Star System Generated (Seed: 1766351206)
Star Details
Spectral Class: M5V
Temperature: 3,050 K
Mass: 0.3 sol
Luminosity: 0.01 lux
Habitable Zone (HZ)
Inner Boundary: 0.1 AU
Outer Boundary: 0.14 AU
Physical Limits
Snow Line: 0.48 AU
Max System Radius: 11 AU
Planetary System (6 Planets)
Planet 1 - Gas Giant
Semi-Major Axis: 0.87 AU
Status: Outer (Cold)
Composition: Hydrogen/Helium Atmosphere
Physical Data
Mass: 546.7
Radius: 13.7
Gravity: 2.91 G
Time & Orbit
Eccentricity (e): 0.219
Orbit Range: 0.68 AU - 1.06 AU
Year: 541 Days
Day: 10.1 Hours
Environment
Temp: -164 °C
Axial Tilt: 14.8 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (43)
Outer Limit: 46,467,092 km
- M1: 180,565 km (0.086 R)
- M2: 292,464 km (0.026 R)
- M3: 378,034 km (0.077 R)
- M4: 474,076 km (0.086 R)
- M5: 596,596 km (0.104 R)
- M6: 699,370 km (0.111 R)
- M7: 822,339 km (0.112 R)
- M8: 934,987 km (0.091 R)
- M9: 1,142,180 km (0.082 R)
- M10: 1,259,614 km (0.089 R)
- M11: 1,381,536 km (0.092 R)
- M12: 1,474,287 km (0.086 R)
- M13: 1,742,366 km (0.04 R)
- M14: 1,891,665 km (0.04 R)
- M15: 1,995,636 km (0.059 R)
- M16: 2,498,434 km (0.089 R)
- M17: 2,674,810 km (0.12 R)
- M18: 2,785,512 km (0.059 R)
- M19: 2,954,558 km (0.047 R)
- M20: 3,076,331 km (0.089 R)
- M21: 3,199,898 km (0.08 R)
- M22: 3,295,491 km (0.037 R)
- M23: 3,384,652 km (0.117 R)
- M24: 3,497,299 km (0.094 R)
- M25: 3,595,884 km (0.11 R)
- M26: 3,687,737 km (0.099 R)
- M27: 3,866,207 km (0.082 R)
- M28: 4,015,656 km (0.095 R)
- M29: 4,127,106 km (0.096 R)
- M30: 4,263,839 km (0.113 R)
- M31: 4,459,513 km (0.025 R)
- M32: 4,641,573 km (0.06 R)
- M33: 4,741,953 km (0.11 R)
- M34: 4,893,945 km (0.109 R)
- M35: 4,996,120 km (0.067 R)
- M36: 5,081,840 km (0.087 R)
- M37: 5,315,661 km (0.097 R)
- M38: 5,412,002 km (0.082 R)
- M39: 5,526,594 km (0.114 R)
- M40: 5,929,760 km (0.105 R)
- M41: 6,111,971 km (0.092 R)
- M42: 6,231,499 km (0.096 R)
- M43: 6,333,226 km (0.061 R)
Planet 2 - Gas Giant
Semi-Major Axis: 1.34 AU
Status: Outer (Cold)
Composition: Hydrogen/Helium Atmosphere
Physical Data
Mass: 816.3
Radius: 14.5
Gravity: 3.88 G
Time & Orbit
Eccentricity (e): 0.217
Orbit Range: 1.05 AU - 1.63 AU
Year: 1034 Days
Day: 5.4 Hours
Environment
Temp: -183 °C
Axial Tilt: 3.6 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (60)
Outer Limit: 46,467,092 km
- M1: 189,690 km (0.084 R)
- M2: 292,613 km (0.051 R)
- M3: 411,095 km (0.115 R)
- M4: 513,121 km (0.05 R)
- M5: 644,019 km (0.103 R)
- M6: 757,414 km (0.101 R)
- M7: 892,052 km (0.082 R)
- M8: 1,007,691 km (0.112 R)
- M9: 1,188,106 km (0.11 R)
- M10: 1,565,841 km (0.094 R)
- M11: 1,726,060 km (0.055 R)
- M12: 1,892,114 km (0.099 R)
- M13: 2,109,629 km (0.042 R)
- M14: 2,393,566 km (0.105 R)
- M15: 2,550,195 km (0.068 R)
- M16: 2,740,932 km (0.099 R)
- M17: 2,905,191 km (0.095 R)
- M18: 3,020,082 km (0.072 R)
- M19: 3,125,848 km (0.104 R)
- M20: 3,243,731 km (0.066 R)
- M21: 3,374,180 km (0.118 R)
- M22: 3,561,776 km (0.076 R)
- M23: 3,787,220 km (0.063 R)
- M24: 3,924,700 km (0.094 R)
- M25: 4,029,119 km (0.065 R)
- M26: 4,228,533 km (0.106 R)
- M27: 4,395,485 km (0.038 R)
- M28: 4,588,915 km (0.112 R)
- M29: 4,698,869 km (0.111 R)
- M30: 4,871,954 km (0.099 R)
- M31: 5,009,285 km (0.071 R)
- M32: 5,148,112 km (0.118 R)
- M33: 5,468,251 km (0.103 R)
- M34: 5,676,641 km (0.058 R)
- M35: 5,834,616 km (0.113 R)
- M36: 6,222,673 km (0.095 R)
- M37: 6,317,668 km (0.069 R)
- M38: 6,495,240 km (0.082 R)
- M39: 6,674,608 km (0.058 R)
- M40: 6,799,672 km (0.064 R)
- M41: 7,066,405 km (0.08 R)
- M42: 7,350,940 km (0.085 R)
- M43: 7,624,704 km (0.066 R)
- M44: 8,064,073 km (0.103 R)
- M45: 8,242,095 km (0.076 R)
- M46: 8,421,463 km (0.099 R)
- M47: 8,556,849 km (0.1 R)
- M48: 8,662,614 km (0.096 R)
- M49: 8,768,829 km (0.118 R)
- M50: 8,921,419 km (0.097 R)
- M51: 9,353,308 km (0.118 R)
- M52: 9,477,923 km (0.067 R)
- M53: 9,650,259 km (0.114 R)
- M54: 9,807,786 km (0.056 R)
- M55: 10,013,932 km (0.053 R)
- M56: 10,366,085 km (0.091 R)
- M57: 10,559,814 km (0.102 R)
- M58: 10,722,278 km (0.059 R)
- M59: 10,951,163 km (0.099 R)
- M60: 11,165,087 km (0.097 R)
Planet 3 - Gas Giant
Semi-Major Axis: 2.71 AU
Status: Outer (Cold)
Composition: Hydrogen/Helium Atmosphere
Physical Data
Mass: 450.3
Radius: 14.7
Gravity: 2.08 G
Time & Orbit
Eccentricity (e): 0.079
Orbit Range: 2.5 AU - 2.92 AU
Year: 2975 Days
Day: 8.4 Hours
Environment
Temp: -216 °C
Axial Tilt: 5.6 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (64)
Outer Limit: 46,467,092 km
- M1: 193,580 km (0.094 R)
- M2: 313,707 km (0.08 R)
- M3: 662,868 km (0.081 R)
- M4: 773,122 km (0.107 R)
- M5: 1,044,792 km (0.078 R)
- M6: 1,219,372 km (0.117 R)
- M7: 1,404,275 km (0.069 R)
- M8: 1,610,720 km (0.075 R)
- M9: 1,902,287 km (0.057 R)
- M10: 2,016,131 km (0.075 R)
- M11: 2,454,153 km (0.051 R)
- M12: 2,578,918 km (0.117 R)
- M13: 2,893,073 km (0.029 R)
- M14: 3,069,748 km (0.04 R)
- M15: 3,174,467 km (0.038 R)
- M16: 3,511,810 km (0.086 R)
- M17: 3,621,764 km (0.065 R)
- M18: 3,732,766 km (0.08 R)
- M19: 3,909,591 km (0.045 R)
- M20: 4,105,714 km (0.112 R)
- M21: 4,473,724 km (0.117 R)
- M22: 5,170,701 km (0.077 R)
- M23: 5,296,213 km (0.105 R)
- M24: 5,532,129 km (0.098 R)
- M25: 5,734,386 km (0.034 R)
- M26: 5,920,485 km (0.114 R)
- M27: 6,051,982 km (0.094 R)
- M28: 6,298,669 km (0.087 R)
- M29: 6,433,008 km (0.052 R)
- M30: 7,039,178 km (0.078 R)
- M31: 7,318,926 km (0.073 R)
- M32: 7,419,755 km (0.059 R)
- M33: 7,582,069 km (0.118 R)
- M34: 7,951,725 km (0.115 R)
- M35: 8,411,439 km (0.039 R)
- M36: 8,815,653 km (0.052 R)
- M37: 8,966,148 km (0.108 R)
- M38: 9,117,541 km (0.102 R)
- M39: 9,269,682 km (0.046 R)
- M40: 9,820,352 km (0.108 R)
- M41: 9,998,822 km (0.113 R)
- M42: 10,268,547 km (0.116 R)
- M43: 10,495,188 km (0.078 R)
- M44: 11,231,659 km (0.084 R)
- M45: 11,348,195 km (0.11 R)
- M46: 12,343,620 km (0.073 R)
- M47: 12,463,896 km (0.038 R)
- M48: 12,949,341 km (0.116 R)
- M49: 13,120,631 km (0.113 R)
- M50: 13,317,352 km (0.108 R)
- M51: 13,539,954 km (0.102 R)
- M52: 14,039,012 km (0.06 R)
- M53: 14,164,674 km (0.089 R)
- M54: 15,106,543 km (0.093 R)
- M55: 15,963,589 km (0.051 R)
- M56: 16,226,432 km (0.115 R)
- M57: 16,332,048 km (0.08 R)
- M58: 16,836,492 km (0.104 R)
- M59: 17,023,639 km (0.116 R)
- M60: 17,157,829 km (0.076 R)
- M61: 17,292,317 km (0.099 R)
- M62: 17,643,573 km (0.108 R)
- M63: 17,969,995 km (0.027 R)
- M64: 18,270,837 km (0.091 R)
Asteroid Belt
Center: 3.74 AU
Composition
Type: Outer System (Icy)
A dense region of planetesimals and debris.
Boundary
Planet 4 - Gas Giant
Semi-Major Axis: 4.76 AU
Status: Outer (Cold)
Composition: Hydrogen/Helium Atmosphere
Physical Data
Mass: 909.5
Radius: 9.8
Gravity: 9.47 G
Time & Orbit
Eccentricity (e): 0.175
Orbit Range: 3.93 AU - 5.59 AU
Year: 6925 Days
Day: 6 Hours
Environment
Temp: -220 °C
Axial Tilt: 4.3 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (86)
Outer Limit: 46,467,092 km
- M1: 136,433 km (0.062 R)
- M2: 197,469 km (0.061 R)
- M3: 426,504 km (0.088 R)
- M4: 726,148 km (0.106 R)
- M5: 966,402 km (0.057 R)
- M6: 1,122,882 km (0.077 R)
- M7: 1,344,885 km (0.101 R)
- M8: 1,540,858 km (0.096 R)
- M9: 1,662,930 km (0.08 R)
- M10: 1,938,938 km (0.055 R)
- M11: 2,415,557 km (0.093 R)
- M12: 2,802,866 km (0.117 R)
- M13: 2,978,494 km (0.112 R)
- M14: 3,261,832 km (0.109 R)
- M15: 3,420,107 km (0.068 R)
- M16: 3,608,001 km (0.115 R)
- M17: 3,716,909 km (0.097 R)
- M18: 4,249,477 km (0.051 R)
- M19: 4,568,719 km (0.116 R)
- M20: 4,835,751 km (0.083 R)
- M21: 5,354,108 km (0.111 R)
- M22: 5,572,820 km (0.059 R)
- M23: 6,116,010 km (0.119 R)
- M24: 6,246,459 km (0.119 R)
- M25: 6,609,533 km (0.119 R)
- M26: 6,743,274 km (0.115 R)
- M27: 7,150,030 km (0.069 R)
- M28: 7,356,326 km (0.102 R)
- M29: 8,094,142 km (0.033 R)
- M30: 8,781,844 km (0.092 R)
- M31: 9,040,050 km (0.057 R)
- M32: 9,338,049 km (0.113 R)
- M33: 9,488,395 km (0.045 R)
- M34: 9,677,337 km (0.103 R)
- M35: 9,982,217 km (0.09 R)
- M36: 10,213,047 km (0.11 R)
- M37: 10,640,747 km (0.119 R)
- M38: 10,955,501 km (0.099 R)
- M39: 11,313,339 km (0.115 R)
- M40: 11,393,374 km (0.099 R)
- M41: 11,554,042 km (0.071 R)
- M42: 12,327,313 km (0.098 R)
- M43: 12,492,170 km (0.101 R)
- M44: 12,907,753 km (0.083 R)
- M45: 14,138,495 km (0.08 R)
- M46: 14,224,663 km (0.103 R)
- M47: 15,008,855 km (0.106 R)
- M48: 15,140,950 km (0.077 R)
- M49: 15,317,625 km (0.05 R)
- M50: 15,628,490 km (0.12 R)
- M51: 15,717,650 km (0.1 R)
- M52: 17,306,080 km (0.025 R)
- M53: 17,490,833 km (0.071 R)
- M54: 18,850,080 km (0.117 R)
- M55: 19,903,698 km (0.057 R)
- M56: 20,048,807 km (0.092 R)
- M57: 20,437,612 km (0.096 R)
- M58: 21,321,586 km (0.091 R)
- M59: 21,668,653 km (0.11 R)
- M60: 22,167,712 km (0.052 R)
- M61: 22,721,224 km (0.1 R)
- M62: 23,381,100 km (0.098 R)
- M63: 24,823,822 km (0.057 R)
- M64: 24,928,092 km (0.081 R)
- M65: 25,084,571 km (0.115 R)
- M66: 27,471,106 km (0.039 R)
- M67: 28,011,154 km (0.079 R)
- M68: 28,391,432 km (0.107 R)
- M69: 30,931,903 km (0.104 R)
- M70: 31,156,300 km (0.082 R)
- M71: 31,324,897 km (0.066 R)
- M72: 31,550,191 km (0.047 R)
- M73: 32,229,365 km (0.082 R)
- M74: 32,343,060 km (0.051 R)
- M75: 32,456,754 km (0.082 R)
- M76: 32,913,327 km (0.101 R)
- M77: 34,644,024 km (0.096 R)
- M78: 34,993,635 km (0.071 R)
- M79: 35,990,854 km (0.077 R)
- M80: 36,167,679 km (0.12 R)
- M81: 37,354,738 km (0.116 R)
- M82: 37,593,646 km (0.112 R)
- M83: 37,892,991 km (0.093 R)
- M84: 40,684,188 km (0.108 R)
- M85: 41,114,731 km (0.096 R)
- M86: 41,176,365 km (0.117 R)
Planet 5 - Gas Giant
Semi-Major Axis: 5.27 AU
Status: Outer (Cold)
Composition: Hydrogen/Helium Atmosphere
Physical Data
Mass: 189.7
Radius: 10.8
Gravity: 1.63 G
Time & Orbit
Eccentricity (e): 0.094
Orbit Range: 4.77 AU - 5.77 AU
Year: 8068 Days
Day: 7.1 Hours
Environment
Temp: -223 °C
Axial Tilt: 4.8 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (79)
Outer Limit: 46,467,092 km
- M1: 481,855 km (0.112 R)
- M2: 580,739 km (0.061 R)
- M3: 687,701 km (0.105 R)
- M4: 898,485 km (0.034 R)
- M5: 1,171,351 km (0.116 R)
- M6: 1,353,711 km (0.112 R)
- M7: 1,668,315 km (0.096 R)
- M8: 1,826,440 km (0.076 R)
- M9: 2,123,542 km (0.076 R)
- M10: 2,243,519 km (0.05 R)
- M11: 2,708,619 km (0.053 R)
- M12: 3,664,998 km (0.082 R)
- M13: 3,977,359 km (0.102 R)
- M14: 4,147,451 km (0.089 R)
- M15: 4,276,704 km (0.105 R)
- M16: 4,605,670 km (0.12 R)
- M17: 4,920,124 km (0.104 R)
- M18: 5,034,268 km (0.099 R)
- M19: 5,149,159 km (0.089 R)
- M20: 5,334,810 km (0.118 R)
- M21: 5,857,056 km (0.103 R)
- M22: 5,929,611 km (0.058 R)
- M23: 6,296,574 km (0.117 R)
- M24: 6,746,714 km (0.05 R)
- M25: 6,899,155 km (0.036 R)
- M26: 7,181,446 km (0.037 R)
- M27: 7,890,689 km (0.106 R)
- M28: 7,970,874 km (0.086 R)
- M29: 8,348,758 km (0.086 R)
- M30: 9,262,502 km (0.053 R)
- M31: 9,631,111 km (0.093 R)
- M32: 9,802,999 km (0.105 R)
- M33: 10,207,811 km (0.03 R)
- M34: 10,677,249 km (0.061 R)
- M35: 11,213,707 km (0.106 R)
- M36: 11,304,064 km (0.111 R)
- M37: 11,912,030 km (0.062 R)
- M38: 12,065,816 km (0.088 R)
- M39: 12,344,068 km (0.099 R)
- M40: 12,593,298 km (0.096 R)
- M41: 12,970,135 km (0.073 R)
- M42: 13,510,483 km (0.116 R)
- M43: 13,670,852 km (0.084 R)
- M44: 13,863,983 km (0.117 R)
- M45: 14,058,161 km (0.118 R)
- M46: 14,481,822 km (0.1 R)
- M47: 14,711,754 km (0.081 R)
- M48: 15,141,997 km (0.118 R)
- M49: 15,341,860 km (0.082 R)
- M50: 15,609,939 km (0.118 R)
- M51: 16,048,710 km (0.08 R)
- M52: 16,116,478 km (0.089 R)
- M53: 16,286,571 km (0.094 R)
- M54: 16,731,624 km (0.068 R)
- M55: 16,972,926 km (0.117 R)
- M56: 17,215,424 km (0.065 R)
- M57: 17,493,825 km (0.046 R)
- M58: 17,773,873 km (0.104 R)
- M59: 18,231,941 km (0.115 R)
- M60: 18,444,819 km (0.048 R)
- M61: 18,801,161 km (0.064 R)
- M62: 18,872,819 km (0.065 R)
- M63: 19,195,950 km (0.068 R)
- M64: 19,340,162 km (0.061 R)
- M65: 19,957,104 km (0.094 R)
- M66: 20,103,261 km (0.103 R)
- M67: 20,654,380 km (0.11 R)
- M68: 20,765,232 km (0.076 R)
- M69: 21,024,485 km (0.113 R)
- M70: 21,621,380 km (0.095 R)
- M71: 21,733,878 km (0.11 R)
- M72: 21,809,126 km (0.032 R)
- M73: 21,884,224 km (0.068 R)
- M74: 22,223,811 km (0.113 R)
- M75: 22,869,924 km (0.049 R)
- M76: 23,792,644 km (0.085 R)
- M77: 24,453,567 km (0.097 R)
- M78: 26,552,575 km (0.117 R)
- M79: 26,834,118 km (0.043 R)
Planet 6 - Ice Giant
Semi-Major Axis: 7.52 AU
Status: Outer (Cold)
Composition: Methane/Ammonia Ices
Physical Data
Mass: 330
Radius: 5.4
Gravity: 11.32 G
Time & Orbit
Eccentricity (e): 0.1
Orbit Range: 6.77 AU - 8.27 AU
Year: 13752 Days
Day: 22.9 Hours
Environment
Temp: -226 °C
Axial Tilt: 44 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (92)
Outer Limit: 46,467,092 km
- M1: 128,205 km (0.118 R)
- M2: 284,535 km (0.089 R)
- M3: 452,384 km (0.099 R)
- M4: 783,444 km (0.11 R)
- M5: 1,237,324 km (0.109 R)
- M6: 1,468,901 km (0.054 R)
- M7: 1,556,566 km (0.114 R)
- M8: 1,760,019 km (0.105 R)
- M9: 2,117,707 km (0.038 R)
- M10: 2,550,045 km (0.078 R)
- M11: 2,709,068 km (0.1 R)
- M12: 3,036,687 km (0.11 R)
- M13: 3,177,010 km (0.085 R)
- M14: 3,290,854 km (0.033 R)
- M15: 3,405,895 km (0.074 R)
- M16: 4,031,962 km (0.068 R)
- M17: 4,279,696 km (0.084 R)
- M18: 5,353,061 km (0.039 R)
- M19: 5,625,329 km (0.094 R)
- M20: 6,649,326 km (0.048 R)
- M21: 7,126,843 km (0.046 R)
- M22: 7,539,433 km (0.117 R)
- M23: 7,806,166 km (0.092 R)
- M24: 8,387,803 km (0.086 R)
- M25: 8,863,225 km (0.099 R)
- M26: 9,551,525 km (0.081 R)
- M27: 9,840,099 km (0.072 R)
- M28: 9,922,976 km (0.117 R)
- M29: 10,257,028 km (0.091 R)
- M30: 10,425,476 km (0.09 R)
- M31: 10,722,427 km (0.077 R)
- M32: 10,765,063 km (0.076 R)
- M33: 10,979,137 km (0.088 R)
- M34: 11,065,156 km (0.084 R)
- M35: 11,498,691 km (0.037 R)
- M36: 11,717,552 km (0.053 R)
- M37: 11,761,534 km (0.106 R)
- M38: 12,070,603 km (0.095 R)
- M39: 12,248,475 km (0.067 R)
- M40: 13,379,435 km (0.12 R)
- M41: 13,655,742 km (0.099 R)
- M42: 13,887,470 km (0.056 R)
- M43: 14,027,194 km (0.062 R)
- M44: 14,073,868 km (0.082 R)
- M45: 14,214,191 km (0.088 R)
- M46: 14,354,963 km (0.054 R)
- M47: 15,065,702 km (0.091 R)
- M48: 15,257,188 km (0.103 R)
- M49: 15,545,912 km (0.047 R)
- M50: 15,885,050 km (0.085 R)
- M51: 16,079,826 km (0.102 R)
- M52: 16,226,582 km (0.087 R)
- M53: 16,916,976 km (0.106 R)
- M54: 17,165,757 km (0.038 R)
- M55: 17,616,795 km (0.089 R)
- M56: 18,173,449 km (0.116 R)
- M57: 18,326,188 km (0.057 R)
- M58: 19,355,721 km (0.116 R)
- M59: 19,511,751 km (0.094 R)
- M60: 20,087,553 km (0.083 R)
- M61: 20,245,529 km (0.091 R)
- M62: 22,719,129 km (0.09 R)
- M63: 24,776,699 km (0.043 R)
- M64: 25,513,767 km (0.102 R)
- M65: 25,970,789 km (0.072 R)
- M66: 26,951,253 km (0.083 R)
- M67: 28,296,736 km (0.054 R)
- M68: 29,245,486 km (0.101 R)
- M69: 31,357,210 km (0.104 R)
- M70: 33,892,744 km (0.115 R)
- M71: 33,955,425 km (0.074 R)
- M72: 34,206,451 km (0.116 R)
- M73: 35,661,739 km (0.083 R)
- M74: 36,172,616 km (0.12 R)
- M75: 38,501,555 km (0.105 R)
- M76: 40,213,553 km (0.097 R)
- M77: 40,346,247 km (0.075 R)
- M78: 40,811,945 km (0.073 R)
- M79: 40,878,516 km (0.049 R)
- M80: 41,078,827 km (0.057 R)
- M81: 41,547,218 km (0.11 R)
- M82: 41,614,238 km (0.116 R)
- M83: 41,882,916 km (0.038 R)
- M84: 42,489,386 km (0.101 R)
- M85: 42,759,859 km (0.031 R)
- M86: 43,234,682 km (0.069 R)
- M87: 43,984,168 km (0.119 R)
- M88: 44,394,814 km (0.102 R)
- M89: 45,703,645 km (0.113 R)
- M90: 46,258,504 km (0.093 R)
- M91: 46,397,480 km (0.09 R)
- M92: 46,467,043 km (0.114 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: 365 - 10,945 AU
Composition
Type: Cometary Reservoir
System's final boundary, containing trillions of icy planetesimals.