Star System Generated (Seed: 1766641296)
Star Details
Spectral Class: M1V
Temperature: 3,483 K
Mass: 0.32 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: 11.3 AU
Planetary System (6 Planets)
Planet 1 - Gas Giant
Semi-Major Axis: 1.45 AU
Status: Outer (Cold)
Composition: Hydrogen/Helium Atmosphere
Physical Data
Mass: 448.1
Radius: 8.6
Gravity: 6.06 G
Time & Orbit
Eccentricity (e): 0.212
Orbit Range: 1.14 AU - 1.76 AU
Year: 1127 Days
Day: 7 Hours
Environment
Temp: -176 °C
Axial Tilt: 134 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (61)
Outer Limit: 71,505,621 km
- M1: 107,860 km (0.109 R)
- M2: 172,486 km (0.109 R)
- M3: 237,711 km (0.103 R)
- M4: 336,595 km (0.068 R)
- M5: 424,409 km (0.08 R)
- M6: 491,279 km (0.118 R)
- M7: 551,867 km (0.084 R)
- M8: 637,137 km (0.099 R)
- M9: 710,141 km (0.116 R)
- M10: 846,425 km (0.12 R)
- M11: 991,834 km (0.101 R)
- M12: 1,104,631 km (0.067 R)
- M13: 1,243,158 km (0.074 R)
- M14: 1,606,681 km (0.077 R)
- M15: 1,919,191 km (0.111 R)
- M16: 2,002,517 km (0.096 R)
- M17: 2,069,986 km (0.116 R)
- M18: 2,268,353 km (0.098 R)
- M19: 2,383,244 km (0.11 R)
- M20: 2,890,829 km (0.075 R)
- M21: 3,015,594 km (0.113 R)
- M22: 3,270,808 km (0.096 R)
- M23: 3,330,647 km (0.117 R)
- M24: 3,615,033 km (0.102 R)
- M25: 3,749,671 km (0.113 R)
- M26: 3,854,389 km (0.08 R)
- M27: 4,066,968 km (0.116 R)
- M28: 4,196,370 km (0.074 R)
- M29: 4,316,048 km (0.055 R)
- M30: 4,370,951 km (0.067 R)
- M31: 4,426,003 km (0.107 R)
- M32: 4,840,688 km (0.09 R)
- M33: 4,989,388 km (0.115 R)
- M34: 5,174,590 km (0.103 R)
- M35: 5,326,582 km (0.114 R)
- M36: 5,385,523 km (0.114 R)
- M37: 5,503,855 km (0.106 R)
- M38: 5,683,223 km (0.115 R)
- M39: 5,864,386 km (0.116 R)
- M40: 6,023,109 km (0.116 R)
- M41: 6,096,712 km (0.067 R)
- M42: 6,382,144 km (0.078 R)
- M43: 6,595,770 km (0.073 R)
- M44: 6,811,789 km (0.104 R)
- M45: 6,927,129 km (0.115 R)
- M46: 6,991,606 km (0.118 R)
- M47: 7,185,784 km (0.106 R)
- M48: 7,434,565 km (0.099 R)
- M49: 7,752,760 km (0.066 R)
- M50: 7,859,723 km (0.115 R)
- M51: 7,926,892 km (0.102 R)
- M52: 8,102,370 km (0.11 R)
- M53: 8,183,901 km (0.104 R)
- M54: 8,292,958 km (0.119 R)
- M55: 8,457,366 km (0.076 R)
- M56: 8,817,448 km (0.091 R)
- M57: 8,943,110 km (0.081 R)
- M58: 9,224,803 km (0.075 R)
- M59: 9,495,126 km (0.094 R)
- M60: 9,581,145 km (0.083 R)
- M61: 9,681,675 km (0.084 R)
Planet 2 - Gas Giant
Semi-Major Axis: 1.53 AU
Status: Outer (Cold)
Composition: Hydrogen/Helium Atmosphere
Physical Data
Mass: 99.8
Radius: 8.8
Gravity: 1.29 G
Time & Orbit
Eccentricity (e): 0.015
Orbit Range: 1.51 AU - 1.55 AU
Year: 1222 Days
Day: 9.7 Hours
Environment
Temp: -184 °C
Axial Tilt: 18.2 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (52)
Outer Limit: 71,505,621 km
- M1: 112,946 km (0.108 R)
- M2: 199,115 km (0.029 R)
- M3: 299,495 km (0.106 R)
- M4: 379,081 km (0.12 R)
- M5: 456,872 km (0.115 R)
- M6: 548,426 km (0.065 R)
- M7: 622,776 km (0.118 R)
- M8: 791,223 km (0.05 R)
- M9: 937,081 km (0.101 R)
- M10: 1,003,802 km (0.107 R)
- M11: 1,121,984 km (0.11 R)
- M12: 1,183,020 km (0.104 R)
- M13: 1,276,668 km (0.112 R)
- M14: 1,351,168 km (0.084 R)
- M15: 1,410,858 km (0.11 R)
- M16: 1,465,910 km (0.106 R)
- M17: 1,521,710 km (0.119 R)
- M18: 1,670,410 km (0.076 R)
- M19: 1,969,755 km (0.108 R)
- M20: 2,094,221 km (0.108 R)
- M21: 2,176,649 km (0.066 R)
- M22: 2,253,692 km (0.064 R)
- M23: 2,318,617 km (0.095 R)
- M24: 2,410,470 km (0.098 R)
- M25: 2,510,402 km (0.041 R)
- M26: 2,652,669 km (0.105 R)
- M27: 2,930,921 km (0.097 R)
- M28: 3,009,161 km (0.059 R)
- M29: 3,087,999 km (0.106 R)
- M30: 3,211,417 km (0.114 R)
- M31: 3,366,102 km (0.077 R)
- M32: 3,545,769 km (0.1 R)
- M33: 3,675,171 km (0.092 R)
- M34: 3,775,102 km (0.113 R)
- M35: 3,860,373 km (0.071 R)
- M36: 3,930,534 km (0.117 R)
- M37: 3,985,586 km (0.1 R)
- M38: 4,264,138 km (0.104 R)
- M39: 4,401,768 km (0.101 R)
- M40: 4,549,122 km (0.058 R)
- M41: 4,639,928 km (0.118 R)
- M42: 4,890,803 km (0.057 R)
- M43: 4,950,044 km (0.096 R)
- M44: 5,009,434 km (0.078 R)
- M45: 5,137,640 km (0.117 R)
- M46: 5,232,335 km (0.115 R)
- M47: 5,484,707 km (0.034 R)
- M48: 5,661,083 km (0.106 R)
- M49: 5,839,403 km (0.102 R)
- M50: 5,947,263 km (0.096 R)
- M51: 6,028,645 km (0.12 R)
- M52: 6,155,952 km (0.11 R)
Planet 3 - Gas Giant
Semi-Major Axis: 1.69 AU
Status: Outer (Cold)
Composition: Hydrogen/Helium Atmosphere
Physical Data
Mass: 231.9
Radius: 8
Gravity: 3.62 G
Time & Orbit
Eccentricity (e): 0.189
Orbit Range: 1.37 AU - 2.01 AU
Year: 1419 Days
Day: 10.7 Hours
Environment
Temp: -190 °C
Axial Tilt: 16.9 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (45)
Outer Limit: 71,505,621 km
- M1: 108,458 km (0.069 R)
- M2: 166,054 km (0.075 R)
- M3: 330,163 km (0.11 R)
- M4: 387,907 km (0.108 R)
- M5: 611,257 km (0.07 R)
- M6: 674,686 km (0.113 R)
- M7: 808,876 km (0.097 R)
- M8: 903,272 km (0.063 R)
- M9: 1,039,556 km (0.094 R)
- M10: 1,409,661 km (0.12 R)
- M11: 1,561,503 km (0.094 R)
- M12: 1,944,473 km (0.106 R)
- M13: 2,237,984 km (0.063 R)
- M14: 2,450,264 km (0.094 R)
- M15: 2,740,334 km (0.105 R)
- M16: 2,821,416 km (0.069 R)
- M17: 2,949,172 km (0.084 R)
- M18: 3,023,074 km (0.07 R)
- M19: 3,295,940 km (0.079 R)
- M20: 3,363,110 km (0.054 R)
- M21: 3,450,026 km (0.101 R)
- M22: 3,755,206 km (0.099 R)
- M23: 3,916,173 km (0.084 R)
- M24: 3,987,382 km (0.12 R)
- M25: 4,297,199 km (0.111 R)
- M26: 4,370,651 km (0.088 R)
- M27: 4,754,968 km (0.087 R)
- M28: 5,006,143 km (0.108 R)
- M29: 5,250,436 km (0.091 R)
- M30: 5,855,261 km (0.119 R)
- M31: 6,018,622 km (0.11 R)
- M32: 6,077,413 km (0.095 R)
- M33: 6,481,926 km (0.099 R)
- M34: 6,639,004 km (0.083 R)
- M35: 6,736,243 km (0.084 R)
- M36: 6,993,700 km (0.088 R)
- M37: 7,254,450 km (0.065 R)
- M38: 7,493,208 km (0.057 R)
- M39: 7,581,770 km (0.071 R)
- M40: 8,081,726 km (0.117 R)
- M41: 8,355,490 km (0.06 R)
- M42: 8,579,139 km (0.067 R)
- M43: 8,685,204 km (0.094 R)
- M44: 8,805,031 km (0.1 R)
- M45: 8,871,752 km (0.103 R)
Planet 4 - Gas Giant
Semi-Major Axis: 4.23 AU
Status: Outer (Cold)
Composition: Hydrogen/Helium Atmosphere
Physical Data
Mass: 324.2
Radius: 10.5
Gravity: 2.94 G
Time & Orbit
Eccentricity (e): 0.134
Orbit Range: 3.66 AU - 4.8 AU
Year: 5617 Days
Day: 7.3 Hours
Environment
Temp: -211 °C
Axial Tilt: 25.1 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (77)
Outer Limit: 71,505,621 km
- M1: 172,486 km (0.119 R)
- M2: 296,204 km (0.094 R)
- M3: 380,128 km (0.057 R)
- M4: 836,551 km (0.094 R)
- M5: 906,713 km (0.101 R)
- M6: 979,118 km (0.101 R)
- M7: 1,208,751 km (0.087 R)
- M8: 1,316,461 km (0.116 R)
- M9: 1,455,886 km (0.111 R)
- M10: 1,734,587 km (0.103 R)
- M11: 1,903,932 km (0.107 R)
- M12: 2,014,635 km (0.095 R)
- M13: 2,225,867 km (0.102 R)
- M14: 2,496,040 km (0.05 R)
- M15: 2,705,777 km (0.084 R)
- M16: 2,812,739 km (0.062 R)
- M17: 2,957,700 km (0.11 R)
- M18: 3,105,203 km (0.088 R)
- M19: 3,255,250 km (0.083 R)
- M20: 3,446,137 km (0.111 R)
- M21: 3,680,108 km (0.039 R)
- M22: 3,819,084 km (0.088 R)
- M23: 4,225,541 km (0.057 R)
- M24: 4,497,361 km (0.101 R)
- M25: 5,595,409 km (0.07 R)
- M26: 5,709,702 km (0.099 R)
- M27: 5,847,781 km (0.102 R)
- M28: 5,940,531 km (0.087 R)
- M29: 6,010,394 km (0.107 R)
- M30: 6,675,655 km (0.051 R)
- M31: 7,364,254 km (0.065 R)
- M32: 7,691,724 km (0.082 R)
- M33: 8,256,606 km (0.114 R)
- M34: 8,835,101 km (0.1 R)
- M35: 8,995,170 km (0.077 R)
- M36: 9,590,121 km (0.062 R)
- M37: 9,864,932 km (0.048 R)
- M38: 10,619,654 km (0.101 R)
- M39: 10,961,036 km (0.063 R)
- M40: 11,947,784 km (0.099 R)
- M41: 12,065,816 km (0.09 R)
- M42: 12,451,928 km (0.099 R)
- M43: 12,571,607 km (0.099 R)
- M44: 13,205,902 km (0.067 R)
- M45: 13,389,009 km (0.061 R)
- M46: 13,603,832 km (0.078 R)
- M47: 14,036,768 km (0.064 R)
- M48: 14,254,882 km (0.074 R)
- M49: 14,505,608 km (0.111 R)
- M50: 14,600,004 km (0.098 R)
- M51: 14,884,390 km (0.11 R)
- M52: 14,979,684 km (0.113 R)
- M53: 15,587,500 km (0.119 R)
- M54: 15,748,766 km (0.117 R)
- M55: 15,910,631 km (0.106 R)
- M56: 16,072,945 km (0.12 R)
- M57: 16,301,231 km (0.116 R)
- M58: 17,727,048 km (0.083 R)
- M59: 17,828,027 km (0.098 R)
- M60: 17,962,964 km (0.098 R)
- M61: 18,098,201 km (0.09 R)
- M62: 18,233,886 km (0.079 R)
- M63: 18,369,871 km (0.085 R)
- M64: 19,365,444 km (0.117 R)
- M65: 19,747,667 km (0.065 R)
- M66: 20,413,826 km (0.111 R)
- M67: 20,802,930 km (0.059 R)
- M68: 20,909,444 km (0.092 R)
- M69: 21,588,319 km (0.027 R)
- M70: 21,876,295 km (0.089 R)
- M71: 21,984,753 km (0.093 R)
- M72: 22,165,617 km (0.051 R)
- M73: 22,894,458 km (0.025 R)
- M74: 23,041,214 km (0.042 R)
- M75: 23,188,119 km (0.034 R)
- M76: 23,483,126 km (0.096 R)
- M77: 24,039,630 km (0.049 R)
Planet 5 - Ice Giant
Semi-Major Axis: 6.25 AU
Status: Outer (Cold)
Composition: Methane/Ammonia Ices
Physical Data
Mass: 793.8
Radius: 3.1
Gravity: 82.6 G
Time & Orbit
Eccentricity (e): 0.032
Orbit Range: 6.05 AU - 6.45 AU
Year: 10089 Days
Day: 21.4 Hours
Environment
Temp: -225 °C
Axial Tilt: 27.8 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (98)
Outer Limit: 71,505,621 km
- M1: 150,795 km (0.076 R)
- M2: 328,218 km (0.114 R)
- M3: 355,744 km (0.073 R)
- M4: 384,167 km (0.099 R)
- M5: 458,667 km (0.114 R)
- M6: 604,375 km (0.107 R)
- M7: 745,446 km (0.09 R)
- M8: 838,795 km (0.098 R)
- M9: 955,781 km (0.108 R)
- M10: 1,404,874 km (0.114 R)
- M11: 1,735,784 km (0.097 R)
- M12: 2,301,862 km (0.117 R)
- M13: 2,717,894 km (0.108 R)
- M14: 3,338,276 km (0.098 R)
- M15: 3,648,393 km (0.1 R)
- M16: 4,098,084 km (0.109 R)
- M17: 4,130,846 km (0.109 R)
- M18: 4,770,078 km (0.119 R)
- M19: 4,804,635 km (0.117 R)
- M20: 4,908,605 km (0.058 R)
- M21: 5,225,005 km (0.117 R)
- M22: 5,260,460 km (0.113 R)
- M23: 6,326,344 km (0.025 R)
- M24: 6,786,358 km (0.119 R)
- M25: 6,981,134 km (0.074 R)
- M26: 7,256,993 km (0.05 R)
- M27: 8,188,239 km (0.083 R)
- M28: 9,070,717 km (0.106 R)
- M29: 10,878,458 km (0.052 R)
- M30: 10,969,413 km (0.115 R)
- M31: 11,060,668 km (0.091 R)
- M32: 11,197,849 km (0.102 R)
- M33: 11,752,708 km (0.114 R)
- M34: 11,939,705 km (0.118 R)
- M35: 12,744,991 km (0.053 R)
- M36: 13,665,616 km (0.077 R)
- M37: 13,812,970 km (0.114 R)
- M38: 15,162,343 km (0.096 R)
- M39: 15,518,984 km (0.12 R)
- M40: 15,775,395 km (0.095 R)
- M41: 16,292,555 km (0.054 R)
- M42: 16,344,465 km (0.104 R)
- M43: 16,920,267 km (0.118 R)
- M44: 17,025,734 km (0.114 R)
- M45: 17,449,544 km (0.071 R)
- M46: 18,415,647 km (0.107 R)
- M47: 18,632,714 km (0.073 R)
- M48: 19,069,390 km (0.107 R)
- M49: 19,179,045 km (0.09 R)
- M50: 19,619,910 km (0.1 R)
- M51: 20,008,266 km (0.054 R)
- M52: 21,473,278 km (0.12 R)
- M53: 21,988,344 km (0.089 R)
- M54: 22,334,065 km (0.077 R)
- M55: 23,381,848 km (0.12 R)
- M56: 23,793,541 km (0.082 R)
- M57: 24,089,147 km (0.108 R)
- M58: 24,207,778 km (0.083 R)
- M59: 25,103,121 km (0.098 R)
- M60: 26,619,595 km (0.107 R)
- M61: 28,165,390 km (0.031 R)
- M62: 28,290,304 km (0.075 R)
- M63: 29,106,659 km (0.12 R)
- M64: 29,803,486 km (0.105 R)
- M65: 30,505,848 km (0.069 R)
- M66: 30,762,558 km (0.043 R)
- M67: 32,710,921 km (0.071 R)
- M68: 32,973,764 km (0.067 R)
- M69: 33,039,438 km (0.05 R)
- M70: 34,098,291 km (0.113 R)
- M71: 34,431,446 km (0.048 R)
- M72: 34,565,037 km (0.052 R)
- M73: 34,698,777 km (0.091 R)
- M74: 34,765,648 km (0.039 R)
- M75: 34,899,687 km (0.081 R)
- M76: 35,168,215 km (0.089 R)
- M77: 35,774,835 km (0.082 R)
- M78: 35,842,453 km (0.082 R)
- M79: 37,340,825 km (0.075 R)
- M80: 37,409,341 km (0.09 R)
- M81: 38,166,606 km (0.095 R)
- M82: 38,789,980 km (0.071 R)
- M83: 40,046,752 km (0.077 R)
- M84: 40,821,369 km (0.097 R)
- M85: 41,175,019 km (0.049 R)
- M86: 41,671,983 km (0.117 R)
- M87: 42,099,384 km (0.047 R)
- M88: 42,313,758 km (0.047 R)
- M89: 42,886,867 km (0.086 R)
- M90: 44,694,757 km (0.107 R)
- M91: 44,840,466 km (0.064 R)
- M92: 45,278,488 km (0.111 R)
- M93: 45,864,762 km (0.072 R)
- M94: 46,085,270 km (0.047 R)
- M95: 46,158,722 km (0.097 R)
- M96: 49,736,056 km (0.084 R)
- M97: 50,038,244 km (0.107 R)
- M98: 50,644,265 km (0.085 R)
Planet 6 - Ice Giant
Semi-Major Axis: 9.88 AU
Status: Outer (Cold)
Composition: Methane/Ammonia Ices
Physical Data
Mass: 565.6
Radius: 6.3
Gravity: 14.25 G
Time & Orbit
Eccentricity (e): 0.211
Orbit Range: 7.8 AU - 11.96 AU
Year: 20052 Days
Day: 18.9 Hours
Environment
Temp: -231 °C
Axial Tilt: 0.8 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (95)
Outer Limit: 71,505,621 km
- M1: 172,187 km (0.116 R)
- M2: 449,542 km (0.1 R)
- M3: 546,032 km (0.084 R)
- M4: 586,723 km (0.115 R)
- M5: 760,256 km (0.096 R)
- M6: 1,076,057 km (0.099 R)
- M7: 1,429,707 km (0.115 R)
- M8: 1,604,437 km (0.078 R)
- M9: 1,786,348 km (0.113 R)
- M10: 2,543,313 km (0.077 R)
- M11: 2,648,780 km (0.088 R)
- M12: 3,047,458 km (0.097 R)
- M13: 3,159,507 km (0.068 R)
- M14: 4,063,078 km (0.103 R)
- M15: 4,479,409 km (0.087 R)
- M16: 4,521,745 km (0.08 R)
- M17: 4,564,231 km (0.071 R)
- M18: 5,808,137 km (0.078 R)
- M19: 5,854,363 km (0.042 R)
- M20: 7,348,547 km (0.105 R)
- M21: 8,008,572 km (0.093 R)
- M22: 8,793,363 km (0.107 R)
- M23: 10,661,092 km (0.051 R)
- M24: 11,175,410 km (0.106 R)
- M25: 11,406,688 km (0.069 R)
- M26: 11,756,448 km (0.069 R)
- M27: 12,646,106 km (0.116 R)
- M28: 13,495,972 km (0.115 R)
- M29: 13,557,307 km (0.089 R)
- M30: 14,114,260 km (0.102 R)
- M31: 14,239,025 km (0.094 R)
- M32: 14,301,556 km (0.091 R)
- M33: 14,931,663 km (0.054 R)
- M34: 15,506,567 km (0.117 R)
- M35: 17,141,373 km (0.113 R)
- M36: 18,012,780 km (0.069 R)
- M37: 18,283,852 km (0.09 R)
- M38: 18,419,836 km (0.086 R)
- M39: 18,624,636 km (0.066 R)
- M40: 18,693,002 km (0.036 R)
- M41: 19,659,255 km (0.12 R)
- M42: 20,359,373 km (0.111 R)
- M43: 20,641,664 km (0.067 R)
- M44: 21,067,569 km (0.077 R)
- M45: 22,946,668 km (0.078 R)
- M46: 23,535,485 km (0.094 R)
- M47: 23,980,389 km (0.108 R)
- M48: 26,016,566 km (0.096 R)
- M49: 26,322,942 km (0.071 R)
- M50: 28,029,106 km (0.053 R)
- M51: 28,186,034 km (0.103 R)
- M52: 29,054,150 km (0.075 R)
- M53: 30,171,497 km (0.119 R)
- M54: 31,303,055 km (0.108 R)
- M55: 32,613,084 km (0.108 R)
- M56: 33,108,851 km (0.097 R)
- M57: 34,024,390 km (0.063 R)
- M58: 34,611,412 km (0.068 R)
- M59: 36,136,114 km (0.12 R)
- M60: 36,649,085 km (0.03 R)
- M61: 36,734,804 km (0.103 R)
- M62: 36,992,561 km (0.105 R)
- M63: 38,463,707 km (0.101 R)
- M64: 41,195,514 km (0.119 R)
- M65: 41,373,834 km (0.086 R)
- M66: 43,989,104 km (0.118 R)
- M67: 44,445,527 km (0.09 R)
- M68: 45,547,017 km (0.082 R)
- M69: 45,916,074 km (0.105 R)
- M70: 46,008,526 km (0.073 R)
- M71: 47,029,531 km (0.105 R)
- M72: 47,309,279 km (0.108 R)
- M73: 49,377,620 km (0.111 R)
- M74: 50,613,597 km (0.103 R)
- M75: 51,667,514 km (0.111 R)
- M76: 52,245,261 km (0.106 R)
- M77: 52,631,672 km (0.065 R)
- M78: 53,019,131 km (0.054 R)
- M79: 53,407,337 km (0.12 R)
- M80: 56,152,010 km (0.062 R)
- M81: 58,942,010 km (0.052 R)
- M82: 59,444,958 km (0.116 R)
- M83: 59,545,787 km (0.111 R)
- M84: 63,931,996 km (0.116 R)
- M85: 65,486,468 km (0.078 R)
- M86: 66,216,057 km (0.066 R)
- M87: 66,948,488 km (0.111 R)
- M88: 67,578,295 km (0.118 R)
- M89: 67,788,630 km (0.113 R)
- M90: 68,210,196 km (0.078 R)
- M91: 69,904,542 km (0.084 R)
- M92: 70,543,474 km (0.12 R)
- M93: 71,077,539 km (0.075 R)
- M94: 71,291,464 km (0.114 R)
- M95: 71,505,688 km (0.1 R)
Kuiper Belt
Range: 30 - 45 AU
Composition
Type: Dwarf Planets/TNOs (Ices)
Reservoir of dwarf planets and volatile ices.
Outer System
Oort Cloud
Range: 306 - 19,577 AU
Composition
Type: Cometary Reservoir
System's final boundary, containing trillions of icy planetesimals.