Star System Generated (Seed: 1767038941)
Star Details
Spectral Class: M8V
Temperature: 2,617 K
Mass: 0.28 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: 10.6 AU
Planetary System (6 Planets)
Planet 1 - Gas Giant
Semi-Major Axis: 0.5 AU
Status: Outer (Cold)
Composition: Hydrogen/Helium Atmosphere
Physical Data
Mass: 563.7
Radius: 14.4
Gravity: 2.72 G
Time & Orbit
Eccentricity (e): 0.15
Orbit Range: 0.43 AU - 0.58 AU
Year: 244 Days
Day: 10.9 Hours
Environment
Temp: -140 °C
Axial Tilt: 16.7 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (27)
Outer Limit: 59,360,028 km
- M1: 179,368 km (0.074 R)
- M2: 314,006 km (0.116 R)
- M3: 407,355 km (0.095 R)
- M4: 510,727 km (0.111 R)
- M5: 623,674 km (0.104 R)
- M6: 779,555 km (0.058 R)
- M7: 966,402 km (0.074 R)
- M8: 1,083,089 km (0.048 R)
- M9: 1,226,254 km (0.094 R)
- M10: 1,342,790 km (0.05 R)
- M11: 1,432,848 km (0.086 R)
- M12: 1,607,728 km (0.067 R)
- M13: 1,773,483 km (0.079 R)
- M14: 1,902,735 km (0.067 R)
- M15: 2,013,737 km (0.063 R)
- M16: 2,109,330 km (0.1 R)
- M17: 2,206,718 km (0.116 R)
- M18: 2,360,206 km (0.059 R)
- M19: 2,498,733 km (0.057 R)
- M20: 2,721,335 km (0.083 R)
- M21: 2,813,338 km (0.097 R)
- M22: 2,921,048 km (0.054 R)
- M23: 3,045,214 km (0.097 R)
- M24: 3,191,671 km (0.083 R)
- M25: 3,439,105 km (0.026 R)
- M26: 3,634,331 km (0.076 R)
- M27: 3,736,057 km (0.07 R)
Planet 2 - Gas Giant
Semi-Major Axis: 0.94 AU
Status: Outer (Cold)
Composition: Hydrogen/Helium Atmosphere
Physical Data
Mass: 513.4
Radius: 11.4
Gravity: 3.95 G
Time & Orbit
Eccentricity (e): 0.187
Orbit Range: 0.76 AU - 1.12 AU
Year: 629 Days
Day: 7.2 Hours
Environment
Temp: -165 °C
Axial Tilt: 26.3 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (46)
Outer Limit: 59,360,028 km
- M1: 141,968 km (0.116 R)
- M2: 221,704 km (0.09 R)
- M3: 297,251 km (0.04 R)
- M4: 371,302 km (0.087 R)
- M5: 510,428 km (0.077 R)
- M6: 709,244 km (0.109 R)
- M7: 910,153 km (0.042 R)
- M8: 1,046,288 km (0.074 R)
- M9: 1,157,289 km (0.114 R)
- M10: 1,277,865 km (0.047 R)
- M11: 1,362,837 km (0.11 R)
- M12: 1,514,529 km (0.119 R)
- M13: 1,592,619 km (0.114 R)
- M14: 1,678,339 km (0.074 R)
- M15: 1,938,489 km (0.066 R)
- M16: 2,017,178 km (0.062 R)
- M17: 2,117,109 km (0.074 R)
- M18: 2,198,341 km (0.058 R)
- M19: 2,384,889 km (0.058 R)
- M20: 2,540,920 km (0.096 R)
- M21: 2,656,409 km (0.085 R)
- M22: 2,781,324 km (0.112 R)
- M23: 2,870,634 km (0.052 R)
- M24: 3,059,725 km (0.115 R)
- M25: 3,144,398 km (0.052 R)
- M26: 3,253,155 km (0.093 R)
- M27: 3,490,567 km (0.115 R)
- M28: 3,684,745 km (0.106 R)
- M29: 3,758,347 km (0.107 R)
- M30: 3,890,741 km (0.065 R)
- M31: 4,142,963 km (0.046 R)
- M32: 4,314,253 km (0.102 R)
- M33: 4,637,235 km (0.078 R)
- M34: 4,770,526 km (0.099 R)
- M35: 5,022,599 km (0.104 R)
- M36: 5,159,481 km (0.062 R)
- M37: 5,242,209 km (0.091 R)
- M38: 5,334,660 km (0.088 R)
- M39: 5,558,758 km (0.052 R)
- M40: 5,662,579 km (0.094 R)
- M41: 5,757,424 km (0.084 R)
- M42: 5,843,442 km (0.107 R)
- M43: 6,269,497 km (0.086 R)
- M44: 6,535,931 km (0.117 R)
- M45: 6,615,517 km (0.098 R)
- M46: 6,796,082 km (0.107 R)
Planet 3 - Gas Giant
Semi-Major Axis: 1.4 AU
Status: Outer (Cold)
Composition: Hydrogen/Helium Atmosphere
Physical Data
Mass: 924.9
Radius: 8.5
Gravity: 12.8 G
Time & Orbit
Eccentricity (e): 0.248
Orbit Range: 1.05 AU - 1.75 AU
Year: 1143 Days
Day: 14.7 Hours
Environment
Temp: -194 °C
Axial Tilt: 23.2 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (70)
Outer Limit: 59,360,028 km
- M1: 124,017 km (0.083 R)
- M2: 179,966 km (0.071 R)
- M3: 256,710 km (0.093 R)
- M4: 428,747 km (0.072 R)
- M5: 575,802 km (0.044 R)
- M6: 699,220 km (0.117 R)
- M7: 788,979 km (0.067 R)
- M8: 1,090,419 km (0.112 R)
- M9: 1,187,807 km (0.112 R)
- M10: 1,254,378 km (0.093 R)
- M11: 1,560,755 km (0.099 R)
- M12: 1,643,333 km (0.108 R)
- M13: 1,998,478 km (0.048 R)
- M14: 2,241,574 km (0.041 R)
- M15: 2,335,372 km (0.109 R)
- M16: 2,409,124 km (0.101 R)
- M17: 2,580,713 km (0.11 R)
- M18: 2,657,157 km (0.091 R)
- M19: 2,767,561 km (0.068 R)
- M20: 2,845,800 km (0.039 R)
- M21: 3,061,969 km (0.056 R)
- M22: 3,154,570 km (0.086 R)
- M23: 3,486,079 km (0.075 R)
- M24: 3,705,240 km (0.059 R)
- M25: 3,928,889 km (0.112 R)
- M26: 4,029,718 km (0.085 R)
- M27: 4,612,850 km (0.087 R)
- M28: 4,665,958 km (0.112 R)
- M29: 4,759,456 km (0.113 R)
- M30: 4,880,481 km (0.119 R)
- M31: 5,029,929 km (0.096 R)
- M32: 5,098,295 km (0.094 R)
- M33: 5,319,401 km (0.11 R)
- M34: 5,375,201 km (0.089 R)
- M35: 5,459,125 km (0.105 R)
- M36: 5,529,586 km (0.097 R)
- M37: 5,699,679 km (0.076 R)
- M38: 5,914,651 km (0.091 R)
- M39: 6,001,418 km (0.085 R)
- M40: 6,146,977 km (0.073 R)
- M41: 6,590,684 km (0.058 R)
- M42: 6,922,791 km (0.051 R)
- M43: 7,106,198 km (0.05 R)
- M44: 7,368,742 km (0.081 R)
- M45: 7,556,039 km (0.06 R)
- M46: 7,855,833 km (0.115 R)
- M47: 8,015,155 km (0.115 R)
- M48: 8,111,346 km (0.097 R)
- M49: 8,207,837 km (0.091 R)
- M50: 8,467,090 km (0.086 R)
- M51: 8,532,315 km (0.053 R)
- M52: 8,844,525 km (0.103 R)
- M53: 9,027,035 km (0.06 R)
- M54: 9,093,606 km (0.1 R)
- M55: 9,261,006 km (0.056 R)
- M56: 9,345,080 km (0.05 R)
- M57: 9,513,976 km (0.115 R)
- M58: 9,718,027 km (0.114 R)
- M59: 9,820,651 km (0.101 R)
- M60: 9,889,167 km (0.052 R)
- M61: 9,992,390 km (0.096 R)
- M62: 10,182,379 km (0.081 R)
- M63: 10,391,068 km (0.074 R)
- M64: 11,168,528 km (0.067 R)
- M65: 11,455,906 km (0.077 R)
- M66: 11,510,060 km (0.053 R)
- M67: 11,636,620 km (0.034 R)
- M68: 11,763,778 km (0.07 R)
- M69: 12,203,297 km (0.114 R)
- M70: 12,258,498 km (0.031 R)
Planet 4 - Ice Giant
Semi-Major Axis: 7.51 AU
Status: Outer (Cold)
Composition: Methane/Ammonia Ices
Physical Data
Mass: 916.5
Radius: 7.5
Gravity: 16.29 G
Time & Orbit
Eccentricity (e): 0.104
Orbit Range: 6.73 AU - 8.29 AU
Year: 14206 Days
Day: 22.9 Hours
Environment
Temp: -223 °C
Axial Tilt: 22.3 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (92)
Outer Limit: 59,360,028 km
- M1: 372,648 km (0.111 R)
- M2: 548,575 km (0.07 R)
- M3: 860,936 km (0.111 R)
- M4: 1,172,399 km (0.071 R)
- M5: 1,249,142 km (0.103 R)
- M6: 1,354,310 km (0.12 R)
- M7: 1,892,862 km (0.058 R)
- M8: 2,795,087 km (0.033 R)
- M9: 3,253,604 km (0.119 R)
- M10: 4,520,100 km (0.082 R)
- M11: 5,056,707 km (0.108 R)
- M12: 5,788,690 km (0.072 R)
- M13: 6,189,612 km (0.104 R)
- M14: 6,279,819 km (0.117 R)
- M15: 7,207,027 km (0.09 R)
- M16: 7,493,357 km (0.118 R)
- M17: 8,325,122 km (0.086 R)
- M18: 8,424,903 km (0.025 R)
- M19: 9,288,981 km (0.107 R)
- M20: 9,810,479 km (0.116 R)
- M21: 9,968,753 km (0.101 R)
- M22: 10,074,669 km (0.089 R)
- M23: 10,234,439 km (0.05 R)
- M24: 11,265,318 km (0.114 R)
- M25: 11,486,573 km (0.093 R)
- M26: 11,542,074 km (0.111 R)
- M27: 13,599,942 km (0.086 R)
- M28: 13,658,734 km (0.097 R)
- M29: 13,776,468 km (0.095 R)
- M30: 14,550,338 km (0.054 R)
- M31: 15,953,865 km (0.098 R)
- M32: 16,829,012 km (0.09 R)
- M33: 18,365,383 km (0.092 R)
- M34: 19,018,676 km (0.101 R)
- M35: 19,150,323 km (0.117 R)
- M36: 19,216,146 km (0.06 R)
- M37: 20,280,983 km (0.118 R)
- M38: 21,296,454 km (0.056 R)
- M39: 21,844,730 km (0.11 R)
- M40: 23,095,368 km (0.079 R)
- M41: 24,155,269 km (0.115 R)
- M42: 24,440,702 km (0.102 R)
- M43: 26,029,730 km (0.084 R)
- M44: 26,836,811 km (0.104 R)
- M45: 27,503,269 km (0.093 R)
- M46: 27,875,768 km (0.115 R)
- M47: 27,950,567 km (0.073 R)
- M48: 28,025,366 km (0.083 R)
- M49: 29,534,958 km (0.06 R)
- M50: 31,070,879 km (0.069 R)
- M51: 31,926,579 km (0.094 R)
- M52: 32,948,033 km (0.102 R)
- M53: 33,581,880 km (0.097 R)
- M54: 34,540,204 km (0.113 R)
- M55: 35,103,290 km (0.12 R)
- M56: 35,183,923 km (0.113 R)
- M57: 35,913,063 km (0.102 R)
- M58: 36,320,269 km (0.12 R)
- M59: 36,647,140 km (0.077 R)
- M60: 37,386,153 km (0.111 R)
- M61: 37,633,588 km (0.091 R)
- M62: 37,798,744 km (0.078 R)
- M63: 38,047,077 km (0.099 R)
- M64: 40,644,844 km (0.097 R)
- M65: 40,729,516 km (0.094 R)
- M66: 40,899,310 km (0.11 R)
- M67: 41,751,120 km (0.085 R)
- M68: 42,608,914 km (0.11 R)
- M69: 43,212,691 km (0.068 R)
- M70: 43,906,377 km (0.059 R)
- M71: 44,778,532 km (0.086 R)
- M72: 45,568,409 km (0.053 R)
- M73: 45,744,486 km (0.107 R)
- M74: 46,628,609 km (0.051 R)
- M75: 48,773,394 km (0.05 R)
- M76: 50,312,008 km (0.12 R)
- M77: 50,494,068 km (0.05 R)
- M78: 51,682,923 km (0.097 R)
- M79: 52,326,792 km (0.093 R)
- M80: 52,788,301 km (0.081 R)
- M81: 53,436,808 km (0.118 R)
- M82: 53,901,609 km (0.109 R)
- M83: 54,648,102 km (0.118 R)
- M84: 57,763,179 km (0.028 R)
- M85: 57,953,916 km (0.066 R)
- M86: 58,431,432 km (0.107 R)
- M87: 60,838,612 km (0.116 R)
- M88: 61,518,384 km (0.093 R)
- M89: 61,713,011 km (0.108 R)
- M90: 62,983,546 km (0.046 R)
- M91: 64,065,288 km (0.114 R)
- M92: 65,351,680 km (0.103 R)
Planet 5 - Ice Giant
Semi-Major Axis: 7.79 AU
Status: Outer (Cold)
Composition: Methane/Ammonia Ices
Physical Data
Mass: 490
Radius: 7
Gravity: 10 G
Time & Orbit
Eccentricity (e): 0.208
Orbit Range: 6.17 AU - 9.41 AU
Year: 15008 Days
Day: 18.2 Hours
Environment
Temp: -224 °C
Axial Tilt: 39.7 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (96)
Outer Limit: 59,360,028 km
- M1: 143,165 km (0.118 R)
- M2: 335,997 km (0.056 R)
- M3: 393,293 km (0.067 R)
- M4: 502,649 km (0.097 R)
- M5: 714,330 km (0.066 R)
- M6: 1,216,530 km (0.087 R)
- M7: 1,309,281 km (0.119 R)
- M8: 1,502,112 km (0.118 R)
- M9: 1,627,176 km (0.077 R)
- M10: 1,914,703 km (0.101 R)
- M11: 2,106,039 km (0.112 R)
- M12: 2,246,661 km (0.033 R)
- M13: 2,448,468 km (0.116 R)
- M14: 3,477,702 km (0.094 R)
- M15: 3,916,023 km (0.111 R)
- M16: 4,089,258 km (0.073 R)
- M17: 4,660,572 km (0.099 R)
- M18: 4,770,377 km (0.105 R)
- M19: 4,992,829 km (0.095 R)
- M20: 5,719,426 km (0.082 R)
- M21: 6,316,172 km (0.106 R)
- M22: 6,560,465 km (0.106 R)
- M23: 7,016,290 km (0.087 R)
- M24: 7,396,867 km (0.032 R)
- M25: 8,178,067 km (0.095 R)
- M26: 9,076,701 km (0.039 R)
- M27: 9,168,255 km (0.111 R)
- M28: 9,306,184 km (0.078 R)
- M29: 9,911,906 km (0.077 R)
- M30: 10,006,153 km (0.117 R)
- M31: 12,306,968 km (0.078 R)
- M32: 12,408,395 km (0.113 R)
- M33: 13,333,509 km (0.118 R)
- M34: 14,174,548 km (0.096 R)
- M35: 14,334,019 km (0.091 R)
- M36: 14,655,056 km (0.072 R)
- M37: 14,870,328 km (0.099 R)
- M38: 16,128,446 km (0.109 R)
- M39: 16,798,345 km (0.117 R)
- M40: 17,648,360 km (0.076 R)
- M41: 17,934,840 km (0.045 R)
- M42: 19,272,394 km (0.076 R)
- M43: 19,685,883 km (0.103 R)
- M44: 19,923,444 km (0.098 R)
- M45: 20,461,398 km (0.102 R)
- M46: 20,702,101 km (0.118 R)
- M47: 21,004,139 km (0.077 R)
- M48: 21,429,596 km (0.114 R)
- M49: 21,980,714 km (0.12 R)
- M50: 22,103,833 km (0.112 R)
- M51: 22,474,537 km (0.084 R)
- M52: 22,660,637 km (0.051 R)
- M53: 24,998,103 km (0.028 R)
- M54: 26,032,423 km (0.094 R)
- M55: 26,227,798 km (0.066 R)
- M56: 26,293,172 km (0.093 R)
- M57: 26,620,343 km (0.115 R)
- M58: 26,817,213 km (0.12 R)
- M59: 26,883,037 km (0.036 R)
- M60: 27,014,683 km (0.11 R)
- M61: 27,609,783 km (0.087 R)
- M62: 28,276,242 km (0.09 R)
- M63: 28,410,132 km (0.089 R)
- M64: 30,033,568 km (0.119 R)
- M65: 30,238,517 km (0.114 R)
- M66: 30,512,730 km (0.041 R)
- M67: 31,965,175 km (0.05 R)
- M68: 32,314,337 km (0.104 R)
- M69: 33,723,549 km (0.104 R)
- M70: 34,435,784 km (0.036 R)
- M71: 35,080,850 km (0.054 R)
- M72: 35,802,361 km (0.1 R)
- M73: 38,291,819 km (0.079 R)
- M74: 38,588,472 km (0.117 R)
- M75: 39,109,222 km (0.081 R)
- M76: 40,534,441 km (0.093 R)
- M77: 42,589,018 km (0.103 R)
- M78: 43,977,286 km (0.09 R)
- M79: 44,521,224 km (0.112 R)
- M80: 47,036,114 km (0.091 R)
- M81: 48,310,688 km (0.091 R)
- M82: 49,515,848 km (0.093 R)
- M83: 49,677,264 km (0.041 R)
- M84: 50,243,791 km (0.074 R)
- M85: 50,405,955 km (0.071 R)
- M86: 50,568,419 km (0.114 R)
- M87: 51,628,320 km (0.117 R)
- M88: 52,037,919 km (0.108 R)
- M89: 52,202,027 km (0.093 R)
- M90: 53,025,264 km (0.055 R)
- M91: 53,190,421 km (0.113 R)
- M92: 53,273,148 km (0.112 R)
- M93: 53,521,331 km (0.117 R)
- M94: 54,851,555 km (0.108 R)
- M95: 55,269,532 km (0.082 R)
- M96: 55,520,856 km (0.07 R)
Planet 6 - Ice Giant
Semi-Major Axis: 8.38 AU
Status: Outer (Cold)
Composition: Methane/Ammonia Ices
Physical Data
Mass: 464
Radius: 3.5
Gravity: 37.88 G
Time & Orbit
Eccentricity (e): 0.067
Orbit Range: 7.82 AU - 8.94 AU
Year: 16745 Days
Day: 22.3 Hours
Environment
Temp: -242 °C
Axial Tilt: 112.8 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (96)
Outer Limit: 59,360,028 km
- M1: 64,477 km (0.06 R)
- M2: 237,113 km (0.112 R)
- M3: 465,698 km (0.105 R)
- M4: 536,009 km (0.101 R)
- M5: 686,953 km (0.109 R)
- M6: 746,942 km (0.05 R)
- M7: 1,286,242 km (0.07 R)
- M8: 1,310,926 km (0.118 R)
- M9: 1,698,684 km (0.102 R)
- M10: 2,090,630 km (0.109 R)
- M11: 2,326,696 km (0.081 R)
- M12: 2,855,973 km (0.093 R)
- M13: 3,150,681 km (0.07 R)
- M14: 3,524,077 km (0.077 R)
- M15: 4,128,004 km (0.078 R)
- M16: 4,311,710 km (0.05 R)
- M17: 4,535,658 km (0.1 R)
- M18: 5,589,425 km (0.097 R)
- M19: 6,039,565 km (0.103 R)
- M20: 6,081,004 km (0.029 R)
- M21: 6,671,915 km (0.099 R)
- M22: 6,757,785 km (0.073 R)
- M23: 7,369,341 km (0.062 R)
- M24: 7,636,822 km (0.036 R)
- M25: 7,907,444 km (0.086 R)
- M26: 8,319,138 km (0.057 R)
- M27: 8,411,739 km (0.1 R)
- M28: 10,881,749 km (0.052 R)
- M29: 11,237,044 km (0.084 R)
- M30: 11,596,229 km (0.112 R)
- M31: 11,959,153 km (0.111 R)
- M32: 12,063,572 km (0.093 R)
- M33: 13,285,338 km (0.099 R)
- M34: 14,048,138 km (0.111 R)
- M35: 14,158,242 km (0.104 R)
- M36: 15,615,774 km (0.113 R)
- M37: 15,729,917 km (0.095 R)
- M38: 16,073,693 km (0.083 R)
- M39: 16,246,628 km (0.105 R)
- M40: 17,061,488 km (0.038 R)
- M41: 18,009,040 km (0.08 R)
- M42: 18,912,761 km (0.087 R)
- M43: 20,202,594 km (0.092 R)
- M44: 20,513,758 km (0.065 R)
- M45: 21,267,282 km (0.063 R)
- M46: 21,710,989 km (0.1 R)
- M47: 22,607,380 km (0.115 R)
- M48: 22,736,483 km (0.106 R)
- M49: 22,995,287 km (0.093 R)
- M50: 23,125,138 km (0.111 R)
- M51: 23,581,412 km (0.06 R)
- M52: 24,768,022 km (0.093 R)
- M53: 24,901,014 km (0.09 R)
- M54: 25,101,027 km (0.094 R)
- M55: 26,312,321 km (0.118 R)
- M56: 27,130,322 km (0.076 R)
- M57: 27,473,649 km (0.096 R)
- M58: 27,749,358 km (0.068 R)
- M59: 28,164,492 km (0.114 R)
- M60: 29,211,527 km (0.043 R)
- M61: 29,916,732 km (0.101 R)
- M62: 31,992,851 km (0.033 R)
- M63: 32,355,626 km (0.099 R)
- M64: 34,337,199 km (0.049 R)
- M65: 35,380,196 km (0.085 R)
- M66: 36,660,454 km (0.103 R)
- M67: 38,570,669 km (0.12 R)
- M68: 40,200,089 km (0.109 R)
- M69: 40,356,569 km (0.094 R)
- M70: 40,591,437 km (0.063 R)
- M71: 41,062,521 km (0.061 R)
- M72: 42,089,660 km (0.082 R)
- M73: 42,248,383 km (0.084 R)
- M74: 42,566,578 km (0.094 R)
- M75: 46,445,501 km (0.097 R)
- M76: 46,773,869 km (0.076 R)
- M77: 47,185,412 km (0.109 R)
- M78: 47,267,841 km (0.06 R)
- M79: 47,929,063 km (0.078 R)
- M80: 48,343,898 km (0.086 R)
- M81: 50,099,130 km (0.115 R)
- M82: 50,351,651 km (0.116 R)
- M83: 51,111,459 km (0.094 R)
- M84: 51,196,131 km (0.11 R)
- M85: 52,045,398 km (0.105 R)
- M86: 52,301,061 km (0.082 R)
- M87: 52,984,873 km (0.089 R)
- M88: 53,413,770 km (0.113 R)
- M89: 53,757,696 km (0.099 R)
- M90: 54,620,875 km (0.068 R)
- M91: 55,140,878 km (0.117 R)
- M92: 55,488,543 km (0.072 R)
- M93: 56,360,699 km (0.064 R)
- M94: 57,942,098 km (0.051 R)
- M95: 58,030,360 km (0.094 R)
- M96: 58,384,010 km (0.111 R)
Kuiper Belt
Range: 30 - 60 AU
Composition
Type: Dwarf Planets/TNOs (Ices)
Reservoir of dwarf planets and volatile ices.
Outer System
Oort Cloud
Range: 361 - 10,671 AU
Composition
Type: Cometary Reservoir
System's final boundary, containing trillions of icy planetesimals.