 5,598,401 km (0.105 R)
- M24: 5,998,725 km (0.101 R)
- M25: 6,134,261 km (0.101 R)
- M26: 6,593,227 km (0.086 R)
- M27: 6,733,101 km (0.105 R)
- M28: 7,544,071 km (0.081 R)
- M29: 7,641,459 km (0.08 R)
- M30: 8,134,833 km (0.066 R)
- M31: 8,435,824 km (0.083 R)
- M32: 8,740,555 km (0.083 R)
- M33: 9,100,487 km (0.067 R)
- M34: 9,360,488 km (0.03 R)
- M35: 9,570,374 km (0.08 R)
- M36: 9,675,841 km (0.086 R)
- M37: 10,806,501 km (0.108 R)
- M38: 11,303,914 km (0.098 R)
- M39: 11,415,365 km (0.11 R)
- M40: 12,149,142 km (0.073 R)
- M41: 14,682,582 km (0.111 R)
- M42: 16,606,261 km (0.041 R)
- M43: 18,541,758 km (0.069 R)
- M44: 19,003,567 km (0.101 R)
- M45: 19,136,260 km (0.067 R)
- M46: 19,736,896 km (0.104 R)
- M47: 19,871,235 km (0.113 R)
- M48: 20,208,279 km (0.07 R)
- M49: 21,231,079 km (0.083 R)
- M50: 22,550,533 km (0.115 R)
- M51: 22,831,627 km (0.118 R)
- M52: 22,972,698 km (0.098 R)
- M53: 24,182,945 km (0.102 R)
- M54: 26,516,522 km (0.101 R)
- M55: 27,484,869 km (0.076 R)
- M56: 28,086,551 km (0.118 R)
- M57: 28,237,645 km (0.117 R)
- M58: 28,616,577 km (0.115 R)
- M59: 29,763,394 km (0.067 R)
- M60: 30,614,007 km (0.054 R)
- M61: 30,691,649 km (0.1 R)
- M62: 32,655,869 km (0.11 R)
- M63: 33,053,500 km (0.1 R)
- M64: 33,532,812 km (0.099 R)
- M65: 34,336,900 km (0.096 R)
- M66: 37,782,289 km (0.101 R)
- M67: 38,199,667 km (0.089 R)
- M68: 38,283,441 km (0.08 R)
- M69: 40,480,286 km (0.076 R)
- M70: 40,650,977 km (0.081 R)
- M71: 40,907,388 km (0.081 R)
- M72: 42,630,756 km (0.114 R)
- M73: 43,763,660 km (0.082 R)
- M74: 44,026,504 km (0.11 R)
- M75: 44,114,318 km (0.117 R)
- M76: 44,377,909 km (0.089 R)
- M77: 47,490,891 km (0.072 R)
- M78: 49,757,299 km (0.114 R)
- M79: 49,848,703 km (0.09 R)
- M80: 50,031,661 km (0.091 R)
- M81: 50,214,769 km (0.093 R)
- M82: 51,873,211 km (0.084 R)
- M83: 54,488,631 km (0.113 R)
- M84: 54,960,163 km (0.106 R)
- M85: 58,106,057 km (0.087 R)
- M86: 59,943,568 km (0.104 R)
- M87: 60,625,435 km (0.057 R)
- M88: 61,211,858 km (0.1 R)
- M89: 64,570,331 km (0.103 R)
- M90: 64,969,458 km (0.107 R)
- M91: 66,372,536 km (0.109 R)
- M92: 66,473,066 km (0.118 R)
- M93: 66,573,745 km (0.078 R)
Planet 7 - Ice Giant
Semi-Major Axis: 15.11 AU
Status: Outer (Cold)
Composition: Methane/Ammonia Ices
Physical Data
Mass: 996.3
Radius: 5.9
Gravity: 28.62 G
Time & Orbit
Eccentricity (e): 0.137
Orbit Range: 13.04 AU - 17.18 AU
Year: 22613 Days
Day: 23.2 Hours
Environment
Temp: -207 °C
Axial Tilt: 19.3 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (95)
Outer Limit: 93,564,356 km
- M1: 442,959 km (0.101 R)
- M2: 488,138 km (0.09 R)
- M3: 907,012 km (0.111 R)
- M4: 1,312,273 km (0.076 R)
- M5: 1,658,592 km (0.11 R)
- M6: 1,879,548 km (0.085 R)
- M7: 2,308,894 km (0.118 R)
- M8: 2,597,617 km (0.036 R)
- M9: 2,682,290 km (0.107 R)
- M10: 3,530,809 km (0.025 R)
- M11: 3,577,633 km (0.069 R)
- M12: 4,455,473 km (0.049 R)
- M13: 4,814,209 km (0.087 R)
- M14: 5,396,444 km (0.048 R)
- M15: 5,450,449 km (0.079 R)
- M16: 5,668,413 km (0.111 R)
- M17: 5,723,465 km (0.071 R)
- M18: 6,225,815 km (0.097 R)
- M19: 6,684,332 km (0.093 R)
- M20: 6,800,570 km (0.049 R)
- M21: 7,694,267 km (0.101 R)
- M22: 7,938,860 km (0.098 R)
- M23: 8,123,912 km (0.106 R)
- M24: 8,687,597 km (0.065 R)
- M25: 9,393,549 km (0.059 R)
- M26: 9,523,999 km (0.079 R)
- M27: 9,720,570 km (0.098 R)
- M28: 10,656,006 km (0.113 R)
- M29: 10,723,923 km (0.079 R)
- M30: 12,683,057 km (0.089 R)
- M31: 13,409,056 km (0.069 R)
- M32: 13,999,518 km (0.12 R)
- M33: 14,825,149 km (0.077 R)
- M34: 15,205,726 km (0.086 R)
- M35: 16,132,036 km (0.101 R)
- M36: 17,877,095 km (0.047 R)
- M37: 18,038,810 km (0.082 R)
- M38: 18,200,825 km (0.098 R)
- M39: 18,282,057 km (0.103 R)
- M40: 18,444,819 km (0.114 R)
- M41: 18,690,010 km (0.101 R)
- M42: 18,771,990 km (0.11 R)
- M43: 19,183,533 km (0.044 R)
- M44: 21,285,533 km (0.071 R)
- M45: 22,320,152 km (0.1 R)
- M46: 22,756,080 km (0.069 R)
- M47: 23,194,701 km (0.093 R)
- M48: 23,371,077 km (0.087 R)
- M49: 24,707,285 km (0.096 R)
- M50: 24,887,251 km (0.089 R)
- M51: 26,159,581 km (0.104 R)
- M52: 28,201,443 km (0.083 R)
- M53: 31,261,317 km (0.063 R)
- M54: 31,456,094 km (0.072 R)
- M55: 32,042,667 km (0.07 R)
- M56: 33,425,400 km (0.086 R)
- M57: 34,224,253 km (0.066 R)
- M58: 37,585,119 km (0.064 R)
- M59: 38,519,956 km (0.117 R)
- M60: 39,672,757 km (0.057 R)
- M61: 40,624,349 km (0.084 R)
- M62: 40,836,928 km (0.093 R)
- M63: 41,049,805 km (0.104 R)
- M64: 42,550,122 km (0.116 R)
- M65: 43,850,277 km (0.049 R)
- M66: 44,724,378 km (0.041 R)
- M67: 45,163,597 km (0.102 R)
- M68: 45,273,552 km (0.103 R)
- M69: 46,823,236 km (0.116 R)
- M70: 47,269,187 km (0.096 R)
- M71: 50,315,897 km (0.079 R)
- M72: 51,805,443 km (0.096 R)
- M73: 52,613,422 km (0.076 R)
- M74: 54,827,470 km (0.116 R)
- M75: 59,828,527 km (0.026 R)
- M76: 61,893,875 km (0.097 R)
- M77: 64,973,198 km (0.117 R)
- M78: 66,469,027 km (0.09 R)
- M79: 67,598,191 km (0.089 R)
- M80: 73,986,021 km (0.101 R)
- M81: 76,201,415 km (0.101 R)
- M82: 77,119,946 km (0.069 R)
- M83: 77,778,177 km (0.106 R)
- M84: 79,897,380 km (0.081 R)
- M85: 80,296,807 km (0.09 R)
- M86: 81,901,244 km (0.118 R)
- M87: 82,976,703 km (0.062 R)
- M88: 83,381,216 km (0.06 R)
- M89: 83,516,302 km (0.038 R)
- M90: 85,549,786 km (0.108 R)
- M91: 86,914,418 km (0.048 R)
- M92: 87,462,395 km (0.111 R)
- M93: 87,736,758 km (0.075 R)
- M94: 89,527,145 km (0.093 R)
- M95: 90,634,917 km (0.106 R)
Kuiper Belt
Range: 30 - 45 AU
Composition
Type: Dwarf Planets/TNOs (Ices)
Reservoir of dwarf planets and volatile ices.
Outer System
Oort Cloud
Range: 366 - 12,304 AU
Composition
Type: Cometary Reservoir
System's final boundary, containing trillions of icy planetesimals.