Star System Generated (Seed: 1766603105)
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 (8 Planets)
Planet 1 - Gas Giant
Semi-Major Axis: 0.5 AU
Status: Outer (Cold)
Composition: Hydrogen/Helium Atmosphere
Physical Data
Mass: 833.6
Radius: 12.1
Gravity: 5.69 G
Time & Orbit
Eccentricity (e): 0.117
Orbit Range: 0.44 AU - 0.56 AU
Year: 244 Days
Day: 6 Hours
Environment
Temp: -144 °C
Axial Tilt: 28.4 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (34)
Outer Limit: 54,337,343 km
- M1: 160,519 km (0.054 R)
- M2: 276,008 km (0.108 R)
- M3: 354,248 km (0.074 R)
- M4: 483,800 km (0.049 R)
- M5: 591,061 km (0.114 R)
- M6: 682,316 km (0.102 R)
- M7: 759,508 km (0.109 R)
- M8: 857,196 km (0.033 R)
- M9: 938,128 km (0.11 R)
- M10: 1,085,632 km (0.094 R)
- M11: 1,217,427 km (0.115 R)
- M12: 1,317,957 km (0.06 R)
- M13: 1,404,724 km (0.093 R)
- M14: 1,493,585 km (0.084 R)
- M15: 1,637,199 km (0.085 R)
- M16: 1,771,837 km (0.103 R)
- M17: 1,919,789 km (0.105 R)
- M18: 2,096,165 km (0.111 R)
- M19: 2,178,893 km (0.066 R)
- M20: 2,272,840 km (0.084 R)
- M21: 2,439,492 km (0.117 R)
- M22: 2,537,180 km (0.1 R)
- M23: 2,631,127 km (0.05 R)
- M24: 2,747,365 km (0.096 R)
- M25: 2,870,933 km (0.1 R)
- M26: 2,952,464 km (0.093 R)
- M27: 3,190,773 km (0.055 R)
- M28: 3,303,869 km (0.098 R)
- M29: 3,504,929 km (0.096 R)
- M30: 3,627,449 km (0.117 R)
- M31: 3,751,466 km (0.051 R)
- M32: 3,985,736 km (0.106 R)
- M33: 4,193,976 km (0.077 R)
- M34: 4,293,160 km (0.104 R)
Planet 2 - Gas Giant
Semi-Major Axis: 0.78 AU
Status: Outer (Cold)
Composition: Hydrogen/Helium Atmosphere
Physical Data
Mass: 661.3
Radius: 11.9
Gravity: 4.67 G
Time & Orbit
Eccentricity (e): 0.045
Orbit Range: 0.74 AU - 0.82 AU
Year: 476 Days
Day: 7 Hours
Environment
Temp: -156 °C
Axial Tilt: 10.6 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (40)
Outer Limit: 54,337,343 km
- M1: 159,172 km (0.089 R)
- M2: 250,876 km (0.055 R)
- M3: 369,507 km (0.027 R)
- M4: 462,557 km (0.118 R)
- M5: 547,379 km (0.105 R)
- M6: 666,608 km (0.104 R)
- M7: 765,792 km (0.034 R)
- M8: 884,123 km (0.09 R)
- M9: 1,066,633 km (0.119 R)
- M10: 1,160,431 km (0.109 R)
- M11: 1,383,332 km (0.046 R)
- M12: 1,481,019 km (0.09 R)
- M13: 1,637,648 km (0.068 R)
- M14: 1,770,790 km (0.11 R)
- M15: 1,919,490 km (0.12 R)
- M16: 2,047,845 km (0.113 R)
- M17: 2,179,192 km (0.102 R)
- M18: 2,281,068 km (0.117 R)
- M19: 2,410,919 km (0.038 R)
- M20: 2,556,628 km (0.102 R)
- M21: 2,884,845 km (0.106 R)
- M22: 3,168,782 km (0.089 R)
- M23: 3,336,182 km (0.112 R)
- M24: 3,642,110 km (0.06 R)
- M25: 3,771,662 km (0.083 R)
- M26: 3,871,742 km (0.113 R)
- M27: 3,972,721 km (0.102 R)
- M28: 4,051,110 km (0.085 R)
- M29: 4,169,592 km (0.096 R)
- M30: 4,281,192 km (0.111 R)
- M31: 4,499,306 km (0.12 R)
- M32: 4,605,670 km (0.033 R)
- M33: 4,829,318 km (0.054 R)
- M34: 4,913,093 km (0.115 R)
- M35: 5,031,126 km (0.076 R)
- M36: 5,477,975 km (0.064 R)
- M37: 5,697,435 km (0.057 R)
- M38: 5,866,181 km (0.106 R)
- M39: 6,090,728 km (0.04 R)
- M40: 6,208,760 km (0.104 R)
Planet 3 - Gas Giant
Semi-Major Axis: 0.91 AU
Status: Outer (Cold)
Composition: Hydrogen/Helium Atmosphere
Physical Data
Mass: 214.2
Radius: 11.2
Gravity: 1.71 G
Time & Orbit
Eccentricity (e): 0.243
Orbit Range: 0.69 AU - 1.13 AU
Year: 599 Days
Day: 9.5 Hours
Environment
Temp: -164 °C
Axial Tilt: 8.6 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (40)
Outer Limit: 54,337,343 km
- M1: 144,063 km (0.041 R)
- M2: 244,742 km (0.098 R)
- M3: 353,350 km (0.09 R)
- M4: 434,731 km (0.098 R)
- M5: 506,090 km (0.107 R)
- M6: 625,469 km (0.026 R)
- M7: 698,024 km (0.098 R)
- M8: 784,940 km (0.075 R)
- M9: 876,045 km (0.12 R)
- M10: 967,001 km (0.082 R)
- M11: 1,095,056 km (0.06 R)
- M12: 1,215,931 km (0.117 R)
- M13: 1,300,604 km (0.114 R)
- M14: 1,410,558 km (0.116 R)
- M15: 1,504,805 km (0.12 R)
- M16: 1,591,422 km (0.074 R)
- M17: 1,684,771 km (0.113 R)
- M18: 1,934,300 km (0.035 R)
- M19: 2,066,246 km (0.11 R)
- M20: 2,201,333 km (0.062 R)
- M21: 2,423,785 km (0.104 R)
- M22: 2,497,686 km (0.06 R)
- M23: 2,624,545 km (0.112 R)
- M24: 2,765,317 km (0.06 R)
- M25: 2,842,808 km (0.072 R)
- M26: 2,963,235 km (0.074 R)
- M27: 3,060,922 km (0.105 R)
- M28: 3,134,823 km (0.063 R)
- M29: 3,278,288 km (0.094 R)
- M30: 3,392,132 km (0.077 R)
- M31: 3,468,875 km (0.099 R)
- M32: 3,774,653 km (0.1 R)
- M33: 3,860,822 km (0.08 R)
- M34: 3,934,274 km (0.092 R)
- M35: 4,062,181 km (0.088 R)
- M36: 4,287,774 km (0.107 R)
- M37: 4,398,626 km (0.064 R)
- M38: 4,468,339 km (0.112 R)
- M39: 4,580,836 km (0.098 R)
- M40: 4,938,375 km (0.042 R)
Planet 4 - Gas Giant
Semi-Major Axis: 1.12 AU
Status: Outer (Cold)
Composition: Hydrogen/Helium Atmosphere
Physical Data
Mass: 70.2
Radius: 8.3
Gravity: 1.02 G
Time & Orbit
Eccentricity (e): 0.053
Orbit Range: 1.06 AU - 1.18 AU
Year: 818 Days
Day: 6.8 Hours
Environment
Temp: -170 °C
Axial Tilt: 50 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (31)
Outer Limit: 54,337,343 km
- M1: 104,719 km (0.072 R)
- M2: 196,572 km (0.091 R)
- M3: 279,000 km (0.06 R)
- M4: 338,091 km (0.05 R)
- M5: 558,150 km (0.043 R)
- M6: 634,295 km (0.093 R)
- M7: 707,748 km (0.106 R)
- M8: 780,901 km (0.061 R)
- M9: 885,021 km (0.052 R)
- M10: 1,107,623 km (0.056 R)
- M11: 1,170,155 km (0.082 R)
- M12: 1,385,725 km (0.036 R)
- M13: 1,479,074 km (0.112 R)
- M14: 1,535,173 km (0.091 R)
- M15: 1,649,765 km (0.109 R)
- M16: 1,735,186 km (0.062 R)
- M17: 2,000,872 km (0.117 R)
- M18: 2,160,642 km (0.119 R)
- M19: 2,349,883 km (0.103 R)
- M20: 2,581,012 km (0.099 R)
- M21: 2,686,179 km (0.109 R)
- M22: 2,808,850 km (0.089 R)
- M23: 2,944,236 km (0.097 R)
- M24: 3,065,260 km (0.098 R)
- M25: 3,148,886 km (0.084 R)
- M26: 3,266,918 km (0.085 R)
- M27: 3,589,302 km (0.065 R)
- M28: 3,683,399 km (0.102 R)
- M29: 3,837,933 km (0.107 R)
- M30: 4,049,315 km (0.093 R)
- M31: 4,122,618 km (0.047 R)
Planet 5 - Gas Giant
Semi-Major Axis: 1.28 AU
Status: Outer (Cold)
Composition: Hydrogen/Helium Atmosphere
Physical Data
Mass: 390.2
Radius: 11.4
Gravity: 3 G
Time & Orbit
Eccentricity (e): 0.183
Orbit Range: 1.05 AU - 1.51 AU
Year: 1000 Days
Day: 7.5 Hours
Environment
Temp: -180 °C
Axial Tilt: 176.5 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (45)
Outer Limit: 54,337,343 km
- M1: 201,658 km (0.109 R)
- M2: 332,257 km (0.109 R)
- M3: 411,993 km (0.098 R)
- M4: 592,108 km (0.027 R)
- M5: 757,863 km (0.116 R)
- M6: 844,330 km (0.064 R)
- M7: 934,388 km (0.101 R)
- M8: 1,076,207 km (0.032 R)
- M9: 1,156,242 km (0.089 R)
- M10: 1,231,938 km (0.105 R)
- M11: 1,309,430 km (0.108 R)
- M12: 1,402,181 km (0.054 R)
- M13: 1,504,057 km (0.107 R)
- M14: 1,629,719 km (0.078 R)
- M15: 1,730,099 km (0.047 R)
- M16: 1,862,194 km (0.108 R)
- M17: 2,074,474 km (0.083 R)
- M18: 2,310,988 km (0.113 R)
- M19: 2,391,920 km (0.068 R)
- M20: 2,776,088 km (0.061 R)
- M21: 2,862,406 km (0.119 R)
- M22: 3,037,435 km (0.1 R)
- M23: 3,180,152 km (0.114 R)
- M24: 3,352,488 km (0.085 R)
- M25: 3,435,216 km (0.117 R)
- M26: 3,546,666 km (0.072 R)
- M27: 4,122,020 km (0.11 R)
- M28: 4,300,340 km (0.11 R)
- M29: 4,634,093 km (0.058 R)
- M30: 4,757,511 km (0.072 R)
- M31: 4,986,695 km (0.114 R)
- M32: 5,145,120 km (0.066 R)
- M33: 5,391,208 km (0.083 R)
- M34: 5,718,079 km (0.029 R)
- M35: 5,817,412 km (0.093 R)
- M36: 6,119,002 km (0.118 R)
- M37: 6,266,056 km (0.111 R)
- M38: 6,379,900 km (0.119 R)
- M39: 6,714,102 km (0.12 R)
- M40: 7,018,683 km (0.055 R)
- M41: 7,184,587 km (0.037 R)
- M42: 7,339,870 km (0.079 R)
- M43: 7,812,150 km (0.116 R)
- M44: 8,083,072 km (0.12 R)
- M45: 8,244,638 km (0.038 R)
Planet 6 - Gas Giant
Semi-Major Axis: 1.99 AU
Status: Outer (Cold)
Composition: Hydrogen/Helium Atmosphere
Physical Data
Mass: 106.3
Radius: 12.3
Gravity: 0.7 G
Time & Orbit
Eccentricity (e): 0.184
Orbit Range: 1.62 AU - 2.36 AU
Year: 1938 Days
Day: 8.2 Hours
Environment
Temp: -211 °C
Axial Tilt: 35.7 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (34)
Outer Limit: 54,337,343 km
- M1: 173,384 km (0.059 R)
- M2: 433,086 km (0.077 R)
- M3: 568,622 km (0.101 R)
- M4: 690,095 km (0.101 R)
- M5: 1,374,804 km (0.088 R)
- M6: 1,517,371 km (0.086 R)
- M7: 1,608,177 km (0.059 R)
- M8: 1,686,566 km (0.117 R)
- M9: 1,810,433 km (0.073 R)
- M10: 2,224,371 km (0.111 R)
- M11: 2,360,954 km (0.108 R)
- M12: 2,500,379 km (0.053 R)
- M13: 2,608,837 km (0.118 R)
- M14: 2,909,080 km (0.093 R)
- M15: 3,394,226 km (0.094 R)
- M16: 3,770,166 km (0.112 R)
- M17: 3,895,379 km (0.12 R)
- M18: 4,021,789 km (0.101 R)
- M19: 4,249,178 km (0.057 R)
- M20: 4,399,673 km (0.073 R)
- M21: 4,480,606 km (0.075 R)
- M22: 5,083,036 km (0.068 R)
- M23: 5,383,130 km (0.119 R)
- M24: 5,622,935 km (0.096 R)
- M25: 5,722,119 km (0.079 R)
- M26: 5,888,621 km (0.119 R)
- M27: 6,582,606 km (0.115 R)
- M28: 6,898,107 km (0.042 R)
- M29: 7,194,760 km (0.061 R)
- M30: 7,314,588 km (0.088 R)
- M31: 7,775,948 km (0.107 R)
- M32: 8,010,218 km (0.113 R)
- M33: 8,372,394 km (0.076 R)
- M34: 8,473,223 km (0.104 R)
Planet 7 - Ice Giant
Semi-Major Axis: 5.97 AU
Status: Outer (Cold)
Composition: Methane/Ammonia Ices
Physical Data
Mass: 852
Radius: 7.3
Gravity: 15.99 G
Time & Orbit
Eccentricity (e): 0.083
Orbit Range: 5.47 AU - 6.47 AU
Year: 10069 Days
Day: 19.3 Hours
Environment
Temp: -228 °C
Axial Tilt: 2.6 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (87)
Outer Limit: 54,337,343 km
- M1: 121,025 km (0.119 R)
- M2: 176,376 km (0.101 R)
- M3: 400,623 km (0.083 R)
- M4: 739,462 km (0.112 R)
- M5: 1,652,458 km (0.11 R)
- M6: 1,849,628 km (0.073 R)
- M7: 1,951,055 km (0.117 R)
- M8: 2,106,787 km (0.095 R)
- M9: 2,239,630 km (0.075 R)
- M10: 2,769,655 km (0.1 R)
- M11: 3,093,834 km (0.057 R)
- M12: 3,154,122 km (0.055 R)
- M13: 3,399,163 km (0.1 R)
- M14: 3,746,080 km (0.05 R)
- M15: 4,371,998 km (0.066 R)
- M16: 4,714,427 km (0.083 R)
- M17: 4,924,014 km (0.082 R)
- M18: 5,208,250 km (0.107 R)
- M19: 5,280,206 km (0.044 R)
- M20: 6,017,425 km (0.059 R)
- M21: 6,513,790 km (0.092 R)
- M22: 6,630,178 km (0.045 R)
- M23: 6,865,046 km (0.1 R)
- M24: 7,302,919 km (0.086 R)
- M25: 7,586,258 km (0.061 R)
- M26: 7,667,938 km (0.102 R)
- M27: 7,914,475 km (0.065 R)
- M28: 7,997,353 km (0.1 R)
- M29: 8,798,150 km (0.082 R)
- M30: 9,013,122 km (0.107 R)
- M31: 9,099,590 km (0.087 R)
- M32: 9,273,422 km (0.113 R)
- M33: 11,583,812 km (0.101 R)
- M34: 12,923,910 km (0.115 R)
- M35: 13,463,659 km (0.063 R)
- M36: 13,860,841 km (0.085 R)
- M37: 15,643,449 km (0.058 R)
- M38: 16,165,995 km (0.076 R)
- M39: 17,389,256 km (0.096 R)
- M40: 17,443,112 km (0.068 R)
- M41: 17,496,967 km (0.071 R)
- M42: 18,039,259 km (0.109 R)
- M43: 19,923,744 km (0.112 R)
- M44: 20,489,822 km (0.091 R)
- M45: 21,118,582 km (0.066 R)
- M46: 21,695,730 km (0.111 R)
- M47: 22,102,786 km (0.09 R)
- M48: 22,336,608 km (0.065 R)
- M49: 23,042,859 km (0.116 R)
- M50: 25,755,517 km (0.079 R)
- M51: 26,063,240 km (0.114 R)
- M52: 27,305,800 km (0.077 R)
- M53: 27,934,261 km (0.047 R)
- M54: 28,250,361 km (0.108 R)
- M55: 29,013,609 km (0.109 R)
- M56: 29,077,488 km (0.098 R)
- M57: 29,526,281 km (0.041 R)
- M58: 29,654,936 km (0.056 R)
- M59: 30,886,276 km (0.064 R)
- M60: 31,016,725 km (0.031 R)
- M61: 31,344,045 km (0.109 R)
- M62: 32,266,466 km (0.068 R)
- M63: 33,197,712 km (0.12 R)
- M64: 34,070,466 km (0.041 R)
- M65: 34,340,490 km (0.113 R)
- M66: 34,882,633 km (0.093 R)
- M67: 35,086,685 km (0.107 R)
- M68: 35,495,984 km (0.114 R)
- M69: 36,044,261 km (0.066 R)
- M70: 37,079,627 km (0.108 R)
- M71: 38,264,891 km (0.088 R)
- M72: 38,475,376 km (0.115 R)
- M73: 39,038,462 km (0.108 R)
- M74: 39,604,241 km (0.073 R)
- M75: 41,750,223 km (0.05 R)
- M76: 42,111,501 km (0.074 R)
- M77: 42,401,272 km (0.056 R)
- M78: 43,201,621 km (0.101 R)
- M79: 43,786,848 km (0.071 R)
- M80: 44,817,278 km (0.083 R)
- M81: 45,558,236 km (0.049 R)
- M82: 45,632,586 km (0.098 R)
- M83: 45,855,637 km (0.104 R)
- M84: 46,527,481 km (0.113 R)
- M85: 46,826,976 km (0.068 R)
- M86: 46,977,023 km (0.106 R)
- M87: 48,486,166 km (0.089 R)
Planet 8 - Ice Giant
Semi-Major Axis: 6.04 AU
Status: Outer (Cold)
Composition: Methane/Ammonia Ices
Physical Data
Mass: 950.5
Radius: 5.1
Gravity: 36.54 G
Time & Orbit
Eccentricity (e): 0.107
Orbit Range: 5.39 AU - 6.69 AU
Year: 10246 Days
Day: 17.8 Hours
Environment
Temp: -219 °C
Axial Tilt: 9.6 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (93)
Outer Limit: 54,337,343 km
- M1: 143,913 km (0.094 R)
- M2: 449,691 km (0.088 R)
- M3: 821,592 km (0.077 R)
- M4: 921,672 km (0.085 R)
- M5: 1,314,666 km (0.103 R)
- M6: 1,361,191 km (0.028 R)
- M7: 1,480,271 km (0.101 R)
- M8: 1,728,454 km (0.099 R)
- M9: 1,989,801 km (0.074 R)
- M10: 2,376,213 km (0.107 R)
- M11: 3,029,207 km (0.103 R)
- M12: 3,767,323 km (0.076 R)
- M13: 4,452,332 km (0.068 R)
- M14: 4,593,851 km (0.098 R)
- M15: 5,137,939 km (0.114 R)
- M16: 6,050,037 km (0.051 R)
- M17: 6,685,529 km (0.109 R)
- M18: 7,217,349 km (0.104 R)
- M19: 7,258,788 km (0.084 R)
- M20: 9,888,120 km (0.095 R)
- M21: 9,934,196 km (0.058 R)
- M22: 10,258,824 km (0.041 R)
- M23: 10,352,173 km (0.058 R)
- M24: 11,013,844 km (0.093 R)
- M25: 12,278,395 km (0.059 R)
- M26: 12,526,877 km (0.107 R)
- M27: 12,626,659 km (0.108 R)
- M28: 13,537,111 km (0.053 R)
- M29: 14,207,759 km (0.106 R)
- M30: 14,416,298 km (0.069 R)
- M31: 15,100,858 km (0.117 R)
- M32: 15,153,965 km (0.036 R)
- M33: 15,207,222 km (0.079 R)
- M34: 15,260,329 km (0.073 R)
- M35: 16,229,125 km (0.111 R)
- M36: 17,495,621 km (0.118 R)
- M37: 18,964,971 km (0.114 R)
- M38: 19,137,158 km (0.087 R)
- M39: 19,252,199 km (0.1 R)
- M40: 19,598,518 km (0.111 R)
- M41: 20,239,096 km (0.117 R)
- M42: 20,297,589 km (0.06 R)
- M43: 20,532,457 km (0.056 R)
- M44: 20,591,249 km (0.112 R)
- M45: 20,650,191 km (0.101 R)
- M46: 21,839,943 km (0.083 R)
- M47: 22,746,805 km (0.061 R)
- M48: 22,868,727 km (0.118 R)
- M49: 22,990,799 km (0.106 R)
- M50: 24,347,652 km (0.082 R)
- M51: 25,540,396 km (0.051 R)
- M52: 25,730,385 km (0.096 R)
- M53: 25,920,823 km (0.027 R)
- M54: 27,009,297 km (0.079 R)
- M55: 27,397,055 km (0.09 R)
- M56: 27,461,831 km (0.114 R)
- M57: 28,308,854 km (0.103 R)
- M58: 28,374,378 km (0.075 R)
- M59: 28,966,187 km (0.101 R)
- M60: 30,765,999 km (0.114 R)
- M61: 31,713,402 km (0.1 R)
- M62: 31,849,536 km (0.086 R)
- M63: 32,122,403 km (0.047 R)
- M64: 32,601,714 km (0.102 R)
- M65: 33,083,420 km (0.064 R)
- M66: 33,567,518 km (0.095 R)
- M67: 34,123,574 km (0.095 R)
- M68: 34,263,148 km (0.114 R)
- M69: 34,963,416 km (0.08 R)
- M70: 35,104,038 km (0.035 R)
- M71: 35,597,711 km (0.106 R)
- M72: 35,951,809 km (0.096 R)
- M73: 36,022,718 km (0.119 R)
- M74: 36,806,312 km (0.029 R)
- M75: 38,680,474 km (0.103 R)
- M76: 39,702,377 km (0.104 R)
- M77: 39,775,680 km (0.116 R)
- M78: 40,216,695 km (0.099 R)
- M79: 41,922,111 km (0.11 R)
- M80: 42,370,755 km (0.101 R)
- M81: 42,445,703 km (0.11 R)
- M82: 43,802,406 km (0.107 R)
- M83: 44,333,778 km (0.115 R)
- M84: 45,402,954 km (0.081 R)
- M85: 45,556,292 km (0.03 R)
- M86: 45,786,822 km (0.105 R)
- M87: 47,177,783 km (0.025 R)
- M88: 49,132,578 km (0.08 R)
- M89: 49,211,267 km (0.109 R)
- M90: 49,921,857 km (0.092 R)
- M91: 50,476,865 km (0.102 R)
- M92: 51,993,638 km (0.081 R)
- M93: 53,525,221 km (0.106 R)
Kuiper Belt
Range: 30 - 55 AU
Composition
Type: Dwarf Planets/TNOs (Ices)
Reservoir of dwarf planets and volatile ices.
Outer System
Oort Cloud
Range: 179 - 19,820 AU
Composition
Type: Cometary Reservoir
System's final boundary, containing trillions of icy planetesimals.