Star System Generated (Seed: 1768228968)
Star Details
Spectral Class: G4V
Temperature: 5,680 K
Mass: 1.02 sol
Luminosity: 1.07 lux
Habitable Zone (HZ)
Inner Boundary: 0.99 AU
Outer Boundary: 1.42 AU
Physical Limits
Snow Line: 4.97 AU
Max System Radius: 20.2 AU
Planetary System (6 Planets)
Planet 1 - Terrestrial
Semi-Major Axis: 2.84 AU
Status: Outer (Cold)
Composition: Rocky (Silicates/Metals)
Physical Data
Mass: 4.8
Radius: 1.87
Gravity: 1.37 G
Time & Orbit
Eccentricity (e): 0.068
Orbit Range: 2.65 AU - 3.03 AU
Year: 1731 Days
Day: 33.2 Hours
Environment
Temp: -99 °C
Axial Tilt: 15.4 °
Atmosphere: Thin Nâ‚‚/CHâ‚„
Biome: Ice Cap/Desert
Satellites (1)
Outer Limit: 70,032,571 km
- M1: 47,722 km (0.093 R)
Asteroid Belt
Center: 4.97 AU
Composition
Type: Main (Rocky/Icy Mix)
A dense region of planetesimals and debris.
Boundary
Planet 2 - Gas Giant
Semi-Major Axis: 7.09 AU
Status: Outer (Cold)
Composition: Hydrogen/Helium Atmosphere
Physical Data
Mass: 962.3
Radius: 13.8
Gravity: 5.05 G
Time & Orbit
Eccentricity (e): 0.167
Orbit Range: 5.91 AU - 8.27 AU
Year: 6827 Days
Day: 5.3 Hours
Environment
Temp: -151 °C
Axial Tilt: 46.4 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (82)
Outer Limit: 70,032,571 km
- M1: 172,935 km (0.106 R)
- M2: 263,442 km (0.118 R)
- M3: 365,767 km (0.057 R)
- M4: 594,053 km (0.106 R)
- M5: 750,682 km (0.043 R)
- M6: 1,290,880 km (0.057 R)
- M7: 1,462,918 km (0.052 R)
- M8: 1,938,040 km (0.063 R)
- M9: 2,047,696 km (0.042 R)
- M10: 2,701,139 km (0.089 R)
- M11: 3,496,850 km (0.1 R)
- M12: 4,803,737 km (0.106 R)
- M13: 5,322,094 km (0.116 R)
- M14: 5,415,443 km (0.066 R)
- M15: 6,084,445 km (0.084 R)
- M16: 6,412,363 km (0.119 R)
- M17: 6,712,307 km (0.115 R)
- M18: 6,948,971 km (0.114 R)
- M19: 7,360,963 km (0.089 R)
- M20: 8,209,034 km (0.046 R)
- M21: 8,791,717 km (0.092 R)
- M22: 9,312,617 km (0.08 R)
- M23: 9,690,800 km (0.025 R)
- M24: 9,805,243 km (0.109 R)
- M25: 10,035,474 km (0.076 R)
- M26: 10,855,569 km (0.092 R)
- M27: 11,093,879 km (0.1 R)
- M28: 12,311,306 km (0.11 R)
- M29: 13,062,138 km (0.1 R)
- M30: 13,742,060 km (0.076 R)
- M31: 13,913,799 km (0.099 R)
- M32: 14,216,136 km (0.107 R)
- M33: 14,651,765 km (0.078 R)
- M34: 15,091,882 km (0.109 R)
- M35: 15,269,155 km (0.09 R)
- M36: 15,402,597 km (0.095 R)
- M37: 15,895,073 km (0.088 R)
- M38: 16,211,173 km (0.093 R)
- M39: 16,575,145 km (0.102 R)
- M40: 17,403,618 km (0.091 R)
- M41: 17,543,043 km (0.101 R)
- M42: 18,104,334 km (0.042 R)
- M43: 18,245,555 km (0.119 R)
- M44: 18,434,497 km (0.117 R)
- M45: 18,719,182 km (0.107 R)
- M46: 19,053,084 km (0.112 R)
- M47: 19,388,931 km (0.09 R)
- M48: 21,147,155 km (0.104 R)
- M49: 21,744,499 km (0.089 R)
- M50: 22,347,528 km (0.104 R)
- M51: 22,549,635 km (0.079 R)
- M52: 23,775,739 km (0.091 R)
- M53: 24,292,899 km (0.114 R)
- M54: 24,552,900 km (0.064 R)
- M55: 24,761,589 km (0.107 R)
- M56: 25,602,329 km (0.11 R)
- M57: 25,760,903 km (0.097 R)
- M58: 25,973,033 km (0.089 R)
- M59: 26,398,938 km (0.039 R)
- M60: 26,773,381 km (0.106 R)
- M61: 27,473,649 km (0.078 R)
- M62: 27,636,112 km (0.109 R)
- M63: 27,799,024 km (0.094 R)
- M64: 29,002,390 km (0.057 R)
- M65: 29,112,643 km (0.052 R)
- M66: 29,223,046 km (0.041 R)
- M67: 29,444,302 km (0.11 R)
- M68: 29,666,006 km (0.06 R)
- M69: 29,888,308 km (0.057 R)
- M70: 30,278,759 km (0.094 R)
- M71: 30,895,700 km (0.092 R)
- M72: 32,255,994 km (0.1 R)
- M73: 33,867,761 km (0.08 R)
- M74: 34,158,280 km (0.103 R)
- M75: 35,328,734 km (0.104 R)
- M76: 35,682,533 km (0.1 R)
- M77: 35,859,806 km (0.109 R)
- M78: 36,393,572 km (0.097 R)
- M79: 37,109,248 km (0.094 R)
- M80: 37,709,135 km (0.069 R)
- M81: 38,070,713 km (0.082 R)
- M82: 39,344,988 km (0.082 R)
Planet 3 - Gas Giant
Semi-Major Axis: 7.47 AU
Status: Outer (Cold)
Composition: Hydrogen/Helium Atmosphere
Physical Data
Mass: 376
Radius: 13.2
Gravity: 2.16 G
Time & Orbit
Eccentricity (e): 0.224
Orbit Range: 5.8 AU - 9.14 AU
Year: 7384 Days
Day: 10.2 Hours
Environment
Temp: -166 °C
Axial Tilt: 24 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (79)
Outer Limit: 70,032,571 km
- M1: 196,123 km (0.101 R)
- M2: 329,863 km (0.079 R)
- M3: 531,521 km (0.089 R)
- M4: 680,670 km (0.107 R)
- M5: 885,919 km (0.052 R)
- M6: 1,039,705 km (0.052 R)
- M7: 1,127,818 km (0.099 R)
- M8: 1,506,750 km (0.07 R)
- M9: 1,799,363 km (0.05 R)
- M10: 1,925,325 km (0.069 R)
- M11: 2,073,127 km (0.114 R)
- M12: 2,224,670 km (0.089 R)
- M13: 2,681,691 km (0.102 R)
- M14: 2,826,652 km (0.076 R)
- M15: 3,146,492 km (0.085 R)
- M16: 3,500,590 km (0.12 R)
- M17: 3,636,724 km (0.09 R)
- M18: 3,961,501 km (0.051 R)
- M19: 4,056,047 km (0.096 R)
- M20: 4,392,941 km (0.081 R)
- M21: 4,540,146 km (0.057 R)
- M22: 5,484,258 km (0.04 R)
- M23: 5,830,278 km (0.105 R)
- M24: 5,938,138 km (0.12 R)
- M25: 6,265,907 km (0.083 R)
- M26: 6,432,110 km (0.054 R)
- M27: 7,111,434 km (0.108 R)
- M28: 7,695,015 km (0.053 R)
- M29: 7,962,795 km (0.087 R)
- M30: 8,939,370 km (0.109 R)
- M31: 9,442,019 km (0.027 R)
- M32: 10,213,196 km (0.114 R)
- M33: 10,343,646 km (0.079 R)
- M34: 10,573,428 km (0.052 R)
- M35: 10,771,645 km (0.097 R)
- M36: 11,644,997 km (0.084 R)
- M37: 11,815,689 km (0.086 R)
- M38: 12,159,315 km (0.115 R)
- M39: 12,297,693 km (0.098 R)
- M40: 12,646,106 km (0.036 R)
- M41: 12,962,356 km (0.071 R)
- M42: 13,352,508 km (0.106 R)
- M43: 14,108,126 km (0.066 R)
- M44: 14,326,539 km (0.113 R)
- M45: 14,729,855 km (0.079 R)
- M46: 15,137,061 km (0.046 R)
- M47: 15,548,006 km (0.118 R)
- M48: 16,190,230 km (0.101 R)
- M49: 16,304,373 km (0.077 R)
- M50: 16,418,965 km (0.093 R)
- M51: 16,995,515 km (0.096 R)
- M52: 17,383,721 km (0.117 R)
- M53: 17,931,998 km (0.106 R)
- M54: 19,408,229 km (0.111 R)
- M55: 19,773,248 km (0.107 R)
- M56: 20,181,501 km (0.096 R)
- M57: 21,214,324 km (0.03 R)
- M58: 21,339,388 km (0.115 R)
- M59: 21,422,864 km (0.113 R)
- M60: 21,632,151 km (0.11 R)
- M61: 21,842,187 km (0.104 R)
- M62: 22,816,817 km (0.1 R)
- M63: 23,030,592 km (0.084 R)
- M64: 23,330,985 km (0.09 R)
- M65: 23,589,639 km (0.098 R)
- M66: 24,414,522 km (0.073 R)
- M67: 24,940,359 km (0.074 R)
- M68: 25,248,979 km (0.093 R)
- M69: 25,381,523 km (0.097 R)
- M70: 25,514,366 km (0.092 R)
- M71: 26,226,751 km (0.111 R)
- M72: 28,036,287 km (0.085 R)
- M73: 28,173,617 km (0.116 R)
- M74: 28,956,164 km (0.03 R)
- M75: 29,048,615 km (0.074 R)
- M76: 29,839,090 km (0.052 R)
- M77: 30,448,403 km (0.055 R)
- M78: 30,636,597 km (0.111 R)
- M79: 30,825,389 km (0.1 R)
Planet 4 - Gas Giant
Semi-Major Axis: 8.79 AU
Status: Outer (Cold)
Composition: Hydrogen/Helium Atmosphere
Physical Data
Mass: 369.2
Radius: 9.5
Gravity: 4.09 G
Time & Orbit
Eccentricity (e): 0.169
Orbit Range: 7.3 AU - 10.28 AU
Year: 9425 Days
Day: 9.8 Hours
Environment
Temp: -168 °C
Axial Tilt: 123.6 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (78)
Outer Limit: 70,032,571 km
- M1: 140,024 km (0.09 R)
- M2: 474,973 km (0.077 R)
- M3: 885,919 km (0.102 R)
- M4: 1,371,812 km (0.079 R)
- M5: 1,444,816 km (0.109 R)
- M6: 1,672,055 km (0.073 R)
- M7: 1,951,654 km (0.096 R)
- M8: 2,097,213 km (0.095 R)
- M9: 2,268,053 km (0.114 R)
- M10: 2,465,672 km (0.081 R)
- M11: 2,669,125 km (0.099 R)
- M12: 2,807,802 km (0.114 R)
- M13: 2,972,809 km (0.077 R)
- M14: 3,766,874 km (0.119 R)
- M15: 3,949,085 km (0.071 R)
- M16: 4,214,471 km (0.06 R)
- M17: 4,651,147 km (0.108 R)
- M18: 4,903,220 km (0.098 R)
- M19: 5,479,321 km (0.089 R)
- M20: 5,955,790 km (0.085 R)
- M21: 6,137,851 km (0.097 R)
- M22: 6,507,507 km (0.085 R)
- M23: 6,601,156 km (0.08 R)
- M24: 6,852,929 km (0.098 R)
- M25: 6,916,358 km (0.092 R)
- M26: 7,172,021 km (0.106 R)
- M27: 7,301,124 km (0.115 R)
- M28: 8,293,257 km (0.084 R)
- M29: 9,752,435 km (0.091 R)
- M30: 9,931,354 km (0.068 R)
- M31: 10,438,191 km (0.081 R)
- M32: 10,547,996 km (0.12 R)
- M33: 10,916,456 km (0.087 R)
- M34: 11,289,254 km (0.104 R)
- M35: 11,742,086 km (0.11 R)
- M36: 12,626,659 km (0.083 R)
- M37: 13,018,007 km (0.1 R)
- M38: 14,013,581 km (0.081 R)
- M39: 14,418,692 km (0.071 R)
- M40: 14,540,913 km (0.07 R)
- M41: 14,827,543 km (0.083 R)
- M42: 15,116,117 km (0.113 R)
- M43: 15,281,871 km (0.106 R)
- M44: 16,246,478 km (0.116 R)
- M45: 16,586,664 km (0.083 R)
- M46: 16,672,084 km (0.114 R)
- M47: 18,234,185 km (0.117 R)
- M48: 19,978,646 km (0.101 R)
- M49: 20,251,812 km (0.118 R)
- M50: 21,078,490 km (0.066 R)
- M51: 22,197,930 km (0.039 R)
- M52: 22,528,093 km (0.106 R)
- M53: 22,954,896 km (0.109 R)
- M54: 23,624,197 km (0.081 R)
- M55: 24,106,201 km (0.114 R)
- M56: 24,835,341 km (0.11 R)
- M57: 25,719,764 km (0.051 R)
- M58: 25,868,165 km (0.05 R)
- M59: 26,016,865 km (0.095 R)
- M60: 26,564,543 km (0.086 R)
- M61: 26,915,051 km (0.112 R)
- M62: 27,115,960 km (0.105 R)
- M63: 28,434,516 km (0.073 R)
- M64: 28,690,478 km (0.045 R)
- M65: 29,411,091 km (0.1 R)
- M66: 29,670,045 km (0.078 R)
- M67: 29,773,716 km (0.084 R)
- M68: 30,451,095 km (0.088 R)
- M69: 31,291,686 km (0.07 R)
- M70: 31,874,070 km (0.115 R)
- M71: 32,033,542 km (0.112 R)
- M72: 32,299,826 km (0.088 R)
- M73: 32,513,452 km (0.086 R)
- M74: 33,750,626 km (0.049 R)
- M75: 34,784,347 km (0.106 R)
- M76: 35,003,359 km (0.115 R)
- M77: 36,382,053 km (0.118 R)
- M78: 36,882,757 km (0.073 R)
Planet 5 - Gas Giant
Semi-Major Axis: 9.57 AU
Status: Outer (Cold)
Composition: Hydrogen/Helium Atmosphere
Physical Data
Mass: 991.9
Radius: 10.3
Gravity: 9.35 G
Time & Orbit
Eccentricity (e): 0.02
Orbit Range: 9.38 AU - 9.76 AU
Year: 10707 Days
Day: 12.3 Hours
Environment
Temp: -166 °C
Axial Tilt: 5.3 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (88)
Outer Limit: 70,032,571 km
- M1: 154,385 km (0.1 R)
- M2: 288,275 km (0.088 R)
- M3: 452,234 km (0.111 R)
- M4: 723,605 km (0.041 R)
- M5: 981,212 km (0.116 R)
- M6: 1,244,953 km (0.1 R)
- M7: 1,812,378 km (0.119 R)
- M8: 2,165,878 km (0.064 R)
- M9: 2,570,839 km (0.119 R)
- M10: 2,999,587 km (0.059 R)
- M11: 3,287,114 km (0.114 R)
- M12: 3,820,281 km (0.118 R)
- M13: 4,027,324 km (0.1 R)
- M14: 4,561,089 km (0.047 R)
- M15: 6,661,444 km (0.032 R)
- M16: 6,911,122 km (0.118 R)
- M17: 9,201,017 km (0.07 R)
- M18: 9,666,266 km (0.065 R)
- M19: 10,186,867 km (0.111 R)
- M20: 10,330,481 km (0.072 R)
- M21: 11,058,574 km (0.113 R)
- M22: 11,206,077 km (0.118 R)
- M23: 11,354,329 km (0.1 R)
- M24: 12,769,225 km (0.078 R)
- M25: 13,340,241 km (0.082 R)
- M26: 14,507,254 km (0.086 R)
- M27: 15,266,762 km (0.098 R)
- M28: 17,392,996 km (0.069 R)
- M29: 18,607,282 km (0.107 R)
- M30: 19,077,169 km (0.116 R)
- M31: 19,195,202 km (0.116 R)
- M32: 19,669,876 km (0.051 R)
- M33: 20,028,462 km (0.117 R)
- M34: 20,934,277 km (0.11 R)
- M35: 21,300,343 km (0.103 R)
- M36: 21,853,407 km (0.048 R)
- M37: 22,349,174 km (0.083 R)
- M38: 23,162,388 km (0.055 R)
- M39: 24,625,006 km (0.093 R)
- M40: 24,753,511 km (0.093 R)
- M41: 25,334,998 km (0.112 R)
- M42: 25,790,374 km (0.101 R)
- M43: 26,643,082 km (0.047 R)
- M44: 27,039,815 km (0.056 R)
- M45: 29,666,006 km (0.057 R)
- M46: 30,835,861 km (0.099 R)
- M47: 31,810,790 km (0.105 R)
- M48: 32,231,609 km (0.094 R)
- M49: 32,583,763 km (0.078 R)
- M50: 32,654,373 km (0.118 R)
- M51: 33,149,841 km (0.068 R)
- M52: 35,156,547 km (0.059 R)
- M53: 35,519,022 km (0.084 R)
- M54: 36,028,702 km (0.12 R)
- M55: 36,174,710 km (0.034 R)
- M56: 36,467,323 km (0.074 R)
- M57: 36,760,834 km (0.109 R)
- M58: 36,907,889 km (0.079 R)
- M59: 37,202,447 km (0.115 R)
- M60: 37,424,002 km (0.117 R)
- M61: 37,942,508 km (0.102 R)
- M62: 39,286,645 km (0.113 R)
- M63: 39,436,991 km (0.118 R)
- M64: 39,738,131 km (0.078 R)
- M65: 39,889,075 km (0.09 R)
- M66: 40,418,801 km (0.082 R)
- M67: 41,408,541 km (0.074 R)
- M68: 42,329,316 km (0.103 R)
- M69: 42,946,856 km (0.082 R)
- M70: 43,334,314 km (0.101 R)
- M71: 43,722,970 km (0.106 R)
- M72: 43,878,701 km (0.104 R)
- M73: 44,190,912 km (0.118 R)
- M74: 46,079,136 km (0.114 R)
- M75: 46,316,997 km (0.051 R)
- M76: 47,833,022 km (0.109 R)
- M77: 49,041,473 km (0.039 R)
- M78: 49,203,338 km (0.095 R)
- M79: 49,446,435 km (0.097 R)
- M80: 51,159,629 km (0.103 R)
- M81: 51,570,425 km (0.104 R)
- M82: 52,975,299 km (0.06 R)
- M83: 53,141,352 km (0.093 R)
- M84: 53,474,058 km (0.07 R)
- M85: 53,640,710 km (0.092 R)
- M86: 54,392,589 km (0.12 R)
- M87: 54,476,364 km (0.103 R)
- M88: 54,727,987 km (0.112 R)
Planet 6 - Ice Giant
Semi-Major Axis: 15.77 AU
Status: Outer (Cold)
Composition: Methane/Ammonia Ices
Physical Data
Mass: 416.5
Radius: 5.9
Gravity: 11.96 G
Time & Orbit
Eccentricity (e): 0.103
Orbit Range: 14.15 AU - 17.39 AU
Year: 22648 Days
Day: 19 Hours
Environment
Temp: -187 °C
Axial Tilt: 19.5 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (94)
Outer Limit: 70,032,571 km
- M1: 133,142 km (0.04 R)
- M2: 612,154 km (0.082 R)
- M3: 675,584 km (0.057 R)
- M4: 855,550 km (0.106 R)
- M5: 902,973 km (0.106 R)
- M6: 1,396,945 km (0.098 R)
- M7: 1,962,275 km (0.108 R)
- M8: 2,318,917 km (0.095 R)
- M9: 2,487,813 km (0.093 R)
- M10: 3,314,790 km (0.083 R)
- M11: 3,659,762 km (0.08 R)
- M12: 3,738,002 km (0.079 R)
- M13: 3,777,346 km (0.091 R)
- M14: 3,816,840 km (0.097 R)
- M15: 3,936,070 km (0.058 R)
- M16: 4,097,037 km (0.044 R)
- M17: 4,178,418 km (0.098 R)
- M18: 5,550,081 km (0.056 R)
- M19: 5,959,082 km (0.094 R)
- M20: 6,566,898 km (0.074 R)
- M21: 7,047,705 km (0.103 R)
- M22: 7,440,549 km (0.119 R)
- M23: 7,539,882 km (0.082 R)
- M24: 8,145,155 km (0.093 R)
- M25: 9,081,937 km (0.093 R)
- M26: 9,241,408 km (0.08 R)
- M27: 10,549,941 km (0.089 R)
- M28: 11,626,298 km (0.117 R)
- M29: 12,382,814 km (0.11 R)
- M30: 13,095,199 km (0.078 R)
- M31: 13,456,328 km (0.051 R)
- M32: 16,720,554 km (0.065 R)
- M33: 16,785,629 km (0.061 R)
- M34: 17,046,827 km (0.095 R)
- M35: 17,112,351 km (0.055 R)
- M36: 17,177,875 km (0.109 R)
- M37: 18,104,634 km (0.066 R)
- M38: 18,506,902 km (0.093 R)
- M39: 19,251,750 km (0.077 R)
- M40: 19,937,507 km (0.089 R)
- M41: 20,422,353 km (0.055 R)
- M42: 21,191,885 km (0.03 R)
- M43: 21,970,990 km (0.08 R)
- M44: 25,179,566 km (0.112 R)
- M45: 25,403,663 km (0.073 R)
- M46: 26,761,862 km (0.107 R)
- M47: 27,911,522 km (0.056 R)
- M48: 31,456,094 km (0.055 R)
- M49: 32,020,078 km (0.115 R)
- M50: 33,403,709 km (0.116 R)
- M51: 33,814,355 km (0.116 R)
- M52: 35,222,968 km (0.115 R)
- M53: 35,976,493 km (0.097 R)
- M54: 36,735,253 km (0.077 R)
- M55: 36,819,926 km (0.099 R)
- M56: 38,354,500 km (0.107 R)
- M57: 38,698,276 km (0.075 R)
- M58: 38,784,445 km (0.093 R)
- M59: 38,870,613 km (0.105 R)
- M60: 39,215,885 km (0.09 R)
- M61: 40,958,102 km (0.066 R)
- M62: 42,369,857 km (0.103 R)
- M63: 42,903,323 km (0.113 R)
- M64: 43,439,033 km (0.096 R)
- M65: 44,066,895 km (0.082 R)
- M66: 44,878,464 km (0.079 R)
- M67: 46,059,539 km (0.115 R)
- M68: 46,699,818 km (0.092 R)
- M69: 46,975,078 km (0.1 R)
- M70: 47,158,784 km (0.052 R)
- M71: 47,250,787 km (0.086 R)
- M72: 47,711,698 km (0.092 R)
- M73: 48,173,955 km (0.083 R)
- M74: 49,383,155 km (0.102 R)
- M75: 51,168,156 km (0.066 R)
- M76: 51,357,248 km (0.044 R)
- M77: 51,641,335 km (0.097 R)
- M78: 52,401,591 km (0.07 R)
- M79: 52,496,885 km (0.104 R)
- M80: 53,165,438 km (0.094 R)
- M81: 53,644,749 km (0.1 R)
- M82: 54,800,991 km (0.086 R)
- M83: 55,285,090 km (0.072 R)
- M84: 55,576,357 km (0.107 R)
- M85: 56,257,775 km (0.066 R)
- M86: 57,924,146 km (0.083 R)
- M87: 59,110,008 km (0.098 R)
- M88: 59,507,191 km (0.118 R)
- M89: 63,222,155 km (0.034 R)
- M90: 65,671,820 km (0.082 R)
- M91: 67,736,719 km (0.09 R)
- M92: 68,881,442 km (0.032 R)
- M93: 69,090,281 km (0.119 R)
- M94: 69,613,275 km (0.115 R)
Kuiper Belt
Range: 30.3 - 56.3 AU
Composition
Type: Dwarf Planets/TNOs (Ices)
Reservoir of dwarf planets and volatile ices.
Outer System
Oort Cloud
Range: 329 - 18,430 AU
Composition
Type: Cometary Reservoir
System's final boundary, containing trillions of icy planetesimals.