Star System Generated (Seed: 1766583063)
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 (6 Planets)
Planet 1 - Gas Giant
Semi-Major Axis: 0.56 AU
Status: Outer (Cold)
Composition: Hydrogen/Helium Atmosphere
Physical Data
Mass: 575.5
Radius: 8.9
Gravity: 7.27 G
Time & Orbit
Eccentricity (e): 0.096
Orbit Range: 0.51 AU - 0.61 AU
Year: 289 Days
Day: 9.5 Hours
Environment
Temp: -142 °C
Axial Tilt: 22.6 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (42)
Outer Limit: 42,281,425 km
- M1: 154,385 km (0.099 R)
- M2: 209,886 km (0.111 R)
- M3: 298,597 km (0.091 R)
- M4: 359,184 km (0.113 R)
- M5: 468,092 km (0.073 R)
- M6: 661,073 km (0.109 R)
- M7: 725,699 km (0.113 R)
- M8: 834,158 km (0.044 R)
- M9: 926,460 km (0.12 R)
- M10: 988,692 km (0.066 R)
- M11: 1,075,459 km (0.11 R)
- M12: 1,248,693 km (0.107 R)
- M13: 1,342,940 km (0.112 R)
- M14: 1,495,530 km (0.073 R)
- M15: 1,582,745 km (0.115 R)
- M16: 1,649,466 km (0.093 R)
- M17: 1,716,935 km (0.086 R)
- M18: 1,780,963 km (0.072 R)
- M19: 1,930,112 km (0.119 R)
- M20: 1,987,258 km (0.087 R)
- M21: 2,044,853 km (0.107 R)
- M22: 2,112,771 km (0.067 R)
- M23: 2,191,459 km (0.104 R)
- M24: 2,266,109 km (0.102 R)
- M25: 2,321,460 km (0.105 R)
- M26: 2,448,768 km (0.101 R)
- M27: 2,552,439 km (0.083 R)
- M28: 2,631,127 km (0.061 R)
- M29: 2,726,571 km (0.065 R)
- M30: 2,796,283 km (0.115 R)
- M31: 2,871,980 km (0.078 R)
- M32: 2,959,495 km (0.091 R)
- M33: 3,109,093 km (0.099 R)
- M34: 3,204,536 km (0.113 R)
- M35: 3,266,769 km (0.106 R)
- M36: 3,596,183 km (0.045 R)
- M37: 3,672,927 km (0.041 R)
- M38: 3,744,136 km (0.099 R)
- M39: 3,942,502 km (0.104 R)
- M40: 4,033,757 km (0.074 R)
- M41: 4,101,226 km (0.076 R)
- M42: 4,212,227 km (0.118 R)
Planet 2 - Gas Giant
Semi-Major Axis: 1.51 AU
Status: Outer (Cold)
Composition: Hydrogen/Helium Atmosphere
Physical Data
Mass: 420.1
Radius: 14.7
Gravity: 1.94 G
Time & Orbit
Eccentricity (e): 0.193
Orbit Range: 1.22 AU - 1.8 AU
Year: 1281 Days
Day: 7.7 Hours
Environment
Temp: -195 °C
Axial Tilt: 36.5 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (52)
Outer Limit: 42,281,425 km
- M1: 187,596 km (0.072 R)
- M2: 489,933 km (0.105 R)
- M3: 594,801 km (0.085 R)
- M4: 773,271 km (0.092 R)
- M5: 870,360 km (0.116 R)
- M6: 1,064,838 km (0.087 R)
- M7: 1,181,973 km (0.12 R)
- M8: 1,289,384 km (0.054 R)
- M9: 1,392,906 km (0.075 R)
- M10: 1,499,419 km (0.056 R)
- M11: 1,664,725 km (0.037 R)
- M12: 2,005,659 km (0.073 R)
- M13: 2,100,952 km (0.083 R)
- M14: 2,424,233 km (0.057 R)
- M15: 2,554,533 km (0.114 R)
- M16: 2,677,503 km (0.111 R)
- M17: 2,792,992 km (0.1 R)
- M18: 2,890,530 km (0.081 R)
- M19: 3,374,778 km (0.068 R)
- M20: 3,479,048 km (0.052 R)
- M21: 3,626,701 km (0.097 R)
- M22: 3,722,893 km (0.052 R)
- M23: 4,049,465 km (0.079 R)
- M24: 4,171,686 km (0.114 R)
- M25: 4,374,242 km (0.101 R)
- M26: 4,476,716 km (0.054 R)
- M27: 4,637,983 km (0.118 R)
- M28: 5,013,623 km (0.087 R)
- M29: 5,193,290 km (0.092 R)
- M30: 5,485,006 km (0.098 R)
- M31: 5,670,208 km (0.074 R)
- M32: 5,958,184 km (0.114 R)
- M33: 6,174,203 km (0.1 R)
- M34: 6,444,676 km (0.105 R)
- M35: 6,548,796 km (0.09 R)
- M36: 6,640,350 km (0.034 R)
- M37: 6,798,176 km (0.099 R)
- M38: 7,010,755 km (0.106 R)
- M39: 7,158,109 km (0.111 R)
- M40: 7,360,814 km (0.117 R)
- M41: 7,606,603 km (0.103 R)
- M42: 7,702,944 km (0.037 R)
- M43: 7,896,823 km (0.111 R)
- M44: 8,050,310 km (0.069 R)
- M45: 8,402,912 km (0.101 R)
- M46: 8,545,330 km (0.106 R)
- M47: 8,688,644 km (0.116 R)
- M48: 8,789,473 km (0.104 R)
- M49: 8,919,623 km (0.107 R)
- M50: 9,313,814 km (0.086 R)
- M51: 9,431,847 km (0.052 R)
- M52: 9,953,794 km (0.104 R)
Planet 3 - Gas Giant
Semi-Major Axis: 1.83 AU
Status: Outer (Cold)
Composition: Hydrogen/Helium Atmosphere
Physical Data
Mass: 802.2
Radius: 12.2
Gravity: 5.39 G
Time & Orbit
Eccentricity (e): 0.17
Orbit Range: 1.52 AU - 2.14 AU
Year: 1709 Days
Day: 14.2 Hours
Environment
Temp: -193 °C
Axial Tilt: 41.8 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (62)
Outer Limit: 42,281,425 km
- M1: 155,582 km (0.105 R)
- M2: 231,727 km (0.047 R)
- M3: 313,707 km (0.082 R)
- M4: 412,890 km (0.058 R)
- M5: 520,152 km (0.114 R)
- M6: 661,073 km (0.075 R)
- M7: 776,263 km (0.09 R)
- M8: 882,179 km (0.109 R)
- M9: 984,803 km (0.044 R)
- M10: 1,082,789 km (0.051 R)
- M11: 1,212,640 km (0.089 R)
- M12: 1,289,234 km (0.106 R)
- M13: 1,571,226 km (0.091 R)
- M14: 1,741,469 km (0.079 R)
- M15: 1,997,132 km (0.104 R)
- M16: 2,112,322 km (0.108 R)
- M17: 2,217,788 km (0.106 R)
- M18: 2,301,114 km (0.072 R)
- M19: 2,483,474 km (0.059 R)
- M20: 2,708,619 km (0.093 R)
- M21: 2,785,213 km (0.03 R)
- M22: 3,382,857 km (0.033 R)
- M23: 3,732,168 km (0.088 R)
- M24: 4,019,994 km (0.101 R)
- M25: 4,240,800 km (0.054 R)
- M26: 4,602,378 km (0.089 R)
- M27: 5,036,960 km (0.106 R)
- M28: 5,419,931 km (0.101 R)
- M29: 5,533,476 km (0.095 R)
- M30: 5,878,897 km (0.112 R)
- M31: 6,265,159 km (0.106 R)
- M32: 6,521,719 km (0.084 R)
- M33: 7,240,537 km (0.059 R)
- M34: 7,347,799 km (0.036 R)
- M35: 7,819,032 km (0.089 R)
- M36: 7,965,937 km (0.066 R)
- M37: 8,095,339 km (0.093 R)
- M38: 8,206,790 km (0.045 R)
- M39: 8,431,186 km (0.075 R)
- M40: 8,828,818 km (0.107 R)
- M41: 9,078,197 km (0.117 R)
- M42: 9,329,821 km (0.081 R)
- M43: 9,623,033 km (0.11 R)
- M44: 9,859,696 km (0.081 R)
- M45: 10,118,501 km (0.06 R)
- M46: 10,298,916 km (0.114 R)
- M47: 10,399,595 km (0.059 R)
- M48: 11,466,228 km (0.076 R)
- M49: 11,675,366 km (0.081 R)
- M50: 11,991,466 km (0.108 R)
- M51: 12,225,138 km (0.082 R)
- M52: 12,653,736 km (0.046 R)
- M53: 12,869,905 km (0.101 R)
- M54: 13,043,738 km (0.086 R)
- M55: 13,415,638 km (0.093 R)
- M56: 13,591,864 km (0.099 R)
- M57: 13,702,567 km (0.071 R)
- M58: 13,902,280 km (0.11 R)
- M59: 14,327,138 km (0.074 R)
- M60: 14,688,267 km (0.111 R)
- M61: 15,029,649 km (0.116 R)
- M62: 15,350,537 km (0.077 R)
Planet 4 - Ice Giant
Semi-Major Axis: 6.77 AU
Status: Outer (Cold)
Composition: Methane/Ammonia Ices
Physical Data
Mass: 974.3
Radius: 7.6
Gravity: 16.87 G
Time & Orbit
Eccentricity (e): 0.178
Orbit Range: 5.56 AU - 7.98 AU
Year: 12159 Days
Day: 15.1 Hours
Environment
Temp: -220 °C
Axial Tilt: 43.3 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (91)
Outer Limit: 42,281,425 km
- M1: 96,491 km (0.067 R)
- M2: 185,352 km (0.103 R)
- M3: 267,930 km (0.1 R)
- M4: 351,555 km (0.078 R)
- M5: 413,040 km (0.12 R)
- M6: 1,230,143 km (0.084 R)
- M7: 1,456,036 km (0.1 R)
- M8: 1,507,947 km (0.106 R)
- M9: 1,777,671 km (0.075 R)
- M10: 2,707,273 km (0.074 R)
- M11: 2,804,212 km (0.075 R)
- M12: 2,869,586 km (0.109 R)
- M13: 2,935,409 km (0.12 R)
- M14: 3,135,871 km (0.086 R)
- M15: 3,375,377 km (0.1 R)
- M16: 3,444,940 km (0.117 R)
- M17: 3,621,016 km (0.112 R)
- M18: 3,763,882 km (0.066 R)
- M19: 5,414,994 km (0.073 R)
- M20: 5,994,985 km (0.076 R)
- M21: 6,594,873 km (0.107 R)
- M22: 6,769,752 km (0.052 R)
- M23: 7,034,989 km (0.099 R)
- M24: 7,258,489 km (0.113 R)
- M25: 7,804,820 km (0.109 R)
- M26: 8,458,862 km (0.091 R)
- M27: 8,506,285 km (0.105 R)
- M28: 10,169,514 km (0.051 R)
- M29: 12,089,752 km (0.094 R)
- M30: 12,736,015 km (0.075 R)
- M31: 13,173,140 km (0.115 R)
- M32: 13,504,349 km (0.114 R)
- M33: 13,670,852 km (0.071 R)
- M34: 14,006,101 km (0.113 R)
- M35: 15,547,856 km (0.109 R)
- M36: 15,839,123 km (0.076 R)
- M37: 16,191,277 km (0.076 R)
- M38: 17,022,742 km (0.028 R)
- M39: 18,726,961 km (0.081 R)
- M40: 19,099,160 km (0.106 R)
- M41: 19,536,435 km (0.114 R)
- M42: 20,740,249 km (0.029 R)
- M43: 21,837,400 km (0.099 R)
- M44: 22,360,244 km (0.054 R)
- M45: 22,755,183 km (0.094 R)
- M46: 23,351,779 km (0.09 R)
- M47: 23,551,791 km (0.11 R)
- M48: 23,685,382 km (0.093 R)
- M49: 24,020,631 km (0.113 R)
- M50: 25,308,968 km (0.074 R)
- M51: 26,203,264 km (0.091 R)
- M52: 26,272,528 km (0.087 R)
- M53: 26,550,032 km (0.045 R)
- M54: 26,619,445 km (0.078 R)
- M55: 26,689,158 km (0.098 R)
- M56: 26,968,008 km (0.096 R)
- M57: 28,022,823 km (0.061 R)
- M58: 29,593,900 km (0.057 R)
- M59: 30,099,840 km (0.108 R)
- M60: 30,390,209 km (0.115 R)
- M61: 31,193,550 km (0.077 R)
- M62: 31,929,870 km (0.108 R)
- M63: 32,746,525 km (0.071 R)
- M64: 33,795,655 km (0.05 R)
- M65: 34,551,872 km (0.078 R)
- M66: 36,080,912 km (0.091 R)
- M67: 36,234,998 km (0.105 R)
- M68: 36,776,243 km (0.07 R)
- M69: 37,631,943 km (0.108 R)
- M70: 38,415,536 km (0.09 R)
- M71: 39,521,663 km (0.083 R)
- M72: 40,238,237 km (0.053 R)
- M73: 42,657,833 km (0.108 R)
- M74: 43,720,875 km (0.062 R)
- M75: 44,709,867 km (0.095 R)
- M76: 46,458,217 km (0.112 R)
- M77: 47,045,987 km (0.1 R)
- M78: 47,130,211 km (0.098 R)
- M79: 47,636,300 km (0.116 R)
- M80: 48,738,837 km (0.098 R)
- M81: 48,909,229 km (0.043 R)
- M82: 50,021,638 km (0.047 R)
- M83: 50,537,751 km (0.056 R)
- M84: 53,496,049 km (0.107 R)
- M85: 55,084,778 km (0.108 R)
- M86: 56,778,525 km (0.033 R)
- M87: 57,137,261 km (0.111 R)
- M88: 57,496,745 km (0.086 R)
- M89: 57,857,126 km (0.052 R)
- M90: 58,037,541 km (0.062 R)
- M91: 60,125,628 km (0.113 R)
Planet 5 - Ice Giant
Semi-Major Axis: 7.67 AU
Status: Outer (Cold)
Composition: Methane/Ammonia Ices
Physical Data
Mass: 263.1
Radius: 7.3
Gravity: 4.94 G
Time & Orbit
Eccentricity (e): 0.211
Orbit Range: 6.05 AU - 9.29 AU
Year: 14662 Days
Day: 24.6 Hours
Environment
Temp: -241 °C
Axial Tilt: 121.7 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (94)
Outer Limit: 42,281,425 km
- M1: 257,608 km (0.12 R)
- M2: 519,254 km (0.053 R)
- M3: 622,926 km (0.084 R)
- M4: 766,988 km (0.119 R)
- M5: 869,014 km (0.066 R)
- M6: 994,227 km (0.107 R)
- M7: 1,242,410 km (0.063 R)
- M8: 1,343,090 km (0.053 R)
- M9: 1,404,874 km (0.096 R)
- M10: 1,661,584 km (0.102 R)
- M11: 1,818,213 km (0.064 R)
- M12: 2,292,139 km (0.096 R)
- M13: 2,416,454 km (0.1 R)
- M14: 2,543,164 km (0.092 R)
- M15: 2,594,326 km (0.103 R)
- M16: 2,671,968 km (0.079 R)
- M17: 3,125,997 km (0.094 R)
- M18: 3,292,051 km (0.064 R)
- M19: 3,661,857 km (0.046 R)
- M20: 3,807,565 km (0.087 R)
- M21: 4,104,816 km (0.073 R)
- M22: 4,976,672 km (0.025 R)
- M23: 5,170,701 km (0.112 R)
- M24: 5,268,687 km (0.098 R)
- M25: 5,466,605 km (0.074 R)
- M26: 6,457,093 km (0.043 R)
- M27: 6,918,902 km (0.115 R)
- M28: 7,063,114 km (0.06 R)
- M29: 7,172,021 km (0.069 R)
- M30: 7,538,835 km (0.092 R)
- M31: 7,761,886 km (0.105 R)
- M32: 8,062,727 km (0.061 R)
- M33: 8,138,573 km (0.093 R)
- M34: 9,185,010 km (0.102 R)
- M35: 9,905,922 km (0.101 R)
- M36: 10,396,603 km (0.102 R)
- M37: 12,262,687 km (0.105 R)
- M38: 12,481,100 km (0.071 R)
- M39: 13,010,826 km (0.064 R)
- M40: 13,368,066 km (0.103 R)
- M41: 13,457,974 km (0.056 R)
- M42: 15,061,813 km (0.114 R)
- M43: 15,342,907 km (0.093 R)
- M44: 15,815,038 km (0.1 R)
- M45: 16,436,019 km (0.077 R)
- M46: 17,016,309 km (0.086 R)
- M47: 17,357,841 km (0.119 R)
- M48: 18,147,119 km (0.105 R)
- M49: 18,396,200 km (0.06 R)
- M50: 19,760,532 km (0.111 R)
- M51: 20,068,106 km (0.106 R)
- M52: 20,222,491 km (0.106 R)
- M53: 20,429,085 km (0.085 R)
- M54: 20,844,070 km (0.094 R)
- M55: 20,948,339 km (0.099 R)
- M56: 22,371,913 km (0.049 R)
- M57: 22,638,945 km (0.092 R)
- M58: 22,907,024 km (0.058 R)
- M59: 23,935,510 km (0.111 R)
- M60: 24,592,693 km (0.115 R)
- M61: 24,978,805 km (0.111 R)
- M62: 25,034,156 km (0.047 R)
- M63: 26,261,607 km (0.054 R)
- M64: 26,996,133 km (0.103 R)
- M65: 28,024,319 km (0.046 R)
- M66: 28,312,295 km (0.052 R)
- M67: 28,716,957 km (0.116 R)
- M68: 29,415,130 km (0.113 R)
- M69: 30,001,255 km (0.072 R)
- M70: 30,118,839 km (0.096 R)
- M71: 31,125,333 km (0.112 R)
- M72: 31,244,413 km (0.074 R)
- M73: 31,543,010 km (0.1 R)
- M74: 31,722,528 km (0.038 R)
- M75: 33,171,233 km (0.118 R)
- M76: 34,087,520 km (0.118 R)
- M77: 34,271,825 km (0.057 R)
- M78: 34,333,310 km (0.059 R)
- M79: 35,012,185 km (0.076 R)
- M80: 35,695,398 km (0.115 R)
- M81: 36,132,523 km (0.114 R)
- M82: 36,949,028 km (0.102 R)
- M83: 37,201,550 km (0.066 R)
- M84: 37,708,088 km (0.107 R)
- M85: 37,771,667 km (0.103 R)
- M86: 38,920,429 km (0.104 R)
- M87: 39,499,223 km (0.039 R)
- M88: 39,951,308 km (0.077 R)
- M89: 41,187,136 km (0.098 R)
- M90: 41,514,456 km (0.11 R)
- M91: 42,171,490 km (0.12 R)
- M92: 42,303,435 km (0.095 R)
- M93: 42,435,381 km (0.056 R)
- M94: 43,230,194 km (0.092 R)
Asteroid Belt
Center: 8.24 AU
Composition
Type: Outer System (Icy)
A dense region of planetesimals and debris.
Boundary
Planet 6 - Ice Giant
Semi-Major Axis: 8.8 AU
Status: Outer (Cold)
Composition: Methane/Ammonia Ices
Physical Data
Mass: 144.8
Radius: 7.5
Gravity: 2.57 G
Time & Orbit
Eccentricity (e): 0.053
Orbit Range: 8.33 AU - 9.27 AU
Year: 18019 Days
Day: 17.2 Hours
Environment
Temp: -227 °C
Axial Tilt: 46.3 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (83)
Outer Limit: 42,281,425 km
- M1: 163,211 km (0.109 R)
- M2: 682,615 km (0.082 R)
- M3: 1,083,837 km (0.048 R)
- M4: 1,611,468 km (0.058 R)
- M5: 1,957,787 km (0.096 R)
- M6: 2,047,995 km (0.094 R)
- M7: 2,232,599 km (0.1 R)
- M8: 2,303,209 km (0.116 R)
- M9: 3,024,271 km (0.094 R)
- M10: 3,155,318 km (0.1 R)
- M11: 3,614,883 km (0.07 R)
- M12: 3,951,927 km (0.111 R)
- M13: 4,095,391 km (0.07 R)
- M14: 4,446,647 km (0.079 R)
- M15: 4,565,877 km (0.065 R)
- M16: 5,398,389 km (0.044 R)
- M17: 5,525,846 km (0.085 R)
- M18: 5,815,916 km (0.087 R)
- M19: 6,784,263 km (0.071 R)
- M20: 7,909,838 km (0.094 R)
- M21: 8,236,709 km (0.114 R)
- M22: 9,167,956 km (0.105 R)
- M23: 9,396,392 km (0.105 R)
- M24: 9,742,561 km (0.07 R)
- M25: 10,132,264 km (0.115 R)
- M26: 10,328,835 km (0.103 R)
- M27: 10,886,387 km (0.1 R)
- M28: 10,966,870 km (0.085 R)
- M29: 11,168,827 km (0.03 R)
- M30: 12,280,788 km (0.081 R)
- M31: 13,255,419 km (0.11 R)
- M32: 13,817,308 km (0.071 R)
- M33: 14,123,086 km (0.107 R)
- M34: 14,298,864 km (0.085 R)
- M35: 15,053,735 km (0.079 R)
- M36: 15,776,143 km (0.118 R)
- M37: 16,555,996 km (0.046 R)
- M38: 17,772,825 km (0.099 R)
- M39: 17,820,248 km (0.043 R)
- M40: 18,010,237 km (0.109 R)
- M41: 18,105,381 km (0.034 R)
- M42: 18,776,627 km (0.072 R)
- M43: 19,018,377 km (0.097 R)
- M44: 19,066,847 km (0.117 R)
- M45: 19,995,401 km (0.08 R)
- M46: 20,539,788 km (0.113 R)
- M47: 20,788,719 km (0.088 R)
- M48: 22,099,944 km (0.078 R)
- M49: 22,201,820 km (0.048 R)
- M50: 22,868,428 km (0.113 R)
- M51: 23,697,799 km (0.087 R)
- M52: 25,066,470 km (0.119 R)
- M53: 25,119,577 km (0.111 R)
- M54: 25,653,192 km (0.064 R)
- M55: 26,028,982 km (0.116 R)
- M56: 26,082,838 km (0.112 R)
- M57: 26,352,563 km (0.111 R)
- M58: 27,167,123 km (0.055 R)
- M59: 27,495,341 km (0.052 R)
- M60: 27,990,061 km (0.103 R)
- M61: 28,045,113 km (0.118 R)
- M62: 28,155,516 km (0.048 R)
- M63: 28,432,272 km (0.04 R)
- M64: 28,654,126 km (0.115 R)
- M65: 28,876,727 km (0.089 R)
- M66: 29,323,576 km (0.053 R)
- M67: 30,905,424 km (0.073 R)
- M68: 31,133,710 km (0.119 R)
- M69: 31,190,857 km (0.076 R)
- M70: 31,362,446 km (0.061 R)
- M71: 31,879,306 km (0.113 R)
- M72: 33,446,643 km (0.032 R)
- M73: 33,680,913 km (0.051 R)
- M74: 34,564,588 km (0.085 R)
- M75: 35,336,513 km (0.093 R)
- M76: 35,634,961 km (0.036 R)
- M77: 36,836,980 km (0.082 R)
- M78: 37,503,737 km (0.114 R)
- M79: 38,849,221 km (0.053 R)
- M80: 38,910,705 km (0.096 R)
- M81: 38,972,340 km (0.107 R)
- M82: 41,147,493 km (0.101 R)
- M83: 41,524,330 km (0.09 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: 182 - 15,621 AU
Composition
Type: Cometary Reservoir
System's final boundary, containing trillions of icy planetesimals.