Star System Generated (Seed: 1768121192)
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: 1.51 AU
Status: Outer (Cold)
Composition: Hydrogen/Helium Atmosphere
Physical Data
Mass: 343.8
Radius: 12.5
Gravity: 2.2 G
Time & Orbit
Eccentricity (e): 0.068
Orbit Range: 1.41 AU - 1.61 AU
Year: 1281 Days
Day: 9.4 Hours
Environment
Temp: -194 °C
Axial Tilt: 31.6 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (56)
Outer Limit: 43,067,149 km
- M1: 167,998 km (0.112 R)
- M2: 271,670 km (0.035 R)
- M3: 358,885 km (0.068 R)
- M4: 470,336 km (0.066 R)
- M5: 561,291 km (0.026 R)
- M6: 643,720 km (0.045 R)
- M7: 822,938 km (0.092 R)
- M8: 975,528 km (0.025 R)
- M9: 1,219,671 km (0.04 R)
- M10: 1,352,963 km (0.098 R)
- M11: 1,491,491 km (0.11 R)
- M12: 1,665,922 km (0.12 R)
- M13: 1,815,071 km (0.064 R)
- M14: 1,895,555 km (0.026 R)
- M15: 1,985,463 km (0.074 R)
- M16: 2,093,622 km (0.117 R)
- M17: 2,203,876 km (0.071 R)
- M18: 2,324,901 km (0.104 R)
- M19: 2,501,725 km (0.059 R)
- M20: 2,610,034 km (0.088 R)
- M21: 2,803,314 km (0.105 R)
- M22: 2,944,385 km (0.073 R)
- M23: 3,223,984 km (0.031 R)
- M24: 3,502,236 km (0.084 R)
- M25: 3,613,836 km (0.046 R)
- M26: 3,736,805 km (0.111 R)
- M27: 3,987,082 km (0.109 R)
- M28: 4,092,998 km (0.1 R)
- M29: 4,362,124 km (0.078 R)
- M30: 4,526,383 km (0.091 R)
- M31: 4,692,586 km (0.081 R)
- M32: 4,782,195 km (0.115 R)
- M33: 4,894,992 km (0.066 R)
- M34: 5,180,724 km (0.086 R)
- M35: 5,366,524 km (0.085 R)
- M36: 5,625,778 km (0.067 R)
- M37: 6,010,094 km (0.108 R)
- M38: 6,527,553 km (0.075 R)
- M39: 6,690,615 km (0.065 R)
- M40: 6,829,741 km (0.112 R)
- M41: 6,969,765 km (0.084 R)
- M42: 7,059,524 km (0.066 R)
- M43: 7,201,043 km (0.078 R)
- M44: 7,330,744 km (0.099 R)
- M45: 7,487,224 km (0.044 R)
- M46: 7,565,912 km (0.114 R)
- M47: 7,816,938 km (0.101 R)
- M48: 7,963,543 km (0.081 R)
- M49: 8,273,061 km (0.097 R)
- M50: 8,354,443 km (0.095 R)
- M51: 8,655,284 km (0.12 R)
- M52: 8,806,976 km (0.061 R)
- M53: 8,904,065 km (0.111 R)
- M54: 8,987,541 km (0.088 R)
- M55: 9,225,401 km (0.104 R)
- M56: 9,522,204 km (0.118 R)
Planet 2 - Gas Giant
Semi-Major Axis: 2.04 AU
Status: Outer (Cold)
Composition: Hydrogen/Helium Atmosphere
Physical Data
Mass: 677.2
Radius: 11.8
Gravity: 4.86 G
Time & Orbit
Eccentricity (e): 0.194
Orbit Range: 1.64 AU - 2.44 AU
Year: 2011 Days
Day: 9.8 Hours
Environment
Temp: -212 °C
Axial Tilt: 39.1 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (64)
Outer Limit: 43,067,149 km
- M1: 192,682 km (0.091 R)
- M2: 276,756 km (0.106 R)
- M3: 422,165 km (0.039 R)
- M4: 549,323 km (0.112 R)
- M5: 691,591 km (0.095 R)
- M6: 772,075 km (0.109 R)
- M7: 864,676 km (0.103 R)
- M8: 1,043,744 km (0.091 R)
- M9: 1,128,417 km (0.11 R)
- M10: 1,205,908 km (0.116 R)
- M11: 1,285,345 km (0.084 R)
- M12: 1,418,487 km (0.066 R)
- M13: 1,534,874 km (0.106 R)
- M14: 1,698,833 km (0.086 R)
- M15: 1,800,261 km (0.085 R)
- M16: 1,997,281 km (0.119 R)
- M17: 2,425,729 km (0.115 R)
- M18: 2,566,501 km (0.059 R)
- M19: 2,749,609 km (0.088 R)
- M20: 3,758,347 km (0.112 R)
- M21: 4,395,784 km (0.106 R)
- M22: 5,034,118 km (0.068 R)
- M23: 5,447,906 km (0.096 R)
- M24: 5,735,732 km (0.101 R)
- M25: 6,185,423 km (0.069 R)
- M26: 6,414,607 km (0.059 R)
- M27: 6,574,976 km (0.045 R)
- M28: 6,736,691 km (0.109 R)
- M29: 6,827,048 km (0.119 R)
- M30: 6,972,458 km (0.106 R)
- M31: 7,192,666 km (0.037 R)
- M32: 8,038,791 km (0.096 R)
- M33: 8,231,174 km (0.062 R)
- M34: 8,425,053 km (0.109 R)
- M35: 8,640,025 km (0.034 R)
- M36: 8,896,436 km (0.077 R)
- M37: 9,255,770 km (0.039 R)
- M38: 9,497,969 km (0.092 R)
- M39: 9,762,607 km (0.083 R)
- M40: 10,216,338 km (0.04 R)
- M41: 10,299,514 km (0.034 R)
- M42: 10,634,613 km (0.047 R)
- M43: 10,718,987 km (0.104 R)
- M44: 10,867,089 km (0.039 R)
- M45: 11,079,966 km (0.083 R)
- M46: 11,165,536 km (0.091 R)
- M47: 11,294,190 km (0.094 R)
- M48: 11,423,443 km (0.051 R)
- M49: 11,770,360 km (0.074 R)
- M50: 12,164,850 km (0.103 R)
- M51: 12,585,968 km (0.091 R)
- M52: 12,697,718 km (0.084 R)
- M53: 13,147,558 km (0.087 R)
- M54: 13,260,804 km (0.055 R)
- M55: 13,351,610 km (0.118 R)
- M56: 13,786,042 km (0.114 R)
- M57: 14,364,836 km (0.07 R)
- M58: 14,528,197 km (0.088 R)
- M59: 14,904,286 km (0.059 R)
- M60: 15,046,105 km (0.104 R)
- M61: 15,593,932 km (0.073 R)
- M62: 15,761,931 km (0.1 R)
- M63: 16,075,488 km (0.047 R)
- M64: 16,172,427 km (0.077 R)
Planet 3 - Gas Giant
Semi-Major Axis: 2.19 AU
Status: Outer (Cold)
Composition: Hydrogen/Helium Atmosphere
Physical Data
Mass: 423.9
Radius: 11.1
Gravity: 3.44 G
Time & Orbit
Eccentricity (e): 0.074
Orbit Range: 2.03 AU - 2.35 AU
Year: 2237 Days
Day: 10.9 Hours
Environment
Temp: -212 °C
Axial Tilt: 1.5 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (67)
Outer Limit: 43,067,149 km
- M1: 143,315 km (0.043 R)
- M2: 231,578 km (0.108 R)
- M3: 325,226 km (0.082 R)
- M4: 488,287 km (0.086 R)
- M5: 631,004 km (0.109 R)
- M6: 853,306 km (0.118 R)
- M7: 987,196 km (0.06 R)
- M8: 1,083,687 km (0.108 R)
- M9: 1,211,294 km (0.101 R)
- M10: 1,305,690 km (0.101 R)
- M11: 1,392,756 km (0.096 R)
- M12: 1,472,043 km (0.049 R)
- M13: 1,573,321 km (0.085 R)
- M14: 1,666,520 km (0.067 R)
- M15: 1,869,674 km (0.069 R)
- M16: 1,980,077 km (0.115 R)
- M17: 2,069,836 km (0.11 R)
- M18: 2,443,232 km (0.092 R)
- M19: 2,901,301 km (0.116 R)
- M20: 3,016,940 km (0.073 R)
- M21: 3,252,856 km (0.101 R)
- M22: 3,645,551 km (0.055 R)
- M23: 3,798,589 km (0.089 R)
- M24: 4,024,931 km (0.067 R)
- M25: 4,491,078 km (0.116 R)
- M26: 4,565,428 km (0.1 R)
- M27: 4,745,693 km (0.111 R)
- M28: 4,882,575 km (0.035 R)
- M29: 4,959,020 km (0.094 R)
- M30: 5,191,196 km (0.113 R)
- M31: 5,269,435 km (0.066 R)
- M32: 5,395,247 km (0.082 R)
- M33: 5,554,120 km (0.099 R)
- M34: 5,941,728 km (0.117 R)
- M35: 6,404,883 km (0.104 R)
- M36: 6,505,712 km (0.088 R)
- M37: 6,658,003 km (0.112 R)
- M38: 6,983,229 km (0.081 R)
- M39: 7,087,050 km (0.109 R)
- M40: 7,278,684 km (0.104 R)
- M41: 7,738,548 km (0.063 R)
- M42: 7,953,969 km (0.101 R)
- M43: 8,116,881 km (0.097 R)
- M44: 8,317,492 km (0.068 R)
- M45: 8,390,795 km (0.028 R)
- M46: 8,798,150 km (0.117 R)
- M47: 8,947,897 km (0.115 R)
- M48: 9,230,937 km (0.113 R)
- M49: 9,364,079 km (0.107 R)
- M50: 9,478,671 km (0.11 R)
- M51: 9,574,563 km (0.085 R)
- M52: 9,690,052 km (0.086 R)
- M53: 9,805,841 km (0.079 R)
- M54: 9,883,483 km (0.088 R)
- M55: 9,980,721 km (0.08 R)
- M56: 10,156,499 km (0.083 R)
- M57: 10,630,425 km (0.053 R)
- M58: 10,770,000 km (0.116 R)
- M59: 10,870,080 km (0.114 R)
- M60: 11,579,324 km (0.082 R)
- M61: 12,115,932 km (0.074 R)
- M62: 12,429,189 km (0.053 R)
- M63: 12,724,047 km (0.072 R)
- M64: 12,829,813 km (0.12 R)
- M65: 13,149,204 km (0.083 R)
- M66: 13,969,898 km (0.105 R)
- M67: 14,496,782 km (0.083 R)
Planet 4 - Gas Giant
Semi-Major Axis: 3.16 AU
Status: Outer (Cold)
Composition: Hydrogen/Helium Atmosphere
Physical Data
Mass: 664.9
Radius: 14.4
Gravity: 3.21 G
Time & Orbit
Eccentricity (e): 0.084
Orbit Range: 2.89 AU - 3.43 AU
Year: 3877 Days
Day: 8.2 Hours
Environment
Temp: -219 °C
Axial Tilt: 28.4 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (68)
Outer Limit: 43,067,149 km
- M1: 211,980 km (0.119 R)
- M2: 364,720 km (0.099 R)
- M3: 556,654 km (0.052 R)
- M4: 889,659 km (0.078 R)
- M5: 1,233,734 km (0.073 R)
- M6: 1,533,977 km (0.092 R)
- M7: 1,737,878 km (0.11 R)
- M8: 1,904,530 km (0.119 R)
- M9: 2,156,753 km (0.082 R)
- M10: 2,270,596 km (0.104 R)
- M11: 2,889,034 km (0.114 R)
- M12: 3,500,889 km (0.028 R)
- M13: 3,597,230 km (0.042 R)
- M14: 3,812,203 km (0.108 R)
- M15: 4,092,250 km (0.086 R)
- M16: 4,503,943 km (0.042 R)
- M17: 4,672,390 km (0.103 R)
- M18: 4,907,558 km (0.104 R)
- M19: 5,681,727 km (0.092 R)
- M20: 5,933,052 km (0.096 R)
- M21: 6,048,541 km (0.057 R)
- M22: 6,517,979 km (0.094 R)
- M23: 6,637,209 km (0.1 R)
- M24: 6,757,186 km (0.091 R)
- M25: 6,999,236 km (0.091 R)
- M26: 7,195,059 km (0.06 R)
- M27: 7,567,109 km (0.117 R)
- M28: 7,920,160 km (0.114 R)
- M29: 8,563,880 km (0.102 R)
- M30: 8,931,890 km (0.099 R)
- M31: 9,091,212 km (0.099 R)
- M32: 9,574,713 km (0.063 R)
- M33: 9,683,321 km (0.073 R)
- M34: 10,066,890 km (0.098 R)
- M35: 10,483,220 km (0.094 R)
- M36: 10,764,016 km (0.047 R)
- M37: 11,447,977 km (0.11 R)
- M38: 12,175,472 km (0.118 R)
- M39: 12,352,296 km (0.111 R)
- M40: 12,648,949 km (0.073 R)
- M41: 13,128,560 km (0.117 R)
- M42: 13,736,525 km (0.112 R)
- M43: 14,105,583 km (0.103 R)
- M44: 14,198,484 km (0.109 R)
- M45: 14,728,210 km (0.106 R)
- M46: 15,169,374 km (0.107 R)
- M47: 15,391,676 km (0.033 R)
- M48: 15,743,082 km (0.081 R)
- M49: 16,780,393 km (0.116 R)
- M50: 16,944,502 km (0.086 R)
- M51: 17,307,426 km (0.064 R)
- M52: 17,706,254 km (0.116 R)
- M53: 17,940,375 km (0.109 R)
- M54: 18,377,799 km (0.064 R)
- M55: 18,818,814 km (0.051 R)
- M56: 19,160,346 km (0.119 R)
- M57: 19,263,269 km (0.029 R)
- M58: 20,758,051 km (0.114 R)
- M59: 21,181,862 km (0.071 R)
- M60: 21,894,546 km (0.079 R)
- M61: 22,362,039 km (0.09 R)
- M62: 22,651,362 km (0.072 R)
- M63: 23,051,237 km (0.037 R)
- M64: 23,233,896 km (0.091 R)
- M65: 23,637,062 km (0.093 R)
- M66: 23,858,018 km (0.077 R)
- M67: 24,450,575 km (0.101 R)
- M68: 25,123,167 km (0.082 R)
Planet 5 - Gas Giant
Semi-Major Axis: 4.25 AU
Status: Outer (Cold)
Composition: Hydrogen/Helium Atmosphere
Physical Data
Mass: 724.3
Radius: 13.7
Gravity: 3.86 G
Time & Orbit
Eccentricity (e): 0.018
Orbit Range: 4.17 AU - 4.33 AU
Year: 6048 Days
Day: 12.8 Hours
Environment
Temp: -227 °C
Axial Tilt: 27.3 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (79)
Outer Limit: 43,067,149 km
- M1: 173,534 km (0.102 R)
- M2: 291,566 km (0.116 R)
- M3: 397,930 km (0.081 R)
- M4: 898,485 km (0.071 R)
- M5: 1,016,368 km (0.095 R)
- M6: 1,187,957 km (0.089 R)
- M7: 1,285,794 km (0.03 R)
- M8: 1,561,203 km (0.079 R)
- M9: 1,894,208 km (0.118 R)
- M10: 2,049,640 km (0.098 R)
- M11: 2,478,388 km (0.046 R)
- M12: 2,758,286 km (0.101 R)
- M13: 3,756,403 km (0.036 R)
- M14: 3,879,372 km (0.092 R)
- M15: 4,053,803 km (0.101 R)
- M16: 4,307,521 km (0.091 R)
- M17: 4,540,445 km (0.036 R)
- M18: 4,698,121 km (0.097 R)
- M19: 5,291,725 km (0.053 R)
- M20: 5,541,554 km (0.05 R)
- M21: 5,653,902 km (0.072 R)
- M22: 6,343,548 km (0.11 R)
- M23: 6,461,132 km (0.102 R)
- M24: 6,698,544 km (0.103 R)
- M25: 6,908,729 km (0.027 R)
- M26: 7,182,044 km (0.099 R)
- M27: 7,552,149 km (0.116 R)
- M28: 7,896,823 km (0.096 R)
- M29: 7,991,817 km (0.119 R)
- M30: 8,150,840 km (0.106 R)
- M31: 8,536,952 km (0.087 R)
- M32: 8,634,490 km (0.12 R)
- M33: 8,764,939 km (0.037 R)
- M34: 8,995,021 km (0.044 R)
- M35: 9,160,626 km (0.106 R)
- M36: 9,293,768 km (0.108 R)
- M37: 9,394,148 km (0.098 R)
- M38: 10,382,541 km (0.081 R)
- M39: 10,906,732 km (0.115 R)
- M40: 11,118,862 km (0.115 R)
- M41: 11,260,980 km (0.112 R)
- M42: 11,368,092 km (0.043 R)
- M43: 12,200,006 km (0.102 R)
- M44: 13,164,014 km (0.108 R)
- M45: 13,769,586 km (0.077 R)
- M46: 14,345,538 km (0.056 R)
- M47: 14,694,849 km (0.114 R)
- M48: 15,322,861 km (0.093 R)
- M49: 15,560,572 km (0.112 R)
- M50: 15,999,791 km (0.114 R)
- M51: 16,890,348 km (0.03 R)
- M52: 17,506,691 km (0.058 R)
- M53: 17,755,322 km (0.105 R)
- M54: 18,088,776 km (0.031 R)
- M55: 20,567,014 km (0.082 R)
- M56: 21,579,044 km (0.11 R)
- M57: 22,247,747 km (0.104 R)
- M58: 24,248,618 km (0.096 R)
- M59: 24,340,920 km (0.101 R)
- M60: 24,804,225 km (0.083 R)
- M61: 24,943,799 km (0.075 R)
- M62: 25,410,994 km (0.1 R)
- M63: 25,551,616 km (0.074 R)
- M64: 27,212,301 km (0.098 R)
- M65: 27,356,215 km (0.095 R)
- M66: 27,934,710 km (0.11 R)
- M67: 28,419,706 km (0.102 R)
- M68: 28,858,776 km (0.102 R)
- M69: 29,299,940 km (0.113 R)
- M70: 30,387,965 km (0.09 R)
- M71: 30,637,046 km (0.095 R)
- M72: 31,037,070 km (0.105 R)
- M73: 31,287,946 km (0.028 R)
- M74: 31,438,741 km (0.116 R)
- M75: 31,741,227 km (0.112 R)
- M76: 32,095,326 km (0.043 R)
- M77: 32,196,753 km (0.07 R)
- M78: 32,654,373 km (0.11 R)
- M79: 34,558,305 km (0.098 R)
Planet 6 - Ice Giant
Semi-Major Axis: 8.03 AU
Status: Outer (Cold)
Composition: Methane/Ammonia Ices
Physical Data
Mass: 201.4
Radius: 6.5
Gravity: 4.77 G
Time & Orbit
Eccentricity (e): 0.004
Orbit Range: 8 AU - 8.06 AU
Year: 15707 Days
Day: 16.2 Hours
Environment
Temp: -227 °C
Axial Tilt: 33.2 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (92)
Outer Limit: 43,067,149 km
- M1: 84,672 km (0.093 R)
- M2: 202,406 km (0.117 R)
- M3: 1,183,918 km (0.107 R)
- M4: 1,627,774 km (0.036 R)
- M5: 1,957,787 km (0.117 R)
- M6: 2,049,341 km (0.102 R)
- M7: 2,578,170 km (0.072 R)
- M8: 2,628,285 km (0.05 R)
- M9: 2,857,768 km (0.056 R)
- M10: 3,754,009 km (0.074 R)
- M11: 4,760,653 km (0.054 R)
- M12: 4,884,370 km (0.062 R)
- M13: 4,946,603 km (0.072 R)
- M14: 5,071,966 km (0.062 R)
- M15: 5,421,876 km (0.096 R)
- M16: 5,551,128 km (0.054 R)
- M17: 6,011,441 km (0.11 R)
- M18: 6,111,671 km (0.098 R)
- M19: 6,246,160 km (0.073 R)
- M20: 6,347,737 km (0.099 R)
- M21: 6,690,166 km (0.111 R)
- M22: 6,968,418 km (0.108 R)
- M23: 7,250,410 km (0.064 R)
- M24: 7,536,292 km (0.11 R)
- M25: 8,155,777 km (0.088 R)
- M26: 8,341,128 km (0.092 R)
- M27: 9,019,854 km (0.116 R)
- M28: 9,482,111 km (0.052 R)
- M29: 9,873,310 km (0.058 R)
- M30: 9,952,148 km (0.084 R)
- M31: 10,110,572 km (0.09 R)
- M32: 11,365,997 km (0.113 R)
- M33: 11,448,575 km (0.038 R)
- M34: 12,159,465 km (0.101 R)
- M35: 12,201,651 km (0.07 R)
- M36: 12,286,324 km (0.079 R)
- M37: 12,927,500 km (0.091 R)
- M38: 12,970,734 km (0.106 R)
- M39: 13,579,597 km (0.029 R)
- M40: 13,843,338 km (0.114 R)
- M41: 14,064,593 km (0.086 R)
- M42: 15,507,315 km (0.074 R)
- M43: 15,553,242 km (0.102 R)
- M44: 15,691,021 km (0.102 R)
- M45: 15,783,024 km (0.104 R)
- M46: 17,280,948 km (0.094 R)
- M47: 18,628,226 km (0.085 R)
- M48: 19,265,363 km (0.093 R)
- M49: 19,413,316 km (0.07 R)
- M50: 20,159,061 km (0.045 R)
- M51: 20,409,637 km (0.053 R)
- M52: 20,459,902 km (0.117 R)
- M53: 20,762,389 km (0.096 R)
- M54: 21,066,223 km (0.113 R)
- M55: 21,371,552 km (0.057 R)
- M56: 21,627,215 km (0.052 R)
- M57: 21,986,698 km (0.038 R)
- M58: 22,038,310 km (0.061 R)
- M59: 22,451,948 km (0.068 R)
- M60: 22,555,769 km (0.078 R)
- M61: 22,815,919 km (0.114 R)
- M62: 23,286,853 km (0.109 R)
- M63: 23,549,846 km (0.059 R)
- M64: 24,504,879 km (0.099 R)
- M65: 24,718,804 km (0.118 R)
- M66: 25,148,449 km (0.081 R)
- M67: 26,015,369 km (0.059 R)
- M68: 26,671,804 km (0.037 R)
- M69: 26,891,863 km (0.033 R)
- M70: 27,555,778 km (0.085 R)
- M71: 29,807,077 km (0.12 R)
- M72: 30,724,111 km (0.117 R)
- M73: 31,301,858 km (0.032 R)
- M74: 31,359,902 km (0.09 R)
- M75: 31,534,034 km (0.119 R)
- M76: 31,825,002 km (0.093 R)
- M77: 32,116,868 km (0.117 R)
- M78: 33,056,641 km (0.054 R)
- M79: 33,589,360 km (0.113 R)
- M80: 34,963,416 km (0.105 R)
- M81: 35,324,994 km (0.048 R)
- M82: 36,112,328 km (0.03 R)
- M83: 36,783,124 km (0.084 R)
- M84: 36,844,310 km (0.103 R)
- M85: 37,028,166 km (0.054 R)
- M86: 37,335,141 km (0.059 R)
- M87: 37,827,916 km (0.112 R)
- M88: 39,507,302 km (0.085 R)
- M89: 41,338,080 km (0.032 R)
- M90: 42,167,601 km (0.094 R)
- M91: 42,616,544 km (0.117 R)
- M92: 42,873,852 km (0.108 R)
Kuiper Belt
Range: 30 - 53 AU
Composition
Type: Dwarf Planets/TNOs (Ices)
Reservoir of dwarf planets and volatile ices.
Outer System
Oort Cloud
Range: 325 - 12,001 AU
Composition
Type: Cometary Reservoir
System's final boundary, containing trillions of icy planetesimals.