Star System Generated (Seed: 1767248878)
Star Details
Spectral Class: M6V
Temperature: 2,833 K
Mass: 0.29 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: 10.8 AU
Planetary System (6 Planets)
Planet 1 - Gas Giant
Semi-Major Axis: 0.93 AU
Status: Outer (Cold)
Composition: Hydrogen/Helium Atmosphere
Physical Data
Mass: 67.4
Radius: 9.9
Gravity: 0.69 G
Time & Orbit
Eccentricity (e): 0.059
Orbit Range: 0.88 AU - 0.98 AU
Year: 608 Days
Day: 7 Hours
Environment
Temp: -165 °C
Axial Tilt: 17.3 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (35)
Outer Limit: 62,913,648 km
- M1: 129,253 km (0.056 R)
- M2: 190,887 km (0.105 R)
- M3: 256,860 km (0.082 R)
- M4: 350,358 km (0.118 R)
- M5: 442,959 km (0.119 R)
- M6: 535,560 km (0.08 R)
- M7: 625,170 km (0.061 R)
- M8: 745,745 km (0.086 R)
- M9: 809,324 km (0.068 R)
- M10: 920,625 km (0.073 R)
- M11: 989,291 km (0.099 R)
- M12: 1,063,192 km (0.041 R)
- M13: 1,176,138 km (0.116 R)
- M14: 1,244,505 km (0.101 R)
- M15: 1,317,808 km (0.104 R)
- M16: 1,399,787 km (0.094 R)
- M17: 1,476,381 km (0.057 R)
- M18: 1,543,102 km (0.092 R)
- M19: 1,629,869 km (0.093 R)
- M20: 1,718,431 km (0.12 R)
- M21: 1,808,489 km (0.114 R)
- M22: 1,932,655 km (0.086 R)
- M23: 2,051,436 km (0.111 R)
- M24: 2,172,610 km (0.028 R)
- M25: 2,253,393 km (0.099 R)
- M26: 2,396,109 km (0.098 R)
- M27: 2,479,734 km (0.115 R)
- M28: 2,564,257 km (0.114 R)
- M29: 2,663,291 km (0.11 R)
- M30: 2,745,420 km (0.027 R)
- M31: 2,888,884 km (0.112 R)
- M32: 2,987,469 km (0.112 R)
- M33: 3,053,741 km (0.049 R)
- M34: 3,125,399 km (0.097 R)
- M35: 3,202,442 km (0.117 R)
Planet 2 - Gas Giant
Semi-Major Axis: 2.29 AU
Status: Outer (Cold)
Composition: Hydrogen/Helium Atmosphere
Physical Data
Mass: 688.3
Radius: 11.2
Gravity: 5.49 G
Time & Orbit
Eccentricity (e): 0.102
Orbit Range: 2.06 AU - 2.52 AU
Year: 2350 Days
Day: 10.9 Hours
Environment
Temp: -212 °C
Axial Tilt: 47.8 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (70)
Outer Limit: 62,913,648 km
- M1: 160,219 km (0.064 R)
- M2: 243,097 km (0.076 R)
- M3: 534,513 km (0.094 R)
- M4: 730,337 km (0.094 R)
- M5: 828,623 km (0.094 R)
- M6: 941,270 km (0.071 R)
- M7: 1,079,648 km (0.099 R)
- M8: 1,501,963 km (0.086 R)
- M9: 1,998,927 km (0.119 R)
- M10: 2,101,850 km (0.094 R)
- M11: 2,380,252 km (0.054 R)
- M12: 2,531,046 km (0.112 R)
- M13: 2,670,920 km (0.088 R)
- M14: 3,439,405 km (0.091 R)
- M15: 3,547,863 km (0.118 R)
- M16: 3,673,376 km (0.084 R)
- M17: 3,993,665 km (0.102 R)
- M18: 4,373,045 km (0.099 R)
- M19: 4,575,750 km (0.12 R)
- M20: 5,025,591 km (0.044 R)
- M21: 5,273,624 km (0.082 R)
- M22: 5,363,233 km (0.086 R)
- M23: 5,598,700 km (0.047 R)
- M24: 5,726,756 km (0.076 R)
- M25: 5,800,508 km (0.096 R)
- M26: 5,892,959 km (0.091 R)
- M27: 6,004,709 km (0.054 R)
- M28: 6,192,604 km (0.094 R)
- M29: 6,904,241 km (0.118 R)
- M30: 7,101,112 km (0.112 R)
- M31: 7,319,824 km (0.044 R)
- M32: 7,581,171 km (0.087 R)
- M33: 7,723,140 km (0.098 R)
- M34: 7,825,165 km (0.094 R)
- M35: 8,051,058 km (0.106 R)
- M36: 8,216,663 km (0.119 R)
- M37: 8,362,671 km (0.116 R)
- M38: 8,488,333 km (0.104 R)
- M39: 8,614,743 km (0.111 R)
- M40: 8,762,994 km (0.088 R)
- M41: 9,148,209 km (0.104 R)
- M42: 9,299,452 km (0.067 R)
- M43: 9,538,959 km (0.102 R)
- M44: 9,957,234 km (0.079 R)
- M45: 10,068,385 km (0.093 R)
- M46: 10,157,546 km (0.034 R)
- M47: 10,517,030 km (0.088 R)
- M48: 10,630,125 km (0.118 R)
- M49: 10,903,441 km (0.117 R)
- M50: 11,086,848 km (0.11 R)
- M51: 11,271,452 km (0.077 R)
- M52: 11,387,240 km (0.062 R)
- M53: 11,480,141 km (0.11 R)
- M54: 11,573,340 km (0.114 R)
- M55: 11,878,071 km (0.112 R)
- M56: 12,256,703 km (0.087 R)
- M57: 12,495,461 km (0.114 R)
- M58: 12,711,630 km (0.098 R)
- M59: 13,025,935 km (0.064 R)
- M60: 13,465,604 km (0.086 R)
- M61: 13,736,525 km (0.111 R)
- M62: 13,810,875 km (0.079 R)
- M63: 14,484,963 km (0.119 R)
- M64: 15,554,887 km (0.106 R)
- M65: 15,658,110 km (0.093 R)
- M66: 15,969,124 km (0.1 R)
- M67: 16,518,447 km (0.098 R)
- M68: 17,233,824 km (0.102 R)
- M69: 17,959,224 km (0.102 R)
- M70: 18,148,914 km (0.085 R)
Planet 3 - Gas Giant
Semi-Major Axis: 4.08 AU
Status: Outer (Cold)
Composition: Hydrogen/Helium Atmosphere
Physical Data
Mass: 163
Radius: 10.7
Gravity: 1.42 G
Time & Orbit
Eccentricity (e): 0.166
Orbit Range: 3.4 AU - 4.76 AU
Year: 5590 Days
Day: 14.6 Hours
Environment
Temp: -211 °C
Axial Tilt: 31.6 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (73)
Outer Limit: 62,913,648 km
- M1: 150,196 km (0.109 R)
- M2: 398,379 km (0.087 R)
- M3: 560,842 km (0.089 R)
- M4: 728,542 km (0.114 R)
- M5: 863,479 km (0.12 R)
- M6: 975,827 km (0.03 R)
- M7: 1,215,782 km (0.05 R)
- M8: 1,366,726 km (0.086 R)
- M9: 1,438,533 km (0.067 R)
- M10: 1,791,285 km (0.107 R)
- M11: 1,950,756 km (0.046 R)
- M12: 2,185,026 km (0.099 R)
- M13: 2,312,783 km (0.053 R)
- M14: 2,620,805 km (0.117 R)
- M15: 2,942,141 km (0.108 R)
- M16: 3,083,661 km (0.03 R)
- M17: 3,227,574 km (0.092 R)
- M18: 3,605,608 km (0.103 R)
- M19: 3,689,682 km (0.086 R)
- M20: 3,757,450 km (0.037 R)
- M21: 3,825,666 km (0.081 R)
- M22: 4,621,078 km (0.107 R)
- M23: 4,712,632 km (0.086 R)
- M24: 4,860,285 km (0.043 R)
- M25: 4,953,335 km (0.11 R)
- M26: 5,217,375 km (0.091 R)
- M27: 5,485,904 km (0.113 R)
- M28: 5,582,843 km (0.099 R)
- M29: 5,759,069 km (0.095 R)
- M30: 6,056,619 km (0.037 R)
- M31: 6,339,060 km (0.045 R)
- M32: 6,522,766 km (0.08 R)
- M33: 7,254,450 km (0.049 R)
- M34: 7,403,898 km (0.097 R)
- M35: 7,597,627 km (0.083 R)
- M36: 7,771,161 km (0.071 R)
- M37: 7,924,199 km (0.118 R)
- M38: 8,840,187 km (0.072 R)
- M39: 9,345,678 km (0.103 R)
- M40: 9,508,441 km (0.115 R)
- M41: 9,954,990 km (0.083 R)
- M42: 10,026,049 km (0.119 R)
- M43: 10,145,129 km (0.06 R)
- M44: 10,553,083 km (0.092 R)
- M45: 10,674,107 km (0.089 R)
- M46: 10,819,965 km (0.108 R)
- M47: 11,138,160 km (0.075 R)
- M48: 11,335,629 km (0.112 R)
- M49: 12,238,153 km (0.03 R)
- M50: 12,493,068 km (0.086 R)
- M51: 13,059,894 km (0.075 R)
- M52: 13,241,955 km (0.114 R)
- M53: 13,346,374 km (0.112 R)
- M54: 13,451,242 km (0.079 R)
- M55: 13,529,931 km (0.102 R)
- M56: 13,687,756 km (0.114 R)
- M57: 13,978,874 km (0.082 R)
- M58: 14,191,901 km (0.114 R)
- M59: 14,405,976 km (0.066 R)
- M60: 14,756,184 km (0.082 R)
- M61: 15,054,782 km (0.102 R)
- M62: 15,273,045 km (0.114 R)
- M63: 15,795,890 km (0.06 R)
- M64: 15,879,066 km (0.053 R)
- M65: 16,045,718 km (0.03 R)
- M66: 16,324,718 km (0.105 R)
- M67: 16,436,767 km (0.042 R)
- M68: 17,571,317 km (0.065 R)
- M69: 17,686,208 km (0.114 R)
- M70: 18,848,434 km (0.118 R)
- M71: 19,201,784 km (0.1 R)
- M72: 19,409,127 km (0.095 R)
- M73: 19,646,838 km (0.115 R)
Planet 4 - Gas Giant
Semi-Major Axis: 4.57 AU
Status: Outer (Cold)
Composition: Hydrogen/Helium Atmosphere
Physical Data
Mass: 344.4
Radius: 13.8
Gravity: 1.81 G
Time & Orbit
Eccentricity (e): 0.241
Orbit Range: 3.47 AU - 5.67 AU
Year: 6626 Days
Day: 6.9 Hours
Environment
Temp: -212 °C
Axial Tilt: 38.2 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (78)
Outer Limit: 62,913,648 km
- M1: 196,272 km (0.078 R)
- M2: 285,433 km (0.107 R)
- M3: 446,550 km (0.083 R)
- M4: 563,535 km (0.081 R)
- M5: 659,876 km (0.109 R)
- M6: 811,120 km (0.053 R)
- M7: 1,014,872 km (0.074 R)
- M8: 1,179,579 km (0.117 R)
- M9: 1,338,901 km (0.062 R)
- M10: 1,505,852 km (0.111 R)
- M11: 1,844,542 km (0.095 R)
- M12: 2,370,827 km (0.102 R)
- M13: 2,651,323 km (0.108 R)
- M14: 3,002,579 km (0.117 R)
- M15: 3,306,711 km (0.101 R)
- M16: 3,410,383 km (0.041 R)
- M17: 3,536,344 km (0.059 R)
- M18: 3,749,671 km (0.082 R)
- M19: 3,989,476 km (0.104 R)
- M20: 4,144,609 km (0.067 R)
- M21: 4,415,531 km (0.043 R)
- M22: 4,553,161 km (0.066 R)
- M23: 4,856,246 km (0.087 R)
- M24: 5,142,128 km (0.106 R)
- M25: 5,457,929 km (0.091 R)
- M26: 5,880,842 km (0.099 R)
- M27: 6,469,809 km (0.12 R)
- M28: 6,837,670 km (0.056 R)
- M29: 7,347,799 km (0.107 R)
- M30: 8,206,790 km (0.065 R)
- M31: 8,576,596 km (0.11 R)
- M32: 9,155,988 km (0.108 R)
- M33: 9,421,076 km (0.059 R)
- M34: 9,958,581 km (0.079 R)
- M35: 10,383,588 km (0.113 R)
- M36: 10,536,926 km (0.102 R)
- M37: 10,721,829 km (0.118 R)
- M38: 10,814,580 km (0.117 R)
- M39: 10,907,779 km (0.081 R)
- M40: 11,251,555 km (0.077 R)
- M41: 11,377,516 km (0.074 R)
- M42: 11,472,212 km (0.113 R)
- M43: 11,853,836 km (0.087 R)
- M44: 12,110,546 km (0.038 R)
- M45: 12,793,311 km (0.095 R)
- M46: 13,056,753 km (0.053 R)
- M47: 13,455,281 km (0.054 R)
- M48: 13,756,721 km (0.111 R)
- M49: 13,857,700 km (0.052 R)
- M50: 14,743,469 km (0.053 R)
- M51: 15,297,729 km (0.06 R)
- M52: 15,542,321 km (0.1 R)
- M53: 15,647,488 km (0.086 R)
- M54: 15,964,636 km (0.095 R)
- M55: 16,284,027 km (0.089 R)
- M56: 16,533,706 km (0.08 R)
- M57: 16,748,828 km (0.096 R)
- M58: 17,363,526 km (0.099 R)
- M59: 18,577,662 km (0.077 R)
- M60: 18,689,412 km (0.101 R)
- M61: 18,876,110 km (0.085 R)
- M62: 19,326,848 km (0.111 R)
- M63: 19,591,337 km (0.101 R)
- M64: 20,430,731 km (0.114 R)
- M65: 20,854,691 km (0.086 R)
- M66: 21,750,782 km (0.083 R)
- M67: 22,183,868 km (0.057 R)
- M68: 22,421,280 km (0.069 R)
- M69: 22,898,497 km (0.072 R)
- M70: 23,741,930 km (0.107 R)
- M71: 23,944,336 km (0.093 R)
- M72: 24,391,484 km (0.086 R)
- M73: 24,595,536 km (0.075 R)
- M74: 25,335,297 km (0.113 R)
- M75: 25,624,918 km (0.072 R)
- M76: 25,915,587 km (0.082 R)
- M77: 26,249,190 km (0.107 R)
- M78: 27,216,341 km (0.044 R)
Planet 5 - Gas Giant
Semi-Major Axis: 5.38 AU
Status: Outer (Cold)
Composition: Hydrogen/Helium Atmosphere
Physical Data
Mass: 728.9
Radius: 12
Gravity: 5.06 G
Time & Orbit
Eccentricity (e): 0.209
Orbit Range: 4.26 AU - 6.5 AU
Year: 8464 Days
Day: 11 Hours
Environment
Temp: -227 °C
Axial Tilt: 27.6 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (78)
Outer Limit: 62,913,648 km
- M1: 150,645 km (0.082 R)
- M2: 485,295 km (0.105 R)
- M3: 666,608 km (0.101 R)
- M4: 1,045,540 km (0.028 R)
- M5: 1,288,337 km (0.089 R)
- M6: 2,786,410 km (0.065 R)
- M7: 2,941,992 km (0.083 R)
- M8: 3,261,982 km (0.057 R)
- M9: 3,398,714 km (0.116 R)
- M10: 3,820,430 km (0.091 R)
- M11: 4,022,986 km (0.111 R)
- M12: 4,110,949 km (0.074 R)
- M13: 4,199,511 km (0.104 R)
- M14: 5,571,174 km (0.113 R)
- M15: 6,102,097 km (0.091 R)
- M16: 6,203,375 km (0.096 R)
- M17: 6,788,452 km (0.086 R)
- M18: 6,893,619 km (0.106 R)
- M19: 7,391,332 km (0.07 R)
- M20: 7,827,260 km (0.103 R)
- M21: 8,011,415 km (0.049 R)
- M22: 8,159,666 km (0.096 R)
- M23: 8,421,463 km (0.091 R)
- M24: 9,379,039 km (0.119 R)
- M25: 10,049,985 km (0.075 R)
- M26: 10,941,139 km (0.115 R)
- M27: 11,023,418 km (0.103 R)
- M28: 11,188,574 km (0.035 R)
- M29: 11,688,979 km (0.051 R)
- M30: 12,668,696 km (0.113 R)
- M31: 12,841,780 km (0.12 R)
- M32: 13,365,822 km (0.093 R)
- M33: 13,674,741 km (0.101 R)
- M34: 14,615,562 km (0.111 R)
- M35: 14,888,130 km (0.081 R)
- M36: 15,530,952 km (0.081 R)
- M37: 15,855,729 km (0.037 R)
- M38: 16,042,277 km (0.057 R)
- M39: 17,177,276 km (0.112 R)
- M40: 17,609,614 km (0.091 R)
- M41: 17,851,364 km (0.087 R)
- M42: 18,094,162 km (0.114 R)
- M43: 18,632,265 km (0.119 R)
- M44: 20,887,752 km (0.117 R)
- M45: 22,229,944 km (0.059 R)
- M46: 22,806,195 km (0.062 R)
- M47: 22,964,171 km (0.117 R)
- M48: 23,599,962 km (0.1 R)
- M49: 23,759,732 km (0.105 R)
- M50: 24,026,914 km (0.101 R)
- M51: 24,134,026 km (0.082 R)
- M52: 25,268,726 km (0.108 R)
- M53: 25,377,783 km (0.094 R)
- M54: 25,870,109 km (0.081 R)
- M55: 25,979,914 km (0.04 R)
- M56: 26,919,838 km (0.066 R)
- M57: 27,702,235 km (0.092 R)
- M58: 29,805,880 km (0.107 R)
- M59: 30,267,539 km (0.049 R)
- M60: 30,557,160 km (0.116 R)
- M61: 30,847,829 km (0.105 R)
- M62: 31,022,559 km (0.065 R)
- M63: 32,196,454 km (0.115 R)
- M64: 33,325,020 km (0.062 R)
- M65: 33,804,032 km (0.027 R)
- M66: 34,285,438 km (0.108 R)
- M67: 34,829,675 km (0.08 R)
- M68: 35,011,736 km (0.073 R)
- M69: 35,498,677 km (0.099 R)
- M70: 35,865,491 km (0.099 R)
- M71: 36,110,682 km (0.104 R)
- M72: 36,294,837 km (0.046 R)
- M73: 36,787,762 km (0.104 R)
- M74: 37,096,981 km (0.099 R)
- M75: 40,172,414 km (0.077 R)
- M76: 41,451,027 km (0.11 R)
- M77: 41,901,616 km (0.103 R)
- M78: 42,613,103 km (0.099 R)
Planet 6 - Ice Giant
Semi-Major Axis: 8.84 AU
Status: Outer (Cold)
Composition: Methane/Ammonia Ices
Physical Data
Mass: 487.4
Radius: 6.5
Gravity: 11.54 G
Time & Orbit
Eccentricity (e): 0.086
Orbit Range: 8.08 AU - 9.6 AU
Year: 17827 Days
Day: 23.5 Hours
Environment
Temp: -235 °C
Axial Tilt: 38.6 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (93)
Outer Limit: 62,913,648 km
- M1: 245,341 km (0.113 R)
- M2: 299,944 km (0.054 R)
- M3: 700,716 km (0.116 R)
- M4: 1,294,770 km (0.098 R)
- M5: 2,008,501 km (0.062 R)
- M6: 2,067,742 km (0.09 R)
- M7: 2,157,800 km (0.096 R)
- M8: 2,791,347 km (0.078 R)
- M9: 3,267,068 km (0.112 R)
- M10: 3,841,075 km (0.078 R)
- M11: 4,330,410 km (0.114 R)
- M12: 4,720,112 km (0.088 R)
- M13: 4,919,227 km (0.119 R)
- M14: 4,999,710 km (0.109 R)
- M15: 6,127,529 km (0.11 R)
- M16: 7,284,519 km (0.102 R)
- M17: 7,376,222 km (0.079 R)
- M18: 8,029,367 km (0.036 R)
- M19: 8,603,822 km (0.062 R)
- M20: 8,652,292 km (0.095 R)
- M21: 9,440,224 km (0.086 R)
- M22: 11,508,115 km (0.103 R)
- M23: 12,373,090 km (0.112 R)
- M24: 12,758,006 km (0.117 R)
- M25: 12,868,708 km (0.059 R)
- M26: 13,652,750 km (0.075 R)
- M27: 13,822,694 km (0.108 R)
- M28: 14,915,656 km (0.103 R)
- M29: 16,576,192 km (0.11 R)
- M30: 17,921,526 km (0.117 R)
- M31: 18,107,775 km (0.054 R)
- M32: 18,419,387 km (0.064 R)
- M33: 18,858,756 km (0.1 R)
- M34: 19,048,147 km (0.101 R)
- M35: 19,747,817 km (0.079 R)
- M36: 20,650,490 km (0.091 R)
- M37: 22,562,650 km (0.103 R)
- M38: 23,235,092 km (0.04 R)
- M39: 23,777,834 km (0.069 R)
- M40: 24,256,098 km (0.041 R)
- M41: 24,806,469 km (0.082 R)
- M42: 25,013,961 km (0.109 R)
- M43: 26,978,181 km (0.081 R)
- M44: 27,120,299 km (0.074 R)
- M45: 27,763,270 km (0.119 R)
- M46: 28,991,319 km (0.102 R)
- M47: 29,282,886 km (0.053 R)
- M48: 29,721,955 km (0.111 R)
- M49: 30,163,269 km (0.09 R)
- M50: 31,201,478 km (0.119 R)
- M51: 31,500,225 km (0.1 R)
- M52: 31,724,921 km (0.109 R)
- M53: 31,950,066 km (0.045 R)
- M54: 32,856,330 km (0.083 R)
- M55: 34,616,648 km (0.079 R)
- M56: 35,313,924 km (0.044 R)
- M57: 35,937,448 km (0.102 R)
- M58: 36,486,023 km (0.074 R)
- M59: 36,722,089 km (0.053 R)
- M60: 36,958,453 km (0.115 R)
- M61: 38,228,240 km (0.082 R)
- M62: 38,467,896 km (0.089 R)
- M63: 39,512,238 km (0.062 R)
- M64: 39,835,519 km (0.073 R)
- M65: 40,728,768 km (0.082 R)
- M66: 41,464,640 km (0.119 R)
- M67: 42,204,850 km (0.096 R)
- M68: 42,700,767 km (0.095 R)
- M69: 43,281,656 km (0.076 R)
- M70: 44,200,037 km (0.118 R)
- M71: 44,535,436 km (0.087 R)
- M72: 46,566,227 km (0.065 R)
- M73: 47,164,169 km (0.117 R)
- M74: 47,249,889 km (0.104 R)
- M75: 47,335,459 km (0.101 R)
- M76: 47,936,693 km (0.058 R)
- M77: 49,755,653 km (0.088 R)
- M78: 50,192,030 km (0.105 R)
- M79: 50,892,747 km (0.034 R)
- M80: 51,685,167 km (0.109 R)
- M81: 52,570,337 km (0.084 R)
- M82: 52,747,910 km (0.03 R)
- M83: 53,549,755 km (0.049 R)
- M84: 55,436,184 km (0.112 R)
- M85: 57,344,454 km (0.089 R)
- M86: 58,628,453 km (0.071 R)
- M87: 59,273,968 km (0.06 R)
- M88: 59,643,923 km (0.116 R)
- M89: 60,200,278 km (0.048 R)
- M90: 60,479,128 km (0.115 R)
- M91: 61,224,873 km (0.117 R)
- M92: 61,879,813 km (0.092 R)
- M93: 62,443,049 km (0.074 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: 489 - 11,219 AU
Composition
Type: Cometary Reservoir
System's final boundary, containing trillions of icy planetesimals.