Star System Generated (Seed: 1766924462)
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 (7 Planets)
Planet 1 - Gas Giant
Semi-Major Axis: 1.12 AU
Status: Outer (Cold)
Composition: Hydrogen/Helium Atmosphere
Physical Data
Mass: 906.4
Radius: 8.3
Gravity: 13.16 G
Time & Orbit
Eccentricity (e): 0.011
Orbit Range: 1.11 AU - 1.13 AU
Year: 765 Days
Day: 8.2 Hours
Environment
Temp: -171 °C
Axial Tilt: 5.9 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (68)
Outer Limit: 39,184,947 km
- M1: 113,994 km (0.091 R)
- M2: 192,832 km (0.057 R)
- M3: 262,245 km (0.081 R)
- M4: 335,698 km (0.045 R)
- M5: 483,500 km (0.079 R)
- M6: 537,954 km (0.109 R)
- M7: 621,280 km (0.116 R)
- M8: 686,953 km (0.1 R)
- M9: 766,689 km (0.116 R)
- M10: 874,100 km (0.089 R)
- M11: 1,045,091 km (0.026 R)
- M12: 1,097,899 km (0.057 R)
- M13: 1,199,476 km (0.059 R)
- M14: 1,545,795 km (0.111 R)
- M15: 1,652,608 km (0.062 R)
- M16: 1,769,892 km (0.1 R)
- M17: 1,906,176 km (0.108 R)
- M18: 2,112,920 km (0.075 R)
- M19: 2,180,688 km (0.057 R)
- M20: 2,249,204 km (0.114 R)
- M21: 2,327,144 km (0.086 R)
- M22: 2,485,718 km (0.112 R)
- M23: 2,575,477 km (0.072 R)
- M24: 2,675,259 km (0.106 R)
- M25: 2,748,861 km (0.084 R)
- M26: 2,822,912 km (0.095 R)
- M27: 2,973,407 km (0.068 R)
- M28: 3,078,275 km (0.087 R)
- M29: 3,136,020 km (0.089 R)
- M30: 3,233,109 km (0.115 R)
- M31: 3,331,245 km (0.097 R)
- M32: 3,550,705 km (0.102 R)
- M33: 3,692,674 km (0.093 R)
- M34: 3,785,125 km (0.101 R)
- M35: 3,919,763 km (0.097 R)
- M36: 4,236,911 km (0.12 R)
- M37: 4,409,397 km (0.119 R)
- M38: 4,529,375 km (0.084 R)
- M39: 4,584,277 km (0.093 R)
- M40: 4,694,680 km (0.03 R)
- M41: 4,828,421 km (0.107 R)
- M42: 4,884,520 km (0.076 R)
- M43: 5,122,530 km (0.1 R)
- M44: 5,191,345 km (0.095 R)
- M45: 5,294,867 km (0.084 R)
- M46: 5,539,460 km (0.042 R)
- M47: 5,740,070 km (0.093 R)
- M48: 5,991,395 km (0.081 R)
- M49: 6,063,800 km (0.09 R)
- M50: 6,221,775 km (0.035 R)
- M51: 6,307,345 km (0.091 R)
- M52: 6,516,932 km (0.117 R)
- M53: 6,603,998 km (0.069 R)
- M54: 6,691,363 km (0.082 R)
- M55: 7,006,566 km (0.083 R)
- M56: 7,070,145 km (0.063 R)
- M57: 7,494,853 km (0.107 R)
- M58: 7,743,186 km (0.085 R)
- M59: 8,154,281 km (0.115 R)
- M60: 8,355,639 km (0.076 R)
- M61: 8,517,953 km (0.07 R)
- M62: 8,777,206 km (0.116 R)
- M63: 8,845,872 km (0.112 R)
- M64: 9,011,327 km (0.107 R)
- M65: 9,094,503 km (0.111 R)
- M66: 9,177,829 km (0.107 R)
- M67: 9,233,629 km (0.054 R)
- M68: 9,359,292 km (0.038 R)
Planet 2 - Gas Giant
Semi-Major Axis: 1.2 AU
Status: Outer (Cold)
Composition: Hydrogen/Helium Atmosphere
Physical Data
Mass: 593.6
Radius: 12.7
Gravity: 3.68 G
Time & Orbit
Eccentricity (e): 0.177
Orbit Range: 0.99 AU - 1.41 AU
Year: 849 Days
Day: 10.6 Hours
Environment
Temp: -171 °C
Axial Tilt: 47.8 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (47)
Outer Limit: 39,184,947 km
- M1: 160,070 km (0.06 R)
- M2: 298,298 km (0.045 R)
- M3: 428,000 km (0.073 R)
- M4: 513,719 km (0.099 R)
- M5: 592,707 km (0.109 R)
- M6: 692,040 km (0.108 R)
- M7: 864,526 km (0.11 R)
- M8: 1,177,036 km (0.114 R)
- M9: 1,313,769 km (0.113 R)
- M10: 1,560,904 km (0.055 R)
- M11: 1,683,126 km (0.099 R)
- M12: 1,771,388 km (0.093 R)
- M13: 1,945,072 km (0.033 R)
- M14: 2,156,453 km (0.093 R)
- M15: 2,309,791 km (0.066 R)
- M16: 2,466,869 km (0.056 R)
- M17: 2,774,592 km (0.068 R)
- M18: 2,906,387 km (0.112 R)
- M19: 3,067,504 km (0.095 R)
- M20: 3,149,334 km (0.11 R)
- M21: 3,342,764 km (0.063 R)
- M22: 3,455,262 km (0.091 R)
- M23: 3,722,444 km (0.087 R)
- M24: 3,878,325 km (0.061 R)
- M25: 4,056,197 km (0.107 R)
- M26: 4,226,738 km (0.117 R)
- M27: 4,318,143 km (0.108 R)
- M28: 4,523,391 km (0.108 R)
- M29: 4,637,684 km (0.11 R)
- M30: 4,731,781 km (0.083 R)
- M31: 4,986,247 km (0.063 R)
- M32: 5,453,590 km (0.099 R)
- M33: 5,686,963 km (0.088 R)
- M34: 6,117,655 km (0.107 R)
- M35: 6,348,634 km (0.086 R)
- M36: 6,441,834 km (0.042 R)
- M37: 6,523,814 km (0.088 R)
- M38: 7,167,533 km (0.078 R)
- M39: 7,337,925 km (0.111 R)
- M40: 7,448,029 km (0.072 R)
- M41: 7,534,198 km (0.05 R)
- M42: 7,844,314 km (0.09 R)
- M43: 7,956,961 km (0.082 R)
- M44: 8,222,049 km (0.051 R)
- M45: 8,336,491 km (0.1 R)
- M46: 8,425,950 km (0.114 R)
- M47: 8,644,513 km (0.094 R)
Planet 3 - Gas Giant
Semi-Major Axis: 1.3 AU
Status: Outer (Cold)
Composition: Hydrogen/Helium Atmosphere
Physical Data
Mass: 381.8
Radius: 9.5
Gravity: 4.23 G
Time & Orbit
Eccentricity (e): 0.082
Orbit Range: 1.19 AU - 1.41 AU
Year: 957 Days
Day: 5.2 Hours
Environment
Temp: -173 °C
Axial Tilt: 6.3 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (48)
Outer Limit: 39,184,947 km
- M1: 118,930 km (0.051 R)
- M2: 185,651 km (0.063 R)
- M3: 285,283 km (0.107 R)
- M4: 398,828 km (0.09 R)
- M5: 460,612 km (0.113 R)
- M6: 633,996 km (0.033 R)
- M7: 749,785 km (0.07 R)
- M8: 867,668 km (0.039 R)
- M9: 940,522 km (0.079 R)
- M10: 1,033,123 km (0.088 R)
- M11: 1,234,182 km (0.115 R)
- M12: 1,495,231 km (0.105 R)
- M13: 1,904,680 km (0.076 R)
- M14: 2,122,495 km (0.092 R)
- M15: 2,191,758 km (0.082 R)
- M16: 2,277,328 km (0.084 R)
- M17: 2,468,365 km (0.097 R)
- M18: 2,689,471 km (0.087 R)
- M19: 2,874,523 km (0.084 R)
- M20: 3,098,621 km (0.075 R)
- M21: 3,203,938 km (0.106 R)
- M22: 3,301,625 km (0.069 R)
- M23: 3,490,866 km (0.077 R)
- M24: 3,564,020 km (0.106 R)
- M25: 3,767,473 km (0.104 R)
- M26: 3,851,996 km (0.095 R)
- M27: 3,955,966 km (0.079 R)
- M28: 4,176,473 km (0.058 R)
- M29: 4,430,640 km (0.105 R)
- M30: 4,490,030 km (0.119 R)
- M31: 4,559,743 km (0.114 R)
- M32: 4,619,732 km (0.093 R)
- M33: 5,202,715 km (0.105 R)
- M34: 5,561,450 km (0.071 R)
- M35: 5,700,876 km (0.063 R)
- M36: 6,070,831 km (0.115 R)
- M37: 6,314,377 km (0.106 R)
- M38: 6,572,433 km (0.089 R)
- M39: 6,640,350 km (0.059 R)
- M40: 6,811,041 km (0.102 R)
- M41: 7,075,830 km (0.083 R)
- M42: 7,238,592 km (0.065 R)
- M43: 7,332,091 km (0.105 R)
- M44: 7,437,857 km (0.108 R)
- M45: 7,496,948 km (0.085 R)
- M46: 7,770,263 km (0.032 R)
- M47: 8,131,691 km (0.087 R)
- M48: 8,204,695 km (0.096 R)
Planet 4 - Gas Giant
Semi-Major Axis: 1.43 AU
Status: Outer (Cold)
Composition: Hydrogen/Helium Atmosphere
Physical Data
Mass: 647.1
Radius: 14.4
Gravity: 3.12 G
Time & Orbit
Eccentricity (e): 0.188
Orbit Range: 1.16 AU - 1.7 AU
Year: 1104 Days
Day: 13.1 Hours
Environment
Temp: -186 °C
Axial Tilt: 31.1 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (51)
Outer Limit: 39,184,947 km
- M1: 182,809 km (0.032 R)
- M2: 294,558 km (0.117 R)
- M3: 429,047 km (0.107 R)
- M4: 536,159 km (0.08 R)
- M5: 672,293 km (0.11 R)
- M6: 785,239 km (0.066 R)
- M7: 1,046,886 km (0.09 R)
- M8: 1,145,620 km (0.061 R)
- M9: 1,277,566 km (0.071 R)
- M10: 1,446,462 km (0.065 R)
- M11: 1,639,593 km (0.076 R)
- M12: 1,824,346 km (0.1 R)
- M13: 2,016,430 km (0.115 R)
- M14: 2,133,266 km (0.111 R)
- M15: 2,270,896 km (0.079 R)
- M16: 2,402,243 km (0.091 R)
- M17: 2,545,857 km (0.118 R)
- M18: 2,692,462 km (0.095 R)
- M19: 2,882,302 km (0.089 R)
- M20: 3,055,985 km (0.03 R)
- M21: 3,180,750 km (0.047 R)
- M22: 3,349,796 km (0.09 R)
- M23: 3,500,291 km (0.102 R)
- M24: 3,697,162 km (0.116 R)
- M25: 3,965,391 km (0.091 R)
- M26: 4,101,974 km (0.101 R)
- M27: 4,286,577 km (0.083 R)
- M28: 4,403,413 km (0.079 R)
- M29: 4,544,933 km (0.086 R)
- M30: 4,652,195 km (0.077 R)
- M31: 4,760,204 km (0.064 R)
- M32: 4,917,880 km (0.046 R)
- M33: 5,027,984 km (0.117 R)
- M34: 5,188,653 km (0.114 R)
- M35: 5,578,505 km (0.086 R)
- M36: 5,796,469 km (0.093 R)
- M37: 6,017,275 km (0.093 R)
- M38: 6,122,143 km (0.057 R)
- M39: 7,010,605 km (0.101 R)
- M40: 7,190,422 km (0.09 R)
- M41: 7,810,654 km (0.112 R)
- M42: 8,025,926 km (0.076 R)
- M43: 8,477,263 km (0.103 R)
- M44: 8,639,576 km (0.089 R)
- M45: 9,283,445 km (0.11 R)
- M46: 9,420,178 km (0.072 R)
- M47: 9,526,991 km (0.104 R)
- M48: 9,618,844 km (0.118 R)
- M49: 9,757,372 km (0.071 R)
- M50: 9,927,315 km (0.037 R)
- M51: 10,601,702 km (0.06 R)
Planet 5 - Gas Giant
Semi-Major Axis: 1.57 AU
Status: Outer (Cold)
Composition: Hydrogen/Helium Atmosphere
Physical Data
Mass: 662.9
Radius: 13.9
Gravity: 3.43 G
Time & Orbit
Eccentricity (e): 0.14
Orbit Range: 1.35 AU - 1.79 AU
Year: 1270 Days
Day: 8 Hours
Environment
Temp: -185 °C
Axial Tilt: 43.8 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (55)
Outer Limit: 39,184,947 km
- M1: 228,137 km (0.12 R)
- M2: 430,094 km (0.073 R)
- M3: 713,582 km (0.083 R)
- M4: 838,346 km (0.076 R)
- M5: 935,585 km (0.113 R)
- M6: 1,029,832 km (0.118 R)
- M7: 1,158,486 km (0.103 R)
- M8: 1,276,818 km (0.067 R)
- M9: 1,684,322 km (0.099 R)
- M10: 1,774,530 km (0.057 R)
- M11: 1,903,483 km (0.044 R)
- M12: 2,035,877 km (0.102 R)
- M13: 2,132,368 km (0.101 R)
- M14: 2,220,631 km (0.047 R)
- M15: 2,350,482 km (0.052 R)
- M16: 2,441,736 km (0.083 R)
- M17: 2,586,398 km (0.079 R)
- M18: 2,712,658 km (0.037 R)
- M19: 2,873,476 km (0.095 R)
- M20: 3,037,585 km (0.109 R)
- M21: 3,137,516 km (0.115 R)
- M22: 3,409,635 km (0.08 R)
- M23: 3,607,253 km (0.098 R)
- M24: 3,928,889 km (0.091 R)
- M25: 4,222,699 km (0.088 R)
- M26: 4,473,276 km (0.108 R)
- M27: 4,613,150 km (0.09 R)
- M28: 4,702,908 km (0.12 R)
- M29: 5,015,269 km (0.087 R)
- M30: 5,240,713 km (0.107 R)
- M31: 5,550,979 km (0.062 R)
- M32: 5,881,291 km (0.03 R)
- M33: 6,006,953 km (0.051 R)
- M34: 6,275,032 km (0.116 R)
- M35: 6,532,640 km (0.109 R)
- M36: 7,117,567 km (0.108 R)
- M37: 7,206,877 km (0.117 R)
- M38: 7,311,446 km (0.094 R)
- M39: 7,903,405 km (0.106 R)
- M40: 8,119,724 km (0.101 R)
- M41: 8,291,013 km (0.11 R)
- M42: 8,542,338 km (0.072 R)
- M43: 8,637,332 km (0.1 R)
- M44: 8,924,261 km (0.073 R)
- M45: 9,085,079 km (0.093 R)
- M46: 9,344,332 km (0.114 R)
- M47: 9,754,230 km (0.056 R)
- M48: 9,953,195 km (0.088 R)
- M49: 10,136,752 km (0.11 R)
- M50: 10,405,729 km (0.1 R)
- M51: 10,660,045 km (0.106 R)
- M52: 10,916,456 km (0.119 R)
- M53: 11,296,135 km (0.108 R)
- M54: 11,627,644 km (0.035 R)
- M55: 11,962,444 km (0.117 R)
Planet 6 - Gas Giant
Semi-Major Axis: 1.77 AU
Status: Outer (Cold)
Composition: Hydrogen/Helium Atmosphere
Physical Data
Mass: 885.6
Radius: 10.7
Gravity: 7.74 G
Time & Orbit
Eccentricity (e): 0.176
Orbit Range: 1.46 AU - 2.08 AU
Year: 1520 Days
Day: 11 Hours
Environment
Temp: -182 °C
Axial Tilt: 3.8 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (63)
Outer Limit: 39,184,947 km
- M1: 205,847 km (0.082 R)
- M2: 278,551 km (0.097 R)
- M3: 400,324 km (0.105 R)
- M4: 531,072 km (0.037 R)
- M5: 599,289 km (0.111 R)
- M6: 955,482 km (0.092 R)
- M7: 1,032,674 km (0.116 R)
- M8: 1,130,062 km (0.103 R)
- M9: 1,325,138 km (0.087 R)
- M10: 1,431,951 km (0.119 R)
- M11: 1,643,931 km (0.055 R)
- M12: 1,769,743 km (0.098 R)
- M13: 1,898,995 km (0.088 R)
- M14: 2,235,890 km (0.062 R)
- M15: 2,411,518 km (0.103 R)
- M16: 2,507,111 km (0.1 R)
- M17: 2,628,435 km (0.071 R)
- M18: 2,851,934 km (0.108 R)
- M19: 3,042,821 km (0.065 R)
- M20: 3,198,702 km (0.055 R)
- M21: 3,343,961 km (0.066 R)
- M22: 3,765,079 km (0.101 R)
- M23: 3,834,642 km (0.111 R)
- M24: 4,031,663 km (0.111 R)
- M25: 4,160,167 km (0.11 R)
- M26: 4,479,858 km (0.092 R)
- M27: 4,627,810 km (0.038 R)
- M28: 4,702,459 km (0.069 R)
- M29: 4,777,558 km (0.072 R)
- M30: 5,066,281 km (0.108 R)
- M31: 5,282,750 km (0.086 R)
- M32: 5,533,924 km (0.099 R)
- M33: 5,756,975 km (0.102 R)
- M34: 5,885,779 km (0.105 R)
- M35: 6,048,092 km (0.078 R)
- M36: 6,179,140 km (0.068 R)
- M37: 6,327,541 km (0.063 R)
- M38: 6,560,914 km (0.065 R)
- M39: 6,848,142 km (0.054 R)
- M40: 6,933,263 km (0.026 R)
- M41: 7,260,583 km (0.095 R)
- M42: 7,894,429 km (0.091 R)
- M43: 8,218,009 km (0.12 R)
- M44: 9,252,479 km (0.065 R)
- M45: 9,422,571 km (0.077 R)
- M46: 9,498,567 km (0.118 R)
- M47: 9,593,711 km (0.087 R)
- M48: 9,958,431 km (0.096 R)
- M49: 10,074,519 km (0.064 R)
- M50: 10,269,146 km (0.076 R)
- M51: 10,504,314 km (0.105 R)
- M52: 10,800,667 km (0.111 R)
- M53: 10,959,839 km (0.071 R)
- M54: 11,079,817 km (0.111 R)
- M55: 11,665,642 km (0.081 R)
- M56: 11,747,173 km (0.108 R)
- M57: 12,096,185 km (0.074 R)
- M58: 12,344,517 km (0.064 R)
- M59: 12,594,495 km (0.113 R)
- M60: 13,078,594 km (0.072 R)
- M61: 13,504,349 km (0.058 R)
- M62: 14,021,360 km (0.043 R)
- M63: 14,522,961 km (0.116 R)
Planet 7 - Gas Giant
Semi-Major Axis: 4.75 AU
Status: Outer (Cold)
Composition: Hydrogen/Helium Atmosphere
Physical Data
Mass: 837.6
Radius: 12.7
Gravity: 5.19 G
Time & Orbit
Eccentricity (e): 0.237
Orbit Range: 3.62 AU - 5.88 AU
Year: 6684 Days
Day: 11.3 Hours
Environment
Temp: -225 °C
Axial Tilt: 32.6 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (83)
Outer Limit: 39,184,947 km
- M1: 331,060 km (0.08 R)
- M2: 518,207 km (0.08 R)
- M3: 607,367 km (0.062 R)
- M4: 834,756 km (0.098 R)
- M5: 1,008,140 km (0.06 R)
- M6: 1,108,071 km (0.097 R)
- M7: 1,194,090 km (0.118 R)
- M8: 1,410,708 km (0.097 R)
- M9: 1,699,881 km (0.097 R)
- M10: 1,800,560 km (0.046 R)
- M11: 2,158,697 km (0.046 R)
- M12: 2,268,353 km (0.096 R)
- M13: 2,655,661 km (0.072 R)
- M14: 2,821,416 km (0.067 R)
- M15: 2,966,227 km (0.1 R)
- M16: 3,313,892 km (0.103 R)
- M17: 3,466,931 km (0.102 R)
- M18: 3,701,051 km (0.094 R)
- M19: 4,103,021 km (0.115 R)
- M20: 4,462,804 km (0.115 R)
- M21: 4,977,869 km (0.118 R)
- M22: 6,064,548 km (0.106 R)
- M23: 6,474,745 km (0.103 R)
- M24: 6,861,456 km (0.105 R)
- M25: 7,189,524 km (0.107 R)
- M26: 7,288,857 km (0.064 R)
- M27: 7,759,043 km (0.117 R)
- M28: 8,447,642 km (0.081 R)
- M29: 8,905,860 km (0.1 R)
- M30: 9,191,892 km (0.079 R)
- M31: 9,408,360 km (0.115 R)
- M32: 10,216,787 km (0.069 R)
- M33: 10,441,183 km (0.088 R)
- M34: 10,629,378 km (0.118 R)
- M35: 11,509,611 km (0.077 R)
- M36: 12,056,990 km (0.1 R)
- M37: 12,773,265 km (0.066 R)
- M38: 12,974,623 km (0.108 R)
- M39: 13,258,410 km (0.112 R)
- M40: 13,339,792 km (0.09 R)
- M41: 15,258,983 km (0.117 R)
- M42: 15,387,188 km (0.119 R)
- M43: 15,687,581 km (0.048 R)
- M44: 15,773,749 km (0.087 R)
- M45: 15,903,301 km (0.045 R)
- M46: 16,033,301 km (0.079 R)
- M47: 16,820,485 km (0.1 R)
- M48: 17,263,145 km (0.07 R)
- M49: 17,441,317 km (0.118 R)
- M50: 18,069,777 km (0.033 R)
- M51: 18,432,253 km (0.091 R)
- M52: 18,705,718 km (0.069 R)
- M53: 18,888,676 km (0.119 R)
- M54: 19,441,440 km (0.113 R)
- M55: 19,534,041 km (0.113 R)
- M56: 20,751,618 km (0.065 R)
- M57: 21,274,164 km (0.034 R)
- M58: 21,369,757 km (0.046 R)
- M59: 21,993,729 km (0.071 R)
- M60: 22,623,836 km (0.068 R)
- M61: 24,299,781 km (0.085 R)
- M62: 24,951,130 km (0.049 R)
- M63: 26,373,506 km (0.088 R)
- M64: 28,766,773 km (0.106 R)
- M65: 28,872,539 km (0.068 R)
- M66: 29,190,135 km (0.028 R)
- M67: 29,402,564 km (0.105 R)
- M68: 29,562,185 km (0.068 R)
- M69: 29,989,436 km (0.113 R)
- M70: 30,418,633 km (0.109 R)
- M71: 31,120,546 km (0.067 R)
- M72: 31,446,220 km (0.115 R)
- M73: 32,595,132 km (0.043 R)
- M74: 32,705,236 km (0.08 R)
- M75: 33,368,703 km (0.102 R)
- M76: 33,590,855 km (0.109 R)
- M77: 34,092,607 km (0.046 R)
- M78: 34,821,448 km (0.03 R)
- M79: 35,612,222 km (0.036 R)
- M80: 37,154,127 km (0.103 R)
- M81: 38,078,044 km (0.102 R)
- M82: 38,426,457 km (0.046 R)
- M83: 38,834,261 km (0.075 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: 419 - 14,855 AU
Composition
Type: Cometary Reservoir
System's final boundary, containing trillions of icy planetesimals.