Star System Generated (Seed: 1766989631)
Star Details
Spectral Class: M6V
Temperature: 2,833 K
Mass: 0.29 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: 10.8 AU
Planetary System (8 Planets)
Planet 1 - Gas Giant
Semi-Major Axis: 0.61 AU
Status: Outer (Cold)
Composition: Hydrogen/Helium Atmosphere
Physical Data
Mass: 64
Radius: 15
Gravity: 0.28 G
Time & Orbit
Eccentricity (e): 0.171
Orbit Range: 0.51 AU - 0.71 AU
Year: 323 Days
Day: 9.1 Hours
Environment
Temp: -160 °C
Axial Tilt: 22.5 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (16)
Outer Limit: 30,410,698 km
- M1: 193,580 km (0.111 R)
- M2: 312,211 km (0.042 R)
- M3: 409,300 km (0.089 R)
- M4: 516,861 km (0.078 R)
- M5: 648,507 km (0.07 R)
- M6: 800,349 km (0.067 R)
- M7: 900,729 km (0.087 R)
- M8: 1,006,046 km (0.028 R)
- M9: 1,104,331 km (0.107 R)
- M10: 1,230,442 km (0.067 R)
- M11: 1,364,482 km (0.042 R)
- M12: 1,570,030 km (0.072 R)
- M13: 1,764,058 km (0.096 R)
- M14: 1,896,901 km (0.112 R)
- M15: 2,021,666 km (0.082 R)
- M16: 2,191,459 km (0.118 R)
Planet 2 - Gas Giant
Semi-Major Axis: 0.66 AU
Status: Outer (Cold)
Composition: Hydrogen/Helium Atmosphere
Physical Data
Mass: 696.6
Radius: 11.1
Gravity: 5.65 G
Time & Orbit
Eccentricity (e): 0.113
Orbit Range: 0.59 AU - 0.73 AU
Year: 364 Days
Day: 6.6 Hours
Environment
Temp: -164 °C
Axial Tilt: 18.9 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (43)
Outer Limit: 30,410,698 km
- M1: 142,417 km (0.087 R)
- M2: 211,831 km (0.115 R)
- M3: 288,873 km (0.068 R)
- M4: 393,592 km (0.095 R)
- M5: 492,925 km (0.111 R)
- M6: 630,405 km (0.114 R)
- M7: 725,101 km (0.056 R)
- M8: 801,545 km (0.106 R)
- M9: 873,053 km (0.065 R)
- M10: 967,898 km (0.077 R)
- M11: 1,119,291 km (0.063 R)
- M12: 1,227,899 km (0.069 R)
- M13: 1,407,566 km (0.108 R)
- M14: 1,530,685 km (0.116 R)
- M15: 1,641,986 km (0.079 R)
- M16: 1,714,392 km (0.079 R)
- M17: 1,803,702 km (0.108 R)
- M18: 1,970,802 km (0.098 R)
- M19: 2,053,530 km (0.049 R)
- M20: 2,131,919 km (0.097 R)
- M21: 2,217,040 km (0.058 R)
- M22: 2,309,043 km (0.072 R)
- M23: 2,396,558 km (0.083 R)
- M24: 2,503,072 km (0.094 R)
- M25: 2,592,980 km (0.051 R)
- M26: 2,678,101 km (0.063 R)
- M27: 2,944,984 km (0.072 R)
- M28: 3,233,857 km (0.07 R)
- M29: 3,431,626 km (0.094 R)
- M30: 3,505,078 km (0.064 R)
- M31: 3,674,124 km (0.103 R)
- M32: 3,763,134 km (0.095 R)
- M33: 3,846,012 km (0.047 R)
- M34: 3,957,312 km (0.054 R)
- M35: 4,062,779 km (0.043 R)
- M36: 4,147,751 km (0.071 R)
- M37: 4,435,427 km (0.066 R)
- M38: 4,559,743 km (0.106 R)
- M39: 4,633,345 km (0.106 R)
- M40: 4,864,175 km (0.084 R)
- M41: 4,954,681 km (0.096 R)
- M42: 5,030,378 km (0.108 R)
- M43: 5,175,488 km (0.055 R)
Planet 3 - Gas Giant
Semi-Major Axis: 1.04 AU
Status: Outer (Cold)
Composition: Hydrogen/Helium Atmosphere
Physical Data
Mass: 22.1
Radius: 10.5
Gravity: 0.2 G
Time & Orbit
Eccentricity (e): 0.101
Orbit Range: 0.93 AU - 1.15 AU
Year: 719 Days
Day: 7.8 Hours
Environment
Temp: -182 °C
Axial Tilt: 175.4 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (19)
Outer Limit: 30,410,698 km
- M1: 190,588 km (0.088 R)
- M2: 261,946 km (0.078 R)
- M3: 421,866 km (0.109 R)
- M4: 524,341 km (0.114 R)
- M5: 632,350 km (0.078 R)
- M6: 741,557 km (0.109 R)
- M7: 908,209 km (0.1 R)
- M8: 1,093,112 km (0.071 R)
- M9: 1,162,226 km (0.12 R)
- M10: 1,290,730 km (0.066 R)
- M11: 1,361,191 km (0.118 R)
- M12: 1,475,783 km (0.088 R)
- M13: 1,599,800 km (0.074 R)
- M14: 1,721,124 km (0.08 R)
- M15: 1,838,857 km (0.079 R)
- M16: 1,983,219 km (0.08 R)
- M17: 2,222,875 km (0.095 R)
- M18: 2,333,577 km (0.119 R)
- M19: 2,438,894 km (0.109 R)
Planet 4 - Gas Giant
Semi-Major Axis: 1.28 AU
Status: Outer (Cold)
Composition: Hydrogen/Helium Atmosphere
Physical Data
Mass: 69.4
Radius: 15
Gravity: 0.31 G
Time & Orbit
Eccentricity (e): 0.15
Orbit Range: 1.09 AU - 1.47 AU
Year: 982 Days
Day: 11 Hours
Environment
Temp: -190 °C
Axial Tilt: 41.9 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (29)
Outer Limit: 30,410,698 km
- M1: 186,698 km (0.077 R)
- M2: 282,291 km (0.06 R)
- M3: 413,189 km (0.094 R)
- M4: 521,199 km (0.12 R)
- M5: 629,508 km (0.042 R)
- M6: 723,904 km (0.113 R)
- M7: 863,629 km (0.054 R)
- M8: 1,017,714 km (0.1 R)
- M9: 1,390,811 km (0.117 R)
- M10: 1,511,387 km (0.11 R)
- M11: 1,612,515 km (0.054 R)
- M12: 1,730,249 km (0.086 R)
- M13: 1,900,342 km (0.093 R)
- M14: 2,025,406 km (0.07 R)
- M15: 2,142,989 km (0.094 R)
- M16: 2,326,546 km (0.107 R)
- M17: 2,642,646 km (0.066 R)
- M18: 2,823,211 km (0.082 R)
- M19: 3,042,970 km (0.09 R)
- M20: 3,143,201 km (0.113 R)
- M21: 3,256,596 km (0.095 R)
- M22: 3,371,338 km (0.095 R)
- M23: 3,761,938 km (0.116 R)
- M24: 3,876,230 km (0.091 R)
- M25: 3,991,720 km (0.084 R)
- M26: 4,173,631 km (0.085 R)
- M27: 4,492,125 km (0.115 R)
- M28: 4,647,707 km (0.108 R)
- M29: 4,743,300 km (0.088 R)
Planet 5 - Gas Giant
Semi-Major Axis: 1.53 AU
Status: Outer (Cold)
Composition: Hydrogen/Helium Atmosphere
Physical Data
Mass: 384.8
Radius: 12
Gravity: 2.67 G
Time & Orbit
Eccentricity (e): 0.126
Orbit Range: 1.34 AU - 1.72 AU
Year: 1284 Days
Day: 7.1 Hours
Environment
Temp: -198 °C
Axial Tilt: 19.3 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (54)
Outer Limit: 30,410,698 km
- M1: 157,676 km (0.051 R)
- M2: 246,986 km (0.099 R)
- M3: 328,966 km (0.058 R)
- M4: 408,103 km (0.085 R)
- M5: 546,032 km (0.093 R)
- M6: 702,362 km (0.058 R)
- M7: 789,727 km (0.08 R)
- M8: 931,845 km (0.059 R)
- M9: 1,172,249 km (0.072 R)
- M10: 1,293,124 km (0.11 R)
- M11: 1,425,967 km (0.12 R)
- M12: 1,540,260 km (0.071 R)
- M13: 1,641,837 km (0.094 R)
- M14: 1,729,800 km (0.103 R)
- M15: 1,819,260 km (0.051 R)
- M16: 1,969,306 km (0.088 R)
- M17: 2,080,308 km (0.088 R)
- M18: 2,272,990 km (0.091 R)
- M19: 2,389,676 km (0.084 R)
- M20: 2,471,656 km (0.059 R)
- M21: 2,638,757 km (0.109 R)
- M22: 2,838,320 km (0.047 R)
- M23: 3,102,361 km (0.108 R)
- M24: 3,192,119 km (0.114 R)
- M25: 3,374,479 km (0.059 R)
- M26: 3,633,583 km (0.109 R)
- M27: 3,717,956 km (0.089 R)
- M28: 3,845,563 km (0.104 R)
- M29: 3,963,895 km (0.079 R)
- M30: 4,138,326 km (0.086 R)
- M31: 4,483,448 km (0.11 R)
- M32: 4,574,104 km (0.106 R)
- M33: 4,757,212 km (0.098 R)
- M34: 4,837,995 km (0.084 R)
- M35: 4,919,376 km (0.108 R)
- M36: 5,118,790 km (0.057 R)
- M37: 5,261,357 km (0.093 R)
- M38: 5,856,607 km (0.091 R)
- M39: 5,955,940 km (0.049 R)
- M40: 6,511,846 km (0.068 R)
- M41: 6,653,515 km (0.077 R)
- M42: 6,822,261 km (0.06 R)
- M43: 7,124,299 km (0.117 R)
- M44: 7,457,454 km (0.104 R)
- M45: 8,236,410 km (0.098 R)
- M46: 8,333,948 km (0.109 R)
- M47: 8,600,382 km (0.084 R)
- M48: 8,685,204 km (0.065 R)
- M49: 8,941,166 km (0.105 R)
- M50: 9,055,608 km (0.04 R)
- M51: 9,185,160 km (0.112 R)
- M52: 9,373,204 km (0.07 R)
- M53: 9,694,391 km (0.115 R)
- M54: 9,886,026 km (0.098 R)
Planet 6 - Gas Giant
Semi-Major Axis: 1.59 AU
Status: Outer (Cold)
Composition: Hydrogen/Helium Atmosphere
Physical Data
Mass: 951.2
Radius: 14
Gravity: 4.85 G
Time & Orbit
Eccentricity (e): 0.079
Orbit Range: 1.46 AU - 1.72 AU
Year: 1360 Days
Day: 15 Hours
Environment
Temp: -187 °C
Axial Tilt: 6.9 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (65)
Outer Limit: 30,410,698 km
- M1: 175,329 km (0.12 R)
- M2: 321,037 km (0.118 R)
- M3: 416,331 km (0.105 R)
- M4: 532,568 km (0.096 R)
- M5: 798,853 km (0.111 R)
- M6: 921,523 km (0.091 R)
- M7: 1,026,391 km (0.109 R)
- M8: 1,196,633 km (0.076 R)
- M9: 1,404,724 km (0.078 R)
- M10: 1,556,865 km (0.059 R)
- M11: 1,694,645 km (0.067 R)
- M12: 1,930,411 km (0.084 R)
- M13: 2,047,247 km (0.055 R)
- M14: 2,221,379 km (0.091 R)
- M15: 2,492,151 km (0.077 R)
- M16: 2,943,039 km (0.104 R)
- M17: 3,041,474 km (0.078 R)
- M18: 3,304,767 km (0.114 R)
- M19: 3,471,718 km (0.096 R)
- M20: 3,589,003 km (0.109 R)
- M21: 4,084,919 km (0.083 R)
- M22: 4,181,260 km (0.088 R)
- M23: 4,306,324 km (0.077 R)
- M24: 4,418,523 km (0.115 R)
- M25: 4,560,042 km (0.049 R)
- M26: 4,760,952 km (0.118 R)
- M27: 5,053,117 km (0.061 R)
- M28: 5,321,047 km (0.092 R)
- M29: 5,456,882 km (0.103 R)
- M30: 6,058,564 km (0.075 R)
- M31: 6,375,562 km (0.083 R)
- M32: 6,519,924 km (0.099 R)
- M33: 6,616,714 km (0.111 R)
- M34: 6,976,198 km (0.095 R)
- M35: 7,291,699 km (0.099 R)
- M36: 7,476,602 km (0.111 R)
- M37: 7,833,842 km (0.109 R)
- M38: 7,937,065 km (0.093 R)
- M39: 8,689,392 km (0.111 R)
- M40: 8,831,959 km (0.029 R)
- M41: 8,975,124 km (0.092 R)
- M42: 9,119,337 km (0.054 R)
- M43: 9,246,046 km (0.106 R)
- M44: 9,391,455 km (0.062 R)
- M45: 9,574,563 km (0.107 R)
- M46: 9,740,168 km (0.072 R)
- M47: 9,888,419 km (0.065 R)
- M48: 10,149,318 km (0.089 R)
- M49: 10,243,116 km (0.116 R)
- M50: 10,337,213 km (0.091 R)
- M51: 10,773,739 km (0.089 R)
- M52: 11,023,119 km (0.05 R)
- M53: 11,158,206 km (0.117 R)
- M54: 11,254,996 km (0.095 R)
- M55: 11,352,085 km (0.112 R)
- M56: 11,684,491 km (0.065 R)
- M57: 11,842,018 km (0.113 R)
- M58: 12,059,683 km (0.087 R)
- M59: 12,159,016 km (0.08 R)
- M60: 12,398,821 km (0.065 R)
- M61: 12,499,052 km (0.103 R)
- M62: 12,882,920 km (0.099 R)
- M63: 13,086,373 km (0.086 R)
- M64: 13,270,528 km (0.059 R)
- M65: 13,724,258 km (0.104 R)
Planet 7 - Gas Giant
Semi-Major Axis: 3.53 AU
Status: Outer (Cold)
Composition: Hydrogen/Helium Atmosphere
Physical Data
Mass: 608.2
Radius: 9.2
Gravity: 7.19 G
Time & Orbit
Eccentricity (e): 0.092
Orbit Range: 3.21 AU - 3.85 AU
Year: 4498 Days
Day: 13.1 Hours
Environment
Temp: -214 °C
Axial Tilt: 6.4 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (83)
Outer Limit: 30,410,698 km
- M1: 116,836 km (0.102 R)
- M2: 190,588 km (0.078 R)
- M3: 793,617 km (0.095 R)
- M4: 1,030,729 km (0.076 R)
- M5: 1,247,945 km (0.114 R)
- M6: 1,362,238 km (0.034 R)
- M7: 1,465,162 km (0.07 R)
- M8: 1,632,412 km (0.108 R)
- M9: 2,309,791 km (0.108 R)
- M10: 2,743,326 km (0.095 R)
- M11: 3,143,500 km (0.097 R)
- M12: 3,241,487 km (0.11 R)
- M13: 3,400,509 km (0.063 R)
- M14: 3,726,333 km (0.088 R)
- M15: 3,935,022 km (0.106 R)
- M16: 4,606,418 km (0.099 R)
- M17: 4,785,486 km (0.11 R)
- M18: 4,989,687 km (0.05 R)
- M19: 5,406,916 km (0.059 R)
- M20: 5,477,526 km (0.082 R)
- M21: 5,739,023 km (0.087 R)
- M22: 5,835,215 km (0.029 R)
- M23: 6,126,930 km (0.111 R)
- M24: 6,249,750 km (0.031 R)
- M25: 6,398,451 km (0.07 R)
- M26: 6,598,463 km (0.118 R)
- M27: 6,851,433 km (0.108 R)
- M28: 6,953,459 km (0.063 R)
- M29: 7,288,707 km (0.112 R)
- M30: 7,948,284 km (0.118 R)
- M31: 8,217,411 km (0.044 R)
- M32: 8,489,679 km (0.085 R)
- M33: 8,959,267 km (0.039 R)
- M34: 9,043,042 km (0.07 R)
- M35: 9,837,257 km (0.074 R)
- M36: 10,330,331 km (0.049 R)
- M37: 10,418,145 km (0.043 R)
- M38: 10,653,612 km (0.084 R)
- M39: 10,772,094 km (0.113 R)
- M40: 10,861,254 km (0.052 R)
- M41: 11,100,012 km (0.102 R)
- M42: 11,613,283 km (0.096 R)
- M43: 12,165,149 km (0.107 R)
- M44: 12,756,958 km (0.047 R)
- M45: 13,009,031 km (0.113 R)
- M46: 13,135,591 km (0.054 R)
- M47: 13,294,464 km (0.064 R)
- M48: 13,390,057 km (0.041 R)
- M49: 13,549,977 km (0.12 R)
- M50: 14,228,403 km (0.102 R)
- M51: 14,326,240 km (0.107 R)
- M52: 14,686,771 km (0.087 R)
- M53: 14,752,744 km (0.094 R)
- M54: 15,083,654 km (0.06 R)
- M55: 15,183,436 km (0.098 R)
- M56: 15,316,728 km (0.067 R)
- M57: 15,786,615 km (0.092 R)
- M58: 16,159,113 km (0.082 R)
- M59: 16,397,572 km (0.109 R)
- M60: 17,328,520 km (0.085 R)
- M61: 17,433,089 km (0.042 R)
- M62: 17,572,813 km (0.032 R)
- M63: 18,064,541 km (0.102 R)
- M64: 18,989,804 km (0.082 R)
- M65: 19,133,568 km (0.079 R)
- M66: 19,205,524 km (0.098 R)
- M67: 19,494,398 km (0.112 R)
- M68: 20,222,939 km (0.093 R)
- M69: 21,819,298 km (0.102 R)
- M70: 21,894,546 km (0.073 R)
- M71: 22,196,285 km (0.099 R)
- M72: 22,613,513 km (0.098 R)
- M73: 22,880,396 km (0.039 R)
- M74: 23,378,706 km (0.1 R)
- M75: 23,494,346 km (0.105 R)
- M76: 23,803,265 km (0.066 R)
- M77: 24,620,818 km (0.079 R)
- M78: 24,816,791 km (0.09 R)
- M79: 25,210,233 km (0.093 R)
- M80: 26,003,551 km (0.091 R)
- M81: 26,644,129 km (0.041 R)
- M82: 26,805,096 km (0.118 R)
- M83: 26,966,363 km (0.107 R)
Planet 8 - Ice Giant
Semi-Major Axis: 6.02 AU
Status: Outer (Cold)
Composition: Methane/Ammonia Ices
Physical Data
Mass: 174.3
Radius: 4.3
Gravity: 9.43 G
Time & Orbit
Eccentricity (e): 0.027
Orbit Range: 5.86 AU - 6.18 AU
Year: 10018 Days
Day: 19.5 Hours
Environment
Temp: -228 °C
Axial Tilt: 19 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (95)
Outer Limit: 30,410,698 km
- M1: 58,493 km (0.085 R)
- M2: 278,402 km (0.099 R)
- M3: 434,432 km (0.102 R)
- M4: 556,504 km (0.065 R)
- M5: 819,048 km (0.115 R)
- M6: 859,440 km (0.056 R)
- M7: 1,395,150 km (0.083 R)
- M8: 1,764,357 km (0.093 R)
- M9: 1,996,384 km (0.045 R)
- M10: 2,069,687 km (0.105 R)
- M11: 2,218,985 km (0.091 R)
- M12: 2,256,833 km (0.101 R)
- M13: 2,687,675 km (0.12 R)
- M14: 2,728,067 km (0.108 R)
- M15: 2,830,093 km (0.091 R)
- M16: 3,079,771 km (0.072 R)
- M17: 3,358,472 km (0.054 R)
- M18: 3,533,950 km (0.03 R)
- M19: 3,962,548 km (0.102 R)
- M20: 4,054,850 km (0.093 R)
- M21: 4,312,458 km (0.096 R)
- M22: 4,623,771 km (0.053 R)
- M23: 5,066,581 km (0.102 R)
- M24: 5,626,226 km (0.05 R)
- M25: 5,913,305 km (0.042 R)
- M26: 6,231,948 km (0.117 R)
- M27: 6,447,369 km (0.044 R)
- M28: 6,501,673 km (0.074 R)
- M29: 6,528,900 km (0.086 R)
- M30: 6,747,762 km (0.062 R)
- M31: 6,802,814 km (0.067 R)
- M32: 7,248,914 km (0.083 R)
- M33: 7,675,717 km (0.076 R)
- M34: 7,762,185 km (0.079 R)
- M35: 7,819,929 km (0.078 R)
- M36: 7,935,718 km (0.119 R)
- M37: 8,643,167 km (0.103 R)
- M38: 9,247,991 km (0.1 R)
- M39: 9,401,329 km (0.058 R)
- M40: 9,679,431 km (0.072 R)
- M41: 9,710,398 km (0.114 R)
- M42: 9,741,514 km (0.057 R)
- M43: 9,866,279 km (0.04 R)
- M44: 10,657,801 km (0.1 R)
- M45: 10,915,409 km (0.106 R)
- M46: 11,110,035 km (0.095 R)
- M47: 11,371,084 km (0.097 R)
- M48: 11,866,253 km (0.026 R)
- M49: 12,200,305 km (0.051 R)
- M50: 12,233,815 km (0.113 R)
- M51: 13,117,489 km (0.099 R)
- M52: 13,220,712 km (0.085 R)
- M53: 13,776,019 km (0.091 R)
- M54: 14,197,586 km (0.105 R)
- M55: 14,338,956 km (0.094 R)
- M56: 14,623,192 km (0.044 R)
- M57: 14,730,304 km (0.116 R)
- M58: 16,145,949 km (0.059 R)
- M59: 16,776,504 km (0.093 R)
- M60: 16,888,702 km (0.117 R)
- M61: 17,226,494 km (0.077 R)
- M62: 17,870,662 km (0.097 R)
- M63: 17,908,810 km (0.103 R)
- M64: 18,368,524 km (0.072 R)
- M65: 18,638,548 km (0.096 R)
- M66: 18,677,294 km (0.104 R)
- M67: 18,715,890 km (0.054 R)
- M68: 18,754,636 km (0.096 R)
- M69: 18,909,919 km (0.033 R)
- M70: 19,731,660 km (0.097 R)
- M71: 20,325,713 km (0.076 R)
- M72: 20,525,127 km (0.073 R)
- M73: 20,845,416 km (0.065 R)
- M74: 20,885,508 km (0.074 R)
- M75: 21,086,568 km (0.118 R)
- M76: 21,207,593 km (0.091 R)
- M77: 21,288,375 km (0.12 R)
- M78: 21,369,308 km (0.108 R)
- M79: 21,612,554 km (0.119 R)
- M80: 22,512,535 km (0.089 R)
- M81: 22,553,824 km (0.102 R)
- M82: 22,636,252 km (0.057 R)
- M83: 22,801,408 km (0.113 R)
- M84: 23,591,734 km (0.107 R)
- M85: 23,633,621 km (0.116 R)
- M86: 23,759,283 km (0.116 R)
- M87: 26,406,119 km (0.109 R)
- M88: 26,623,634 km (0.087 R)
- M89: 27,808,299 km (0.113 R)
- M90: 28,162,547 km (0.073 R)
- M91: 28,295,839 km (0.028 R)
- M92: 28,340,269 km (0.095 R)
- M93: 28,384,850 km (0.096 R)
- M94: 28,786,221 km (0.08 R)
- M95: 28,965,289 km (0.095 R)
Kuiper Belt
Range: 30 - 56 AU
Composition
Type: Dwarf Planets/TNOs (Ices)
Reservoir of dwarf planets and volatile ices.
Outer System
Oort Cloud
Range: 268 - 11,538 AU
Composition
Type: Cometary Reservoir
System's final boundary, containing trillions of icy planetesimals.