Star System Generated (Seed: 1766126400)
Star Details
Spectral Class: K2V
Temperature: 4,879 K
Mass: 0.74 sol
Luminosity: 0.35 lux
Habitable Zone (HZ)
Inner Boundary: 0.56 AU
Outer Boundary: 0.81 AU
Physical Limits
Snow Line: 2.84 AU
Max System Radius: 17.2 AU
Planetary System (6 Planets)
Asteroid Belt
Center: 0.48 AU
Composition
Type: Inner System (Rocky)
A dense region of planetesimals and debris.
Boundary
Planet 1 - Terrestrial
Semi-Major Axis: 0.96 AU
Status: Outer (Cold)
Composition: Rocky (Silicates/Metals)
Physical Data
Mass: 3.66
Radius: 1.68
Gravity: 1.3 G
Time & Orbit
Eccentricity (e): 0.099
Orbit Range: 0.86 AU - 1.06 AU
Year: 399 Days
Day: 30 Hours
Environment
Temp: -53 °C
Axial Tilt: 14.5 °
Atmosphere: Thin Nâ‚‚/CHâ‚„
Biome: Ice Cap/Desert
Planet 2 - Gas Giant
Semi-Major Axis: 6.36 AU
Status: Outer (Cold)
Composition: Hydrogen/Helium Atmosphere
Physical Data
Mass: 793.3
Radius: 12.4
Gravity: 5.16 G
Time & Orbit
Eccentricity (e): 0.229
Orbit Range: 4.9 AU - 7.82 AU
Year: 6810 Days
Day: 14.6 Hours
Environment
Temp: -173 °C
Axial Tilt: 28 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (82)
Outer Limit: 60,603,554 km
- M1: 172,187 km (0.046 R)
- M2: 397,482 km (0.11 R)
- M3: 500,255 km (0.077 R)
- M4: 588,069 km (0.047 R)
- M5: 696,378 km (0.109 R)
- M6: 1,589,477 km (0.114 R)
- M7: 1,952,252 km (0.063 R)
- M8: 2,568,446 km (0.078 R)
- M9: 2,661,346 km (0.12 R)
- M10: 2,898,459 km (0.105 R)
- M11: 3,267,367 km (0.073 R)
- M12: 3,419,209 km (0.09 R)
- M13: 3,521,833 km (0.076 R)
- M14: 3,651,534 km (0.11 R)
- M15: 4,213,574 km (0.087 R)
- M16: 4,351,503 km (0.061 R)
- M17: 4,547,177 km (0.099 R)
- M18: 4,947,202 km (0.074 R)
- M19: 5,538,562 km (0.108 R)
- M20: 5,781,509 km (0.118 R)
- M21: 5,965,963 km (0.112 R)
- M22: 6,059,013 km (0.095 R)
- M23: 6,215,044 km (0.099 R)
- M24: 7,113,678 km (0.114 R)
- M25: 7,611,839 km (0.055 R)
- M26: 7,848,203 km (0.107 R)
- M27: 8,018,595 km (0.116 R)
- M28: 8,190,184 km (0.094 R)
- M29: 8,328,263 km (0.062 R)
- M30: 8,536,952 km (0.109 R)
- M31: 9,679,132 km (0.108 R)
- M32: 10,193,898 km (0.092 R)
- M33: 10,417,397 km (0.079 R)
- M34: 11,327,102 km (0.06 R)
- M35: 12,222,744 km (0.082 R)
- M36: 12,779,099 km (0.076 R)
- M37: 12,859,134 km (0.106 R)
- M38: 13,221,909 km (0.075 R)
- M39: 13,834,213 km (0.119 R)
- M40: 13,957,631 km (0.106 R)
- M41: 14,164,375 km (0.111 R)
- M42: 14,706,667 km (0.12 R)
- M43: 15,255,841 km (0.096 R)
- M44: 15,682,794 km (0.12 R)
- M45: 16,504,983 km (0.088 R)
- M46: 16,592,349 km (0.106 R)
- M47: 16,723,696 km (0.075 R)
- M48: 17,385,517 km (0.047 R)
- M49: 18,416,994 km (0.104 R)
- M50: 19,100,357 km (0.081 R)
- M51: 22,446,263 km (0.1 R)
- M52: 23,029,545 km (0.081 R)
- M53: 23,421,043 km (0.067 R)
- M54: 23,519,328 km (0.076 R)
- M55: 24,459,401 km (0.097 R)
- M56: 25,260,648 km (0.053 R)
- M57: 25,664,562 km (0.058 R)
- M58: 26,274,323 km (0.093 R)
- M59: 26,478,674 km (0.085 R)
- M60: 26,991,794 km (0.108 R)
- M61: 27,715,698 km (0.055 R)
- M62: 27,975,849 km (0.082 R)
- M63: 28,550,903 km (0.112 R)
- M64: 28,813,597 km (0.069 R)
- M65: 29,288,421 km (0.064 R)
- M66: 29,606,466 km (0.095 R)
- M67: 30,085,628 km (0.111 R)
- M68: 30,728,599 km (0.082 R)
- M69: 30,890,016 km (0.049 R)
- M70: 31,213,745 km (0.079 R)
- M71: 31,430,213 km (0.112 R)
- M72: 31,647,130 km (0.089 R)
- M73: 32,904,201 km (0.077 R)
- M74: 33,069,357 km (0.07 R)
- M75: 33,290,014 km (0.108 R)
- M76: 34,792,276 km (0.064 R)
- M77: 35,636,307 km (0.119 R)
- M78: 36,373,376 km (0.082 R)
- M79: 36,601,213 km (0.107 R)
- M80: 37,287,419 km (0.061 R)
- M81: 37,459,606 km (0.065 R)
- M82: 38,730,739 km (0.042 R)
Planet 3 - Gas Giant
Semi-Major Axis: 6.36 AU
Status: Outer (Cold)
Composition: Hydrogen/Helium Atmosphere
Physical Data
Mass: 982.5
Radius: 13.3
Gravity: 5.55 G
Time & Orbit
Eccentricity (e): 0.219
Orbit Range: 4.97 AU - 7.75 AU
Year: 6810 Days
Day: 9.7 Hours
Environment
Temp: -179 °C
Axial Tilt: 19.2 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (82)
Outer Limit: 60,603,554 km
- M1: 292,165 km (0.104 R)
- M2: 461,958 km (0.074 R)
- M3: 550,071 km (0.102 R)
- M4: 645,365 km (0.119 R)
- M5: 1,385,725 km (0.096 R)
- M6: 1,706,762 km (0.067 R)
- M7: 2,186,971 km (0.056 R)
- M8: 2,302,012 km (0.049 R)
- M9: 2,490,505 km (0.073 R)
- M10: 3,060,922 km (0.094 R)
- M11: 3,671,730 km (0.112 R)
- M12: 4,147,601 km (0.079 R)
- M13: 4,436,774 km (0.101 R)
- M14: 4,524,887 km (0.092 R)
- M15: 4,643,219 km (0.112 R)
- M16: 4,852,805 km (0.053 R)
- M17: 5,065,683 km (0.058 R)
- M18: 5,281,553 km (0.042 R)
- M19: 5,690,703 km (0.116 R)
- M20: 5,915,399 km (0.113 R)
- M21: 6,012,638 km (0.078 R)
- M22: 6,741,628 km (0.12 R)
- M23: 6,843,205 km (0.039 R)
- M24: 7,013,747 km (0.084 R)
- M25: 7,151,077 km (0.092 R)
- M26: 9,167,657 km (0.098 R)
- M27: 9,318,152 km (0.1 R)
- M28: 9,697,981 km (0.097 R)
- M29: 10,121,493 km (0.091 R)
- M30: 10,394,359 km (0.064 R)
- M31: 10,867,537 km (0.112 R)
- M32: 10,987,066 km (0.117 R)
- M33: 11,227,171 km (0.098 R)
- M34: 12,704,599 km (0.045 R)
- M35: 13,508,837 km (0.109 R)
- M36: 13,594,557 km (0.069 R)
- M37: 13,723,361 km (0.104 R)
- M38: 14,155,549 km (0.072 R)
- M39: 14,636,207 km (0.071 R)
- M40: 16,064,717 km (0.087 R)
- M41: 16,383,211 km (0.091 R)
- M42: 16,611,946 km (0.116 R)
- M43: 16,933,881 km (0.095 R)
- M44: 17,165,308 km (0.056 R)
- M45: 17,444,159 km (0.071 R)
- M46: 18,527,397 km (0.107 R)
- M47: 19,632,177 km (0.082 R)
- M48: 20,070,350 km (0.046 R)
- M49: 20,266,173 km (0.059 R)
- M50: 20,708,983 km (0.083 R)
- M51: 21,554,211 km (0.11 R)
- M52: 22,056,710 km (0.119 R)
- M53: 22,258,817 km (0.091 R)
- M54: 23,022,065 km (0.056 R)
- M55: 23,381,250 km (0.056 R)
- M56: 23,484,173 km (0.118 R)
- M57: 24,417,514 km (0.083 R)
- M58: 24,783,730 km (0.115 R)
- M59: 25,204,548 km (0.041 R)
- M60: 25,362,973 km (0.111 R)
- M61: 26,213,586 km (0.044 R)
- M62: 26,481,217 km (0.055 R)
- M63: 26,749,894 km (0.046 R)
- M64: 28,215,954 km (0.073 R)
- M65: 29,041,883 km (0.093 R)
- M66: 29,207,937 km (0.118 R)
- M67: 29,931,392 km (0.114 R)
- M68: 31,339,258 km (0.11 R)
- M69: 32,137,213 km (0.042 R)
- M70: 32,251,655 km (0.058 R)
- M71: 33,288,518 km (0.071 R)
- M72: 33,985,794 km (0.096 R)
- M73: 35,572,429 km (0.087 R)
- M74: 36,882,906 km (0.051 R)
- M75: 37,303,276 km (0.085 R)
- M76: 39,858,408 km (0.085 R)
- M77: 40,104,646 km (0.052 R)
- M78: 40,228,064 km (0.112 R)
- M79: 40,598,768 km (0.11 R)
- M80: 40,908,585 km (0.098 R)
- M81: 41,157,067 km (0.099 R)
- M82: 41,717,909 km (0.116 R)
Planet 4 - Gas Giant
Semi-Major Axis: 7.36 AU
Status: Outer (Cold)
Composition: Hydrogen/Helium Atmosphere
Physical Data
Mass: 248.9
Radius: 9.1
Gravity: 3.01 G
Time & Orbit
Eccentricity (e): 0.085
Orbit Range: 6.73 AU - 7.99 AU
Year: 8478 Days
Day: 7.2 Hours
Environment
Temp: -190 °C
Axial Tilt: 44.7 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (81)
Outer Limit: 60,603,554 km
- M1: 114,143 km (0.046 R)
- M2: 174,880 km (0.084 R)
- M3: 233,821 km (0.107 R)
- M4: 394,938 km (0.106 R)
- M5: 454,478 km (0.099 R)
- M6: 517,758 km (0.042 R)
- M7: 702,960 km (0.071 R)
- M8: 765,343 km (0.036 R)
- M9: 883,076 km (0.072 R)
- M10: 1,078,451 km (0.09 R)
- M11: 1,242,111 km (0.113 R)
- M12: 1,560,455 km (0.075 R)
- M13: 1,922,183 km (0.058 R)
- M14: 2,159,146 km (0.093 R)
- M15: 2,233,945 km (0.047 R)
- M16: 2,483,325 km (0.077 R)
- M17: 3,198,851 km (0.116 R)
- M18: 3,284,571 km (0.117 R)
- M19: 3,371,038 km (0.108 R)
- M20: 3,546,367 km (0.089 R)
- M21: 3,635,228 km (0.062 R)
- M22: 4,635,888 km (0.115 R)
- M23: 4,979,365 km (0.114 R)
- M24: 5,078,997 km (0.073 R)
- M25: 5,229,642 km (0.076 R)
- M26: 5,821,152 km (0.063 R)
- M27: 6,005,457 km (0.099 R)
- M28: 6,218,484 km (0.088 R)
- M29: 6,352,823 km (0.109 R)
- M30: 6,433,905 km (0.115 R)
- M31: 6,624,493 km (0.101 R)
- M32: 6,706,772 km (0.109 R)
- M33: 7,235,600 km (0.101 R)
- M34: 7,433,817 km (0.111 R)
- M35: 7,519,238 km (0.038 R)
- M36: 7,835,637 km (0.072 R)
- M37: 7,980,897 km (0.052 R)
- M38: 8,185,696 km (0.108 R)
- M39: 8,451,681 km (0.097 R)
- M40: 8,660,520 km (0.103 R)
- M41: 8,810,716 km (0.105 R)
- M42: 9,235,873 km (0.103 R)
- M43: 9,450,995 km (0.037 R)
- M44: 9,512,779 km (0.052 R)
- M45: 10,043,403 km (0.072 R)
- M46: 10,264,658 km (0.1 R)
- M47: 10,711,956 km (0.054 R)
- M48: 11,427,781 km (0.107 R)
- M49: 12,058,486 km (0.097 R)
- M50: 12,293,654 km (0.11 R)
- M51: 13,008,432 km (0.117 R)
- M52: 13,180,470 km (0.086 R)
- M53: 13,736,525 km (0.039 R)
- M54: 15,669,180 km (0.111 R)
- M55: 16,146,996 km (0.025 R)
- M56: 16,294,948 km (0.107 R)
- M57: 16,517,849 km (0.115 R)
- M58: 17,079,439 km (0.104 R)
- M59: 17,267,933 km (0.095 R)
- M60: 17,723,458 km (0.085 R)
- M61: 18,452,598 km (0.106 R)
- M62: 18,529,940 km (0.026 R)
- M63: 19,152,417 km (0.109 R)
- M64: 19,269,851 km (0.093 R)
- M65: 20,457,958 km (0.088 R)
- M66: 21,222,552 km (0.116 R)
- M67: 21,465,948 km (0.065 R)
- M68: 21,710,241 km (0.037 R)
- M69: 22,242,810 km (0.064 R)
- M70: 22,366,378 km (0.095 R)
- M71: 22,614,112 km (0.076 R)
- M72: 23,992,806 km (0.099 R)
- M73: 24,458,354 km (0.085 R)
- M74: 25,055,250 km (0.102 R)
- M75: 25,613,848 km (0.102 R)
- M76: 27,578,816 km (0.111 R)
- M77: 27,844,352 km (0.087 R)
- M78: 28,066,505 km (0.072 R)
- M79: 29,140,319 km (0.088 R)
- M80: 30,136,491 km (0.071 R)
- M81: 30,364,478 km (0.043 R)
Planet 5 - Gas Giant
Semi-Major Axis: 8.07 AU
Status: Outer (Cold)
Composition: Hydrogen/Helium Atmosphere
Physical Data
Mass: 926.4
Radius: 11.5
Gravity: 7 G
Time & Orbit
Eccentricity (e): 0.039
Orbit Range: 7.76 AU - 8.38 AU
Year: 9734 Days
Day: 12.4 Hours
Environment
Temp: -189 °C
Axial Tilt: 26.6 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (84)
Outer Limit: 60,603,554 km
- M1: 194,926 km (0.092 R)
- M2: 497,712 km (0.047 R)
- M3: 606,021 km (0.101 R)
- M4: 794,514 km (0.086 R)
- M5: 906,114 km (0.057 R)
- M6: 1,023,399 km (0.072 R)
- M7: 1,188,106 km (0.094 R)
- M8: 1,317,808 km (0.116 R)
- M9: 1,521,560 km (0.045 R)
- M10: 1,663,229 km (0.101 R)
- M11: 2,063,104 km (0.073 R)
- M12: 2,604,798 km (0.056 R)
- M13: 2,921,198 km (0.075 R)
- M14: 3,099,219 km (0.067 R)
- M15: 3,497,000 km (0.108 R)
- M16: 4,341,480 km (0.096 R)
- M17: 4,613,748 km (0.087 R)
- M18: 4,891,701 km (0.054 R)
- M19: 5,139,435 km (0.064 R)
- M20: 5,427,710 km (0.045 R)
- M21: 5,684,270 km (0.085 R)
- M22: 5,832,671 km (0.112 R)
- M23: 6,247,506 km (0.051 R)
- M24: 6,671,915 km (0.083 R)
- M25: 7,105,749 km (0.028 R)
- M26: 7,427,085 km (0.069 R)
- M27: 7,918,066 km (0.089 R)
- M28: 8,000,943 km (0.088 R)
- M29: 8,845,423 km (0.097 R)
- M30: 9,017,760 km (0.113 R)
- M31: 10,075,117 km (0.114 R)
- M32: 11,264,271 km (0.06 R)
- M33: 11,639,163 km (0.062 R)
- M34: 12,018,095 km (0.039 R)
- M35: 12,113,538 km (0.05 R)
- M36: 12,545,876 km (0.092 R)
- M37: 13,130,205 km (0.111 R)
- M38: 13,475,327 km (0.048 R)
- M39: 13,624,028 km (0.055 R)
- M40: 15,038,924 km (0.07 R)
- M41: 15,763,726 km (0.036 R)
- M42: 16,130,390 km (0.107 R)
- M43: 16,818,989 km (0.111 R)
- M44: 17,247,438 km (0.095 R)
- M45: 18,444,370 km (0.112 R)
- M46: 19,499,484 km (0.069 R)
- M47: 23,433,459 km (0.104 R)
- M48: 23,852,034 km (0.06 R)
- M49: 24,757,251 km (0.115 R)
- M50: 26,539,111 km (0.116 R)
- M51: 26,788,192 km (0.052 R)
- M52: 27,288,596 km (0.085 R)
- M53: 28,425,690 km (0.037 R)
- M54: 29,642,668 km (0.079 R)
- M55: 29,965,800 km (0.099 R)
- M56: 30,160,277 km (0.104 R)
- M57: 30,746,102 km (0.12 R)
- M58: 32,592,439 km (0.099 R)
- M59: 33,193,524 km (0.061 R)
- M60: 33,596,391 km (0.056 R)
- M61: 35,155,350 km (0.108 R)
- M62: 37,572,702 km (0.095 R)
- M63: 39,261,064 km (0.085 R)
- M64: 39,544,851 km (0.115 R)
- M65: 40,185,878 km (0.049 R)
- M66: 40,758,538 km (0.082 R)
- M67: 41,261,935 km (0.086 R)
- M68: 41,912,087 km (0.069 R)
- M69: 42,347,417 km (0.074 R)
- M70: 43,149,561 km (0.094 R)
- M71: 43,589,080 km (0.092 R)
- M72: 44,325,101 km (0.083 R)
- M73: 44,842,710 km (0.107 R)
- M74: 45,065,162 km (0.107 R)
- M75: 45,511,113 km (0.092 R)
- M76: 46,257,756 km (0.088 R)
- M77: 47,536,219 km (0.08 R)
- M78: 47,838,706 km (0.074 R)
- M79: 47,990,249 km (0.084 R)
- M80: 49,284,271 km (0.065 R)
- M81: 49,974,066 km (0.114 R)
- M82: 50,589,961 km (0.095 R)
- M83: 50,898,880 km (0.086 R)
- M84: 50,976,073 km (0.081 R)
Planet 6 - Gas Giant
Semi-Major Axis: 9.43 AU
Status: Outer (Cold)
Composition: Hydrogen/Helium Atmosphere
Physical Data
Mass: 915.8
Radius: 8.1
Gravity: 13.96 G
Time & Orbit
Eccentricity (e): 0.229
Orbit Range: 7.27 AU - 11.59 AU
Year: 12295 Days
Day: 7.3 Hours
Environment
Temp: -191 °C
Axial Tilt: 39.1 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (95)
Outer Limit: 60,603,554 km
- M1: 122,072 km (0.053 R)
- M2: 234,869 km (0.115 R)
- M3: 463,454 km (0.08 R)
- M4: 717,172 km (0.086 R)
- M5: 881,131 km (0.112 R)
- M6: 1,057,507 km (0.058 R)
- M7: 1,245,402 km (0.073 R)
- M8: 1,761,665 km (0.075 R)
- M9: 2,159,296 km (0.108 R)
- M10: 2,429,469 km (0.062 R)
- M11: 2,522,071 km (0.095 R)
- M12: 2,647,284 km (0.112 R)
- M13: 2,774,592 km (0.119 R)
- M14: 2,903,994 km (0.062 R)
- M15: 3,441,349 km (0.043 R)
- M16: 4,759,755 km (0.108 R)
- M17: 5,270,632 km (0.077 R)
- M18: 5,350,667 km (0.088 R)
- M19: 5,431,300 km (0.059 R)
- M20: 6,048,392 km (0.099 R)
- M21: 6,301,511 km (0.072 R)
- M22: 6,949,270 km (0.084 R)
- M23: 7,169,927 km (0.093 R)
- M24: 7,437,857 km (0.089 R)
- M25: 8,354,293 km (0.101 R)
- M26: 9,113,053 km (0.075 R)
- M27: 9,500,662 km (0.064 R)
- M28: 10,848,239 km (0.11 R)
- M29: 11,001,577 km (0.084 R)
- M30: 11,207,274 km (0.077 R)
- M31: 11,622,408 km (0.088 R)
- M32: 12,467,935 km (0.049 R)
- M33: 12,574,898 km (0.118 R)
- M34: 12,844,024 km (0.063 R)
- M35: 15,063,758 km (0.109 R)
- M36: 15,235,047 km (0.109 R)
- M37: 16,451,577 km (0.066 R)
- M38: 16,627,953 km (0.112 R)
- M39: 16,804,927 km (0.107 R)
- M40: 18,486,557 km (0.076 R)
- M41: 18,608,778 km (0.092 R)
- M42: 20,980,353 km (0.081 R)
- M43: 21,491,679 km (0.042 R)
- M44: 22,787,944 km (0.114 R)
- M45: 23,050,190 km (0.097 R)
- M46: 25,116,585 km (0.045 R)
- M47: 25,251,971 km (0.117 R)
- M48: 25,387,507 km (0.101 R)
- M49: 26,343,437 km (0.07 R)
- M50: 26,687,662 km (0.099 R)
- M51: 27,729,312 km (0.085 R)
- M52: 28,431,075 km (0.088 R)
- M53: 30,282,947 km (0.059 R)
- M54: 31,660,744 km (0.066 R)
- M55: 31,953,507 km (0.11 R)
- M56: 32,247,018 km (0.103 R)
- M57: 32,689,080 km (0.111 R)
- M58: 33,281,637 km (0.107 R)
- M59: 33,728,336 km (0.059 R)
- M60: 33,877,635 km (0.057 R)
- M61: 34,402,125 km (0.092 R)
- M62: 35,915,307 km (0.118 R)
- M63: 36,373,376 km (0.066 R)
- M64: 36,910,432 km (0.096 R)
- M65: 38,225,398 km (0.098 R)
- M66: 38,771,430 km (0.06 R)
- M67: 40,028,949 km (0.087 R)
- M68: 40,583,210 km (0.084 R)
- M69: 42,503,149 km (0.054 R)
- M70: 42,664,565 km (0.099 R)
- M71: 43,880,945 km (0.101 R)
- M72: 44,207,218 km (0.049 R)
- M73: 44,534,389 km (0.095 R)
- M74: 44,616,368 km (0.081 R)
- M75: 45,685,694 km (0.079 R)
- M76: 46,929,899 km (0.079 R)
- M77: 47,347,277 km (0.118 R)
- M78: 47,765,703 km (0.11 R)
- M79: 48,101,400 km (0.118 R)
- M80: 48,353,622 km (0.039 R)
- M81: 48,943,935 km (0.029 R)
- M82: 49,451,820 km (0.051 R)
- M83: 49,706,436 km (0.117 R)
- M84: 50,643,666 km (0.037 R)
- M85: 51,414,993 km (0.081 R)
- M86: 51,931,255 km (0.077 R)
- M87: 52,362,845 km (0.1 R)
- M88: 53,055,782 km (0.05 R)
- M89: 53,142,549 km (0.063 R)
- M90: 53,229,466 km (0.064 R)
- M91: 53,751,712 km (0.116 R)
- M92: 54,626,111 km (0.099 R)
- M93: 55,681,375 km (0.089 R)
- M94: 57,187,825 km (0.099 R)
- M95: 59,698,227 km (0.102 R)
Kuiper Belt
Range: 30 - 55 AU
Composition
Type: Dwarf Planets/TNOs (Ices)
Reservoir of dwarf planets and volatile ices.
Outer System
Oort Cloud
Range: 431 - 12,974 AU
Composition
Type: Cometary Reservoir
System's final boundary, containing trillions of icy planetesimals.