Star System Generated (Seed: 1766125421)
Star Details
Spectral Class: M9V
Temperature: 2,400 K
Mass: 0.27 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: 10.4 AU
Planetary System (7 Planets)
Planet 1 - Gas Giant
Semi-Major Axis: 0.61 AU
Status: Outer (Cold)
Composition: Hydrogen/Helium Atmosphere
Physical Data
Mass: 906.5
Radius: 9.2
Gravity: 10.71 G
Time & Orbit
Eccentricity (e): 0.124
Orbit Range: 0.53 AU - 0.69 AU
Year: 335 Days
Day: 13.4 Hours
Environment
Temp: -156 °C
Axial Tilt: 9.7 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (46)
Outer Limit: 88,537,370 km
- M1: 134,339 km (0.095 R)
- M2: 197,020 km (0.087 R)
- M3: 271,221 km (0.041 R)
- M4: 379,979 km (0.045 R)
- M5: 483,052 km (0.039 R)
- M6: 582,534 km (0.049 R)
- M7: 720,314 km (0.054 R)
- M8: 779,555 km (0.104 R)
- M9: 869,612 km (0.105 R)
- M10: 941,719 km (0.114 R)
- M11: 1,120,039 km (0.083 R)
- M12: 1,203,964 km (0.088 R)
- M13: 1,309,430 km (0.06 R)
- M14: 1,463,666 km (0.052 R)
- M15: 1,530,087 km (0.075 R)
- M16: 1,779,018 km (0.11 R)
- M17: 2,024,059 km (0.053 R)
- M18: 2,162,437 km (0.116 R)
- M19: 2,244,566 km (0.085 R)
- M20: 2,303,807 km (0.051 R)
- M21: 2,387,881 km (0.101 R)
- M22: 2,472,853 km (0.118 R)
- M23: 2,546,605 km (0.05 R)
- M24: 2,702,486 km (0.082 R)
- M25: 2,945,582 km (0.106 R)
- M26: 3,069,898 km (0.031 R)
- M27: 3,129,438 km (0.08 R)
- M28: 3,269,761 km (0.095 R)
- M29: 3,344,111 km (0.095 R)
- M30: 3,460,049 km (0.096 R)
- M31: 3,535,895 km (0.071 R)
- M32: 3,682,202 km (0.079 R)
- M33: 3,773,756 km (0.096 R)
- M34: 3,859,027 km (0.098 R)
- M35: 3,995,161 km (0.074 R)
- M36: 4,089,407 km (0.103 R)
- M37: 4,169,592 km (0.118 R)
- M38: 4,265,185 km (0.111 R)
- M39: 4,376,336 km (0.112 R)
- M40: 4,525,934 km (0.025 R)
- M41: 4,746,142 km (0.082 R)
- M42: 4,915,487 km (0.108 R)
- M43: 5,008,686 km (0.069 R)
- M44: 5,094,705 km (0.098 R)
- M45: 5,188,952 km (0.113 R)
- M46: 5,283,946 km (0.092 R)
Planet 2 - Gas Giant
Semi-Major Axis: 0.8 AU
Status: Outer (Cold)
Composition: Hydrogen/Helium Atmosphere
Physical Data
Mass: 166.1
Radius: 12.6
Gravity: 1.05 G
Time & Orbit
Eccentricity (e): 0.111
Orbit Range: 0.71 AU - 0.89 AU
Year: 503 Days
Day: 10.6 Hours
Environment
Temp: -173 °C
Axial Tilt: 33.5 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (31)
Outer Limit: 88,537,370 km
- M1: 158,574 km (0.056 R)
- M2: 246,986 km (0.105 R)
- M3: 335,997 km (0.106 R)
- M4: 414,386 km (0.076 R)
- M5: 552,615 km (0.118 R)
- M6: 646,263 km (0.093 R)
- M7: 730,636 km (0.063 R)
- M8: 842,386 km (0.114 R)
- M9: 936,483 km (0.116 R)
- M10: 1,088,474 km (0.054 R)
- M11: 1,215,034 km (0.09 R)
- M12: 1,299,706 km (0.093 R)
- M13: 1,402,480 km (0.119 R)
- M14: 1,516,324 km (0.071 R)
- M15: 1,697,786 km (0.101 R)
- M16: 1,881,941 km (0.093 R)
- M17: 1,999,525 km (0.094 R)
- M18: 2,256,385 km (0.091 R)
- M19: 2,440,390 km (0.062 R)
- M20: 2,569,194 km (0.115 R)
- M21: 2,746,168 km (0.112 R)
- M22: 2,922,095 km (0.092 R)
- M23: 3,107,148 km (0.103 R)
- M24: 3,193,167 km (0.053 R)
- M25: 3,307,160 km (0.113 R)
- M26: 3,466,931 km (0.058 R)
- M27: 3,646,149 km (0.098 R)
- M28: 3,754,159 km (0.095 R)
- M29: 3,857,381 km (0.109 R)
- M30: 3,944,297 km (0.106 R)
- M31: 4,031,663 km (0.073 R)
Planet 3 - Gas Giant
Semi-Major Axis: 1.01 AU
Status: Outer (Cold)
Composition: Hydrogen/Helium Atmosphere
Physical Data
Mass: 843.3
Radius: 13.7
Gravity: 4.49 G
Time & Orbit
Eccentricity (e): 0.058
Orbit Range: 0.95 AU - 1.07 AU
Year: 713 Days
Day: 6.5 Hours
Environment
Temp: -181 °C
Axial Tilt: 33 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (54)
Outer Limit: 88,537,370 km
- M1: 170,691 km (0.104 R)
- M2: 352,004 km (0.084 R)
- M3: 477,965 km (0.104 R)
- M4: 609,911 km (0.115 R)
- M5: 783,294 km (0.075 R)
- M6: 980,764 km (0.064 R)
- M7: 1,070,822 km (0.116 R)
- M8: 1,170,304 km (0.051 R)
- M9: 1,279,810 km (0.054 R)
- M10: 1,386,323 km (0.055 R)
- M11: 1,559,109 km (0.076 R)
- M12: 1,644,679 km (0.075 R)
- M13: 1,858,454 km (0.099 R)
- M14: 1,972,747 km (0.116 R)
- M15: 2,089,433 km (0.082 R)
- M16: 2,192,656 km (0.042 R)
- M17: 2,420,793 km (0.079 R)
- M18: 2,657,008 km (0.113 R)
- M19: 2,760,530 km (0.084 R)
- M20: 2,847,895 km (0.112 R)
- M21: 2,998,689 km (0.089 R)
- M22: 3,161,452 km (0.106 R)
- M23: 3,308,507 km (0.107 R)
- M24: 3,533,502 km (0.095 R)
- M25: 3,695,965 km (0.119 R)
- M26: 3,812,203 km (0.04 R)
- M27: 3,919,763 km (0.084 R)
- M28: 4,088,211 km (0.057 R)
- M29: 4,370,801 km (0.096 R)
- M30: 4,493,920 km (0.116 R)
- M31: 4,691,389 km (0.088 R)
- M32: 4,817,500 km (0.066 R)
- M33: 5,019,607 km (0.113 R)
- M34: 5,127,168 km (0.115 R)
- M35: 5,213,785 km (0.105 R)
- M36: 5,432,347 km (0.119 R)
- M37: 5,654,052 km (0.112 R)
- M38: 5,822,349 km (0.074 R)
- M39: 6,072,178 km (0.075 R)
- M40: 6,163,881 km (0.029 R)
- M41: 6,348,784 km (0.091 R)
- M42: 6,500,327 km (0.119 R)
- M43: 6,724,125 km (0.094 R)
- M44: 6,819,120 km (0.095 R)
- M45: 6,914,563 km (0.069 R)
- M46: 7,022,423 km (0.119 R)
- M47: 7,386,245 km (0.096 R)
- M48: 7,496,499 km (0.099 R)
- M49: 7,681,701 km (0.112 R)
- M50: 7,781,034 km (0.109 R)
- M51: 7,918,365 km (0.072 R)
- M52: 8,107,008 km (0.065 R)
- M53: 8,233,568 km (0.081 R)
- M54: 8,630,152 km (0.031 R)
Planet 4 - Gas Giant
Semi-Major Axis: 2.05 AU
Status: Outer (Cold)
Composition: Hydrogen/Helium Atmosphere
Physical Data
Mass: 992.5
Radius: 12.9
Gravity: 5.96 G
Time & Orbit
Eccentricity (e): 0.234
Orbit Range: 1.57 AU - 2.53 AU
Year: 2063 Days
Day: 6.9 Hours
Environment
Temp: -192 °C
Axial Tilt: 46 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (70)
Outer Limit: 88,537,370 km
- M1: 171,439 km (0.109 R)
- M2: 273,016 km (0.093 R)
- M3: 389,553 km (0.117 R)
- M4: 523,144 km (0.111 R)
- M5: 754,272 km (0.061 R)
- M6: 921,523 km (0.118 R)
- M7: 1,020,407 km (0.059 R)
- M8: 1,208,003 km (0.12 R)
- M9: 1,306,289 km (0.084 R)
- M10: 1,418,936 km (0.093 R)
- M11: 1,618,350 km (0.094 R)
- M12: 1,993,392 km (0.081 R)
- M13: 2,299,618 km (0.09 R)
- M14: 2,493,647 km (0.049 R)
- M15: 2,707,572 km (0.059 R)
- M16: 3,215,157 km (0.076 R)
- M17: 3,354,583 km (0.079 R)
- M18: 3,527,817 km (0.054 R)
- M19: 3,704,043 km (0.119 R)
- M20: 3,850,350 km (0.092 R)
- M21: 4,098,682 km (0.104 R)
- M22: 4,267,279 km (0.118 R)
- M23: 4,663,714 km (0.092 R)
- M24: 4,804,336 km (0.098 R)
- M25: 4,910,849 km (0.052 R)
- M26: 5,289,781 km (0.102 R)
- M27: 5,418,285 km (0.116 R)
- M28: 5,809,933 km (0.11 R)
- M29: 6,018,921 km (0.031 R)
- M30: 6,660,396 km (0.109 R)
- M31: 6,919,201 km (0.098 R)
- M32: 7,221,987 km (0.041 R)
- M33: 7,303,518 km (0.103 R)
- M34: 7,778,042 km (0.076 R)
- M35: 7,882,461 km (0.105 R)
- M36: 8,326,468 km (0.082 R)
- M37: 8,454,823 km (0.111 R)
- M38: 8,583,926 km (0.032 R)
- M39: 8,843,927 km (0.107 R)
- M40: 9,327,577 km (0.11 R)
- M41: 9,460,869 km (0.102 R)
- M42: 9,887,522 km (0.074 R)
- M43: 10,137,500 km (0.049 R)
- M44: 10,389,423 km (0.064 R)
- M45: 10,574,026 km (0.12 R)
- M46: 11,157,907 km (0.095 R)
- M47: 11,584,710 km (0.108 R)
- M48: 11,680,452 km (0.102 R)
- M49: 11,872,386 km (0.084 R)
- M50: 12,186,691 km (0.068 R)
- M51: 12,405,852 km (0.1 R)
- M52: 13,270,528 km (0.064 R)
- M53: 13,496,122 km (0.07 R)
- M54: 14,052,775 km (0.106 R)
- M55: 14,180,382 km (0.053 R)
- M56: 14,385,182 km (0.054 R)
- M57: 14,565,297 km (0.102 R)
- M58: 15,794,094 km (0.115 R)
- M59: 16,033,152 km (0.059 R)
- M60: 16,273,406 km (0.117 R)
- M61: 16,676,572 km (0.119 R)
- M62: 16,865,814 km (0.108 R)
- M63: 16,974,272 km (0.069 R)
- M64: 17,191,937 km (0.084 R)
- M65: 17,575,057 km (0.118 R)
- M66: 17,933,344 km (0.069 R)
- M67: 18,071,872 km (0.078 R)
- M68: 18,349,824 km (0.109 R)
- M69: 18,461,424 km (0.085 R)
- M70: 18,797,571 km (0.097 R)
Planet 5 - Gas Giant
Semi-Major Axis: 2.15 AU
Status: Outer (Cold)
Composition: Hydrogen/Helium Atmosphere
Physical Data
Mass: 542.1
Radius: 12.4
Gravity: 3.53 G
Time & Orbit
Eccentricity (e): 0.197
Orbit Range: 1.73 AU - 2.57 AU
Year: 2216 Days
Day: 13.7 Hours
Environment
Temp: -213 °C
Axial Tilt: 1 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (61)
Outer Limit: 88,537,370 km
- M1: 154,684 km (0.116 R)
- M2: 264,040 km (0.116 R)
- M3: 396,434 km (0.09 R)
- M4: 617,690 km (0.105 R)
- M5: 873,502 km (0.049 R)
- M6: 978,669 km (0.113 R)
- M7: 1,154,596 km (0.059 R)
- M8: 1,261,559 km (0.065 R)
- M9: 1,361,939 km (0.103 R)
- M10: 1,581,848 km (0.061 R)
- M11: 1,712,896 km (0.052 R)
- M12: 1,951,205 km (0.118 R)
- M13: 2,092,425 km (0.106 R)
- M14: 2,237,236 km (0.076 R)
- M15: 2,385,338 km (0.079 R)
- M16: 2,770,253 km (0.1 R)
- M17: 2,849,690 km (0.095 R)
- M18: 3,024,420 km (0.054 R)
- M19: 3,161,302 km (0.049 R)
- M20: 3,300,279 km (0.091 R)
- M21: 3,584,515 km (0.094 R)
- M22: 3,714,964 km (0.063 R)
- M23: 3,802,927 km (0.106 R)
- M24: 4,040,938 km (0.046 R)
- M25: 4,453,529 km (0.062 R)
- M26: 4,657,131 km (0.039 R)
- M27: 4,960,217 km (0.069 R)
- M28: 5,385,673 km (0.079 R)
- M29: 5,518,965 km (0.086 R)
- M30: 6,149,669 km (0.106 R)
- M31: 6,394,411 km (0.108 R)
- M32: 6,553,434 km (0.108 R)
- M33: 6,642,295 km (0.078 R)
- M34: 7,074,783 km (0.092 R)
- M35: 7,312,942 km (0.025 R)
- M36: 7,423,645 km (0.112 R)
- M37: 7,665,694 km (0.12 R)
- M38: 8,368,654 km (0.055 R)
- M39: 8,659,622 km (0.111 R)
- M40: 8,914,537 km (0.096 R)
- M41: 9,231,535 km (0.112 R)
- M42: 9,411,651 km (0.034 R)
- M43: 9,491,985 km (0.105 R)
- M44: 10,287,696 km (0.08 R)
- M45: 10,536,926 km (0.084 R)
- M46: 10,725,120 km (0.075 R)
- M47: 10,977,791 km (0.112 R)
- M48: 11,275,042 km (0.105 R)
- M49: 11,899,463 km (0.102 R)
- M50: 11,986,380 km (0.055 R)
- M51: 12,424,552 km (0.096 R)
- M52: 12,712,229 km (0.086 R)
- M53: 13,226,696 km (0.075 R)
- M54: 13,633,901 km (0.115 R)
- M55: 14,275,826 km (0.108 R)
- M56: 14,484,215 km (0.049 R)
- M57: 14,577,116 km (0.075 R)
- M58: 14,810,339 km (0.112 R)
- M59: 14,927,474 km (0.112 R)
- M60: 15,827,455 km (0.11 R)
- M61: 16,067,260 km (0.033 R)
Planet 6 - Gas Giant
Semi-Major Axis: 2.34 AU
Status: Outer (Cold)
Composition: Hydrogen/Helium Atmosphere
Physical Data
Mass: 175.9
Radius: 12.3
Gravity: 1.16 G
Time & Orbit
Eccentricity (e): 0.221
Orbit Range: 1.82 AU - 2.86 AU
Year: 2516 Days
Day: 11.1 Hours
Environment
Temp: -205 °C
Axial Tilt: 6.5 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (57)
Outer Limit: 88,537,370 km
- M1: 170,691 km (0.1 R)
- M2: 370,255 km (0.112 R)
- M3: 815,009 km (0.082 R)
- M4: 920,326 km (0.119 R)
- M5: 1,083,837 km (0.108 R)
- M6: 1,225,356 km (0.064 R)
- M7: 1,306,737 km (0.109 R)
- M8: 1,398,590 km (0.089 R)
- M9: 1,484,160 km (0.109 R)
- M10: 1,624,782 km (0.102 R)
- M11: 1,825,692 km (0.068 R)
- M12: 1,948,512 km (0.08 R)
- M13: 2,212,403 km (0.118 R)
- M14: 2,415,557 km (0.111 R)
- M15: 2,529,999 km (0.116 R)
- M16: 2,884,247 km (0.087 R)
- M17: 3,028,310 km (0.115 R)
- M18: 3,174,766 km (0.065 R)
- M19: 3,300,578 km (0.09 R)
- M20: 3,393,179 km (0.111 R)
- M21: 3,712,122 km (0.078 R)
- M22: 3,832,697 km (0.055 R)
- M23: 4,090,455 km (0.113 R)
- M24: 4,661,769 km (0.103 R)
- M25: 4,857,892 km (0.077 R)
- M26: 5,137,041 km (0.111 R)
- M27: 6,020,417 km (0.079 R)
- M28: 6,105,538 km (0.03 R)
- M29: 6,205,619 km (0.093 R)
- M30: 6,508,704 km (0.111 R)
- M31: 6,743,124 km (0.099 R)
- M32: 6,935,507 km (0.051 R)
- M33: 7,371,435 km (0.109 R)
- M34: 7,600,320 km (0.1 R)
- M35: 7,677,213 km (0.113 R)
- M36: 8,018,446 km (0.115 R)
- M37: 8,159,517 km (0.108 R)
- M38: 8,254,063 km (0.059 R)
- M39: 8,396,480 km (0.096 R)
- M40: 8,716,021 km (0.074 R)
- M41: 8,974,526 km (0.116 R)
- M42: 9,137,288 km (0.108 R)
- M43: 9,219,118 km (0.052 R)
- M44: 9,334,159 km (0.106 R)
- M45: 9,499,166 km (0.077 R)
- M46: 9,882,435 km (0.09 R)
- M47: 10,033,679 km (0.097 R)
- M48: 10,304,750 km (0.104 R)
- M49: 10,458,238 km (0.037 R)
- M50: 10,543,808 km (0.078 R)
- M51: 10,664,084 km (0.087 R)
- M52: 11,149,679 km (0.041 R)
- M53: 11,254,697 km (0.117 R)
- M54: 11,412,822 km (0.039 R)
- M55: 11,554,042 km (0.095 R)
- M56: 11,731,315 km (0.069 R)
- M57: 12,034,850 km (0.053 R)
Planet 7 - Ice Giant
Semi-Major Axis: 10.4 AU
Status: Outer (Cold)
Composition: Methane/Ammonia Ices
Physical Data
Mass: 776.7
Radius: 6.7
Gravity: 17.3 G
Time & Orbit
Eccentricity (e): 0.136
Orbit Range: 8.99 AU - 11.81 AU
Year: 23575 Days
Day: 23.1 Hours
Environment
Temp: -233 °C
Axial Tilt: 42.6 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (96)
Outer Limit: 88,537,370 km
- M1: 135,087 km (0.082 R)
- M2: 391,797 km (0.073 R)
- M3: 872,006 km (0.08 R)
- M4: 1,013,526 km (0.109 R)
- M5: 1,193,342 km (0.11 R)
- M6: 1,351,018 km (0.08 R)
- M7: 1,448,855 km (0.101 R)
- M8: 2,047,396 km (0.101 R)
- M9: 2,392,369 km (0.086 R)
- M10: 2,880,507 km (0.108 R)
- M11: 3,050,001 km (0.107 R)
- M12: 3,443,294 km (0.1 R)
- M13: 3,806,368 km (0.095 R)
- M14: 5,222,013 km (0.115 R)
- M15: 5,481,116 km (0.068 R)
- M16: 6,174,203 km (0.039 R)
- M17: 6,838,268 km (0.119 R)
- M18: 7,293,644 km (0.057 R)
- M19: 7,641,609 km (0.103 R)
- M20: 10,744,418 km (0.111 R)
- M21: 11,473,409 km (0.104 R)
- M22: 11,540,429 km (0.099 R)
- M23: 12,562,032 km (0.049 R)
- M24: 12,631,296 km (0.08 R)
- M25: 12,909,099 km (0.086 R)
- M26: 13,825,835 km (0.112 R)
- M27: 14,112,016 km (0.092 R)
- M28: 14,328,035 km (0.106 R)
- M29: 14,400,291 km (0.116 R)
- M30: 14,836,369 km (0.044 R)
- M31: 15,424,438 km (0.119 R)
- M32: 15,795,890 km (0.103 R)
- M33: 16,396,375 km (0.093 R)
- M34: 17,619,488 km (0.026 R)
- M35: 19,030,345 km (0.034 R)
- M36: 19,428,724 km (0.112 R)
- M37: 20,314,643 km (0.102 R)
- M38: 20,640,168 km (0.086 R)
- M39: 22,125,824 km (0.115 R)
- M40: 22,628,623 km (0.099 R)
- M41: 22,965,966 km (0.113 R)
- M42: 23,135,311 km (0.109 R)
- M43: 23,560,318 km (0.077 R)
- M44: 24,418,112 km (0.057 R)
- M45: 25,111,798 km (0.119 R)
- M46: 25,198,864 km (0.086 R)
- M47: 25,286,229 km (0.047 R)
- M48: 25,899,730 km (0.056 R)
- M49: 28,584,563 km (0.11 R)
- M50: 28,857,878 km (0.05 R)
- M51: 29,315,348 km (0.05 R)
- M52: 31,262,813 km (0.049 R)
- M53: 31,638,454 km (0.045 R)
- M54: 31,921,194 km (0.08 R)
- M55: 32,394,222 km (0.115 R)
- M56: 32,679,206 km (0.115 R)
- M57: 32,774,350 km (0.095 R)
- M58: 34,019,902 km (0.11 R)
- M59: 34,212,883 km (0.086 R)
- M60: 36,853,884 km (0.064 R)
- M61: 37,052,101 km (0.045 R)
- M62: 37,449,583 km (0.104 R)
- M63: 38,048,573 km (0.116 R)
- M64: 38,550,025 km (0.11 R)
- M65: 39,458,383 km (0.108 R)
- M66: 40,782,624 km (0.093 R)
- M67: 40,885,098 km (0.09 R)
- M68: 41,193,120 km (0.109 R)
- M69: 42,018,003 km (0.075 R)
- M70: 42,225,046 km (0.114 R)
- M71: 42,952,541 km (0.062 R)
- M72: 43,998,978 km (0.066 R)
- M73: 44,103,995 km (0.111 R)
- M74: 44,630,879 km (0.096 R)
- M75: 45,371,837 km (0.082 R)
- M76: 47,080,694 km (0.065 R)
- M77: 47,619,097 km (0.073 R)
- M78: 49,792,754 km (0.062 R)
- M79: 49,902,259 km (0.111 R)
- M80: 50,011,915 km (0.043 R)
- M81: 50,231,375 km (0.106 R)
- M82: 51,112,356 km (0.09 R)
- M83: 57,650,831 km (0.101 R)
- M84: 60,549,140 km (0.119 R)
- M85: 62,310,804 km (0.104 R)
- M86: 66,727,681 km (0.097 R)
- M87: 69,891,228 km (0.045 R)
- M88: 71,614,745 km (0.116 R)
- M89: 72,233,781 km (0.09 R)
- M90: 73,103,243 km (0.042 R)
- M91: 75,984,648 km (0.095 R)
- M92: 79,414,179 km (0.09 R)
- M93: 81,212,196 km (0.108 R)
- M94: 83,153,528 km (0.083 R)
- M95: 84,717,723 km (0.091 R)
- M96: 86,554,635 km (0.212 R)
Kuiper Belt
Range: 30 - 48 AU
Composition
Type: Dwarf Planets/TNOs (Ices)
Reservoir of dwarf planets and volatile ices.
Outer System
Oort Cloud
Range: 384 - 14,406 AU
Composition
Type: Cometary Reservoir
System's final boundary, containing trillions of icy planetesimals.