Star System Generated (Seed: 1767814423)
Star Details
Spectral Class: M8V
Temperature: 2,617 K
Mass: 0.28 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: 10.6 AU
Planetary System (7 Planets)
Planet 1 - Gas Giant
Semi-Major Axis: 0.57 AU
Status: Outer (Cold)
Composition: Hydrogen/Helium Atmosphere
Physical Data
Mass: 223.4
Radius: 9.9
Gravity: 2.28 G
Time & Orbit
Eccentricity (e): 0.075
Orbit Range: 0.53 AU - 0.61 AU
Year: 297 Days
Day: 9.6 Hours
Environment
Temp: -150 °C
Axial Tilt: 6.2 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (29)
Outer Limit: 50,168,105 km
- M1: 123,867 km (0.105 R)
- M2: 190,588 km (0.038 R)
- M3: 265,686 km (0.077 R)
- M4: 447,746 km (0.109 R)
- M5: 571,314 km (0.097 R)
- M6: 648,058 km (0.088 R)
- M7: 763,697 km (0.11 R)
- M8: 895,493 km (0.105 R)
- M9: 1,004,699 km (0.068 R)
- M10: 1,078,152 km (0.111 R)
- M11: 1,217,876 km (0.115 R)
- M12: 1,289,982 km (0.09 R)
- M13: 1,425,069 km (0.096 R)
- M14: 1,490,892 km (0.073 R)
- M15: 1,633,160 km (0.106 R)
- M16: 1,720,675 km (0.11 R)
- M17: 1,821,055 km (0.057 R)
- M18: 1,915,900 km (0.094 R)
- M19: 2,090,630 km (0.12 R)
- M20: 2,170,067 km (0.114 R)
- M21: 2,377,409 km (0.1 R)
- M22: 2,548,699 km (0.113 R)
- M23: 2,612,428 km (0.091 R)
- M24: 2,728,665 km (0.118 R)
- M25: 2,820,069 km (0.115 R)
- M26: 2,903,844 km (0.063 R)
- M27: 3,015,295 km (0.113 R)
- M28: 3,082,763 km (0.118 R)
- M29: 3,155,468 km (0.116 R)
Planet 2 - Gas Giant
Semi-Major Axis: 0.9 AU
Status: Outer (Cold)
Composition: Hydrogen/Helium Atmosphere
Physical Data
Mass: 632.9
Radius: 13.3
Gravity: 3.58 G
Time & Orbit
Eccentricity (e): 0.07
Orbit Range: 0.84 AU - 0.96 AU
Year: 589 Days
Day: 9.6 Hours
Environment
Temp: -179 °C
Axial Tilt: 49.9 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (46)
Outer Limit: 50,168,105 km
- M1: 165,605 km (0.057 R)
- M2: 249,679 km (0.085 R)
- M3: 342,579 km (0.028 R)
- M4: 481,556 km (0.114 R)
- M5: 590,912 km (0.036 R)
- M6: 746,344 km (0.109 R)
- M7: 873,053 km (0.084 R)
- M8: 1,013,077 km (0.03 R)
- M9: 1,172,099 km (0.09 R)
- M10: 1,288,636 km (0.117 R)
- M11: 1,564,644 km (0.063 R)
- M12: 1,719,478 km (0.101 R)
- M13: 1,808,489 km (0.088 R)
- M14: 1,892,563 km (0.104 R)
- M15: 2,004,761 km (0.117 R)
- M16: 2,208,214 km (0.053 R)
- M17: 2,312,633 km (0.105 R)
- M18: 2,418,698 km (0.084 R)
- M19: 2,548,250 km (0.096 R)
- M20: 2,717,296 km (0.093 R)
- M21: 2,890,081 km (0.095 R)
- M22: 3,035,790 km (0.055 R)
- M23: 3,175,963 km (0.084 R)
- M24: 3,270,808 km (0.093 R)
- M25: 3,430,728 km (0.101 R)
- M26: 3,528,116 km (0.112 R)
- M27: 3,692,375 km (0.094 R)
- M28: 3,876,081 km (0.109 R)
- M29: 3,986,035 km (0.051 R)
- M30: 4,270,122 km (0.054 R)
- M31: 4,463,103 km (0.089 R)
- M32: 4,623,322 km (0.099 R)
- M33: 4,713,081 km (0.07 R)
- M34: 4,858,041 km (0.092 R)
- M35: 5,078,249 km (0.102 R)
- M36: 5,217,675 km (0.065 R)
- M37: 5,330,023 km (0.089 R)
- M38: 5,633,856 km (0.101 R)
- M39: 5,816,964 km (0.103 R)
- M40: 5,992,143 km (0.113 R)
- M41: 6,119,899 km (0.085 R)
- M42: 6,238,530 km (0.085 R)
- M43: 6,448,117 km (0.08 R)
- M44: 6,589,188 km (0.052 R)
- M45: 6,680,443 km (0.053 R)
- M46: 6,792,491 km (0.108 R)
Planet 3 - Gas Giant
Semi-Major Axis: 1.22 AU
Status: Outer (Cold)
Composition: Hydrogen/Helium Atmosphere
Physical Data
Mass: 280.1
Radius: 14.8
Gravity: 1.28 G
Time & Orbit
Eccentricity (e): 0.162
Orbit Range: 1.02 AU - 1.42 AU
Year: 930 Days
Day: 10.1 Hours
Environment
Temp: -184 °C
Axial Tilt: 34.6 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (41)
Outer Limit: 50,168,105 km
- M1: 188,194 km (0.118 R)
- M2: 283,488 km (0.11 R)
- M3: 395,836 km (0.057 R)
- M4: 502,499 km (0.117 R)
- M5: 656,884 km (0.096 R)
- M6: 879,037 km (0.109 R)
- M7: 984,803 km (0.09 R)
- M8: 1,084,734 km (0.04 R)
- M9: 1,284,447 km (0.12 R)
- M10: 1,503,159 km (0.112 R)
- M11: 1,645,577 km (0.065 R)
- M12: 1,773,483 km (0.096 R)
- M13: 1,951,504 km (0.114 R)
- M14: 2,304,705 km (0.064 R)
- M15: 2,456,247 km (0.09 R)
- M16: 2,566,501 km (0.116 R)
- M17: 2,693,659 km (0.106 R)
- M18: 2,861,508 km (0.072 R)
- M19: 2,954,558 km (0.053 R)
- M20: 3,056,434 km (0.12 R)
- M21: 3,272,154 km (0.06 R)
- M22: 3,394,226 km (0.075 R)
- M23: 3,501,189 km (0.069 R)
- M24: 3,676,667 km (0.103 R)
- M25: 3,854,988 km (0.029 R)
- M26: 4,018,797 km (0.026 R)
- M27: 4,176,324 km (0.099 R)
- M28: 4,326,969 km (0.091 R)
- M29: 4,488,535 km (0.054 R)
- M30: 4,789,974 km (0.104 R)
- M31: 4,910,550 km (0.075 R)
- M32: 5,135,844 km (0.1 R)
- M33: 5,499,667 km (0.113 R)
- M34: 5,852,269 km (0.08 R)
- M35: 5,971,498 km (0.055 R)
- M36: 6,333,974 km (0.049 R)
- M37: 6,487,162 km (0.082 R)
- M38: 6,600,258 km (0.083 R)
- M39: 6,828,544 km (0.092 R)
- M40: 7,101,710 km (0.113 R)
- M41: 7,239,639 km (0.113 R)
Planet 4 - Gas Giant
Semi-Major Axis: 1.41 AU
Status: Outer (Cold)
Composition: Hydrogen/Helium Atmosphere
Physical Data
Mass: 944.2
Radius: 13.5
Gravity: 5.18 G
Time & Orbit
Eccentricity (e): 0.234
Orbit Range: 1.08 AU - 1.74 AU
Year: 1156 Days
Day: 7 Hours
Environment
Temp: -190 °C
Axial Tilt: 35.1 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (59)
Outer Limit: 50,168,105 km
- M1: 176,825 km (0.026 R)
- M2: 291,117 km (0.088 R)
- M3: 409,150 km (0.064 R)
- M4: 527,781 km (0.108 R)
- M5: 674,088 km (0.116 R)
- M6: 1,043,296 km (0.112 R)
- M7: 1,276,519 km (0.07 R)
- M8: 1,361,191 km (0.081 R)
- M9: 1,447,808 km (0.12 R)
- M10: 1,617,901 km (0.085 R)
- M11: 1,719,628 km (0.111 R)
- M12: 1,900,641 km (0.117 R)
- M13: 2,333,876 km (0.116 R)
- M14: 2,535,385 km (0.117 R)
- M15: 2,622,002 km (0.066 R)
- M16: 2,887,987 km (0.083 R)
- M17: 2,978,643 km (0.085 R)
- M18: 3,081,866 km (0.119 R)
- M19: 3,280,083 km (0.066 R)
- M20: 3,374,778 km (0.118 R)
- M21: 3,518,692 km (0.098 R)
- M22: 3,603,663 km (0.104 R)
- M23: 3,689,383 km (0.066 R)
- M24: 3,862,767 km (0.112 R)
- M25: 3,962,997 km (0.087 R)
- M26: 4,102,422 km (0.098 R)
- M27: 4,191,882 km (0.057 R)
- M28: 4,295,104 km (0.118 R)
- M29: 4,425,255 km (0.109 R)
- M30: 4,517,257 km (0.111 R)
- M31: 4,689,744 km (0.086 R)
- M32: 4,783,542 km (0.109 R)
- M33: 4,891,402 km (0.037 R)
- M34: 5,013,922 km (0.084 R)
- M35: 5,151,253 km (0.077 R)
- M36: 5,248,043 km (0.116 R)
- M37: 5,528,090 km (0.107 R)
- M38: 5,741,566 km (0.095 R)
- M39: 5,827,585 km (0.104 R)
- M40: 6,059,462 km (0.095 R)
- M41: 6,368,232 km (0.065 R)
- M42: 6,879,408 km (0.092 R)
- M43: 6,970,962 km (0.108 R)
- M44: 7,403,898 km (0.051 R)
- M45: 7,623,507 km (0.063 R)
- M46: 8,117,928 km (0.062 R)
- M47: 8,263,338 km (0.08 R)
- M48: 8,377,032 km (0.094 R)
- M49: 8,606,216 km (0.027 R)
- M50: 8,771,073 km (0.073 R)
- M51: 9,154,343 km (0.11 R)
- M52: 9,560,351 km (0.069 R)
- M53: 10,249,848 km (0.077 R)
- M54: 10,372,219 km (0.112 R)
- M55: 10,459,883 km (0.068 R)
- M56: 10,884,292 km (0.11 R)
- M57: 11,009,207 km (0.119 R)
- M58: 11,386,642 km (0.102 R)
- M59: 12,507,130 km (0.105 R)
Planet 5 - Gas Giant
Semi-Major Axis: 2.41 AU
Status: Outer (Cold)
Composition: Hydrogen/Helium Atmosphere
Physical Data
Mass: 569
Radius: 11.7
Gravity: 4.16 G
Time & Orbit
Eccentricity (e): 0.157
Orbit Range: 2.03 AU - 2.79 AU
Year: 2582 Days
Day: 11.7 Hours
Environment
Temp: -199 °C
Axial Tilt: 11.7 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (68)
Outer Limit: 50,168,105 km
- M1: 169,345 km (0.113 R)
- M2: 296,054 km (0.106 R)
- M3: 459,864 km (0.078 R)
- M4: 788,830 km (0.09 R)
- M5: 861,684 km (0.086 R)
- M6: 1,044,642 km (0.073 R)
- M7: 1,125,724 km (0.104 R)
- M8: 1,219,671 km (0.027 R)
- M9: 1,360,443 km (0.102 R)
- M10: 1,483,861 km (0.08 R)
- M11: 1,599,650 km (0.086 R)
- M12: 1,694,495 km (0.047 R)
- M13: 1,852,620 km (0.06 R)
- M14: 1,977,833 km (0.103 R)
- M15: 2,080,158 km (0.077 R)
- M16: 2,184,279 km (0.112 R)
- M17: 2,290,194 km (0.056 R)
- M18: 2,759,632 km (0.099 R)
- M19: 3,005,720 km (0.111 R)
- M20: 3,566,264 km (0.047 R)
- M21: 3,770,914 km (0.116 R)
- M22: 3,898,969 km (0.092 R)
- M23: 4,110,052 km (0.098 R)
- M24: 4,241,698 km (0.1 R)
- M25: 5,185,661 km (0.099 R)
- M26: 5,599,299 km (0.084 R)
- M27: 5,727,354 km (0.086 R)
- M28: 5,911,958 km (0.089 R)
- M29: 6,042,258 km (0.03 R)
- M30: 6,324,998 km (0.095 R)
- M31: 6,554,332 km (0.06 R)
- M32: 6,650,673 km (0.03 R)
- M33: 7,100,214 km (0.107 R)
- M34: 7,338,673 km (0.115 R)
- M35: 7,418,708 km (0.085 R)
- M36: 7,803,025 km (0.095 R)
- M37: 7,925,845 km (0.1 R)
- M38: 8,173,130 km (0.118 R)
- M39: 8,297,895 km (0.111 R)
- M40: 8,696,872 km (0.112 R)
- M41: 9,102,133 km (0.061 R)
- M42: 9,491,835 km (0.109 R)
- M43: 9,579,200 km (0.108 R)
- M44: 9,864,932 km (0.057 R)
- M45: 10,175,797 km (0.095 R)
- M46: 10,830,138 km (0.078 R)
- M47: 11,358,817 km (0.12 R)
- M48: 11,591,292 km (0.099 R)
- M49: 11,778,289 km (0.056 R)
- M50: 12,013,607 km (0.104 R)
- M51: 12,345,714 km (0.099 R)
- M52: 12,584,771 km (0.102 R)
- M53: 12,825,474 km (0.098 R)
- M54: 12,922,114 km (0.069 R)
- M55: 13,164,762 km (0.043 R)
- M56: 13,753,579 km (0.078 R)
- M57: 13,951,797 km (0.115 R)
- M58: 14,175,894 km (0.102 R)
- M59: 14,753,940 km (0.052 R)
- M60: 15,288,454 km (0.071 R)
- M61: 15,622,655 km (0.114 R)
- M62: 15,777,639 km (0.111 R)
- M63: 16,193,521 km (0.029 R)
- M64: 16,455,317 km (0.114 R)
- M65: 16,718,609 km (0.112 R)
- M66: 17,222,455 km (0.066 R)
- M67: 17,543,342 km (0.104 R)
- M68: 18,028,339 km (0.056 R)
Planet 6 - Gas Giant
Semi-Major Axis: 3.9 AU
Status: Outer (Cold)
Composition: Hydrogen/Helium Atmosphere
Physical Data
Mass: 338.3
Radius: 10.5
Gravity: 3.07 G
Time & Orbit
Eccentricity (e): 0.182
Orbit Range: 3.19 AU - 4.61 AU
Year: 5316 Days
Day: 8.5 Hours
Environment
Temp: -214 °C
Axial Tilt: 22.9 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (78)
Outer Limit: 50,168,105 km
- M1: 151,692 km (0.082 R)
- M2: 398,828 km (0.03 R)
- M3: 648,806 km (0.075 R)
- M4: 901,028 km (0.117 R)
- M5: 1,133,204 km (0.12 R)
- M6: 1,223,711 km (0.082 R)
- M7: 1,384,827 km (0.096 R)
- M8: 1,818,512 km (0.046 R)
- M9: 1,925,773 km (0.057 R)
- M10: 2,211,505 km (0.107 R)
- M11: 2,409,573 km (0.086 R)
- M12: 2,476,892 km (0.085 R)
- M13: 2,562,013 km (0.104 R)
- M14: 3,130,036 km (0.1 R)
- M15: 3,222,338 km (0.097 R)
- M16: 3,390,785 km (0.107 R)
- M17: 3,504,629 km (0.064 R)
- M18: 3,678,013 km (0.089 R)
- M19: 3,873,986 km (0.101 R)
- M20: 4,503,345 km (0.084 R)
- M21: 4,670,894 km (0.069 R)
- M22: 4,776,810 km (0.118 R)
- M23: 5,186,259 km (0.112 R)
- M24: 6,108,380 km (0.097 R)
- M25: 6,200,981 km (0.1 R)
- M26: 6,576,472 km (0.106 R)
- M27: 6,719,188 km (0.084 R)
- M28: 6,790,846 km (0.114 R)
- M29: 6,886,888 km (0.032 R)
- M30: 6,983,378 km (0.108 R)
- M31: 7,497,546 km (0.06 R)
- M32: 7,796,891 km (0.065 R)
- M33: 8,458,862 km (0.063 R)
- M34: 8,718,265 km (0.103 R)
- M35: 8,901,522 km (0.118 R)
- M36: 9,298,405 km (0.066 R)
- M37: 9,405,218 km (0.036 R)
- M38: 9,485,552 km (0.038 R)
- M39: 9,674,046 km (0.091 R)
- M40: 11,683,295 km (0.105 R)
- M41: 12,001,340 km (0.065 R)
- M42: 12,734,968 km (0.116 R)
- M43: 13,302,093 km (0.111 R)
- M44: 13,482,957 km (0.058 R)
- M45: 14,122,338 km (0.112 R)
- M46: 14,492,144 km (0.053 R)
- M47: 14,678,244 km (0.042 R)
- M48: 14,802,859 km (0.055 R)
- M49: 15,147,084 km (0.074 R)
- M50: 15,399,006 km (0.095 R)
- M51: 15,779,733 km (0.12 R)
- M52: 15,875,326 km (0.093 R)
- M53: 16,550,312 km (0.105 R)
- M54: 16,907,551 km (0.068 R)
- M55: 17,038,150 km (0.035 R)
- M56: 17,333,157 km (0.062 R)
- M57: 17,563,837 km (0.095 R)
- M58: 17,629,810 km (0.109 R)
- M59: 17,828,625 km (0.11 R)
- M60: 18,228,201 km (0.098 R)
- M61: 18,597,259 km (0.112 R)
- M62: 19,479,288 km (0.075 R)
- M63: 19,719,094 km (0.067 R)
- M64: 20,201,547 km (0.09 R)
- M65: 20,305,517 km (0.057 R)
- M66: 20,548,614 km (0.1 R)
- M67: 20,687,890 km (0.107 R)
- M68: 20,792,758 km (0.091 R)
- M69: 20,967,638 km (0.092 R)
- M70: 21,037,799 km (0.107 R)
- M71: 21,178,271 km (0.059 R)
- M72: 21,601,484 km (0.119 R)
- M73: 21,672,393 km (0.105 R)
- M74: 22,063,292 km (0.119 R)
- M75: 22,600,050 km (0.114 R)
- M76: 23,032,687 km (0.066 R)
- M77: 23,613,725 km (0.109 R)
- M78: 23,686,579 km (0.032 R)
Planet 7 - Ice Giant
Semi-Major Axis: 8.23 AU
Status: Outer (Cold)
Composition: Methane/Ammonia Ices
Physical Data
Mass: 295.7
Radius: 7.9
Gravity: 4.74 G
Time & Orbit
Eccentricity (e): 0.147
Orbit Range: 7.02 AU - 9.44 AU
Year: 16297 Days
Day: 22.3 Hours
Environment
Temp: -226 °C
Axial Tilt: 16.8 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (94)
Outer Limit: 50,168,105 km
- M1: 296,204 km (0.034 R)
- M2: 384,915 km (0.06 R)
- M3: 592,258 km (0.097 R)
- M4: 947,254 km (0.066 R)
- M5: 1,273,975 km (0.087 R)
- M6: 1,753,437 km (0.119 R)
- M7: 2,025,406 km (0.032 R)
- M8: 2,231,851 km (0.102 R)
- M9: 2,364,394 km (0.04 R)
- M10: 2,554,234 km (0.102 R)
- M11: 2,777,434 km (0.059 R)
- M12: 3,094,731 km (0.034 R)
- M13: 3,302,672 km (0.099 R)
- M14: 3,953,872 km (0.111 R)
- M15: 4,179,615 km (0.106 R)
- M16: 4,343,574 km (0.069 R)
- M17: 4,610,307 km (0.073 R)
- M18: 4,745,544 km (0.073 R)
- M19: 4,848,018 km (0.117 R)
- M20: 5,264,947 km (0.05 R)
- M21: 5,765,801 km (0.059 R)
- M22: 6,394,561 km (0.07 R)
- M23: 6,583,653 km (0.039 R)
- M24: 6,697,945 km (0.094 R)
- M25: 6,928,625 km (0.077 R)
- M26: 7,477,051 km (0.087 R)
- M27: 7,716,258 km (0.054 R)
- M28: 8,120,771 km (0.067 R)
- M29: 8,202,451 km (0.102 R)
- M30: 8,490,726 km (0.076 R)
- M31: 8,573,604 km (0.113 R)
- M32: 8,908,104 km (0.067 R)
- M33: 10,554,878 km (0.119 R)
- M34: 12,717,614 km (0.063 R)
- M35: 13,003,346 km (0.101 R)
- M36: 13,194,981 km (0.051 R)
- M37: 13,484,154 km (0.09 R)
- M38: 13,824,339 km (0.055 R)
- M39: 14,118,000 km (0.107 R)
- M40: 15,516,142 km (0.04 R)
- M41: 16,077,283 km (0.088 R)
- M42: 16,128,745 km (0.12 R)
- M43: 16,283,130 km (0.078 R)
- M44: 16,437,964 km (0.085 R)
- M45: 16,905,457 km (0.086 R)
- M46: 17,482,905 km (0.079 R)
- M47: 17,535,713 km (0.086 R)
- M48: 18,603,094 km (0.11 R)
- M49: 18,927,422 km (0.111 R)
- M50: 19,417,504 km (0.082 R)
- M51: 21,475,522 km (0.119 R)
- M52: 21,929,402 km (0.094 R)
- M53: 22,100,542 km (0.095 R)
- M54: 22,329,277 km (0.095 R)
- M55: 22,904,780 km (0.06 R)
- M56: 24,364,556 km (0.117 R)
- M57: 24,482,589 km (0.105 R)
- M58: 25,195,124 km (0.045 R)
- M59: 25,673,987 km (0.057 R)
- M60: 26,276,716 km (0.1 R)
- M61: 26,397,741 km (0.104 R)
- M62: 26,884,084 km (0.117 R)
- M63: 27,067,192 km (0.09 R)
- M64: 27,311,934 km (0.109 R)
- M65: 27,557,424 km (0.095 R)
- M66: 27,742,177 km (0.117 R)
- M67: 28,174,515 km (0.053 R)
- M68: 28,733,712 km (0.093 R)
- M69: 28,983,540 km (0.101 R)
- M70: 29,547,973 km (0.049 R)
- M71: 30,369,864 km (0.056 R)
- M72: 31,135,057 km (0.118 R)
- M73: 31,520,122 km (0.065 R)
- M74: 32,749,816 km (0.071 R)
- M75: 33,403,260 km (0.099 R)
- M76: 33,600,131 km (0.106 R)
- M77: 33,994,919 km (0.086 R)
- M78: 34,060,892 km (0.03 R)
- M79: 35,122,289 km (0.077 R)
- M80: 36,802,123 km (0.085 R)
- M81: 37,345,164 km (0.106 R)
- M82: 37,685,948 km (0.052 R)
- M83: 40,799,079 km (0.067 R)
- M84: 41,009,563 km (0.072 R)
- M85: 41,150,036 km (0.08 R)
- M86: 42,635,094 km (0.091 R)
- M87: 43,634,857 km (0.103 R)
- M88: 44,931,421 km (0.042 R)
- M89: 45,221,342 km (0.061 R)
- M90: 45,293,897 km (0.079 R)
- M91: 46,240,702 km (0.038 R)
- M92: 47,047,034 km (0.076 R)
- M93: 47,858,004 km (0.098 R)
- M94: 48,376,511 km (0.077 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: 482 - 15,792 AU
Composition
Type: Cometary Reservoir
System's final boundary, containing trillions of icy planetesimals.