Star System Generated (Seed: 1768845073)
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 (8 Planets)
Planet 1 - Gas Giant
Semi-Major Axis: 0.52 AU
Status: Outer (Cold)
Composition: Hydrogen/Helium Atmosphere
Physical Data
Mass: 599.4
Radius: 14.2
Gravity: 2.97 G
Time & Orbit
Eccentricity (e): 0.176
Orbit Range: 0.43 AU - 0.61 AU
Year: 250 Days
Day: 13.3 Hours
Environment
Temp: -149 °C
Axial Tilt: 39.8 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (28)
Outer Limit: 74,283,654 km
- M1: 177,273 km (0.111 R)
- M2: 305,778 km (0.039 R)
- M3: 418,425 km (0.102 R)
- M4: 562,937 km (0.108 R)
- M5: 684,410 km (0.098 R)
- M6: 915,539 km (0.034 R)
- M7: 1,032,824 km (0.103 R)
- M8: 1,152,203 km (0.096 R)
- M9: 1,299,258 km (0.117 R)
- M10: 1,421,629 km (0.112 R)
- M11: 1,528,142 km (0.107 R)
- M12: 1,720,376 km (0.034 R)
- M13: 1,877,603 km (0.097 R)
- M14: 1,995,486 km (0.114 R)
- M15: 2,084,497 km (0.056 R)
- M16: 2,197,742 km (0.086 R)
- M17: 2,289,895 km (0.116 R)
- M18: 2,402,243 km (0.068 R)
- M19: 2,584,004 km (0.049 R)
- M20: 2,725,972 km (0.108 R)
- M21: 2,840,415 km (0.089 R)
- M22: 2,946,330 km (0.076 R)
- M23: 3,105,353 km (0.073 R)
- M24: 3,293,547 km (0.07 R)
- M25: 3,458,703 km (0.044 R)
- M26: 3,566,862 km (0.1 R)
- M27: 3,681,604 km (0.065 R)
- M28: 3,797,542 km (0.115 R)
Planet 2 - Gas Giant
Semi-Major Axis: 0.69 AU
Status: Outer (Cold)
Composition: Hydrogen/Helium Atmosphere
Physical Data
Mass: 68.2
Radius: 10.9
Gravity: 0.57 G
Time & Orbit
Eccentricity (e): 0.146
Orbit Range: 0.59 AU - 0.79 AU
Year: 382 Days
Day: 9.3 Hours
Environment
Temp: -156 °C
Axial Tilt: 1.3 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (26)
Outer Limit: 74,283,654 km
- M1: 135,685 km (0.058 R)
- M2: 224,995 km (0.036 R)
- M3: 298,298 km (0.089 R)
- M4: 398,678 km (0.063 R)
- M5: 488,886 km (0.096 R)
- M6: 593,904 km (0.109 R)
- M7: 709,842 km (0.098 R)
- M8: 884,572 km (0.06 R)
- M9: 953,686 km (0.038 R)
- M10: 1,029,981 km (0.106 R)
- M11: 1,105,827 km (0.072 R)
- M12: 1,186,461 km (0.112 R)
- M13: 1,266,346 km (0.108 R)
- M14: 1,356,853 km (0.037 R)
- M15: 1,461,272 km (0.084 R)
- M16: 1,535,473 km (0.05 R)
- M17: 1,608,028 km (0.091 R)
- M18: 1,687,913 km (0.096 R)
- M19: 1,829,432 km (0.101 R)
- M20: 1,922,931 km (0.066 R)
- M21: 2,001,470 km (0.089 R)
- M22: 2,084,497 km (0.115 R)
- M23: 2,209,561 km (0.03 R)
- M24: 2,316,224 km (0.11 R)
- M25: 2,396,707 km (0.08 R)
- M26: 2,467,318 km (0.092 R)
Planet 3 - Gas Giant
Semi-Major Axis: 0.71 AU
Status: Outer (Cold)
Composition: Hydrogen/Helium Atmosphere
Physical Data
Mass: 183.8
Radius: 13.4
Gravity: 1.02 G
Time & Orbit
Eccentricity (e): 0.006
Orbit Range: 0.71 AU - 0.71 AU
Year: 399 Days
Day: 8.8 Hours
Environment
Temp: -169 °C
Axial Tilt: 12.1 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (30)
Outer Limit: 74,283,654 km
- M1: 167,849 km (0.071 R)
- M2: 259,552 km (0.095 R)
- M3: 347,067 km (0.085 R)
- M4: 436,227 km (0.115 R)
- M5: 551,418 km (0.106 R)
- M6: 704,307 km (0.078 R)
- M7: 855,251 km (0.026 R)
- M8: 982,708 km (0.072 R)
- M9: 1,090,419 km (0.105 R)
- M10: 1,223,411 km (0.116 R)
- M11: 1,340,397 km (0.085 R)
- M12: 1,435,392 km (0.107 R)
- M13: 1,548,039 km (0.119 R)
- M14: 1,699,282 km (0.041 R)
- M15: 1,790,836 km (0.076 R)
- M16: 1,933,552 km (0.054 R)
- M17: 2,063,254 km (0.115 R)
- M18: 2,161,540 km (0.081 R)
- M19: 2,265,660 km (0.116 R)
- M20: 2,394,015 km (0.057 R)
- M21: 2,506,512 km (0.053 R)
- M22: 2,616,467 km (0.117 R)
- M23: 2,704,580 km (0.118 R)
- M24: 2,845,800 km (0.097 R)
- M25: 2,955,755 km (0.093 R)
- M26: 3,072,142 km (0.079 R)
- M27: 3,175,215 km (0.076 R)
- M28: 3,264,525 km (0.076 R)
- M29: 3,369,842 km (0.077 R)
- M30: 3,542,777 km (0.096 R)
Planet 4 - Gas Giant
Semi-Major Axis: 0.78 AU
Status: Outer (Cold)
Composition: Hydrogen/Helium Atmosphere
Physical Data
Mass: 500.2
Radius: 12.4
Gravity: 3.25 G
Time & Orbit
Eccentricity (e): 0.097
Orbit Range: 0.7 AU - 0.86 AU
Year: 459 Days
Day: 11.5 Hours
Environment
Temp: -163 °C
Axial Tilt: 8.3 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (41)
Outer Limit: 74,283,654 km
- M1: 166,203 km (0.119 R)
- M2: 309,368 km (0.095 R)
- M3: 397,781 km (0.104 R)
- M4: 498,610 km (0.104 R)
- M5: 582,534 km (0.102 R)
- M6: 675,883 km (0.096 R)
- M7: 767,287 km (0.114 R)
- M8: 863,629 km (0.033 R)
- M9: 960,269 km (0.083 R)
- M10: 1,188,405 km (0.099 R)
- M11: 1,278,164 km (0.048 R)
- M12: 1,360,593 km (0.114 R)
- M13: 1,480,271 km (0.094 R)
- M14: 1,629,719 km (0.099 R)
- M15: 1,719,777 km (0.115 R)
- M16: 1,806,095 km (0.106 R)
- M17: 1,921,734 km (0.082 R)
- M18: 2,201,632 km (0.077 R)
- M19: 2,290,044 km (0.111 R)
- M20: 2,550,045 km (0.079 R)
- M21: 2,705,777 km (0.063 R)
- M22: 2,858,367 km (0.104 R)
- M23: 2,968,321 km (0.082 R)
- M24: 3,105,951 km (0.112 R)
- M25: 3,219,047 km (0.106 R)
- M26: 3,685,044 km (0.089 R)
- M27: 3,812,053 km (0.108 R)
- M28: 3,911,984 km (0.109 R)
- M29: 4,027,175 km (0.097 R)
- M30: 4,106,910 km (0.026 R)
- M31: 4,283,137 km (0.11 R)
- M32: 4,386,958 km (0.112 R)
- M33: 4,521,745 km (0.12 R)
- M34: 4,642,920 km (0.049 R)
- M35: 4,741,953 km (0.085 R)
- M36: 5,004,647 km (0.104 R)
- M37: 5,082,887 km (0.083 R)
- M38: 5,192,991 km (0.101 R)
- M39: 5,280,206 km (0.101 R)
- M40: 5,399,735 km (0.079 R)
- M41: 5,488,147 km (0.119 R)
Planet 5 - Gas Giant
Semi-Major Axis: 1.1 AU
Status: Outer (Cold)
Composition: Hydrogen/Helium Atmosphere
Physical Data
Mass: 392
Radius: 12.7
Gravity: 2.43 G
Time & Orbit
Eccentricity (e): 0.193
Orbit Range: 0.89 AU - 1.31 AU
Year: 769 Days
Day: 15 Hours
Environment
Temp: -185 °C
Axial Tilt: 6.3 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (46)
Outer Limit: 74,283,654 km
- M1: 236,664 km (0.081 R)
- M2: 323,281 km (0.104 R)
- M3: 469,139 km (0.118 R)
- M4: 575,204 km (0.119 R)
- M5: 787,633 km (0.107 R)
- M6: 874,549 km (0.095 R)
- M7: 954,883 km (0.095 R)
- M8: 1,096,702 km (0.035 R)
- M9: 1,320,650 km (0.078 R)
- M10: 1,426,416 km (0.059 R)
- M11: 1,510,938 km (0.092 R)
- M12: 1,653,505 km (0.063 R)
- M13: 1,787,695 km (0.114 R)
- M14: 1,899,145 km (0.036 R)
- M15: 2,067,443 km (0.07 R)
- M16: 2,170,964 km (0.099 R)
- M17: 2,269,101 km (0.087 R)
- M18: 2,368,882 km (0.102 R)
- M19: 2,484,671 km (0.087 R)
- M20: 2,595,074 km (0.084 R)
- M21: 2,874,523 km (0.096 R)
- M22: 2,982,832 km (0.106 R)
- M23: 3,348,599 km (0.106 R)
- M24: 3,537,092 km (0.096 R)
- M25: 3,754,308 km (0.104 R)
- M26: 3,838,981 km (0.098 R)
- M27: 3,958,808 km (0.118 R)
- M28: 4,158,222 km (0.109 R)
- M29: 4,263,689 km (0.099 R)
- M30: 4,396,681 km (0.104 R)
- M31: 4,558,247 km (0.059 R)
- M32: 4,658,029 km (0.034 R)
- M33: 4,878,087 km (0.112 R)
- M34: 4,989,388 km (0.1 R)
- M35: 5,655,996 km (0.114 R)
- M36: 5,743,661 km (0.051 R)
- M37: 5,871,268 km (0.072 R)
- M38: 6,059,462 km (0.055 R)
- M39: 6,139,347 km (0.029 R)
- M40: 6,300,015 km (0.063 R)
- M41: 6,401,143 km (0.113 R)
- M42: 6,523,365 km (0.092 R)
- M43: 6,708,118 km (0.086 R)
- M44: 6,915,311 km (0.114 R)
- M45: 7,040,674 km (0.051 R)
- M46: 7,177,407 km (0.108 R)
Planet 6 - Gas Giant
Semi-Major Axis: 2.87 AU
Status: Outer (Cold)
Composition: Hydrogen/Helium Atmosphere
Physical Data
Mass: 680.6
Radius: 14.5
Gravity: 3.24 G
Time & Orbit
Eccentricity (e): 0.078
Orbit Range: 2.65 AU - 3.09 AU
Year: 3242 Days
Day: 12.2 Hours
Environment
Temp: -219 °C
Axial Tilt: 31.3 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (69)
Outer Limit: 74,283,654 km
- M1: 234,420 km (0.106 R)
- M2: 387,010 km (0.102 R)
- M3: 603,927 km (0.107 R)
- M4: 953,088 km (0.082 R)
- M5: 1,391,260 km (0.062 R)
- M6: 1,573,321 km (0.104 R)
- M7: 1,833,771 km (0.034 R)
- M8: 2,183,231 km (0.112 R)
- M9: 2,459,688 km (0.086 R)
- M10: 2,634,269 km (0.119 R)
- M11: 2,763,970 km (0.087 R)
- M12: 2,979,541 km (0.09 R)
- M13: 3,080,819 km (0.062 R)
- M14: 3,235,204 km (0.096 R)
- M15: 3,623,410 km (0.114 R)
- M16: 3,731,868 km (0.052 R)
- M17: 4,120,524 km (0.092 R)
- M18: 4,659,076 km (0.039 R)
- M19: 4,817,201 km (0.067 R)
- M20: 4,976,972 km (0.119 R)
- M21: 5,077,950 km (0.089 R)
- M22: 5,179,377 km (0.089 R)
- M23: 5,384,626 km (0.081 R)
- M24: 5,550,679 km (0.074 R)
- M25: 5,718,528 km (0.116 R)
- M26: 5,909,265 km (0.086 R)
- M27: 6,059,163 km (0.109 R)
- M28: 7,144,046 km (0.106 R)
- M29: 7,650,585 km (0.086 R)
- M30: 7,743,934 km (0.037 R)
- M31: 7,861,219 km (0.086 R)
- M32: 8,650,048 km (0.102 R)
- M33: 8,894,192 km (0.066 R)
- M34: 9,239,763 km (0.109 R)
- M35: 9,867,924 km (0.088 R)
- M36: 10,097,407 km (0.069 R)
- M37: 10,457,938 km (0.055 R)
- M38: 10,587,789 km (0.097 R)
- M39: 10,849,137 km (0.105 R)
- M40: 10,954,154 km (0.111 R)
- M41: 11,165,387 km (0.036 R)
- M42: 11,271,601 km (0.111 R)
- M43: 11,431,372 km (0.102 R)
- M44: 11,618,818 km (0.091 R)
- M45: 12,461,203 km (0.09 R)
- M46: 12,654,185 km (0.076 R)
- M47: 12,820,388 km (0.082 R)
- M48: 12,959,514 km (0.087 R)
- M49: 13,889,863 km (0.077 R)
- M50: 14,004,006 km (0.057 R)
- M51: 14,118,598 km (0.075 R)
- M52: 14,958,590 km (0.108 R)
- M53: 15,488,017 km (0.1 R)
- M54: 16,053,647 km (0.083 R)
- M55: 16,233,763 km (0.109 R)
- M56: 16,777,850 km (0.072 R)
- M57: 17,052,212 km (0.091 R)
- M58: 17,822,043 km (0.09 R)
- M59: 18,289,536 km (0.064 R)
- M60: 18,477,581 km (0.102 R)
- M61: 19,045,754 km (0.083 R)
- M62: 19,812,293 km (0.083 R)
- M63: 20,653,931 km (0.114 R)
- M64: 20,849,904 km (0.032 R)
- M65: 21,144,911 km (0.099 R)
- M66: 21,639,781 km (0.062 R)
- M67: 22,205,261 km (0.079 R)
- M68: 22,305,491 km (0.076 R)
- M69: 22,506,551 km (0.099 R)
Planet 7 - Ice Giant
Semi-Major Axis: 8.75 AU
Status: Outer (Cold)
Composition: Methane/Ammonia Ices
Physical Data
Mass: 520
Radius: 4.3
Gravity: 28.12 G
Time & Orbit
Eccentricity (e): 0.167
Orbit Range: 7.29 AU - 10.21 AU
Year: 17260 Days
Day: 15.7 Hours
Environment
Temp: -227 °C
Axial Tilt: 31.8 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (74)
Outer Limit: 74,283,654 km
- M1: 180,714 km (0.117 R)
- M2: 798,853 km (0.072 R)
- M3: 864,376 km (0.11 R)
- M4: 1,071,270 km (0.109 R)
- M5: 1,168,210 km (0.043 R)
- M6: 2,071,332 km (0.116 R)
- M7: 2,409,723 km (0.075 R)
- M8: 4,305,128 km (0.098 R)
- M9: 4,420,916 km (0.092 R)
- M10: 5,676,192 km (0.07 R)
- M11: 5,760,715 km (0.119 R)
- M12: 7,398,512 km (0.057 R)
- M13: 8,005,880 km (0.106 R)
- M14: 8,291,612 km (0.113 R)
- M15: 8,824,030 km (0.108 R)
- M16: 8,971,085 km (0.063 R)
- M17: 9,168,554 km (0.11 R)
- M18: 9,617,946 km (0.068 R)
- M19: 9,972,493 km (0.112 R)
- M20: 10,590,183 km (0.111 R)
- M21: 10,851,231 km (0.116 R)
- M22: 13,181,816 km (0.115 R)
- M23: 13,462,612 km (0.111 R)
- M24: 14,258,921 km (0.107 R)
- M25: 14,316,516 km (0.05 R)
- M26: 14,604,941 km (0.074 R)
- M27: 15,070,639 km (0.066 R)
- M28: 17,103,225 km (0.038 R)
- M29: 17,347,967 km (0.114 R)
- M30: 18,400,837 km (0.12 R)
- M31: 18,777,525 km (0.072 R)
- M32: 19,474,501 km (0.079 R)
- M33: 19,538,230 km (0.113 R)
- M34: 19,602,108 km (0.084 R)
- M35: 19,858,220 km (0.104 R)
- M36: 21,024,186 km (0.094 R)
- M37: 22,145,721 km (0.119 R)
- M38: 23,151,318 km (0.119 R)
- M39: 23,218,936 km (0.111 R)
- M40: 23,625,693 km (0.113 R)
- M41: 24,308,906 km (0.087 R)
- M42: 24,515,201 km (0.036 R)
- M43: 24,584,016 km (0.054 R)
- M44: 25,485,344 km (0.106 R)
- M45: 25,555,056 km (0.059 R)
- M46: 27,391,370 km (0.106 R)
- M47: 27,534,386 km (0.083 R)
- M48: 27,821,015 km (0.037 R)
- M49: 28,180,948 km (0.066 R)
- M50: 31,938,098 km (0.042 R)
- M51: 33,836,495 km (0.104 R)
- M52: 34,915,395 km (0.069 R)
- M53: 35,225,811 km (0.078 R)
- M54: 35,927,425 km (0.091 R)
- M55: 36,005,664 km (0.114 R)
- M56: 36,476,299 km (0.08 R)
- M57: 37,423,703 km (0.087 R)
- M58: 41,211,371 km (0.066 R)
- M59: 41,375,181 km (0.097 R)
- M60: 43,525,201 km (0.117 R)
- M61: 44,277,828 km (0.072 R)
- M62: 44,697,749 km (0.109 R)
- M63: 46,050,563 km (0.112 R)
- M64: 46,390,898 km (0.049 R)
- M65: 47,073,962 km (0.104 R)
- M66: 51,859,448 km (0.118 R)
- M67: 52,213,397 km (0.046 R)
- M68: 53,727,028 km (0.107 R)
- M69: 54,085,165 km (0.035 R)
- M70: 55,074,456 km (0.115 R)
- M71: 55,345,228 km (0.074 R)
- M72: 55,525,942 km (0.109 R)
- M73: 57,619,116 km (0.105 R)
- M74: 62,539,839 km (0.113 R)
Planet 8 - Ice Giant
Semi-Major Axis: 10.73 AU
Status: Outer (Cold)
Composition: Methane/Ammonia Ices
Physical Data
Mass: 464.1
Radius: 6.2
Gravity: 12.07 G
Time & Orbit
Eccentricity (e): 0.114
Orbit Range: 9.51 AU - 11.95 AU
Year: 23438 Days
Day: 17.4 Hours
Environment
Temp: -237 °C
Axial Tilt: 6.1 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (90)
Outer Limit: 74,283,654 km
- M1: 130,150 km (0.084 R)
- M2: 286,929 km (0.114 R)
- M3: 406,308 km (0.101 R)
- M4: 521,947 km (0.104 R)
- M5: 931,845 km (0.069 R)
- M6: 1,335,311 km (0.107 R)
- M7: 2,181,735 km (0.114 R)
- M8: 2,284,359 km (0.063 R)
- M9: 2,710,863 km (0.096 R)
- M10: 3,046,860 km (0.067 R)
- M11: 3,317,333 km (0.112 R)
- M12: 3,356,527 km (0.093 R)
- M13: 4,174,379 km (0.1 R)
- M14: 4,345,070 km (0.11 R)
- M15: 4,474,622 km (0.093 R)
- M16: 4,826,327 km (0.04 R)
- M17: 5,141,380 km (0.109 R)
- M18: 5,933,949 km (0.088 R)
- M19: 8,262,440 km (0.11 R)
- M20: 8,638,828 km (0.106 R)
- M21: 8,802,040 km (0.095 R)
- M22: 9,352,859 km (0.106 R)
- M23: 9,745,254 km (0.071 R)
- M24: 9,915,048 km (0.067 R)
- M25: 10,372,518 km (0.06 R)
- M26: 10,603,946 km (0.09 R)
- M27: 10,778,527 km (0.041 R)
- M28: 10,895,512 km (0.073 R)
- M29: 11,189,771 km (0.078 R)
- M30: 11,725,930 km (0.059 R)
- M31: 12,088,106 km (0.109 R)
- M32: 12,885,164 km (0.081 R)
- M33: 12,947,247 km (0.107 R)
- M34: 13,009,330 km (0.107 R)
- M35: 13,762,555 km (0.1 R)
- M36: 14,336,712 km (0.088 R)
- M37: 15,179,846 km (0.074 R)
- M38: 15,574,485 km (0.103 R)
- M39: 15,640,457 km (0.088 R)
- M40: 15,706,729 km (0.07 R)
- M41: 16,239,447 km (0.088 R)
- M42: 17,391,201 km (0.096 R)
- M43: 18,779,619 km (0.115 R)
- M44: 19,132,371 km (0.098 R)
- M45: 19,772,650 km (0.098 R)
- M46: 21,074,151 km (0.07 R)
- M47: 21,367,064 km (0.119 R)
- M48: 23,911,424 km (0.117 R)
- M49: 25,063,926 km (0.093 R)
- M50: 25,685,954 km (0.087 R)
- M51: 28,063,513 km (0.114 R)
- M52: 28,466,680 km (0.084 R)
- M53: 28,628,395 km (0.116 R)
- M54: 29,034,104 km (0.116 R)
- M55: 31,675,704 km (0.028 R)
- M56: 32,685,788 km (0.045 R)
- M57: 32,770,461 km (0.098 R)
- M58: 33,792,065 km (0.073 R)
- M59: 35,083,842 km (0.055 R)
- M60: 35,170,459 km (0.052 R)
- M61: 36,391,627 km (0.118 R)
- M62: 37,981,852 km (0.079 R)
- M63: 38,964,860 km (0.053 R)
- M64: 39,865,589 km (0.106 R)
- M65: 46,360,679 km (0.03 R)
- M66: 46,836,999 km (0.107 R)
- M67: 47,794,425 km (0.094 R)
- M68: 48,372,172 km (0.113 R)
- M69: 48,468,663 km (0.095 R)
- M70: 48,758,434 km (0.054 R)
- M71: 49,728,875 km (0.035 R)
- M72: 53,473,908 km (0.04 R)
- M73: 54,876,389 km (0.081 R)
- M74: 55,380,234 km (0.09 R)
- M75: 56,697,443 km (0.093 R)
- M76: 57,513,051 km (0.111 R)
- M77: 57,819,876 km (0.048 R)
- M78: 59,259,157 km (0.094 R)
- M79: 59,776,018 km (0.059 R)
- M80: 59,983,211 km (0.102 R)
- M81: 61,126,887 km (0.05 R)
- M82: 62,277,743 km (0.099 R)
- M83: 63,119,231 km (0.12 R)
- M84: 64,282,355 km (0.068 R)
- M85: 64,707,213 km (0.082 R)
- M86: 65,773,097 km (0.094 R)
- M87: 67,275,060 km (0.06 R)
- M88: 68,246,549 km (0.12 R)
- M89: 69,440,340 km (0.078 R)
- M90: 72,178,878 km (0.092 R)
Kuiper Belt
Range: 30 - 59 AU
Composition
Type: Dwarf Planets/TNOs (Ices)
Reservoir of dwarf planets and volatile ices.
Outer System
Oort Cloud
Range: 242 - 17,782 AU
Composition
Type: Cometary Reservoir
System's final boundary, containing trillions of icy planetesimals.