Star System Generated (Seed: 1767249165)
Star Details
Spectral Class: M3V
Temperature: 3,267 K
Mass: 0.31 sol
Luminosity: 0.02 lux
Habitable Zone (HZ)
Inner Boundary: 0.13 AU
Outer Boundary: 0.19 AU
Physical Limits
Snow Line: 0.68 AU
Max System Radius: 11.1 AU
Planetary System (6 Planets)
Asteroid Belt
Center: 0.7 AU
Composition
Type: Main (Rocky/Icy Mix)
A dense region of planetesimals and debris.
Boundary
Planet 1 - Gas Giant
Semi-Major Axis: 1.4 AU
Status: Outer (Cold)
Composition: Hydrogen/Helium Atmosphere
Physical Data
Mass: 992.7
Radius: 12
Gravity: 6.89 G
Time & Orbit
Eccentricity (e): 0.087
Orbit Range: 1.28 AU - 1.52 AU
Year: 1087 Days
Day: 14.5 Hours
Environment
Temp: -180 °C
Axial Tilt: 21.1 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (56)
Outer Limit: 72,735,531 km
- M1: 165,306 km (0.091 R)
- M2: 254,316 km (0.108 R)
- M3: 600,486 km (0.074 R)
- M4: 822,938 km (0.034 R)
- M5: 922,869 km (0.099 R)
- M6: 1,034,918 km (0.118 R)
- M7: 1,112,410 km (0.086 R)
- M8: 1,306,887 km (0.073 R)
- M9: 1,391,260 km (0.066 R)
- M10: 1,583,942 km (0.092 R)
- M11: 1,674,599 km (0.119 R)
- M12: 1,776,325 km (0.092 R)
- M13: 2,025,406 km (0.091 R)
- M14: 2,164,382 km (0.047 R)
- M15: 2,515,339 km (0.113 R)
- M16: 2,752,152 km (0.11 R)
- M17: 2,906,836 km (0.117 R)
- M18: 3,007,815 km (0.12 R)
- M19: 3,236,400 km (0.034 R)
- M20: 3,518,392 km (0.113 R)
- M21: 3,796,196 km (0.071 R)
- M22: 3,894,481 km (0.087 R)
- M23: 4,270,870 km (0.079 R)
- M24: 4,386,210 km (0.067 R)
- M25: 4,476,567 km (0.051 R)
- M26: 4,659,226 km (0.081 R)
- M27: 4,924,463 km (0.071 R)
- M28: 5,018,560 km (0.1 R)
- M29: 5,304,292 km (0.103 R)
- M30: 5,414,545 km (0.077 R)
- M31: 5,623,384 km (0.068 R)
- M32: 5,735,732 km (0.102 R)
- M33: 5,820,704 km (0.103 R)
- M34: 6,020,267 km (0.078 R)
- M35: 6,135,457 km (0.098 R)
- M36: 6,411,765 km (0.041 R)
- M37: 6,856,519 km (0.114 R)
- M38: 6,991,905 km (0.1 R)
- M39: 7,128,189 km (0.117 R)
- M40: 7,496,050 km (0.098 R)
- M41: 7,666,741 km (0.078 R)
- M42: 7,885,753 km (0.036 R)
- M43: 8,202,451 km (0.056 R)
- M44: 8,458,712 km (0.064 R)
- M45: 8,782,891 km (0.055 R)
- M46: 9,012,225 km (0.088 R)
- M47: 9,094,653 km (0.078 R)
- M48: 9,594,310 km (0.066 R)
- M49: 9,796,716 km (0.086 R)
- M50: 10,274,531 km (0.11 R)
- M51: 10,360,550 km (0.079 R)
- M52: 11,093,580 km (0.112 R)
- M53: 11,306,009 km (0.039 R)
- M54: 11,484,180 km (0.118 R)
- M55: 11,573,639 km (0.048 R)
- M56: 12,060,431 km (0.107 R)
Planet 2 - Gas Giant
Semi-Major Axis: 1.72 AU
Status: Outer (Cold)
Composition: Hydrogen/Helium Atmosphere
Physical Data
Mass: 718.6
Radius: 15
Gravity: 3.19 G
Time & Orbit
Eccentricity (e): 0.054
Orbit Range: 1.63 AU - 1.81 AU
Year: 1480 Days
Day: 6.9 Hours
Environment
Temp: -192 °C
Axial Tilt: 35.9 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (58)
Outer Limit: 72,735,531 km
- M1: 188,793 km (0.077 R)
- M2: 298,149 km (0.05 R)
- M3: 394,041 km (0.066 R)
- M4: 579,991 km (0.03 R)
- M5: 724,353 km (0.089 R)
- M6: 943,963 km (0.075 R)
- M7: 1,054,815 km (0.073 R)
- M8: 1,264,551 km (0.074 R)
- M9: 1,406,669 km (0.117 R)
- M10: 1,517,072 km (0.103 R)
- M11: 1,688,362 km (0.099 R)
- M12: 1,796,371 km (0.117 R)
- M13: 1,988,904 km (0.091 R)
- M14: 2,124,589 km (0.092 R)
- M15: 2,242,173 km (0.114 R)
- M16: 2,528,653 km (0.081 R)
- M17: 2,630,679 km (0.03 R)
- M18: 2,827,400 km (0.091 R)
- M19: 3,041,175 km (0.062 R)
- M20: 3,211,268 km (0.082 R)
- M21: 3,624,756 km (0.064 R)
- M22: 3,792,456 km (0.037 R)
- M23: 4,122,319 km (0.108 R)
- M24: 4,297,648 km (0.095 R)
- M25: 4,420,617 km (0.065 R)
- M26: 4,669,847 km (0.111 R)
- M27: 4,867,017 km (0.119 R)
- M28: 5,081,391 km (0.119 R)
- M29: 5,416,191 km (0.092 R)
- M30: 5,534,373 km (0.075 R)
- M31: 5,698,332 km (0.075 R)
- M32: 6,169,117 km (0.119 R)
- M33: 6,906,934 km (0.086 R)
- M34: 7,213,161 km (0.06 R)
- M35: 7,524,025 km (0.114 R)
- M36: 7,689,331 km (0.104 R)
- M37: 7,923,002 km (0.115 R)
- M38: 8,345,916 km (0.115 R)
- M39: 8,517,205 km (0.099 R)
- M40: 8,672,488 km (0.118 R)
- M41: 8,793,812 km (0.082 R)
- M42: 9,090,913 km (0.043 R)
- M43: 9,249,487 km (0.11 R)
- M44: 9,893,356 km (0.07 R)
- M45: 10,056,567 km (0.112 R)
- M46: 10,238,927 km (0.084 R)
- M47: 10,459,434 km (0.09 R)
- M48: 10,570,137 km (0.071 R)
- M49: 10,737,088 km (0.047 R)
- M50: 11,073,534 km (0.11 R)
- M51: 11,375,572 km (0.038 R)
- M52: 11,699,601 km (0.118 R)
- M53: 11,872,386 km (0.061 R)
- M54: 12,591,503 km (0.119 R)
- M55: 13,025,786 km (0.114 R)
- M56: 13,125,119 km (0.115 R)
- M57: 13,244,797 km (0.095 R)
- M58: 13,545,339 km (0.075 R)
Planet 3 - Gas Giant
Semi-Major Axis: 1.96 AU
Status: Outer (Cold)
Composition: Hydrogen/Helium Atmosphere
Physical Data
Mass: 772.7
Radius: 10.5
Gravity: 7.01 G
Time & Orbit
Eccentricity (e): 0.073
Orbit Range: 1.82 AU - 2.1 AU
Year: 1800 Days
Day: 9.1 Hours
Environment
Temp: -198 °C
Axial Tilt: 40 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (65)
Outer Limit: 72,735,531 km
- M1: 189,241 km (0.073 R)
- M2: 266,434 km (0.099 R)
- M3: 334,052 km (0.107 R)
- M4: 578,046 km (0.054 R)
- M5: 659,727 km (0.116 R)
- M6: 844,630 km (0.075 R)
- M7: 1,001,707 km (0.04 R)
- M8: 1,216,979 km (0.103 R)
- M9: 1,295,518 km (0.054 R)
- M10: 1,426,864 km (0.103 R)
- M11: 1,659,788 km (0.09 R)
- M12: 2,079,111 km (0.097 R)
- M13: 2,722,980 km (0.12 R)
- M14: 3,067,205 km (0.03 R)
- M15: 3,162,349 km (0.117 R)
- M16: 3,258,391 km (0.047 R)
- M17: 3,327,655 km (0.05 R)
- M18: 3,411,430 km (0.117 R)
- M19: 3,481,741 km (0.097 R)
- M20: 3,666,943 km (0.117 R)
- M21: 3,797,093 km (0.118 R)
- M22: 3,928,889 km (0.118 R)
- M23: 4,212,078 km (0.1 R)
- M24: 4,409,547 km (0.094 R)
- M25: 4,486,440 km (0.114 R)
- M26: 4,893,197 km (0.119 R)
- M27: 5,246,697 km (0.068 R)
- M28: 5,525,547 km (0.058 R)
- M29: 5,708,505 km (0.09 R)
- M30: 5,859,898 km (0.085 R)
- M31: 5,978,380 km (0.037 R)
- M32: 6,046,596 km (0.06 R)
- M33: 6,408,474 km (0.045 R)
- M34: 6,706,772 km (0.069 R)
- M35: 7,063,413 km (0.113 R)
- M36: 7,189,823 km (0.099 R)
- M37: 7,647,144 km (0.081 R)
- M38: 7,758,295 km (0.109 R)
- M39: 7,982,243 km (0.062 R)
- M40: 8,113,889 km (0.075 R)
- M41: 8,417,573 km (0.08 R)
- M42: 8,628,506 km (0.072 R)
- M43: 8,724,847 km (0.111 R)
- M44: 8,938,323 km (0.065 R)
- M45: 9,094,803 km (0.072 R)
- M46: 9,350,765 km (0.082 R)
- M47: 10,011,389 km (0.069 R)
- M48: 10,316,568 km (0.049 R)
- M49: 10,624,890 km (0.087 R)
- M50: 10,873,820 km (0.107 R)
- M51: 10,978,090 km (0.061 R)
- M52: 11,483,133 km (0.064 R)
- M53: 11,760,038 km (0.072 R)
- M54: 11,909,935 km (0.105 R)
- M55: 11,995,954 km (0.108 R)
- M56: 12,298,441 km (0.106 R)
- M57: 12,494,414 km (0.039 R)
- M58: 12,625,462 km (0.115 R)
- M59: 13,646,168 km (0.056 R)
- M60: 14,098,103 km (0.086 R)
- M61: 14,257,425 km (0.075 R)
- M62: 14,440,383 km (0.103 R)
- M63: 14,601,051 km (0.12 R)
- M64: 15,553,840 km (0.093 R)
- M65: 15,624,450 km (0.116 R)
Planet 4 - Gas Giant
Semi-Major Axis: 3.28 AU
Status: Outer (Cold)
Composition: Hydrogen/Helium Atmosphere
Physical Data
Mass: 970.6
Radius: 15
Gravity: 4.31 G
Time & Orbit
Eccentricity (e): 0.068
Orbit Range: 3.06 AU - 3.5 AU
Year: 3897 Days
Day: 9.5 Hours
Environment
Temp: -201 °C
Axial Tilt: 8.8 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (70)
Outer Limit: 72,735,531 km
- M1: 191,186 km (0.1 R)
- M2: 306,227 km (0.089 R)
- M3: 414,835 km (0.065 R)
- M4: 844,330 km (0.102 R)
- M5: 1,035,367 km (0.097 R)
- M6: 1,555,070 km (0.057 R)
- M7: 1,665,323 km (0.077 R)
- M8: 1,827,787 km (0.114 R)
- M9: 1,944,772 km (0.067 R)
- M10: 2,275,683 km (0.098 R)
- M11: 2,457,295 km (0.033 R)
- M12: 2,606,145 km (0.105 R)
- M13: 2,796,583 km (0.103 R)
- M14: 2,913,119 km (0.05 R)
- M15: 3,051,198 km (0.096 R)
- M16: 3,774,953 km (0.113 R)
- M17: 4,505,439 km (0.112 R)
- M18: 4,782,046 km (0.092 R)
- M19: 5,040,700 km (0.095 R)
- M20: 5,449,402 km (0.062 R)
- M21: 5,769,242 km (0.087 R)
- M22: 6,273,536 km (0.096 R)
- M23: 6,792,192 km (0.074 R)
- M24: 7,110,088 km (0.119 R)
- M25: 7,324,761 km (0.116 R)
- M26: 7,870,793 km (0.098 R)
- M27: 8,232,969 km (0.073 R)
- M28: 8,543,684 km (0.105 R)
- M29: 8,686,251 km (0.038 R)
- M30: 8,829,566 km (0.037 R)
- M31: 9,031,523 km (0.091 R)
- M32: 9,440,224 km (0.118 R)
- M33: 9,646,819 km (0.082 R)
- M34: 10,427,420 km (0.116 R)
- M35: 10,549,343 km (0.095 R)
- M36: 11,510,359 km (0.092 R)
- M37: 12,305,771 km (0.099 R)
- M38: 13,415,937 km (0.066 R)
- M39: 14,388,174 km (0.107 R)
- M40: 14,762,916 km (0.101 R)
- M41: 14,865,690 km (0.105 R)
- M42: 15,037,578 km (0.106 R)
- M43: 15,383,149 km (0.047 R)
- M44: 15,871,586 km (0.107 R)
- M45: 16,047,214 km (0.115 R)
- M46: 16,400,415 km (0.079 R)
- M47: 16,791,912 km (0.107 R)
- M48: 16,899,323 km (0.09 R)
- M49: 17,511,777 km (0.112 R)
- M50: 17,948,603 km (0.102 R)
- M51: 18,094,910 km (0.103 R)
- M52: 18,315,267 km (0.092 R)
- M53: 18,499,572 km (0.086 R)
- M54: 18,907,226 km (0.114 R)
- M55: 20,567,314 km (0.102 R)
- M56: 20,720,502 km (0.096 R)
- M57: 21,259,952 km (0.091 R)
- M58: 21,453,681 km (0.079 R)
- M59: 21,648,009 km (0.06 R)
- M60: 22,273,777 km (0.117 R)
- M61: 22,905,528 km (0.119 R)
- M62: 23,703,633 km (0.052 R)
- M63: 23,864,301 km (0.12 R)
- M64: 24,389,090 km (0.117 R)
- M65: 25,286,079 km (0.055 R)
- M66: 25,573,606 km (0.076 R)
- M67: 26,027,786 km (0.098 R)
- M68: 26,152,101 km (0.072 R)
- M69: 26,318,305 km (0.084 R)
- M70: 27,195,995 km (0.101 R)
Planet 5 - Gas Giant
Semi-Major Axis: 4.35 AU
Status: Outer (Cold)
Composition: Hydrogen/Helium Atmosphere
Physical Data
Mass: 576.4
Radius: 13.4
Gravity: 3.21 G
Time & Orbit
Eccentricity (e): 0.202
Orbit Range: 3.47 AU - 5.23 AU
Year: 5952 Days
Day: 8 Hours
Environment
Temp: -209 °C
Axial Tilt: 136.6 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (78)
Outer Limit: 72,735,531 km
- M1: 167,699 km (0.112 R)
- M2: 277,803 km (0.117 R)
- M3: 366,365 km (0.083 R)
- M4: 480,957 km (0.114 R)
- M5: 577,448 km (0.095 R)
- M6: 719,117 km (0.084 R)
- M7: 807,829 km (0.051 R)
- M8: 900,878 km (0.107 R)
- M9: 1,084,585 km (0.119 R)
- M10: 1,204,263 km (0.118 R)
- M11: 1,507,348 km (0.067 R)
- M12: 1,711,549 km (0.101 R)
- M13: 1,835,117 km (0.032 R)
- M14: 2,054,278 km (0.105 R)
- M15: 2,167,075 km (0.104 R)
- M16: 2,599,113 km (0.104 R)
- M17: 2,701,139 km (0.12 R)
- M18: 2,846,399 km (0.06 R)
- M19: 3,188,230 km (0.118 R)
- M20: 3,680,108 km (0.061 R)
- M21: 3,958,659 km (0.086 R)
- M22: 4,585,773 km (0.1 R)
- M23: 4,810,320 km (0.108 R)
- M24: 4,911,298 km (0.113 R)
- M25: 5,089,619 km (0.056 R)
- M26: 6,425,827 km (0.059 R)
- M27: 6,875,518 km (0.084 R)
- M28: 7,018,085 km (0.062 R)
- M29: 7,422,747 km (0.111 R)
- M30: 7,510,412 km (0.079 R)
- M31: 7,746,028 km (0.061 R)
- M32: 8,134,235 km (0.103 R)
- M33: 8,960,763 km (0.074 R)
- M34: 9,116,644 km (0.06 R)
- M35: 9,494,827 km (0.075 R)
- M36: 9,685,864 km (0.049 R)
- M37: 10,397,202 km (0.109 R)
- M38: 12,007,323 km (0.089 R)
- M39: 12,736,015 km (0.075 R)
- M40: 12,841,332 km (0.062 R)
- M41: 13,123,473 km (0.087 R)
- M42: 13,622,233 km (0.105 R)
- M43: 14,455,193 km (0.053 R)
- M44: 14,896,358 km (0.097 R)
- M45: 15,678,904 km (0.119 R)
- M46: 16,094,337 km (0.099 R)
- M47: 16,322,324 km (0.082 R)
- M48: 16,743,293 km (0.074 R)
- M49: 17,129,106 km (0.079 R)
- M50: 17,362,030 km (0.035 R)
- M51: 18,185,416 km (0.11 R)
- M52: 18,741,472 km (0.054 R)
- M53: 19,788,806 km (0.055 R)
- M54: 20,114,930 km (0.103 R)
- M55: 20,237,750 km (0.089 R)
- M56: 21,145,659 km (0.118 R)
- M57: 21,772,325 km (0.066 R)
- M58: 21,898,286 km (0.055 R)
- M59: 22,702,374 km (0.083 R)
- M60: 22,958,336 km (0.105 R)
- M61: 23,645,439 km (0.089 R)
- M62: 23,818,225 km (0.072 R)
- M63: 24,382,957 km (0.088 R)
- M64: 25,304,480 km (0.086 R)
- M65: 25,747,290 km (0.1 R)
- M66: 26,505,900 km (0.114 R)
- M67: 27,226,663 km (0.107 R)
- M68: 27,544,110 km (0.028 R)
- M69: 27,999,635 km (0.093 R)
- M70: 28,549,557 km (0.103 R)
- M71: 28,641,560 km (0.104 R)
- M72: 28,871,940 km (0.115 R)
- M73: 29,242,045 km (0.112 R)
- M74: 29,474,072 km (0.081 R)
- M75: 29,660,171 km (0.064 R)
- M76: 30,220,715 km (0.096 R)
- M77: 31,589,834 km (0.109 R)
- M78: 31,685,128 km (0.074 R)
Planet 6 - Ice Giant
Semi-Major Axis: 9.07 AU
Status: Outer (Cold)
Composition: Methane/Ammonia Ices
Physical Data
Mass: 745.4
Radius: 5.8
Gravity: 22.16 G
Time & Orbit
Eccentricity (e): 0.037
Orbit Range: 8.73 AU - 9.41 AU
Year: 17919 Days
Day: 18.6 Hours
Environment
Temp: -224 °C
Axial Tilt: 15.1 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (97)
Outer Limit: 72,735,531 km
- M1: 97,837 km (0.048 R)
- M2: 134,189 km (0.085 R)
- M3: 376,687 km (0.111 R)
- M4: 675,434 km (0.107 R)
- M5: 742,753 km (0.066 R)
- M6: 860,337 km (0.101 R)
- M7: 1,389,166 km (0.1 R)
- M8: 1,809,685 km (0.112 R)
- M9: 1,969,007 km (0.105 R)
- M10: 2,099,756 km (0.07 R)
- M11: 2,233,496 km (0.065 R)
- M12: 2,544,361 km (0.054 R)
- M13: 3,017,539 km (0.114 R)
- M14: 3,283,374 km (0.115 R)
- M15: 4,722,655 km (0.115 R)
- M16: 5,854,064 km (0.109 R)
- M17: 6,571,386 km (0.037 R)
- M18: 6,669,073 km (0.099 R)
- M19: 7,014,943 km (0.103 R)
- M20: 7,215,255 km (0.055 R)
- M21: 9,649,960 km (0.074 R)
- M22: 10,550,988 km (0.12 R)
- M23: 10,953,706 km (0.116 R)
- M24: 11,596,528 km (0.036 R)
- M25: 12,011,961 km (0.119 R)
- M26: 12,857,339 km (0.086 R)
- M27: 15,247,165 km (0.063 R)
- M28: 15,506,567 km (0.108 R)
- M29: 15,832,840 km (0.104 R)
- M30: 15,898,364 km (0.083 R)
- M31: 16,293,452 km (0.063 R)
- M32: 16,359,724 km (0.112 R)
- M33: 18,592,771 km (0.116 R)
- M34: 18,661,886 km (0.049 R)
- M35: 18,869,827 km (0.055 R)
- M36: 19,008,953 km (0.104 R)
- M37: 19,568,598 km (0.073 R)
- M38: 19,709,370 km (0.114 R)
- M39: 20,847,510 km (0.036 R)
- M40: 21,135,486 km (0.086 R)
- M41: 21,715,178 km (0.067 R)
- M42: 22,520,763 km (0.059 R)
- M43: 22,668,266 km (0.058 R)
- M44: 22,964,320 km (0.049 R)
- M45: 23,336,071 km (0.114 R)
- M46: 24,615,133 km (0.109 R)
- M47: 26,849,078 km (0.109 R)
- M48: 26,927,168 km (0.114 R)
- M49: 27,083,797 km (0.104 R)
- M50: 27,319,264 km (0.102 R)
- M51: 27,871,280 km (0.118 R)
- M52: 28,506,622 km (0.059 R)
- M53: 29,227,235 km (0.049 R)
- M54: 29,388,203 km (0.057 R)
- M55: 29,549,319 km (0.106 R)
- M56: 29,630,102 km (0.088 R)
- M57: 29,872,750 km (0.086 R)
- M58: 33,674,331 km (0.104 R)
- M59: 34,946,511 km (0.114 R)
- M60: 37,887,755 km (0.061 R)
- M61: 38,856,252 km (0.06 R)
- M62: 42,264,091 km (0.114 R)
- M63: 43,176,638 km (0.087 R)
- M64: 44,003,466 km (0.077 R)
- M65: 44,835,529 km (0.109 R)
- M66: 46,421,416 km (0.106 R)
- M67: 47,079,796 km (0.074 R)
- M68: 48,405,682 km (0.071 R)
- M69: 49,743,686 km (0.104 R)
- M70: 51,093,956 km (0.1 R)
- M71: 51,190,895 km (0.079 R)
- M72: 51,287,835 km (0.069 R)
- M73: 52,749,705 km (0.099 R)
- M74: 53,141,801 km (0.1 R)
- M75: 53,928,985 km (0.093 R)
- M76: 54,720,059 km (0.111 R)
- M77: 56,915,108 km (0.092 R)
- M78: 57,619,565 km (0.079 R)
- M79: 59,648,261 km (0.081 R)
- M80: 59,954,488 km (0.071 R)
- M81: 61,287,854 km (0.083 R)
- M82: 63,566,529 km (0.12 R)
- M83: 65,135,960 km (0.045 R)
- M84: 65,451,312 km (0.074 R)
- M85: 66,294,895 km (0.104 R)
- M86: 66,929,938 km (0.084 R)
- M87: 67,567,075 km (0.067 R)
- M88: 68,419,633 km (0.115 R)
- M89: 68,633,259 km (0.105 R)
- M90: 69,383,044 km (0.09 R)
- M91: 69,490,305 km (0.081 R)
- M92: 69,812,689 km (0.08 R)
- M93: 70,135,371 km (0.12 R)
- M94: 70,243,082 km (0.035 R)
- M95: 70,566,512 km (0.049 R)
- M96: 70,674,522 km (0.109 R)
- M97: 72,191,295 km (0.089 R)
Kuiper Belt
Range: 30 - 58 AU
Composition
Type: Dwarf Planets/TNOs (Ices)
Reservoir of dwarf planets and volatile ices.
Outer System
Oort Cloud
Range: 469 - 16,939 AU
Composition
Type: Cometary Reservoir
System's final boundary, containing trillions of icy planetesimals.