G0V Star System Generated (Seed: 1766228377)
Star Details
Spectral Class: G2V
Temperature: 5,800 K
Mass: 1.05 sol
Luminosity: 1.19 lux
Habitable Zone (HZ)
Inner Boundary: 1.04 AU
Outer Boundary: 1.5 AU
Physical Limits
Snow Line: 5.24 AU
Max System Radius: 20.5 AU
Planetary System (6 Planets)
Planet 1 - Terrestrial
Semi-Major Axis: 3.03 AU
Status: Outer (Cold)
Composition: Rocky (Silicates/Metals)
Physical Data
Mass: 4.01
Radius: 1.74
Gravity: 1.32 G
Time & Orbit
Eccentricity (e): 0.146
Orbit Range: 2.59 AU - 3.47 AU
Year: 1880 Days
Day: 45.7 Hours
Environment
Temp: -92 °C
Axial Tilt: 11.6 °
Atmosphere: Thin Nâ‚‚/CHâ‚„
Biome: Ice Cap/Desert
Satellites (1)
Outer Limit: 82,315,145 km
- M1: 81,680 km (0.101 R)
Planet 2 - Gas Giant
Semi-Major Axis: 10.82 AU
Status: Outer (Cold)
Composition: Hydrogen/Helium Atmosphere
Physical Data
Mass: 785.4
Radius: 8.3
Gravity: 11.4 G
Time & Orbit
Eccentricity (e): 0.114
Orbit Range: 9.59 AU - 12.05 AU
Year: 12686 Days
Day: 7.7 Hours
Environment
Temp: -180 °C
Axial Tilt: 25.5 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (95)
Outer Limit: 82,315,145 km
- M1: 108,458 km (0.074 R)
- M2: 190,139 km (0.046 R)
- M3: 294,708 km (0.072 R)
- M4: 363,672 km (0.077 R)
- M5: 487,539 km (0.099 R)
- M6: 663,467 km (0.119 R)
- M7: 860,188 km (0.095 R)
- M8: 1,053,468 km (0.091 R)
- M9: 1,143,975 km (0.085 R)
- M10: 1,260,811 km (0.073 R)
- M11: 1,406,370 km (0.075 R)
- M12: 1,687,913 km (0.077 R)
- M13: 3,144,697 km (0.06 R)
- M14: 3,894,631 km (0.041 R)
- M15: 4,773,219 km (0.072 R)
- M16: 5,002,254 km (0.066 R)
- M17: 5,832,073 km (0.03 R)
- M18: 6,450,660 km (0.055 R)
- M19: 7,395,520 km (0.093 R)
- M20: 8,154,879 km (0.087 R)
- M21: 8,520,796 km (0.094 R)
- M22: 8,985,746 km (0.116 R)
- M23: 9,126,966 km (0.103 R)
- M24: 9,602,687 km (0.109 R)
- M25: 9,698,729 km (0.052 R)
- M26: 9,988,949 km (0.073 R)
- M27: 10,479,181 km (0.047 R)
- M28: 11,027,308 km (0.114 R)
- M29: 11,178,551 km (0.117 R)
- M30: 11,279,679 km (0.063 R)
- M31: 12,203,596 km (0.114 R)
- M32: 12,255,656 km (0.09 R)
- M33: 12,569,512 km (0.117 R)
- M34: 13,959,875 km (0.057 R)
- M35: 14,783,860 km (0.113 R)
- M36: 14,950,662 km (0.082 R)
- M37: 15,173,862 km (0.051 R)
- M38: 15,850,343 km (0.107 R)
- M39: 16,249,470 km (0.077 R)
- M40: 17,937,981 km (0.086 R)
- M41: 18,294,324 km (0.103 R)
- M42: 19,681,694 km (0.07 R)
- M43: 19,865,101 km (0.096 R)
- M44: 20,542,630 km (0.1 R)
- M45: 20,853,195 km (0.057 R)
- M46: 21,165,107 km (0.04 R)
- M47: 22,110,565 km (0.105 R)
- M48: 22,428,610 km (0.115 R)
- M49: 24,435,017 km (0.093 R)
- M50: 25,160,567 km (0.114 R)
- M51: 26,161,526 km (0.114 R)
- M52: 27,447,918 km (0.104 R)
- M53: 27,584,501 km (0.103 R)
- M54: 28,478,049 km (0.06 R)
- M55: 29,311,160 km (0.1 R)
- M56: 30,505,100 km (0.041 R)
- M57: 30,859,348 km (0.116 R)
- M58: 31,143,734 km (0.095 R)
- M59: 31,858,363 km (0.098 R)
- M60: 32,506,121 km (0.089 R)
- M61: 33,158,218 km (0.109 R)
- M62: 33,449,485 km (0.047 R)
- M63: 33,522,489 km (0.088 R)
- M64: 33,814,803 km (0.09 R)
- M65: 36,333,284 km (0.057 R)
- M66: 38,528,632 km (0.113 R)
- M67: 38,758,116 km (0.078 R)
- M68: 40,610,885 km (0.065 R)
- M69: 40,922,498 km (0.102 R)
- M70: 41,000,588 km (0.109 R)
- M71: 41,391,487 km (0.059 R)
- M72: 42,571,365 km (0.082 R)
- M73: 43,205,211 km (0.112 R)
- M74: 43,284,798 km (0.106 R)
- M75: 44,964,482 km (0.117 R)
- M76: 45,367,499 km (0.109 R)
- M77: 45,448,282 km (0.112 R)
- M78: 46,583,879 km (0.037 R)
- M79: 46,746,791 km (0.071 R)
- M80: 46,991,683 km (0.074 R)
- M81: 47,237,024 km (0.102 R)
- M82: 47,728,752 km (0.104 R)
- M83: 48,222,275 km (0.072 R)
- M84: 49,713,018 km (0.083 R)
- M85: 50,213,273 km (0.088 R)
- M86: 50,380,374 km (0.111 R)
- M87: 51,555,465 km (0.099 R)
- M88: 52,569,889 km (0.069 R)
- M89: 52,739,533 km (0.065 R)
- M90: 54,360,874 km (0.119 R)
- M91: 54,962,258 km (0.066 R)
- M92: 55,220,763 km (0.11 R)
- M93: 55,652,353 km (0.082 R)
- M94: 55,738,820 km (0.096 R)
- M95: 57,041,070 km (0.059 R)
Planet 3 - Gas Giant
Semi-Major Axis: 12.42 AU
Status: Outer (Cold)
Composition: Hydrogen/Helium Atmosphere
Physical Data
Mass: 186.1
Radius: 12.3
Gravity: 1.23 G
Time & Orbit
Eccentricity (e): 0.119
Orbit Range: 10.94 AU - 13.9 AU
Year: 15602 Days
Day: 7.5 Hours
Environment
Temp: -174 °C
Axial Tilt: 39.1 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (78)
Outer Limit: 82,315,145 km
- M1: 156,629 km (0.071 R)
- M2: 391,198 km (0.03 R)
- M3: 498,460 km (0.115 R)
- M4: 689,646 km (0.038 R)
- M5: 907,161 km (0.05 R)
- M6: 1,094,458 km (0.075 R)
- M7: 1,390,512 km (0.074 R)
- M8: 1,609,224 km (0.071 R)
- M9: 1,969,755 km (0.109 R)
- M10: 2,080,757 km (0.067 R)
- M11: 2,193,853 km (0.107 R)
- M12: 2,309,193 km (0.075 R)
- M13: 2,450,264 km (0.119 R)
- M14: 2,916,410 km (0.068 R)
- M15: 3,043,718 km (0.098 R)
- M16: 3,410,233 km (0.077 R)
- M17: 3,490,717 km (0.037 R)
- M18: 4,014,908 km (0.088 R)
- M19: 4,534,611 km (0.062 R)
- M20: 4,892,898 km (0.073 R)
- M21: 4,984,003 km (0.103 R)
- M22: 5,229,642 km (0.096 R)
- M23: 5,829,081 km (0.117 R)
- M24: 6,153,260 km (0.108 R)
- M25: 6,751,950 km (0.074 R)
- M26: 6,955,703 km (0.113 R)
- M27: 7,508,916 km (0.066 R)
- M28: 7,861,966 km (0.089 R)
- M29: 8,040,586 km (0.108 R)
- M30: 8,584,524 km (0.109 R)
- M31: 8,768,380 km (0.114 R)
- M32: 8,990,982 km (0.059 R)
- M33: 9,555,414 km (0.082 R)
- M34: 10,403,934 km (0.082 R)
- M35: 10,560,862 km (0.088 R)
- M36: 11,156,261 km (0.073 R)
- M37: 12,296,795 km (0.118 R)
- M38: 12,421,261 km (0.102 R)
- M39: 12,671,239 km (0.108 R)
- M40: 12,755,014 km (0.088 R)
- M41: 13,346,374 km (0.105 R)
- M42: 13,516,916 km (0.097 R)
- M43: 13,645,420 km (0.095 R)
- M44: 14,293,628 km (0.108 R)
- M45: 14,424,526 km (0.074 R)
- M46: 15,980,643 km (0.112 R)
- M47: 17,729,741 km (0.111 R)
- M48: 18,152,954 km (0.101 R)
- M49: 18,247,350 km (0.102 R)
- M50: 18,484,313 km (0.032 R)
- M51: 19,781,476 km (0.107 R)
- M52: 20,122,559 km (0.089 R)
- M53: 21,806,732 km (0.068 R)
- M54: 21,907,262 km (0.085 R)
- M55: 22,209,599 km (0.104 R)
- M56: 23,897,213 km (0.027 R)
- M57: 25,308,669 km (0.114 R)
- M58: 25,414,285 km (0.085 R)
- M59: 25,732,031 km (0.119 R)
- M60: 26,478,524 km (0.101 R)
- M61: 27,070,183 km (0.118 R)
- M62: 27,232,198 km (0.067 R)
- M63: 27,611,728 km (0.093 R)
- M64: 28,211,615 km (0.103 R)
- M65: 28,650,535 km (0.048 R)
- M66: 28,760,639 km (0.114 R)
- M67: 28,870,893 km (0.072 R)
- M68: 29,036,498 km (0.108 R)
- M69: 29,479,756 km (0.097 R)
- M70: 31,274,931 km (0.103 R)
- M71: 31,729,260 km (0.12 R)
- M72: 35,737,735 km (0.113 R)
- M73: 37,589,906 km (0.114 R)
- M74: 37,891,645 km (0.077 R)
- M75: 38,558,103 km (0.067 R)
- M76: 39,779,869 km (0.099 R)
- M77: 40,025,808 km (0.071 R)
- M78: 40,828,251 km (0.098 R)
Planet 4 - Ice Giant
Semi-Major Axis: 12.94 AU
Status: Outer (Cold)
Composition: Methane/Ammonia Ices
Physical Data
Mass: 466.7
Radius: 5.9
Gravity: 13.41 G
Time & Orbit
Eccentricity (e): 0.087
Orbit Range: 11.81 AU - 14.07 AU
Year: 16592 Days
Day: 22.7 Hours
Environment
Temp: -192 °C
Axial Tilt: 23.3 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (96)
Outer Limit: 82,315,145 km
- M1: 75,248 km (0.079 R)
- M2: 204,201 km (0.108 R)
- M3: 335,249 km (0.11 R)
- M4: 636,988 km (0.081 R)
- M5: 1,261,858 km (0.077 R)
- M6: 1,384,379 km (0.111 R)
- M7: 1,459,626 km (0.105 R)
- M8: 1,774,829 km (0.095 R)
- M9: 2,082,103 km (0.065 R)
- M10: 2,620,207 km (0.058 R)
- M11: 2,745,420 km (0.034 R)
- M12: 2,937,055 km (0.104 R)
- M13: 3,001,831 km (0.086 R)
- M14: 3,232,511 km (0.075 R)
- M15: 3,366,999 km (0.095 R)
- M16: 4,175,127 km (0.083 R)
- M17: 4,321,583 km (0.062 R)
- M18: 4,395,485 km (0.081 R)
- M19: 4,886,016 km (0.041 R)
- M20: 5,673,948 km (0.054 R)
- M21: 5,795,571 km (0.092 R)
- M22: 6,165,527 km (0.119 R)
- M23: 7,233,057 km (0.06 R)
- M24: 7,945,741 km (0.09 R)
- M25: 8,218,757 km (0.034 R)
- M26: 9,198,324 km (0.07 R)
- M27: 9,726,106 km (0.038 R)
- M28: 9,969,202 km (0.069 R)
- M29: 10,067,039 km (0.109 R)
- M30: 10,214,393 km (0.05 R)
- M31: 10,961,634 km (0.068 R)
- M32: 11,726,379 km (0.089 R)
- M33: 11,829,751 km (0.096 R)
- M34: 11,881,512 km (0.091 R)
- M35: 12,561,135 km (0.076 R)
- M36: 12,825,923 km (0.091 R)
- M37: 12,985,544 km (0.101 R)
- M38: 14,287,045 km (0.111 R)
- M39: 14,508,002 km (0.106 R)
- M40: 14,563,502 km (0.095 R)
- M41: 15,065,254 km (0.114 R)
- M42: 16,488,977 km (0.095 R)
- M43: 16,546,721 km (0.081 R)
- M44: 16,604,616 km (0.052 R)
- M45: 18,492,840 km (0.071 R)
- M46: 18,552,978 km (0.094 R)
- M47: 19,401,198 km (0.058 R)
- M48: 20,696,865 km (0.105 R)
- M49: 20,821,780 km (0.095 R)
- M50: 20,884,312 km (0.105 R)
- M51: 21,135,038 km (0.116 R)
- M52: 21,639,482 km (0.08 R)
- M53: 22,403,628 km (0.113 R)
- M54: 23,371,227 km (0.118 R)
- M55: 23,631,527 km (0.1 R)
- M56: 24,418,112 km (0.105 R)
- M57: 25,681,167 km (0.096 R)
- M58: 26,151,952 km (0.106 R)
- M59: 26,354,507 km (0.089 R)
- M60: 28,201,143 km (0.061 R)
- M61: 29,035,301 km (0.08 R)
- M62: 29,245,037 km (0.09 R)
- M63: 29,806,927 km (0.065 R)
- M64: 30,089,218 km (0.11 R)
- M65: 30,443,316 km (0.116 R)
- M66: 30,727,552 km (0.111 R)
- M67: 32,234,452 km (0.12 R)
- M68: 32,306,707 km (0.094 R)
- M69: 33,985,794 km (0.073 R)
- M70: 35,767,804 km (0.092 R)
- M71: 38,343,879 km (0.074 R)
- M72: 38,497,217 km (0.088 R)
- M73: 40,509,757 km (0.076 R)
- M74: 40,744,177 km (0.039 R)
- M75: 41,528,818 km (0.104 R)
- M76: 41,607,506 km (0.118 R)
- M77: 43,592,072 km (0.044 R)
- M78: 44,394,515 km (0.084 R)
- M79: 44,797,531 km (0.109 R)
- M80: 45,201,894 km (0.071 R)
- M81: 47,487,899 km (0.039 R)
- M82: 48,065,347 km (0.092 R)
- M83: 49,310,450 km (0.11 R)
- M84: 49,560,727 km (0.061 R)
- M85: 49,811,453 km (0.077 R)
- M86: 50,398,027 km (0.114 R)
- M87: 51,155,590 km (0.086 R)
- M88: 51,409,009 km (0.116 R)
- M89: 51,832,221 km (0.099 R)
- M90: 53,023,320 km (0.056 R)
- M91: 55,086,125 km (0.116 R)
- M92: 55,259,209 km (0.118 R)
- M93: 55,779,660 km (0.104 R)
- M94: 56,737,835 km (0.116 R)
- M95: 58,405,552 km (0.066 R)
- M96: 58,935,577 km (0.104 R)
Planet 5 - Ice Giant
Semi-Major Axis: 16.65 AU
Status: Outer (Cold)
Composition: Methane/Ammonia Ices
Physical Data
Mass: 186.9
Radius: 4.6
Gravity: 8.83 G
Time & Orbit
Eccentricity (e): 0.174
Orbit Range: 13.75 AU - 19.55 AU
Year: 24217 Days
Day: 19.1 Hours
Environment
Temp: -188 °C
Axial Tilt: 23.3 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (78)
Outer Limit: 82,315,145 km
- M1: 985,401 km (0.113 R)
- M2: 1,300,753 km (0.115 R)
- M3: 1,749,248 km (0.091 R)
- M4: 1,962,724 km (0.061 R)
- M5: 2,327,444 km (0.101 R)
- M6: 3,117,620 km (0.04 R)
- M7: 3,409,036 km (0.077 R)
- M8: 3,641,661 km (0.115 R)
- M9: 4,298,695 km (0.054 R)
- M10: 4,695,578 km (0.041 R)
- M11: 4,842,932 km (0.067 R)
- M12: 5,179,677 km (0.094 R)
- M13: 5,447,008 km (0.087 R)
- M14: 6,315,723 km (0.108 R)
- M15: 7,226,774 km (0.094 R)
- M16: 7,482,287 km (0.079 R)
- M17: 7,568,156 km (0.089 R)
- M18: 8,089,954 km (0.106 R)
- M19: 8,134,085 km (0.119 R)
- M20: 8,222,348 km (0.114 R)
- M21: 9,770,835 km (0.086 R)
- M22: 10,578,065 km (0.108 R)
- M23: 10,916,605 km (0.11 R)
- M24: 11,903,503 km (0.087 R)
- M25: 15,794,394 km (0.096 R)
- M26: 16,292,255 km (0.115 R)
- M27: 16,403,556 km (0.061 R)
- M28: 16,515,156 km (0.074 R)
- M29: 16,907,551 km (0.116 R)
- M30: 17,644,770 km (0.097 R)
- M31: 19,444,282 km (0.104 R)
- M32: 19,977,599 km (0.098 R)
- M33: 21,912,348 km (0.046 R)
- M34: 22,777,323 km (0.038 R)
- M35: 22,839,556 km (0.114 R)
- M36: 23,026,553 km (0.117 R)
- M37: 24,222,738 km (0.053 R)
- M38: 24,477,054 km (0.107 R)
- M39: 24,732,268 km (0.026 R)
- M40: 25,503,295 km (0.104 R)
- M41: 25,567,922 km (0.067 R)
- M42: 25,762,100 km (0.091 R)
- M43: 25,956,727 km (0.111 R)
- M44: 26,937,341 km (0.086 R)
- M45: 27,068,987 km (0.116 R)
- M46: 27,597,815 km (0.119 R)
- M47: 29,339,733 km (0.119 R)
- M48: 30,360,738 km (0.074 R)
- M49: 31,255,034 km (0.087 R)
- M50: 34,416,636 km (0.117 R)
- M51: 34,774,175 km (0.09 R)
- M52: 35,348,930 km (0.092 R)
- M53: 35,999,082 km (0.111 R)
- M54: 36,653,124 km (0.114 R)
- M55: 37,018,292 km (0.085 R)
- M56: 37,605,015 km (0.109 R)
- M57: 39,383,435 km (0.058 R)
- M58: 40,132,471 km (0.101 R)
- M59: 41,188,931 km (0.1 R)
- M60: 41,720,752 km (0.104 R)
- M61: 42,560,893 km (0.083 R)
- M62: 43,715,490 km (0.051 R)
- M63: 44,102,649 km (0.049 R)
- M64: 44,724,378 km (0.1 R)
- M65: 45,114,529 km (0.105 R)
- M66: 47,240,464 km (0.09 R)
- M67: 48,036,175 km (0.049 R)
- M68: 48,756,040 km (0.102 R)
- M69: 49,157,561 km (0.117 R)
- M70: 49,237,895 km (0.108 R)
- M71: 49,398,862 km (0.098 R)
- M72: 49,560,129 km (0.029 R)
- M73: 50,044,676 km (0.118 R)
- M74: 50,287,474 km (0.11 R)
- M75: 52,572,881 km (0.067 R)
- M76: 53,149,580 km (0.101 R)
- M77: 54,725,295 km (0.119 R)
- M78: 55,812,123 km (0.116 R)
Planet 6 - Ice Giant
Semi-Major Axis: 20.35 AU
Status: Outer (Cold)
Composition: Methane/Ammonia Ices
Physical Data
Mass: 324
Radius: 7.4
Gravity: 5.92 G
Time & Orbit
Eccentricity (e): 0.093
Orbit Range: 18.46 AU - 22.24 AU
Year: 32722 Days
Day: 18.1 Hours
Environment
Temp: -192 °C
Axial Tilt: 27.8 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (77)
Outer Limit: 82,315,145 km
- M1: 186,848 km (0.086 R)
- M2: 243,097 km (0.107 R)
- M3: 342,280 km (0.113 R)
- M4: 519,254 km (0.077 R)
- M5: 929,900 km (0.099 R)
- M6: 1,152,652 km (0.118 R)
- M7: 1,240,615 km (0.12 R)
- M8: 1,486,105 km (0.062 R)
- M9: 1,582,297 km (0.098 R)
- M10: 1,647,521 km (0.118 R)
- M11: 1,713,793 km (0.102 R)
- M12: 4,125,311 km (0.108 R)
- M13: 5,354,257 km (0.035 R)
- M14: 5,957,286 km (0.084 R)
- M15: 6,581,708 km (0.032 R)
- M16: 7,063,563 km (0.111 R)
- M17: 8,461,106 km (0.092 R)
- M18: 11,245,272 km (0.101 R)
- M19: 11,627,644 km (0.088 R)
- M20: 14,009,990 km (0.089 R)
- M21: 14,628,577 km (0.055 R)
- M22: 15,185,829 km (0.046 R)
- M23: 15,608,294 km (0.117 R)
- M24: 16,249,321 km (0.11 R)
- M25: 16,321,128 km (0.061 R)
- M26: 18,672,357 km (0.067 R)
- M27: 20,504,183 km (0.075 R)
- M28: 21,049,168 km (0.029 R)
- M29: 23,034,332 km (0.04 R)
- M30: 23,600,710 km (0.061 R)
- M31: 24,500,092 km (0.034 R)
- M32: 25,078,288 km (0.093 R)
- M33: 25,244,341 km (0.102 R)
- M34: 27,179,689 km (0.074 R)
- M35: 28,035,987 km (0.072 R)
- M36: 28,901,112 km (0.107 R)
- M37: 29,249,525 km (0.109 R)
- M38: 29,336,890 km (0.117 R)
- M39: 29,862,727 km (0.1 R)
- M40: 30,038,804 km (0.049 R)
- M41: 31,369,626 km (0.057 R)
- M42: 31,638,005 km (0.037 R)
- M43: 32,448,077 km (0.114 R)
- M44: 34,641,182 km (0.082 R)
- M45: 37,165,197 km (0.111 R)
- M46: 39,457,934 km (0.083 R)
- M47: 41,305,318 km (0.097 R)
- M48: 42,288,924 km (0.107 R)
- M49: 42,486,543 km (0.054 R)
- M50: 45,184,690 km (0.088 R)
- M51: 45,386,797 km (0.119 R)
- M52: 47,321,247 km (0.052 R)
- M53: 47,731,893 km (0.074 R)
- M54: 47,937,740 km (0.071 R)
- M55: 48,246,959 km (0.114 R)
- M56: 52,326,942 km (0.072 R)
- M57: 54,246,881 km (0.084 R)
- M58: 56,515,981 km (0.046 R)
- M59: 57,279,230 km (0.11 R)
- M60: 59,146,809 km (0.086 R)
- M61: 63,167,402 km (0.054 R)
- M62: 64,413,402 km (0.079 R)
- M63: 65,324,753 km (0.096 R)
- M64: 66,010,958 km (0.064 R)
- M65: 66,929,639 km (0.088 R)
- M66: 67,044,829 km (0.083 R)
- M67: 67,852,657 km (0.053 R)
- M68: 69,594,425 km (0.106 R)
- M69: 71,704,055 km (0.059 R)
- M70: 73,240,724 km (0.082 R)
- M71: 73,359,355 km (0.112 R)
- M72: 74,788,164 km (0.092 R)
- M73: 75,386,257 km (0.068 R)
- M74: 75,985,845 km (0.084 R)
- M75: 77,673,309 km (0.098 R)
- M76: 78,643,002 km (0.12 R)
- M77: 80,472,135 km (0.106 R)
Kuiper Belt
Range: 30.8 - 57.8 AU
Composition
Type: Dwarf Planets/TNOs (Ices)
Reservoir of dwarf planets and volatile ices.
Outer System
Oort Cloud
Range: 222 - 14,608 AU
Composition
Type: Cometary Reservoir
System's final boundary, containing trillions of icy planetesimals.