Star System Generated (Seed: 1768489852)
Star Details
Spectral Class: M5V
Temperature: 3,050 K
Mass: 0.3 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: 11 AU
Planetary System (6 Planets)
Planet 1 - Gas Giant
Semi-Major Axis: 2.56 AU
Status: Outer (Cold)
Composition: Hydrogen/Helium Atmosphere
Physical Data
Mass: 529.9
Radius: 14.2
Gravity: 2.63 G
Time & Orbit
Eccentricity (e): 0.098
Orbit Range: 2.31 AU - 2.81 AU
Year: 2731 Days
Day: 8.7 Hours
Environment
Temp: -207 °C
Axial Tilt: 10.5 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (65)
Outer Limit: 39,423,498 km
- M1: 177,124 km (0.092 R)
- M2: 267,182 km (0.088 R)
- M3: 394,190 km (0.103 R)
- M4: 765,492 km (0.071 R)
- M5: 968,048 km (0.049 R)
- M6: 1,242,410 km (0.108 R)
- M7: 1,339,799 km (0.079 R)
- M8: 1,451,249 km (0.081 R)
- M9: 1,684,173 km (0.116 R)
- M10: 2,005,659 km (0.104 R)
- M11: 2,160,941 km (0.114 R)
- M12: 2,623,049 km (0.078 R)
- M13: 2,880,357 km (0.102 R)
- M14: 3,116,273 km (0.106 R)
- M15: 3,654,676 km (0.079 R)
- M16: 3,749,970 km (0.1 R)
- M17: 3,862,168 km (0.078 R)
- M18: 3,959,257 km (0.088 R)
- M19: 4,123,067 km (0.098 R)
- M20: 4,255,760 km (0.094 R)
- M21: 4,423,609 km (0.076 R)
- M22: 4,559,444 km (0.102 R)
- M23: 4,783,242 km (0.103 R)
- M24: 4,905,314 km (0.052 R)
- M25: 5,206,155 km (0.119 R)
- M26: 5,531,381 km (0.103 R)
- M27: 5,715,087 km (0.059 R)
- M28: 5,844,789 km (0.085 R)
- M29: 6,126,033 km (0.102 R)
- M30: 6,469,659 km (0.104 R)
- M31: 7,295,888 km (0.116 R)
- M32: 7,416,614 km (0.084 R)
- M33: 7,660,159 km (0.04 R)
- M34: 8,072,152 km (0.1 R)
- M35: 8,197,066 km (0.064 R)
- M36: 8,343,672 km (0.108 R)
- M37: 8,448,989 km (0.095 R)
- M38: 8,575,997 km (0.12 R)
- M39: 8,682,212 km (0.07 R)
- M40: 8,874,594 km (0.084 R)
- M41: 9,198,474 km (0.076 R)
- M42: 10,509,998 km (0.106 R)
- M43: 10,601,104 km (0.113 R)
- M44: 11,060,219 km (0.108 R)
- M45: 11,479,093 km (0.065 R)
- M46: 11,643,501 km (0.067 R)
- M47: 11,808,508 km (0.105 R)
- M48: 12,021,984 km (0.088 R)
- M49: 12,597,337 km (0.093 R)
- M50: 13,108,214 km (0.075 R)
- M51: 13,427,905 km (0.118 R)
- M52: 13,800,104 km (0.119 R)
- M53: 13,999,967 km (0.091 R)
- M54: 14,326,689 km (0.045 R)
- M55: 14,579,958 km (0.08 R)
- M56: 15,090,685 km (0.106 R)
- M57: 15,219,190 km (0.066 R)
- M58: 15,659,157 km (0.102 R)
- M59: 15,815,487 km (0.106 R)
- M60: 16,182,301 km (0.093 R)
- M61: 16,578,286 km (0.104 R)
- M62: 17,326,276 km (0.083 R)
- M63: 17,568,924 km (0.077 R)
- M64: 18,112,413 km (0.114 R)
- M65: 18,331,424 km (0.083 R)
Planet 2 - Gas Giant
Semi-Major Axis: 2.85 AU
Status: Outer (Cold)
Composition: Hydrogen/Helium Atmosphere
Physical Data
Mass: 106.3
Radius: 12.9
Gravity: 0.64 G
Time & Orbit
Eccentricity (e): 0.117
Orbit Range: 2.52 AU - 3.18 AU
Year: 3208 Days
Day: 13.6 Hours
Environment
Temp: -217 °C
Axial Tilt: 39.6 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (59)
Outer Limit: 39,423,498 km
- M1: 199,264 km (0.065 R)
- M2: 285,732 km (0.094 R)
- M3: 414,984 km (0.061 R)
- M4: 525,837 km (0.08 R)
- M5: 693,237 km (0.118 R)
- M6: 818,151 km (0.049 R)
- M7: 901,477 km (0.102 R)
- M8: 1,032,375 km (0.107 R)
- M9: 1,170,454 km (0.112 R)
- M10: 1,274,125 km (0.073 R)
- M11: 1,414,747 km (0.111 R)
- M12: 1,560,904 km (0.113 R)
- M13: 1,667,268 km (0.108 R)
- M14: 1,840,802 km (0.088 R)
- M15: 1,953,748 km (0.093 R)
- M16: 2,049,640 km (0.076 R)
- M17: 2,377,559 km (0.089 R)
- M18: 2,584,752 km (0.094 R)
- M19: 2,754,845 km (0.095 R)
- M20: 2,841,312 km (0.113 R)
- M21: 3,039,230 km (0.034 R)
- M22: 3,162,499 km (0.03 R)
- M23: 3,264,674 km (0.105 R)
- M24: 3,483,985 km (0.072 R)
- M25: 3,804,274 km (0.078 R)
- M26: 3,998,452 km (0.075 R)
- M27: 4,460,560 km (0.114 R)
- M28: 4,627,062 km (0.063 R)
- M29: 4,717,419 km (0.109 R)
- M30: 4,860,884 km (0.088 R)
- M31: 5,072,116 km (0.113 R)
- M32: 5,192,392 km (0.116 R)
- M33: 5,273,026 km (0.032 R)
- M34: 5,408,412 km (0.078 R)
- M35: 5,682,625 km (0.107 R)
- M36: 5,765,801 km (0.114 R)
- M37: 6,060,060 km (0.062 R)
- M38: 6,373,916 km (0.098 R)
- M39: 6,460,384 km (0.085 R)
- M40: 6,751,502 km (0.107 R)
- M41: 6,839,764 km (0.102 R)
- M42: 7,061,917 km (0.099 R)
- M43: 7,559,330 km (0.089 R)
- M44: 7,666,292 km (0.094 R)
- M45: 7,819,929 km (0.106 R)
- M46: 8,052,405 km (0.064 R)
- M47: 8,208,734 km (0.052 R)
- M48: 8,350,254 km (0.094 R)
- M49: 8,924,411 km (0.057 R)
- M50: 9,037,656 km (0.083 R)
- M51: 9,135,044 km (0.032 R)
- M52: 9,826,486 km (0.106 R)
- M53: 9,976,832 km (0.05 R)
- M54: 10,279,917 km (0.1 R)
- M55: 10,483,669 km (0.085 R)
- M56: 10,895,213 km (0.069 R)
- M57: 11,364,501 km (0.066 R)
- M58: 11,769,612 km (0.105 R)
- M59: 11,875,977 km (0.097 R)
Planet 3 - Gas Giant
Semi-Major Axis: 4.59 AU
Status: Outer (Cold)
Composition: Hydrogen/Helium Atmosphere
Physical Data
Mass: 792
Radius: 14.9
Gravity: 3.57 G
Time & Orbit
Eccentricity (e): 0.184
Orbit Range: 3.75 AU - 5.43 AU
Year: 6558 Days
Day: 5.9 Hours
Environment
Temp: -229 °C
Axial Tilt: 47.4 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (82)
Outer Limit: 39,423,498 km
- M1: 241,301 km (0.07 R)
- M2: 371,900 km (0.093 R)
- M3: 582,684 km (0.082 R)
- M4: 740,659 km (0.056 R)
- M5: 900,130 km (0.117 R)
- M6: 1,362,388 km (0.11 R)
- M7: 1,895,555 km (0.089 R)
- M8: 2,080,458 km (0.091 R)
- M9: 2,207,317 km (0.076 R)
- M10: 2,741,082 km (0.056 R)
- M11: 2,833,982 km (0.098 R)
- M12: 3,047,009 km (0.084 R)
- M13: 3,770,016 km (0.118 R)
- M14: 4,137,877 km (0.118 R)
- M15: 4,272,216 km (0.111 R)
- M16: 4,880,481 km (0.107 R)
- M17: 5,022,599 km (0.109 R)
- M18: 5,166,213 km (0.115 R)
- M19: 5,282,002 km (0.09 R)
- M20: 5,604,983 km (0.067 R)
- M21: 6,519,026 km (0.095 R)
- M22: 6,897,808 km (0.1 R)
- M23: 7,577,880 km (0.114 R)
- M24: 7,876,029 km (0.079 R)
- M25: 7,976,259 km (0.119 R)
- M26: 8,897,633 km (0.058 R)
- M27: 9,388,762 km (0.082 R)
- M28: 9,530,731 km (0.048 R)
- M29: 9,816,762 km (0.085 R)
- M30: 10,214,842 km (0.099 R)
- M31: 10,581,207 km (0.104 R)
- M32: 10,803,210 km (0.101 R)
- M33: 11,440,497 km (0.099 R)
- M34: 11,744,779 km (0.088 R)
- M35: 12,051,604 km (0.086 R)
- M36: 12,517,003 km (0.105 R)
- M37: 13,027,731 km (0.105 R)
- M38: 13,465,304 km (0.055 R)
- M39: 13,585,431 km (0.114 R)
- M40: 14,600,902 km (0.09 R)
- M41: 14,930,915 km (0.107 R)
- M42: 15,138,557 km (0.032 R)
- M43: 15,809,353 km (0.109 R)
- M44: 16,020,885 km (0.116 R)
- M45: 16,963,202 km (0.025 R)
- M46: 17,136,436 km (0.099 R)
- M47: 17,747,543 km (0.093 R)
- M48: 17,967,452 km (0.092 R)
- M49: 18,454,693 km (0.118 R)
- M50: 19,487,367 km (0.117 R)
- M51: 20,400,662 km (0.074 R)
- M52: 21,234,520 km (0.069 R)
- M53: 21,421,368 km (0.083 R)
- M54: 21,843,683 km (0.103 R)
- M55: 22,268,840 km (0.032 R)
- M56: 23,031,340 km (0.118 R)
- M57: 23,175,403 km (0.064 R)
- M58: 24,240,091 km (0.114 R)
- M59: 24,386,398 km (0.1 R)
- M60: 25,667,853 km (0.11 R)
- M61: 25,966,600 km (0.05 R)
- M62: 26,066,531 km (0.116 R)
- M63: 26,870,022 km (0.058 R)
- M64: 27,376,410 km (0.102 R)
- M65: 27,477,987 km (0.026 R)
- M66: 27,630,727 km (0.117 R)
- M67: 28,090,591 km (0.096 R)
- M68: 28,707,682 km (0.033 R)
- M69: 29,693,831 km (0.083 R)
- M70: 30,269,783 km (0.118 R)
- M71: 30,743,858 km (0.098 R)
- M72: 31,008,198 km (0.119 R)
- M73: 32,180,746 km (0.095 R)
- M74: 32,934,420 km (0.079 R)
- M75: 33,096,584 km (0.085 R)
- M76: 33,204,893 km (0.068 R)
- M77: 33,748,382 km (0.098 R)
- M78: 34,075,702 km (0.106 R)
- M79: 35,895,560 km (0.087 R)
- M80: 36,285,562 km (0.097 R)
- M81: 36,789,108 km (0.109 R)
- M82: 37,464,244 km (0.052 R)
Planet 4 - Gas Giant
Semi-Major Axis: 4.89 AU
Status: Outer (Cold)
Composition: Hydrogen/Helium Atmosphere
Physical Data
Mass: 742.9
Radius: 10.2
Gravity: 7.14 G
Time & Orbit
Eccentricity (e): 0.042
Orbit Range: 4.68 AU - 5.1 AU
Year: 7211 Days
Day: 14.3 Hours
Environment
Temp: -221 °C
Axial Tilt: 34.9 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (78)
Outer Limit: 39,423,498 km
- M1: 136,882 km (0.059 R)
- M2: 255,663 km (0.103 R)
- M3: 321,785 km (0.058 R)
- M4: 407,804 km (0.052 R)
- M5: 811,419 km (0.099 R)
- M6: 1,036,863 km (0.104 R)
- M7: 1,105,079 km (0.04 R)
- M8: 1,246,449 km (0.051 R)
- M9: 1,393,953 km (0.08 R)
- M10: 1,469,949 km (0.089 R)
- M11: 1,871,320 km (0.101 R)
- M12: 2,106,637 km (0.069 R)
- M13: 2,466,121 km (0.082 R)
- M14: 2,918,206 km (0.118 R)
- M15: 3,166,538 km (0.057 R)
- M16: 4,062,031 km (0.034 R)
- M17: 4,367,959 km (0.114 R)
- M18: 4,566,475 km (0.089 R)
- M19: 4,652,494 km (0.112 R)
- M20: 4,884,520 km (0.032 R)
- M21: 5,695,789 km (0.03 R)
- M22: 5,944,122 km (0.081 R)
- M23: 6,776,036 km (0.113 R)
- M24: 6,874,321 km (0.038 R)
- M25: 6,940,144 km (0.112 R)
- M26: 9,373,653 km (0.061 R)
- M27: 10,225,762 km (0.088 R)
- M28: 11,335,180 km (0.06 R)
- M29: 11,608,645 km (0.1 R)
- M30: 12,643,713 km (0.118 R)
- M31: 13,213,232 km (0.068 R)
- M32: 13,295,212 km (0.038 R)
- M33: 13,583,786 km (0.105 R)
- M34: 13,874,305 km (0.093 R)
- M35: 14,377,253 km (0.119 R)
- M36: 14,758,428 km (0.103 R)
- M37: 16,492,268 km (0.09 R)
- M38: 17,024,986 km (0.11 R)
- M39: 17,203,755 km (0.094 R)
- M40: 18,518,720 km (0.104 R)
- M41: 19,118,757 km (0.101 R)
- M42: 19,351,233 km (0.062 R)
- M43: 19,537,781 km (0.106 R)
- M44: 19,725,078 km (0.097 R)
- M45: 20,054,193 km (0.102 R)
- M46: 20,148,589 km (0.116 R)
- M47: 21,678,527 km (0.105 R)
- M48: 21,920,875 km (0.042 R)
- M49: 22,018,114 km (0.041 R)
- M50: 22,115,502 km (0.094 R)
- M51: 22,948,912 km (0.099 R)
- M52: 23,047,646 km (0.112 R)
- M53: 24,293,647 km (0.109 R)
- M54: 24,444,591 km (0.037 R)
- M55: 24,950,082 km (0.071 R)
- M56: 25,306,125 km (0.096 R)
- M57: 25,817,451 km (0.041 R)
- M58: 26,383,978 km (0.108 R)
- M59: 27,897,161 km (0.067 R)
- M60: 28,425,391 km (0.117 R)
- M61: 28,584,563 km (0.109 R)
- M62: 29,545,579 km (0.108 R)
- M63: 30,083,982 km (0.084 R)
- M64: 30,408,610 km (0.083 R)
- M65: 30,571,372 km (0.061 R)
- M66: 30,679,980 km (0.095 R)
- M67: 31,225,264 km (0.086 R)
- M68: 32,049,249 km (0.086 R)
- M69: 32,270,056 km (0.107 R)
- M70: 33,047,366 km (0.052 R)
- M71: 34,111,905 km (0.103 R)
- M72: 34,563,541 km (0.054 R)
- M73: 35,187,813 km (0.07 R)
- M74: 35,701,233 km (0.105 R)
- M75: 35,930,267 km (0.071 R)
- M76: 36,851,191 km (0.077 R)
- M77: 37,372,690 km (0.081 R)
- M78: 37,779,895 km (0.082 R)
Planet 5 - Gas Giant
Semi-Major Axis: 5.47 AU
Status: Outer (Cold)
Composition: Hydrogen/Helium Atmosphere
Physical Data
Mass: 236.8
Radius: 10.4
Gravity: 2.19 G
Time & Orbit
Eccentricity (e): 0.03
Orbit Range: 5.31 AU - 5.63 AU
Year: 8531 Days
Day: 5.7 Hours
Environment
Temp: -221 °C
Axial Tilt: 11.7 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (81)
Outer Limit: 39,423,498 km
- M1: 143,315 km (0.101 R)
- M2: 285,882 km (0.093 R)
- M3: 370,404 km (0.033 R)
- M4: 651,948 km (0.082 R)
- M5: 956,529 km (0.113 R)
- M6: 1,082,191 km (0.098 R)
- M7: 1,366,277 km (0.092 R)
- M8: 1,444,966 km (0.106 R)
- M9: 1,741,618 km (0.086 R)
- M10: 1,862,344 km (0.109 R)
- M11: 2,204,175 km (0.104 R)
- M12: 2,430,367 km (0.107 R)
- M13: 2,526,858 km (0.089 R)
- M14: 2,925,985 km (0.073 R)
- M15: 3,049,702 km (0.08 R)
- M16: 3,805,620 km (0.107 R)
- M17: 4,193,228 km (0.114 R)
- M18: 4,427,199 km (0.087 R)
- M19: 4,522,044 km (0.052 R)
- M20: 4,593,552 km (0.118 R)
- M21: 5,179,677 km (0.074 R)
- M22: 5,660,484 km (0.066 R)
- M23: 5,815,318 km (0.103 R)
- M24: 5,919,289 km (0.063 R)
- M25: 6,746,415 km (0.1 R)
- M26: 7,159,604 km (0.089 R)
- M27: 7,271,205 km (0.101 R)
- M28: 7,809,158 km (0.082 R)
- M29: 8,389,299 km (0.087 R)
- M30: 9,285,540 km (0.083 R)
- M31: 9,407,462 km (0.115 R)
- M32: 9,499,166 km (0.082 R)
- M33: 9,899,938 km (0.068 R)
- M34: 10,118,202 km (0.087 R)
- M35: 10,464,221 km (0.117 R)
- M36: 10,846,145 km (0.07 R)
- M37: 11,427,632 km (0.114 R)
- M38: 11,821,074 km (0.059 R)
- M39: 12,252,215 km (0.032 R)
- M40: 12,790,020 km (0.101 R)
- M41: 12,857,787 km (0.11 R)
- M42: 13,232,530 km (0.086 R)
- M43: 13,404,119 km (0.113 R)
- M44: 13,611,013 km (0.073 R)
- M45: 14,308,288 km (0.091 R)
- M46: 14,767,703 km (0.073 R)
- M47: 15,196,152 km (0.115 R)
- M48: 15,882,806 km (0.11 R)
- M49: 16,542,832 km (0.117 R)
- M50: 16,653,684 km (0.062 R)
- M51: 17,249,083 km (0.042 R)
- M52: 18,003,206 km (0.114 R)
- M53: 18,193,345 km (0.109 R)
- M54: 18,537,420 km (0.088 R)
- M55: 20,487,877 km (0.091 R)
- M56: 20,726,336 km (0.031 R)
- M57: 20,845,865 km (0.099 R)
- M58: 21,366,615 km (0.049 R)
- M59: 21,770,081 km (0.073 R)
- M60: 21,851,013 km (0.096 R)
- M61: 22,013,327 km (0.105 R)
- M62: 22,257,620 km (0.072 R)
- M63: 22,872,018 km (0.111 R)
- M64: 23,036,875 km (0.084 R)
- M65: 23,202,031 km (0.087 R)
- M66: 23,367,636 km (0.073 R)
- M67: 23,575,128 km (0.087 R)
- M68: 23,950,320 km (0.098 R)
- M69: 24,537,791 km (0.107 R)
- M70: 24,960,255 km (0.076 R)
- M71: 25,130,049 km (0.079 R)
- M72: 25,812,664 km (0.117 R)
- M73: 25,984,253 km (0.1 R)
- M74: 26,199,225 km (0.115 R)
- M75: 26,501,263 km (0.07 R)
- M76: 26,717,731 km (0.091 R)
- M77: 26,891,414 km (0.034 R)
- M78: 27,065,247 km (0.03 R)
- M79: 28,603,412 km (0.052 R)
- M80: 29,360,676 km (0.099 R)
- M81: 29,450,286 km (0.119 R)
Planet 6 - Ice Giant
Semi-Major Axis: 6.94 AU
Status: Outer (Cold)
Composition: Methane/Ammonia Ices
Physical Data
Mass: 256.4
Radius: 6.3
Gravity: 6.46 G
Time & Orbit
Eccentricity (e): 0.019
Orbit Range: 6.81 AU - 7.07 AU
Year: 12192 Days
Day: 16 Hours
Environment
Temp: -224 °C
Axial Tilt: 36.7 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (61)
Outer Limit: 39,423,498 km
- M1: 282,740 km (0.069 R)
- M2: 466,596 km (0.044 R)
- M3: 968,646 km (0.099 R)
- M4: 1,070,672 km (0.097 R)
- M5: 1,796,371 km (0.091 R)
- M6: 2,295,879 km (0.048 R)
- M7: 3,362,661 km (0.034 R)
- M8: 3,466,332 km (0.034 R)
- M9: 3,571,051 km (0.105 R)
- M10: 3,676,966 km (0.071 R)
- M11: 3,730,223 km (0.044 R)
- M12: 4,110,650 km (0.089 R)
- M13: 4,849,664 km (0.076 R)
- M14: 6,350,430 km (0.093 R)
- M15: 7,300,974 km (0.07 R)
- M16: 7,503,081 km (0.096 R)
- M17: 8,295,202 km (0.09 R)
- M18: 9,661,030 km (0.073 R)
- M19: 10,864,396 km (0.113 R)
- M20: 12,074,343 km (0.095 R)
- M21: 13,656,490 km (0.115 R)
- M22: 14,072,522 km (0.074 R)
- M23: 14,198,184 km (0.116 R)
- M24: 14,577,265 km (0.089 R)
- M25: 15,259,581 km (0.111 R)
- M26: 15,777,938 km (0.103 R)
- M27: 15,865,004 km (0.053 R)
- M28: 15,995,752 km (0.113 R)
- M29: 16,214,464 km (0.032 R)
- M30: 16,743,592 km (0.117 R)
- M31: 17,099,336 km (0.111 R)
- M32: 17,278,255 km (0.054 R)
- M33: 17,682,917 km (0.053 R)
- M34: 18,593,370 km (0.046 R)
- M35: 18,869,527 km (0.107 R)
- M36: 19,752,753 km (0.091 R)
- M37: 20,317,635 km (0.061 R)
- M38: 21,366,765 km (0.045 R)
- M39: 21,511,127 km (0.082 R)
- M40: 21,946,456 km (0.101 R)
- M41: 22,433,547 km (0.092 R)
- M42: 22,580,303 km (0.105 R)
- M43: 24,467,330 km (0.102 R)
- M44: 24,668,838 km (0.112 R)
- M45: 25,225,941 km (0.117 R)
- M46: 25,992,331 km (0.068 R)
- M47: 27,600,358 km (0.045 R)
- M48: 28,654,724 km (0.103 R)
- M49: 28,760,939 km (0.105 R)
- M50: 29,186,993 km (0.094 R)
- M51: 30,585,733 km (0.118 R)
- M52: 33,280,739 km (0.105 R)
- M53: 33,503,939 km (0.115 R)
- M54: 34,515,221 km (0.026 R)
- M55: 34,741,263 km (0.073 R)
- M56: 34,797,811 km (0.116 R)
- M57: 35,707,516 km (0.08 R)
- M58: 36,567,404 km (0.032 R)
- M59: 37,028,764 km (0.091 R)
- M60: 37,724,394 km (0.045 R)
- M61: 38,483,005 km (0.102 R)
Kuiper Belt
Range: 30 - 52 AU
Composition
Type: Dwarf Planets/TNOs (Ices)
Reservoir of dwarf planets and volatile ices.
Outer System
Oort Cloud
Range: 306 - 16,095 AU
Composition
Type: Cometary Reservoir
System's final boundary, containing trillions of icy planetesimals.