Star System Generated (Seed: 1766318672)
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 (6 Planets)
Planet 1 - Gas Giant
Semi-Major Axis: 1.07 AU
Status: Outer (Cold)
Composition: Hydrogen/Helium Atmosphere
Physical Data
Mass: 553.2
Radius: 13
Gravity: 3.27 G
Time & Orbit
Eccentricity (e): 0.168
Orbit Range: 0.89 AU - 1.25 AU
Year: 751 Days
Day: 13.3 Hours
Environment
Temp: -171 °C
Axial Tilt: 2.7 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (44)
Outer Limit: 71,167,326 km
- M1: 200,162 km (0.068 R)
- M2: 308,920 km (0.111 R)
- M3: 441,763 km (0.09 R)
- M4: 556,205 km (0.088 R)
- M5: 664,364 km (0.079 R)
- M6: 801,097 km (0.071 R)
- M7: 889,210 km (0.063 R)
- M8: 1,111,213 km (0.097 R)
- M9: 1,376,899 km (0.077 R)
- M10: 1,636,900 km (0.108 R)
- M11: 1,793,678 km (0.083 R)
- M12: 1,884,784 km (0.096 R)
- M13: 1,991,746 km (0.055 R)
- M14: 2,078,812 km (0.107 R)
- M15: 2,294,981 km (0.075 R)
- M16: 2,409,723 km (0.114 R)
- M17: 2,653,118 km (0.115 R)
- M18: 2,781,922 km (0.081 R)
- M19: 3,155,767 km (0.07 R)
- M20: 3,309,853 km (0.103 R)
- M21: 3,679,360 km (0.082 R)
- M22: 3,805,471 km (0.042 R)
- M23: 3,905,701 km (0.055 R)
- M24: 3,997,405 km (0.098 R)
- M25: 4,099,281 km (0.109 R)
- M26: 4,192,780 km (0.042 R)
- M27: 4,477,165 km (0.116 R)
- M28: 4,709,341 km (0.119 R)
- M29: 4,817,201 km (0.12 R)
- M30: 4,925,809 km (0.056 R)
- M31: 5,286,938 km (0.095 R)
- M32: 5,419,632 km (0.12 R)
- M33: 5,771,635 km (0.079 R)
- M34: 5,876,653 km (0.109 R)
- M35: 5,971,648 km (0.096 R)
- M36: 6,131,269 km (0.113 R)
- M37: 6,476,391 km (0.106 R)
- M38: 6,629,430 km (0.118 R)
- M39: 7,028,557 km (0.108 R)
- M40: 7,129,535 km (0.109 R)
- M41: 7,287,660 km (0.032 R)
- M42: 7,458,351 km (0.094 R)
- M43: 7,561,424 km (0.089 R)
- M44: 7,896,823 km (0.101 R)
Planet 2 - Gas Giant
Semi-Major Axis: 1.85 AU
Status: Outer (Cold)
Composition: Hydrogen/Helium Atmosphere
Physical Data
Mass: 949.4
Radius: 14.8
Gravity: 4.33 G
Time & Orbit
Eccentricity (e): 0.017
Orbit Range: 1.82 AU - 1.88 AU
Year: 1707 Days
Day: 15 Hours
Environment
Temp: -193 °C
Axial Tilt: 10.7 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (59)
Outer Limit: 71,167,326 km
- M1: 220,058 km (0.051 R)
- M2: 388,057 km (0.037 R)
- M3: 485,146 km (0.114 R)
- M4: 826,379 km (0.06 R)
- M5: 972,685 km (0.092 R)
- M6: 1,081,742 km (0.099 R)
- M7: 1,176,288 km (0.059 R)
- M8: 1,273,826 km (0.065 R)
- M9: 1,584,092 km (0.05 R)
- M10: 1,782,459 km (0.097 R)
- M11: 2,059,963 km (0.108 R)
- M12: 2,179,940 km (0.073 R)
- M13: 2,290,044 km (0.053 R)
- M14: 2,683,935 km (0.115 R)
- M15: 2,789,252 km (0.064 R)
- M16: 2,976,848 km (0.044 R)
- M17: 3,099,668 km (0.047 R)
- M18: 3,238,345 km (0.108 R)
- M19: 3,421,752 km (0.081 R)
- M20: 3,594,089 km (0.113 R)
- M21: 3,754,757 km (0.103 R)
- M22: 3,858,279 km (0.116 R)
- M23: 4,205,196 km (0.094 R)
- M24: 4,483,747 km (0.096 R)
- M25: 4,577,994 km (0.111 R)
- M26: 4,720,710 km (0.1 R)
- M27: 4,848,766 km (0.114 R)
- M28: 5,059,550 km (0.038 R)
- M29: 6,053,627 km (0.1 R)
- M30: 6,743,722 km (0.072 R)
- M31: 6,997,740 km (0.102 R)
- M32: 7,217,798 km (0.102 R)
- M33: 7,533,749 km (0.092 R)
- M34: 8,006,628 km (0.105 R)
- M35: 8,314,350 km (0.084 R)
- M36: 8,586,918 km (0.116 R)
- M37: 8,743,996 km (0.086 R)
- M38: 9,080,890 km (0.097 R)
- M39: 9,442,318 km (0.095 R)
- M40: 9,665,668 km (0.099 R)
- M41: 9,808,684 km (0.095 R)
- M42: 10,096,659 km (0.061 R)
- M43: 10,935,305 km (0.111 R)
- M44: 11,041,669 km (0.088 R)
- M45: 11,384,548 km (0.09 R)
- M46: 12,058,935 km (0.088 R)
- M47: 12,235,011 km (0.074 R)
- M48: 12,478,706 km (0.107 R)
- M49: 12,589,858 km (0.103 R)
- M50: 13,560,449 km (0.04 R)
- M51: 13,720,668 km (0.044 R)
- M52: 13,881,635 km (0.117 R)
- M53: 14,484,814 km (0.098 R)
- M54: 15,167,878 km (0.068 R)
- M55: 15,334,231 km (0.091 R)
- M56: 15,453,610 km (0.108 R)
- M57: 15,669,031 km (0.06 R)
- M58: 15,885,499 km (0.116 R)
- M59: 16,030,309 km (0.116 R)
Planet 3 - Gas Giant
Semi-Major Axis: 2.08 AU
Status: Outer (Cold)
Composition: Hydrogen/Helium Atmosphere
Physical Data
Mass: 446.8
Radius: 14.2
Gravity: 2.22 G
Time & Orbit
Eccentricity (e): 0.111
Orbit Range: 1.85 AU - 2.31 AU
Year: 2035 Days
Day: 14.2 Hours
Environment
Temp: -211 °C
Axial Tilt: 26.8 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (61)
Outer Limit: 71,167,326 km
- M1: 177,872 km (0.119 R)
- M2: 277,654 km (0.1 R)
- M3: 375,042 km (0.111 R)
- M4: 492,027 km (0.046 R)
- M5: 639,232 km (0.095 R)
- M6: 744,997 km (0.114 R)
- M7: 857,794 km (0.094 R)
- M8: 968,945 km (0.117 R)
- M9: 1,068,578 km (0.085 R)
- M10: 1,189,752 km (0.1 R)
- M11: 1,371,513 km (0.09 R)
- M12: 1,533,677 km (0.077 R)
- M13: 1,682,378 km (0.07 R)
- M14: 1,805,048 km (0.12 R)
- M15: 1,920,238 km (0.063 R)
- M16: 2,114,267 km (0.11 R)
- M17: 2,202,679 km (0.113 R)
- M18: 2,303,658 km (0.064 R)
- M19: 2,557,376 km (0.102 R)
- M20: 2,844,753 km (0.114 R)
- M21: 2,942,889 km (0.087 R)
- M22: 3,155,468 km (0.06 R)
- M23: 3,321,522 km (0.1 R)
- M24: 3,477,552 km (0.107 R)
- M25: 3,569,704 km (0.09 R)
- M26: 3,837,485 km (0.091 R)
- M27: 3,973,918 km (0.089 R)
- M28: 4,111,997 km (0.109 R)
- M29: 4,709,491 km (0.107 R)
- M30: 5,273,774 km (0.108 R)
- M31: 5,365,028 km (0.12 R)
- M32: 5,533,326 km (0.071 R)
- M33: 5,688,010 km (0.072 R)
- M34: 5,891,314 km (0.034 R)
- M35: 6,482,973 km (0.116 R)
- M36: 6,580,810 km (0.095 R)
- M37: 7,026,911 km (0.119 R)
- M38: 7,619,917 km (0.056 R)
- M39: 7,809,757 km (0.102 R)
- M40: 8,818,046 km (0.119 R)
- M41: 8,908,404 km (0.102 R)
- M42: 9,126,667 km (0.12 R)
- M43: 9,568,729 km (0.116 R)
- M44: 10,036,521 km (0.076 R)
- M45: 10,130,917 km (0.071 R)
- M46: 10,301,758 km (0.112 R)
- M47: 10,397,052 km (0.092 R)
- M48: 10,607,835 km (0.054 R)
- M49: 10,916,905 km (0.057 R)
- M50: 11,228,966 km (0.089 R)
- M51: 11,366,446 km (0.099 R)
- M52: 11,742,386 km (0.059 R)
- M53: 11,861,914 km (0.114 R)
- M54: 12,324,022 km (0.063 R)
- M55: 12,486,186 km (0.098 R)
- M56: 12,771,619 km (0.094 R)
- M57: 13,245,395 km (0.032 R)
- M58: 13,578,400 km (0.071 R)
- M59: 13,745,800 km (0.11 R)
- M60: 13,998,471 km (0.087 R)
- M61: 14,125,330 km (0.103 R)
Planet 4 - Gas Giant
Semi-Major Axis: 2.66 AU
Status: Outer (Cold)
Composition: Hydrogen/Helium Atmosphere
Physical Data
Mass: 972.2
Radius: 14.2
Gravity: 4.82 G
Time & Orbit
Eccentricity (e): 0.099
Orbit Range: 2.4 AU - 2.92 AU
Year: 2942 Days
Day: 13.9 Hours
Environment
Temp: -214 °C
Axial Tilt: 36.1 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (75)
Outer Limit: 71,167,326 km
- M1: 187,596 km (0.097 R)
- M2: 387,458 km (0.111 R)
- M3: 624,122 km (0.076 R)
- M4: 731,982 km (0.098 R)
- M5: 969,993 km (0.065 R)
- M6: 1,147,565 km (0.069 R)
- M7: 1,247,197 km (0.051 R)
- M8: 1,415,645 km (0.073 R)
- M9: 1,564,495 km (0.062 R)
- M10: 1,953,000 km (0.072 R)
- M11: 2,182,184 km (0.034 R)
- M12: 2,518,181 km (0.066 R)
- M13: 2,768,757 km (0.077 R)
- M14: 2,871,232 km (0.093 R)
- M15: 2,992,556 km (0.12 R)
- M16: 3,204,536 km (0.05 R)
- M17: 3,312,546 km (0.063 R)
- M18: 3,421,602 km (0.105 R)
- M19: 3,662,455 km (0.078 R)
- M20: 3,928,141 km (0.108 R)
- M21: 4,121,721 km (0.116 R)
- M22: 4,498,558 km (0.113 R)
- M23: 4,660,722 km (0.099 R)
- M24: 4,907,409 km (0.055 R)
- M25: 5,158,583 km (0.084 R)
- M26: 5,307,134 km (0.098 R)
- M27: 5,478,573 km (0.063 R)
- M28: 5,783,154 km (0.08 R)
- M29: 6,363,744 km (0.102 R)
- M30: 7,174,564 km (0.027 R)
- M31: 7,871,242 km (0.114 R)
- M32: 8,067,364 km (0.05 R)
- M33: 8,464,248 km (0.094 R)
- M34: 8,614,893 km (0.097 R)
- M35: 8,791,568 km (0.027 R)
- M36: 9,020,602 km (0.101 R)
- M37: 9,277,462 km (0.087 R)
- M38: 9,562,894 km (0.059 R)
- M39: 9,956,636 km (0.093 R)
- M40: 10,328,985 km (0.052 R)
- M41: 10,570,885 km (0.064 R)
- M42: 10,950,714 km (0.12 R)
- M43: 11,335,180 km (0.079 R)
- M44: 11,501,383 km (0.085 R)
- M45: 11,724,135 km (0.109 R)
- M46: 11,976,506 km (0.095 R)
- M47: 12,202,250 km (0.077 R)
- M48: 12,486,635 km (0.077 R)
- M49: 13,469,493 km (0.044 R)
- M50: 13,733,982 km (0.106 R)
- M51: 13,940,726 km (0.088 R)
- M52: 14,477,334 km (0.087 R)
- M53: 14,869,131 km (0.076 R)
- M54: 15,356,221 km (0.047 R)
- M55: 15,448,075 km (0.103 R)
- M56: 15,540,227 km (0.107 R)
- M57: 15,786,615 km (0.114 R)
- M58: 16,096,581 km (0.117 R)
- M59: 16,345,961 km (0.055 R)
- M60: 17,229,037 km (0.083 R)
- M61: 18,127,522 km (0.084 R)
- M62: 18,419,537 km (0.087 R)
- M63: 18,975,443 km (0.097 R)
- M64: 19,205,973 km (0.05 R)
- M65: 19,404,340 km (0.052 R)
- M66: 19,836,378 km (0.102 R)
- M67: 20,541,134 km (0.068 R)
- M68: 21,219,860 km (0.115 R)
- M69: 21,733,728 km (0.084 R)
- M70: 22,044,144 km (0.071 R)
- M71: 22,321,199 km (0.081 R)
- M72: 22,529,739 km (0.063 R)
- M73: 22,913,906 km (0.104 R)
- M74: 23,511,699 km (0.076 R)
- M75: 23,830,342 km (0.117 R)
Planet 5 - Ice Giant
Semi-Major Axis: 5.88 AU
Status: Outer (Cold)
Composition: Methane/Ammonia Ices
Physical Data
Mass: 893.2
Radius: 5.9
Gravity: 25.66 G
Time & Orbit
Eccentricity (e): 0.168
Orbit Range: 4.89 AU - 6.87 AU
Year: 9671 Days
Day: 19.6 Hours
Environment
Temp: -218 °C
Axial Tilt: 39.9 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (91)
Outer Limit: 71,167,326 km
- M1: 77,940 km (0.096 R)
- M2: 116,986 km (0.083 R)
- M3: 207,343 km (0.087 R)
- M4: 263,442 km (0.108 R)
- M5: 422,614 km (0.096 R)
- M6: 662,270 km (0.113 R)
- M7: 733,030 km (0.116 R)
- M8: 1,000,211 km (0.073 R)
- M9: 1,144,723 km (0.069 R)
- M10: 1,318,256 km (0.067 R)
- M11: 1,362,986 km (0.094 R)
- M12: 1,408,314 km (0.112 R)
- M13: 2,093,772 km (0.111 R)
- M14: 2,415,108 km (0.071 R)
- M15: 2,638,158 km (0.101 R)
- M16: 2,809,747 km (0.095 R)
- M17: 3,163,845 km (0.049 R)
- M18: 3,978,555 km (0.087 R)
- M19: 4,647,258 km (0.086 R)
- M20: 4,854,601 km (0.101 R)
- M21: 5,135,695 km (0.104 R)
- M22: 6,312,731 km (0.082 R)
- M23: 6,465,470 km (0.079 R)
- M24: 7,367,546 km (0.072 R)
- M25: 7,772,058 km (0.089 R)
- M26: 7,853,739 km (0.084 R)
- M27: 7,977,007 km (0.068 R)
- M28: 8,183,602 km (0.031 R)
- M29: 8,434,029 km (0.115 R)
- M30: 8,476,066 km (0.1 R)
- M31: 9,899,938 km (0.072 R)
- M32: 10,077,511 km (0.075 R)
- M33: 10,390,769 km (0.083 R)
- M34: 10,526,155 km (0.105 R)
- M35: 11,303,615 km (0.106 R)
- M36: 12,289,315 km (0.049 R)
- M37: 12,575,945 km (0.034 R)
- M38: 12,864,818 km (0.067 R)
- M39: 13,992,338 km (0.089 R)
- M40: 14,391,914 km (0.108 R)
- M41: 14,492,443 km (0.054 R)
- M42: 15,716,304 km (0.11 R)
- M43: 15,975,407 km (0.117 R)
- M44: 17,828,625 km (0.086 R)
- M45: 18,370,469 km (0.114 R)
- M46: 18,807,744 km (0.114 R)
- M47: 20,196,610 km (0.065 R)
- M48: 20,252,709 km (0.113 R)
- M49: 20,874,887 km (0.093 R)
- M50: 21,273,864 km (0.084 R)
- M51: 21,906,215 km (0.114 R)
- M52: 22,369,818 km (0.094 R)
- M53: 24,676,318 km (0.079 R)
- M54: 24,796,595 km (0.09 R)
- M55: 25,279,796 km (0.054 R)
- M56: 25,401,120 km (0.117 R)
- M57: 25,705,103 km (0.082 R)
- M58: 26,624,531 km (0.046 R)
- M59: 26,686,166 km (0.071 R)
- M60: 26,747,950 km (0.093 R)
- M61: 27,492,349 km (0.086 R)
- M62: 27,992,305 km (0.099 R)
- M63: 29,894,143 km (0.064 R)
- M64: 30,022,348 km (0.065 R)
- M65: 31,119,947 km (0.118 R)
- M66: 31,380,098 km (0.071 R)
- M67: 31,902,644 km (0.111 R)
- M68: 32,559,827 km (0.095 R)
- M69: 32,956,261 km (0.049 R)
- M70: 34,222,158 km (0.099 R)
- M71: 35,843,799 km (0.111 R)
- M72: 35,980,083 km (0.112 R)
- M73: 37,905,856 km (0.1 R)
- M74: 38,462,211 km (0.106 R)
- M75: 38,671,498 km (0.101 R)
- M76: 39,723,919 km (0.109 R)
- M77: 39,935,451 km (0.049 R)
- M78: 40,572,439 km (0.116 R)
- M79: 41,928,394 km (0.086 R)
- M80: 42,287,578 km (0.088 R)
- M81: 42,792,321 km (0.09 R)
- M82: 43,662,083 km (0.073 R)
- M83: 44,830,891 km (0.115 R)
- M84: 44,904,344 km (0.046 R)
- M85: 45,566,614 km (0.119 R)
- M86: 46,306,375 km (0.114 R)
- M87: 48,097,810 km (0.078 R)
- M88: 48,549,296 km (0.102 R)
- M89: 48,624,694 km (0.118 R)
- M90: 49,077,676 km (0.061 R)
- M91: 50,827,223 km (0.096 R)
Planet 6 - Ice Giant
Semi-Major Axis: 8.24 AU
Status: Outer (Cold)
Composition: Methane/Ammonia Ices
Physical Data
Mass: 871.1
Radius: 5.4
Gravity: 29.87 G
Time & Orbit
Eccentricity (e): 0.248
Orbit Range: 6.2 AU - 10.28 AU
Year: 16043 Days
Day: 20.7 Hours
Environment
Temp: -233 °C
Axial Tilt: 37.3 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (97)
Outer Limit: 71,167,326 km
- M1: 92,302 km (0.11 R)
- M2: 127,906 km (0.096 R)
- M3: 348,264 km (0.109 R)
- M4: 455,226 km (0.112 R)
- M5: 552,764 km (0.096 R)
- M6: 657,483 km (0.104 R)
- M7: 814,860 km (0.112 R)
- M8: 1,112,111 km (0.079 R)
- M9: 1,527,544 km (0.09 R)
- M10: 1,615,956 km (0.11 R)
- M11: 1,675,945 km (0.092 R)
- M12: 1,891,665 km (0.085 R)
- M13: 2,417,502 km (0.103 R)
- M14: 2,520,874 km (0.105 R)
- M15: 2,912,521 km (0.094 R)
- M16: 3,515,849 km (0.081 R)
- M17: 4,115,437 km (0.101 R)
- M18: 4,490,180 km (0.036 R)
- M19: 5,050,723 km (0.112 R)
- M20: 5,451,646 km (0.082 R)
- M21: 6,522,168 km (0.113 R)
- M22: 6,714,850 km (0.102 R)
- M23: 7,504,128 km (0.116 R)
- M24: 7,554,543 km (0.049 R)
- M25: 8,115,236 km (0.088 R)
- M26: 8,742,200 km (0.076 R)
- M27: 8,848,265 km (0.05 R)
- M28: 9,330,569 km (0.086 R)
- M29: 9,438,878 km (0.036 R)
- M30: 10,488,905 km (0.102 R)
- M31: 12,161,409 km (0.116 R)
- M32: 12,458,062 km (0.091 R)
- M33: 12,998,110 km (0.108 R)
- M34: 13,668,309 km (0.094 R)
- M35: 14,412,408 km (0.104 R)
- M36: 14,915,656 km (0.066 R)
- M37: 15,552,943 km (0.093 R)
- M38: 15,617,120 km (0.032 R)
- M39: 17,052,063 km (0.091 R)
- M40: 18,392,609 km (0.108 R)
- M41: 18,664,728 km (0.084 R)
- M42: 18,732,945 km (0.1 R)
- M43: 19,281,969 km (0.12 R)
- M44: 19,697,103 km (0.052 R)
- M45: 20,185,241 km (0.086 R)
- M46: 22,321,797 km (0.08 R)
- M47: 24,828,759 km (0.037 R)
- M48: 25,355,792 km (0.089 R)
- M49: 25,507,185 km (0.102 R)
- M50: 25,810,569 km (0.109 R)
- M51: 26,574,416 km (0.093 R)
- M52: 26,959,182 km (0.077 R)
- M53: 27,036,374 km (0.046 R)
- M54: 27,268,251 km (0.105 R)
- M55: 28,046,160 km (0.117 R)
- M56: 30,262,752 km (0.095 R)
- M57: 31,554,380 km (0.056 R)
- M58: 34,861,390 km (0.117 R)
- M59: 34,945,464 km (0.112 R)
- M60: 35,113,911 km (0.052 R)
- M61: 35,451,404 km (0.114 R)
- M62: 36,983,586 km (0.108 R)
- M63: 38,103,475 km (0.098 R)
- M64: 38,276,859 km (0.096 R)
- M65: 38,885,423 km (0.078 R)
- M66: 38,972,489 km (0.118 R)
- M67: 39,936,049 km (0.117 R)
- M68: 45,694,969 km (0.083 R)
- M69: 46,525,387 km (0.076 R)
- M70: 48,482,426 km (0.11 R)
- M71: 48,764,119 km (0.043 R)
- M72: 52,862,053 km (0.119 R)
- M73: 52,958,544 km (0.075 R)
- M74: 53,055,184 km (0.105 R)
- M75: 53,248,764 km (0.043 R)
- M76: 54,512,267 km (0.098 R)
- M77: 55,196,678 km (0.116 R)
- M78: 55,982,366 km (0.109 R)
- M79: 56,080,801 km (0.063 R)
- M80: 57,266,962 km (0.117 R)
- M81: 57,465,479 km (0.044 R)
- M82: 58,461,352 km (0.116 R)
- M83: 59,865,178 km (0.102 R)
- M84: 59,965,858 km (0.087 R)
- M85: 61,584,806 km (0.107 R)
- M86: 62,093,588 km (0.085 R)
- M87: 63,217,966 km (0.076 R)
- M88: 63,525,689 km (0.118 R)
- M89: 63,834,010 km (0.106 R)
- M90: 66,109,992 km (0.052 R)
- M91: 66,318,232 km (0.09 R)
- M92: 66,422,502 km (0.085 R)
- M93: 66,735,311 km (0.067 R)
- M94: 67,258,006 km (0.101 R)
- M95: 67,991,933 km (0.091 R)
- M96: 68,623,086 km (0.083 R)
- M97: 70,634,729 km (0.066 R)
Kuiper Belt
Range: 30 - 59 AU
Composition
Type: Dwarf Planets/TNOs (Ices)
Reservoir of dwarf planets and volatile ices.
Outer System
Oort Cloud
Range: 399 - 14,579 AU
Composition
Type: Cometary Reservoir
System's final boundary, containing trillions of icy planetesimals.