Star System Generated (Seed: 1768623029)
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 (7 Planets)
Planet 1 - Gas Giant
Semi-Major Axis: 0.57 AU
Status: Outer (Cold)
Composition: Hydrogen/Helium Atmosphere
Physical Data
Mass: 754.6
Radius: 11.8
Gravity: 5.42 G
Time & Orbit
Eccentricity (e): 0.033
Orbit Range: 0.55 AU - 0.59 AU
Year: 287 Days
Day: 10.9 Hours
Environment
Temp: -147 °C
Axial Tilt: 11.2 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (35)
Outer Limit: 43,270,758 km
- M1: 146,905 km (0.1 R)
- M2: 244,593 km (0.114 R)
- M3: 331,210 km (0.067 R)
- M4: 434,283 km (0.104 R)
- M5: 518,955 km (0.065 R)
- M6: 597,793 km (0.104 R)
- M7: 691,591 km (0.116 R)
- M8: 952,490 km (0.104 R)
- M9: 1,069,176 km (0.093 R)
- M10: 1,266,496 km (0.101 R)
- M11: 1,343,688 km (0.093 R)
- M12: 1,444,816 km (0.096 R)
- M13: 1,525,898 km (0.106 R)
- M14: 1,754,484 km (0.028 R)
- M15: 1,856,061 km (0.097 R)
- M16: 1,989,652 km (0.109 R)
- M17: 2,080,458 km (0.105 R)
- M18: 2,188,318 km (0.041 R)
- M19: 2,340,459 km (0.089 R)
- M20: 2,517,882 km (0.072 R)
- M21: 2,594,476 km (0.115 R)
- M22: 2,671,968 km (0.092 R)
- M23: 2,817,975 km (0.091 R)
- M24: 2,937,803 km (0.118 R)
- M25: 3,153,374 km (0.068 R)
- M26: 3,289,956 km (0.083 R)
- M27: 3,410,383 km (0.083 R)
- M28: 3,495,504 km (0.109 R)
- M29: 3,618,473 km (0.087 R)
- M30: 3,881,466 km (0.085 R)
- M31: 3,976,910 km (0.11 R)
- M32: 4,066,818 km (0.079 R)
- M33: 4,222,400 km (0.081 R)
- M34: 4,419,570 km (0.115 R)
- M35: 4,546,130 km (0.116 R)
Planet 2 - Gas Giant
Semi-Major Axis: 0.78 AU
Status: Outer (Cold)
Composition: Hydrogen/Helium Atmosphere
Physical Data
Mass: 689.5
Radius: 12.8
Gravity: 4.21 G
Time & Orbit
Eccentricity (e): 0.239
Orbit Range: 0.59 AU - 0.97 AU
Year: 459 Days
Day: 6.3 Hours
Environment
Temp: -169 °C
Axial Tilt: 0.3 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (46)
Outer Limit: 43,270,758 km
- M1: 159,771 km (0.112 R)
- M2: 287,378 km (0.091 R)
- M3: 434,133 km (0.1 R)
- M4: 528,978 km (0.099 R)
- M5: 617,540 km (0.09 R)
- M6: 799,750 km (0.115 R)
- M7: 882,627 km (0.081 R)
- M8: 996,621 km (0.113 R)
- M9: 1,150,408 km (0.078 R)
- M10: 1,245,701 km (0.082 R)
- M11: 1,364,931 km (0.108 R)
- M12: 1,455,737 km (0.112 R)
- M13: 1,543,102 km (0.08 R)
- M14: 1,729,202 km (0.064 R)
- M15: 1,810,583 km (0.099 R)
- M16: 1,947,016 km (0.112 R)
- M17: 2,037,972 km (0.046 R)
- M18: 2,118,007 km (0.114 R)
- M19: 2,205,372 km (0.114 R)
- M20: 2,345,395 km (0.078 R)
- M21: 2,442,484 km (0.092 R)
- M22: 2,541,069 km (0.098 R)
- M23: 2,647,733 km (0.029 R)
- M24: 2,769,505 km (0.109 R)
- M25: 2,879,460 km (0.086 R)
- M26: 3,103,707 km (0.072 R)
- M27: 3,189,277 km (0.103 R)
- M28: 3,319,278 km (0.113 R)
- M29: 3,458,404 km (0.1 R)
- M30: 3,569,704 km (0.06 R)
- M31: 3,727,381 km (0.117 R)
- M32: 3,841,673 km (0.065 R)
- M33: 4,011,168 km (0.11 R)
- M34: 4,159,718 km (0.055 R)
- M35: 4,294,207 km (0.11 R)
- M36: 4,373,943 km (0.061 R)
- M37: 4,583,679 km (0.065 R)
- M38: 4,714,427 km (0.087 R)
- M39: 4,921,321 km (0.103 R)
- M40: 5,097,398 km (0.08 R)
- M41: 5,224,556 km (0.098 R)
- M42: 5,395,546 km (0.102 R)
- M43: 5,490,541 km (0.1 R)
- M44: 5,664,523 km (0.088 R)
- M45: 5,849,277 km (0.083 R)
- M46: 6,044,951 km (0.115 R)
Planet 3 - Gas Giant
Semi-Major Axis: 1.1 AU
Status: Outer (Cold)
Composition: Hydrogen/Helium Atmosphere
Physical Data
Mass: 754.2
Radius: 14.7
Gravity: 3.49 G
Time & Orbit
Eccentricity (e): 0.071
Orbit Range: 1.02 AU - 1.18 AU
Year: 769 Days
Day: 13.6 Hours
Environment
Temp: -186 °C
Axial Tilt: 3.7 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (51)
Outer Limit: 43,270,758 km
- M1: 252,970 km (0.034 R)
- M2: 348,713 km (0.111 R)
- M3: 481,256 km (0.055 R)
- M4: 579,692 km (0.083 R)
- M5: 723,156 km (0.062 R)
- M6: 858,243 km (0.032 R)
- M7: 996,920 km (0.101 R)
- M8: 1,213,987 km (0.084 R)
- M9: 1,345,483 km (0.083 R)
- M10: 1,489,247 km (0.093 R)
- M11: 1,667,418 km (0.09 R)
- M12: 1,763,011 km (0.116 R)
- M13: 1,875,808 km (0.082 R)
- M14: 1,975,589 km (0.113 R)
- M15: 2,100,952 km (0.058 R)
- M16: 2,213,001 km (0.09 R)
- M17: 2,318,917 km (0.091 R)
- M18: 2,510,551 km (0.118 R)
- M19: 2,629,931 km (0.064 R)
- M20: 2,795,087 km (0.108 R)
- M21: 3,405,296 km (0.101 R)
- M22: 3,557,288 km (0.098 R)
- M23: 3,653,330 km (0.091 R)
- M24: 3,769,866 km (0.072 R)
- M25: 3,917,370 km (0.081 R)
- M26: 4,056,795 km (0.032 R)
- M27: 4,208,039 km (0.083 R)
- M28: 4,309,915 km (0.03 R)
- M29: 4,402,366 km (0.118 R)
- M30: 4,694,381 km (0.073 R)
- M31: 4,864,025 km (0.103 R)
- M32: 4,971,137 km (0.062 R)
- M33: 5,078,997 km (0.047 R)
- M34: 5,198,676 km (0.029 R)
- M35: 5,363,383 km (0.086 R)
- M36: 5,563,395 km (0.116 R)
- M37: 5,686,813 km (0.116 R)
- M38: 5,902,085 km (0.052 R)
- M39: 6,259,474 km (0.076 R)
- M40: 6,399,647 km (0.075 R)
- M41: 6,635,713 km (0.103 R)
- M42: 6,826,600 km (0.072 R)
- M43: 6,934,908 km (0.105 R)
- M44: 7,104,403 km (0.115 R)
- M45: 7,621,264 km (0.079 R)
- M46: 7,783,727 km (0.093 R)
- M47: 7,896,823 km (0.09 R)
- M48: 8,163,107 km (0.081 R)
- M49: 8,355,041 km (0.084 R)
- M50: 8,652,292 km (0.081 R)
- M51: 8,769,726 km (0.12 R)
Planet 4 - Gas Giant
Semi-Major Axis: 1.11 AU
Status: Outer (Cold)
Composition: Hydrogen/Helium Atmosphere
Physical Data
Mass: 557.1
Radius: 9.2
Gravity: 6.58 G
Time & Orbit
Eccentricity (e): 0.128
Orbit Range: 0.97 AU - 1.25 AU
Year: 780 Days
Day: 12 Hours
Environment
Temp: -173 °C
Axial Tilt: 29.9 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (60)
Outer Limit: 43,270,758 km
- M1: 114,742 km (0.11 R)
- M2: 178,769 km (0.118 R)
- M3: 241,750 km (0.117 R)
- M4: 317,447 km (0.105 R)
- M5: 392,246 km (0.116 R)
- M6: 513,869 km (0.075 R)
- M7: 683,812 km (0.058 R)
- M8: 744,848 km (0.101 R)
- M9: 928,404 km (0.04 R)
- M10: 1,079,049 km (0.094 R)
- M11: 1,145,172 km (0.117 R)
- M12: 1,206,656 km (0.073 R)
- M13: 1,346,082 km (0.083 R)
- M14: 1,450,800 km (0.078 R)
- M15: 1,517,820 km (0.096 R)
- M16: 1,606,382 km (0.064 R)
- M17: 1,732,044 km (0.116 R)
- M18: 1,824,795 km (0.113 R)
- M19: 1,934,001 km (0.04 R)
- M20: 2,068,041 km (0.101 R)
- M21: 2,143,887 km (0.097 R)
- M22: 2,251,598 km (0.053 R)
- M23: 2,321,909 km (0.099 R)
- M24: 2,488,710 km (0.057 R)
- M25: 2,569,493 km (0.089 R)
- M26: 2,643,095 km (0.115 R)
- M27: 2,944,385 km (0.068 R)
- M28: 3,004,224 km (0.12 R)
- M29: 3,212,614 km (0.061 R)
- M30: 3,345,308 km (0.065 R)
- M31: 3,616,229 km (0.113 R)
- M32: 3,735,908 km (0.083 R)
- M33: 3,950,880 km (0.071 R)
- M34: 4,198,763 km (0.114 R)
- M35: 4,491,078 km (0.108 R)
- M36: 4,599,985 km (0.075 R)
- M37: 4,800,147 km (0.062 R)
- M38: 4,911,597 km (0.096 R)
- M39: 5,023,796 km (0.102 R)
- M40: 5,136,892 km (0.106 R)
- M41: 5,470,645 km (0.039 R)
- M42: 5,629,667 km (0.083 R)
- M43: 5,811,578 km (0.093 R)
- M44: 5,876,354 km (0.107 R)
- M45: 5,941,279 km (0.119 R)
- M46: 6,071,878 km (0.062 R)
- M47: 6,137,552 km (0.093 R)
- M48: 6,236,436 km (0.065 R)
- M49: 6,346,989 km (0.078 R)
- M50: 6,469,360 km (0.096 R)
- M51: 6,716,645 km (0.113 R)
- M52: 7,081,664 km (0.069 R)
- M53: 7,162,297 km (0.1 R)
- M54: 7,220,192 km (0.059 R)
- M55: 7,347,948 km (0.071 R)
- M56: 7,617,673 km (0.104 R)
- M57: 7,700,401 km (0.052 R)
- M58: 7,962,496 km (0.101 R)
- M59: 8,070,506 km (0.086 R)
- M60: 8,154,879 km (0.117 R)
Planet 5 - Gas Giant
Semi-Major Axis: 2.01 AU
Status: Outer (Cold)
Composition: Hydrogen/Helium Atmosphere
Physical Data
Mass: 281
Radius: 11.9
Gravity: 1.98 G
Time & Orbit
Eccentricity (e): 0.232
Orbit Range: 1.54 AU - 2.48 AU
Year: 1900 Days
Day: 11.7 Hours
Environment
Temp: -207 °C
Axial Tilt: 48.5 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (66)
Outer Limit: 43,270,758 km
- M1: 154,834 km (0.092 R)
- M2: 248,033 km (0.057 R)
- M3: 327,470 km (0.113 R)
- M4: 467,045 km (0.119 R)
- M5: 543,489 km (0.116 R)
- M6: 631,153 km (0.095 R)
- M7: 730,935 km (0.068 R)
- M8: 836,850 km (0.105 R)
- M9: 1,141,282 km (0.105 R)
- M10: 1,250,638 km (0.094 R)
- M11: 1,489,097 km (0.029 R)
- M12: 1,592,320 km (0.036 R)
- M13: 1,806,095 km (0.109 R)
- M14: 1,897,948 km (0.068 R)
- M15: 2,029,445 km (0.088 R)
- M16: 2,203,128 km (0.087 R)
- M17: 2,341,506 km (0.047 R)
- M18: 2,442,335 km (0.076 R)
- M19: 2,711,312 km (0.109 R)
- M20: 2,795,984 km (0.038 R)
- M21: 2,903,246 km (0.12 R)
- M22: 3,044,616 km (0.109 R)
- M23: 3,155,169 km (0.04 R)
- M24: 3,402,753 km (0.083 R)
- M25: 3,529,014 km (0.083 R)
- M26: 3,989,476 km (0.113 R)
- M27: 4,098,533 km (0.085 R)
- M28: 4,220,754 km (0.119 R)
- M29: 4,319,489 km (0.09 R)
- M30: 4,620,480 km (0.118 R)
- M31: 4,722,206 km (0.058 R)
- M32: 4,915,188 km (0.087 R)
- M33: 5,006,293 km (0.085 R)
- M34: 5,163,520 km (0.101 R)
- M35: 5,255,972 km (0.088 R)
- M36: 5,496,525 km (0.101 R)
- M37: 5,699,679 km (0.106 R)
- M38: 5,932,902 km (0.051 R)
- M39: 6,225,515 km (0.06 R)
- M40: 6,537,128 km (0.102 R)
- M41: 6,723,676 km (0.096 R)
- M42: 6,824,954 km (0.094 R)
- M43: 6,999,684 km (0.092 R)
- M44: 7,146,290 km (0.111 R)
- M45: 7,502,632 km (0.075 R)
- M46: 7,607,650 km (0.075 R)
- M47: 7,788,813 km (0.095 R)
- M48: 7,864,809 km (0.055 R)
- M49: 8,109,401 km (0.063 R)
- M50: 8,294,604 km (0.072 R)
- M51: 8,403,212 km (0.115 R)
- M52: 8,590,658 km (0.08 R)
- M53: 8,795,158 km (0.114 R)
- M54: 8,953,582 km (0.071 R)
- M55: 9,097,047 km (0.108 R)
- M56: 9,241,259 km (0.099 R)
- M57: 9,743,908 km (0.028 R)
- M58: 9,842,194 km (0.116 R)
- M59: 9,924,323 km (0.03 R)
- M60: 10,321,954 km (0.028 R)
- M61: 10,691,161 km (0.105 R)
- M62: 10,843,452 km (0.066 R)
- M63: 11,132,924 km (0.108 R)
- M64: 11,235,847 km (0.062 R)
- M65: 11,442,442 km (0.119 R)
- M66: 11,772,156 km (0.087 R)
Planet 6 - Gas Giant
Semi-Major Axis: 3.76 AU
Status: Outer (Cold)
Composition: Hydrogen/Helium Atmosphere
Physical Data
Mass: 557.1
Radius: 9.4
Gravity: 6.3 G
Time & Orbit
Eccentricity (e): 0.161
Orbit Range: 3.15 AU - 4.37 AU
Year: 4862 Days
Day: 14.5 Hours
Environment
Temp: -227 °C
Axial Tilt: 46.6 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (80)
Outer Limit: 43,270,758 km
- M1: 123,867 km (0.117 R)
- M2: 183,407 km (0.075 R)
- M3: 521,797 km (0.095 R)
- M4: 671,395 km (0.054 R)
- M5: 752,028 km (0.112 R)
- M6: 873,053 km (0.057 R)
- M7: 936,333 km (0.086 R)
- M8: 1,177,186 km (0.05 R)
- M9: 1,290,730 km (0.109 R)
- M10: 1,393,205 km (0.116 R)
- M11: 1,498,522 km (0.118 R)
- M12: 1,575,415 km (0.055 R)
- M13: 1,814,173 km (0.119 R)
- M14: 1,946,418 km (0.107 R)
- M15: 2,416,454 km (0.113 R)
- M16: 2,617,813 km (0.102 R)
- M17: 2,940,197 km (0.031 R)
- M18: 3,057,032 km (0.088 R)
- M19: 3,195,261 km (0.109 R)
- M20: 3,519,140 km (0.102 R)
- M21: 4,154,782 km (0.119 R)
- M22: 4,553,161 km (0.087 R)
- M23: 5,244,453 km (0.11 R)
- M24: 5,410,506 km (0.062 R)
- M25: 5,578,205 km (0.111 R)
- M26: 5,650,760 km (0.083 R)
- M27: 5,845,387 km (0.118 R)
- M28: 6,266,655 km (0.081 R)
- M29: 6,417,599 km (0.096 R)
- M30: 6,774,689 km (0.105 R)
- M31: 6,852,031 km (0.11 R)
- M32: 7,033,793 km (0.118 R)
- M33: 7,164,541 km (0.114 R)
- M34: 7,322,517 km (0.111 R)
- M35: 8,047,617 km (0.082 R)
- M36: 8,211,876 km (0.12 R)
- M37: 8,349,656 km (0.115 R)
- M38: 8,516,008 km (0.099 R)
- M39: 8,739,358 km (0.077 R)
- M40: 8,908,254 km (0.039 R)
- M41: 9,078,347 km (0.104 R)
- M42: 9,392,652 km (0.079 R)
- M43: 9,507,842 km (0.092 R)
- M44: 9,652,653 km (0.104 R)
- M45: 9,827,234 km (0.107 R)
- M46: 10,032,332 km (0.118 R)
- M47: 10,091,124 km (0.088 R)
- M48: 10,715,995 km (0.107 R)
- M49: 11,261,429 km (0.038 R)
- M50: 11,599,370 km (0.074 R)
- M51: 11,723,088 km (0.107 R)
- M52: 12,537,648 km (0.094 R)
- M53: 12,664,657 km (0.11 R)
- M54: 12,791,964 km (0.089 R)
- M55: 12,983,898 km (0.094 R)
- M56: 13,370,609 km (0.088 R)
- M57: 13,957,631 km (0.084 R)
- M58: 14,320,555 km (0.087 R)
- M59: 14,486,459 km (0.106 R)
- M60: 15,495,946 km (0.11 R)
- M61: 16,250,517 km (0.053 R)
- M62: 17,157,679 km (0.099 R)
- M63: 17,298,600 km (0.09 R)
- M64: 18,224,761 km (0.108 R)
- M65: 18,657,547 km (0.103 R)
- M66: 19,313,235 km (0.108 R)
- M67: 19,680,647 km (0.059 R)
- M68: 20,422,653 km (0.094 R)
- M69: 20,647,049 km (0.114 R)
- M70: 21,933,890 km (0.087 R)
- M71: 22,586,885 km (0.112 R)
- M72: 22,896,553 km (0.101 R)
- M73: 23,090,731 km (0.064 R)
- M74: 23,402,642 km (0.079 R)
- M75: 25,624,470 km (0.088 R)
- M76: 26,352,862 km (0.096 R)
- M77: 26,474,784 km (0.057 R)
- M78: 26,678,686 km (0.088 R)
- M79: 26,965,016 km (0.029 R)
- M80: 27,046,996 km (0.08 R)
Planet 7 - Gas Giant
Semi-Major Axis: 5.68 AU
Status: Outer (Cold)
Composition: Hydrogen/Helium Atmosphere
Physical Data
Mass: 618.4
Radius: 11
Gravity: 5.11 G
Time & Orbit
Eccentricity (e): 0.212
Orbit Range: 4.48 AU - 6.88 AU
Year: 9027 Days
Day: 7.3 Hours
Environment
Temp: -223 °C
Axial Tilt: 42.2 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (78)
Outer Limit: 43,270,758 km
- M1: 317,596 km (0.114 R)
- M2: 407,205 km (0.07 R)
- M3: 521,349 km (0.119 R)
- M4: 868,116 km (0.112 R)
- M5: 1,282,054 km (0.098 R)
- M6: 1,667,717 km (0.097 R)
- M7: 2,020,170 km (0.065 R)
- M8: 3,001,532 km (0.1 R)
- M9: 3,186,883 km (0.078 R)
- M10: 3,267,517 km (0.037 R)
- M11: 3,376,125 km (0.117 R)
- M12: 4,052,906 km (0.097 R)
- M13: 4,199,063 km (0.096 R)
- M14: 4,377,084 km (0.092 R)
- M15: 4,956,776 km (0.113 R)
- M16: 5,888,322 km (0.112 R)
- M17: 6,054,375 km (0.1 R)
- M18: 6,630,626 km (0.114 R)
- M19: 6,768,705 km (0.059 R)
- M20: 7,762,634 km (0.11 R)
- M21: 7,981,495 km (0.091 R)
- M22: 8,877,586 km (0.091 R)
- M23: 9,030,027 km (0.059 R)
- M24: 9,106,471 km (0.078 R)
- M25: 9,183,364 km (0.12 R)
- M26: 9,453,688 km (0.09 R)
- M27: 9,687,659 km (0.069 R)
- M28: 10,360,700 km (0.1 R)
- M29: 10,440,884 km (0.078 R)
- M30: 11,048,850 km (0.099 R)
- M31: 11,295,387 km (0.09 R)
- M32: 11,460,693 km (0.071 R)
- M33: 11,961,397 km (0.067 R)
- M34: 12,214,517 km (0.068 R)
- M35: 15,341,262 km (0.098 R)
- M36: 15,939,204 km (0.055 R)
- M37: 16,311,105 km (0.066 R)
- M38: 16,451,278 km (0.089 R)
- M39: 16,685,698 km (0.119 R)
- M40: 17,634,896 km (0.05 R)
- M41: 17,874,851 km (0.117 R)
- M42: 18,406,821 km (0.091 R)
- M43: 19,042,014 km (0.036 R)
- M44: 19,486,170 km (0.068 R)
- M45: 20,083,514 km (0.081 R)
- M46: 20,686,842 km (0.095 R)
- M47: 20,838,684 km (0.113 R)
- M48: 21,143,415 km (0.082 R)
- M49: 21,551,967 km (0.086 R)
- M50: 21,859,989 km (0.102 R)
- M51: 22,221,417 km (0.083 R)
- M52: 22,376,849 km (0.091 R)
- M53: 23,528,005 km (0.088 R)
- M54: 23,792,195 km (0.092 R)
- M55: 25,833,009 km (0.097 R)
- M56: 25,941,916 km (0.115 R)
- M57: 26,708,905 km (0.111 R)
- M58: 26,984,763 km (0.116 R)
- M59: 27,483,373 km (0.074 R)
- M60: 28,265,321 km (0.096 R)
- M61: 28,884,656 km (0.119 R)
- M62: 29,281,240 km (0.112 R)
- M63: 30,079,644 km (0.036 R)
- M64: 32,224,129 km (0.109 R)
- M65: 33,581,880 km (0.073 R)
- M66: 33,760,350 km (0.032 R)
- M67: 36,475,252 km (0.046 R)
- M68: 36,842,515 km (0.031 R)
- M69: 37,889,700 km (0.088 R)
- M70: 38,572,614 km (0.036 R)
- M71: 39,196,886 km (0.117 R)
- M72: 39,322,100 km (0.118 R)
- M73: 39,447,463 km (0.08 R)
- M74: 39,698,787 km (0.088 R)
- M75: 39,824,449 km (0.092 R)
- M76: 40,518,733 km (0.117 R)
- M77: 42,303,884 km (0.109 R)
- M78: 42,754,174 km (0.105 R)
Kuiper Belt
Range: 30 - 52 AU
Composition
Type: Dwarf Planets/TNOs (Ices)
Reservoir of dwarf planets and volatile ices.
Outer System
Oort Cloud
Range: 366 - 15,964 AU
Composition
Type: Cometary Reservoir
System's final boundary, containing trillions of icy planetesimals.