Star System Generated (Seed: 1766138929)
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: 0.53 AU
Status: Outer (Cold)
Composition: Hydrogen/Helium Atmosphere
Physical Data
Mass: 477.5
Radius: 11.9
Gravity: 3.37 G
Time & Orbit
Eccentricity (e): 0.163
Orbit Range: 0.44 AU - 0.62 AU
Year: 266 Days
Day: 8.1 Hours
Environment
Temp: -139 °C
Axial Tilt: 34.8 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (35)
Outer Limit: 80,779,206 km
- M1: 148,850 km (0.049 R)
- M2: 241,451 km (0.096 R)
- M3: 320,738 km (0.108 R)
- M4: 405,560 km (0.09 R)
- M5: 513,569 km (0.088 R)
- M6: 616,942 km (0.075 R)
- M7: 702,212 km (0.096 R)
- M8: 844,779 km (0.092 R)
- M9: 974,331 km (0.061 R)
- M10: 1,121,685 km (0.051 R)
- M11: 1,210,995 km (0.104 R)
- M12: 1,317,808 km (0.111 R)
- M13: 1,428,061 km (0.071 R)
- M14: 1,521,710 km (0.099 R)
- M15: 1,597,406 km (0.096 R)
- M16: 1,844,991 km (0.037 R)
- M17: 1,964,968 km (0.039 R)
- M18: 2,056,821 km (0.059 R)
- M19: 2,136,557 km (0.055 R)
- M20: 2,235,591 km (0.057 R)
- M21: 2,363,946 km (0.098 R)
- M22: 2,523,267 km (0.116 R)
- M23: 2,623,348 km (0.107 R)
- M24: 2,734,649 km (0.111 R)
- M25: 2,837,722 km (0.092 R)
- M26: 2,917,158 km (0.081 R)
- M27: 2,997,343 km (0.117 R)
- M28: 3,144,547 km (0.071 R)
- M29: 3,221,740 km (0.096 R)
- M30: 3,299,381 km (0.055 R)
- M31: 3,419,957 km (0.099 R)
- M32: 3,499,393 km (0.109 R)
- M33: 3,574,043 km (0.083 R)
- M34: 3,649,141 km (0.083 R)
- M35: 3,762,985 km (0.093 R)
Planet 2 - Gas Giant
Semi-Major Axis: 1.58 AU
Status: Outer (Cold)
Composition: Hydrogen/Helium Atmosphere
Physical Data
Mass: 453.6
Radius: 12.2
Gravity: 3.05 G
Time & Orbit
Eccentricity (e): 0.139
Orbit Range: 1.36 AU - 1.8 AU
Year: 1371 Days
Day: 9.9 Hours
Environment
Temp: -183 °C
Axial Tilt: 9.8 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (46)
Outer Limit: 80,779,206 km
- M1: 333,304 km (0.072 R)
- M2: 677,080 km (0.051 R)
- M3: 756,666 km (0.052 R)
- M4: 940,073 km (0.08 R)
- M5: 1,066,334 km (0.106 R)
- M6: 1,431,801 km (0.092 R)
- M7: 1,521,261 km (0.112 R)
- M8: 1,604,138 km (0.102 R)
- M9: 1,766,302 km (0.098 R)
- M10: 2,162,886 km (0.096 R)
- M11: 2,247,558 km (0.072 R)
- M12: 2,567,698 km (0.115 R)
- M13: 2,677,802 km (0.102 R)
- M14: 3,017,539 km (0.109 R)
- M15: 3,197,954 km (0.109 R)
- M16: 3,316,734 km (0.105 R)
- M17: 3,503,133 km (0.059 R)
- M18: 3,840,776 km (0.063 R)
- M19: 3,932,629 km (0.053 R)
- M20: 4,523,391 km (0.085 R)
- M21: 4,755,268 km (0.087 R)
- M22: 4,991,183 km (0.105 R)
- M23: 5,078,997 km (0.112 R)
- M24: 5,853,465 km (0.078 R)
- M25: 5,986,159 km (0.087 R)
- M26: 6,119,899 km (0.047 R)
- M27: 6,458,589 km (0.114 R)
- M28: 6,540,718 km (0.059 R)
- M29: 6,747,762 km (0.118 R)
- M30: 6,929,074 km (0.109 R)
- M31: 7,055,484 km (0.034 R)
- M32: 7,296,337 km (0.104 R)
- M33: 7,511,159 km (0.104 R)
- M34: 7,742,587 km (0.089 R)
- M35: 8,050,011 km (0.097 R)
- M36: 8,227,584 km (0.084 R)
- M37: 8,707,194 km (0.054 R)
- M38: 8,828,668 km (0.113 R)
- M39: 9,057,702 km (0.112 R)
- M40: 9,304,240 km (0.114 R)
- M41: 9,882,735 km (0.119 R)
- M42: 10,009,444 km (0.086 R)
- M43: 10,264,359 km (0.084 R)
- M44: 10,521,517 km (0.108 R)
- M45: 10,862,152 km (0.103 R)
- M46: 11,107,791 km (0.119 R)
Planet 3 - Gas Giant
Semi-Major Axis: 1.93 AU
Status: Outer (Cold)
Composition: Hydrogen/Helium Atmosphere
Physical Data
Mass: 455.8
Radius: 9
Gravity: 5.63 G
Time & Orbit
Eccentricity (e): 0.123
Orbit Range: 1.69 AU - 2.17 AU
Year: 1851 Days
Day: 10.5 Hours
Environment
Temp: -210 °C
Axial Tilt: 32.7 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (67)
Outer Limit: 80,779,206 km
- M1: 112,348 km (0.026 R)
- M2: 181,911 km (0.117 R)
- M3: 244,892 km (0.11 R)
- M4: 361,578 km (0.071 R)
- M5: 422,614 km (0.07 R)
- M6: 596,896 km (0.12 R)
- M7: 743,651 km (0.061 R)
- M8: 863,778 km (0.102 R)
- M9: 926,460 km (0.105 R)
- M10: 1,007,093 km (0.106 R)
- M11: 1,141,282 km (0.096 R)
- M12: 1,290,431 km (0.047 R)
- M13: 1,427,612 km (0.056 R)
- M14: 1,483,861 km (0.072 R)
- M15: 1,588,879 km (0.117 R)
- M16: 1,868,029 km (0.079 R)
- M17: 2,151,816 km (0.106 R)
- M18: 2,293,485 km (0.107 R)
- M19: 2,415,856 km (0.051 R)
- M20: 2,690,219 km (0.075 R)
- M21: 2,878,861 km (0.084 R)
- M22: 3,059,725 km (0.068 R)
- M23: 3,145,445 km (0.12 R)
- M24: 3,344,260 km (0.11 R)
- M25: 4,153,435 km (0.086 R)
- M26: 4,221,353 km (0.084 R)
- M27: 4,427,199 km (0.071 R)
- M28: 4,734,922 km (0.026 R)
- M29: 4,834,405 km (0.106 R)
- M30: 4,891,551 km (0.11 R)
- M31: 4,992,081 km (0.099 R)
- M32: 5,268,388 km (0.067 R)
- M33: 5,564,742 km (0.047 R)
- M34: 5,714,938 km (0.086 R)
- M35: 5,835,963 km (0.096 R)
- M36: 6,019,370 km (0.031 R)
- M37: 6,111,671 km (0.101 R)
- M38: 6,220,130 km (0.071 R)
- M39: 6,360,453 km (0.097 R)
- M40: 6,485,965 km (0.113 R)
- M41: 6,819,569 km (0.096 R)
- M42: 7,175,163 km (0.12 R)
- M43: 7,256,843 km (0.065 R)
- M44: 7,355,279 km (0.068 R)
- M45: 7,536,741 km (0.109 R)
- M46: 7,786,719 km (0.102 R)
- M47: 8,124,361 km (0.081 R)
- M48: 8,657,079 km (0.092 R)
- M49: 8,883,870 km (0.093 R)
- M50: 9,147,910 km (0.101 R)
- M51: 9,236,621 km (0.088 R)
- M52: 9,486,300 km (0.085 R)
- M53: 9,557,958 km (0.084 R)
- M54: 9,828,580 km (0.111 R)
- M55: 10,083,495 km (0.109 R)
- M56: 10,156,798 km (0.099 R)
- M57: 10,469,906 km (0.05 R)
- M58: 10,880,104 km (0.11 R)
- M59: 10,992,751 km (0.116 R)
- M60: 11,143,695 km (0.117 R)
- M61: 11,447,678 km (0.113 R)
- M62: 11,581,568 km (0.118 R)
- M63: 11,889,440 km (0.096 R)
- M64: 12,710,433 km (0.053 R)
- M65: 12,908,651 km (0.112 R)
- M66: 13,088,019 km (0.074 R)
- M67: 13,288,031 km (0.092 R)
Planet 4 - Gas Giant
Semi-Major Axis: 5.5 AU
Status: Outer (Cold)
Composition: Hydrogen/Helium Atmosphere
Physical Data
Mass: 430.4
Radius: 8.1
Gravity: 6.56 G
Time & Orbit
Eccentricity (e): 0.053
Orbit Range: 5.21 AU - 5.79 AU
Year: 8903 Days
Day: 6.4 Hours
Environment
Temp: -232 °C
Axial Tilt: 1.8 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (89)
Outer Limit: 80,779,206 km
- M1: 177,423 km (0.117 R)
- M2: 259,552 km (0.057 R)
- M3: 426,952 km (0.106 R)
- M4: 602,879 km (0.093 R)
- M5: 699,968 km (0.097 R)
- M6: 757,863 km (0.102 R)
- M7: 1,106,875 km (0.101 R)
- M8: 1,227,899 km (0.101 R)
- M9: 1,371,663 km (0.075 R)
- M10: 1,445,714 km (0.098 R)
- M11: 1,695,692 km (0.08 R)
- M12: 1,836,164 km (0.106 R)
- M13: 1,918,144 km (0.119 R)
- M14: 2,710,115 km (0.078 R)
- M15: 2,922,544 km (0.085 R)
- M16: 3,018,735 km (0.081 R)
- M17: 3,116,124 km (0.107 R)
- M18: 3,288,760 km (0.103 R)
- M19: 3,592,294 km (0.089 R)
- M20: 3,695,516 km (0.072 R)
- M21: 4,226,289 km (0.031 R)
- M22: 4,445,301 km (0.095 R)
- M23: 4,584,128 km (0.064 R)
- M24: 4,951,690 km (0.114 R)
- M25: 5,124,625 km (0.083 R)
- M26: 5,241,012 km (0.115 R)
- M27: 6,203,375 km (0.066 R)
- M28: 6,578,118 km (0.104 R)
- M29: 6,800,270 km (0.109 R)
- M30: 6,992,504 km (0.102 R)
- M31: 7,121,756 km (0.054 R)
- M32: 7,947,237 km (0.112 R)
- M33: 8,048,365 km (0.025 R)
- M34: 8,491,474 km (0.067 R)
- M35: 8,768,081 km (0.066 R)
- M36: 8,942,512 km (0.091 R)
- M37: 9,047,679 km (0.114 R)
- M38: 9,117,990 km (0.088 R)
- M39: 9,365,724 km (0.061 R)
- M40: 10,012,735 km (0.117 R)
- M41: 10,085,589 km (0.119 R)
- M42: 10,637,157 km (0.079 R)
- M43: 11,311,993 km (0.115 R)
- M44: 11,463,834 km (0.098 R)
- M45: 11,692,869 km (0.093 R)
- M46: 11,846,356 km (0.102 R)
- M47: 12,506,382 km (0.088 R)
- M48: 13,538,757 km (0.109 R)
- M49: 13,902,429 km (0.082 R)
- M50: 14,598,209 km (0.11 R)
- M51: 14,929,568 km (0.092 R)
- M52: 17,449,096 km (0.105 R)
- M53: 18,511,091 km (0.117 R)
- M54: 19,457,297 km (0.037 R)
- M55: 19,776,240 km (0.062 R)
- M56: 20,005,125 km (0.101 R)
- M57: 20,188,831 km (0.084 R)
- M58: 20,604,264 km (0.083 R)
- M59: 21,209,388 km (0.096 R)
- M60: 21,303,036 km (0.045 R)
- M61: 21,820,345 km (0.087 R)
- M62: 22,009,437 km (0.087 R)
- M63: 22,675,746 km (0.116 R)
- M64: 23,396,957 km (0.105 R)
- M65: 23,493,747 km (0.106 R)
- M66: 23,881,954 km (0.078 R)
- M67: 26,004,897 km (0.11 R)
- M68: 26,759,618 km (0.102 R)
- M69: 27,114,315 km (0.118 R)
- M70: 27,419,495 km (0.114 R)
- M71: 27,674,858 km (0.027 R)
- M72: 28,445,287 km (0.093 R)
- M73: 28,600,121 km (0.084 R)
- M74: 28,962,746 km (0.093 R)
- M75: 29,014,657 km (0.107 R)
- M76: 29,640,275 km (0.069 R)
- M77: 29,902,221 km (0.093 R)
- M78: 30,322,890 km (0.068 R)
- M79: 31,757,234 km (0.113 R)
- M80: 32,186,431 km (0.065 R)
- M81: 32,294,141 km (0.096 R)
- M82: 33,540,291 km (0.092 R)
- M83: 33,703,951 km (0.108 R)
- M84: 33,813,158 km (0.12 R)
- M85: 35,133,658 km (0.047 R)
- M86: 35,300,011 km (0.118 R)
- M87: 35,355,512 km (0.083 R)
- M88: 36,359,014 km (0.026 R)
- M89: 36,583,262 km (0.101 R)
Planet 5 - Ice Giant
Semi-Major Axis: 9.21 AU
Status: Outer (Cold)
Composition: Methane/Ammonia Ices
Physical Data
Mass: 777.3
Radius: 7.9
Gravity: 12.45 G
Time & Orbit
Eccentricity (e): 0.103
Orbit Range: 8.26 AU - 10.16 AU
Year: 19293 Days
Day: 16.7 Hours
Environment
Temp: -236 °C
Axial Tilt: 22.6 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (95)
Outer Limit: 80,779,206 km
- M1: 175,628 km (0.116 R)
- M2: 300,841 km (0.105 R)
- M3: 626,815 km (0.058 R)
- M4: 2,364,095 km (0.099 R)
- M5: 2,619,160 km (0.088 R)
- M6: 2,768,907 km (0.051 R)
- M7: 3,274,847 km (0.12 R)
- M8: 3,436,413 km (0.087 R)
- M9: 3,809,360 km (0.085 R)
- M10: 4,282,837 km (0.106 R)
- M11: 5,860,646 km (0.099 R)
- M12: 6,057,218 km (0.098 R)
- M13: 6,106,585 km (0.078 R)
- M14: 6,355,965 km (0.097 R)
- M15: 6,659,499 km (0.112 R)
- M16: 7,758,894 km (0.037 R)
- M17: 9,083,134 km (0.102 R)
- M18: 9,597,601 km (0.119 R)
- M19: 10,062,850 km (0.073 R)
- M20: 11,257,838 km (0.096 R)
- M21: 11,686,586 km (0.086 R)
- M22: 11,996,253 km (0.113 R)
- M23: 12,120,719 km (0.069 R)
- M24: 13,844,385 km (0.116 R)
- M25: 13,974,984 km (0.086 R)
- M26: 14,303,651 km (0.115 R)
- M27: 14,435,746 km (0.103 R)
- M28: 14,701,282 km (0.115 R)
- M29: 14,901,444 km (0.085 R)
- M30: 15,102,503 km (0.083 R)
- M31: 15,237,142 km (0.104 R)
- M32: 15,304,610 km (0.063 R)
- M33: 15,779,434 km (0.044 R)
- M34: 16,121,564 km (0.085 R)
- M35: 17,939,777 km (0.099 R)
- M36: 18,082,194 km (0.03 R)
- M37: 18,440,331 km (0.099 R)
- M38: 19,163,338 km (0.067 R)
- M39: 19,455,053 km (0.108 R)
- M40: 21,086,119 km (0.069 R)
- M41: 21,994,178 km (0.101 R)
- M42: 22,915,103 km (0.061 R)
- M43: 22,992,295 km (0.084 R)
- M44: 23,302,412 km (0.114 R)
- M45: 23,380,202 km (0.109 R)
- M46: 24,005,073 km (0.079 R)
- M47: 24,083,612 km (0.06 R)
- M48: 24,162,300 km (0.108 R)
- M49: 24,714,765 km (0.093 R)
- M50: 25,832,411 km (0.082 R)
- M51: 28,116,770 km (0.048 R)
- M52: 28,199,498 km (0.079 R)
- M53: 28,365,252 km (0.108 R)
- M54: 29,450,734 km (0.044 R)
- M55: 30,295,065 km (0.092 R)
- M56: 30,634,951 km (0.11 R)
- M57: 31,404,483 km (0.114 R)
- M58: 32,440,298 km (0.039 R)
- M59: 32,962,395 km (0.074 R)
- M60: 33,224,490 km (0.09 R)
- M61: 33,399,520 km (0.097 R)
- M62: 34,989,296 km (0.075 R)
- M63: 35,435,397 km (0.106 R)
- M64: 35,973,052 km (0.091 R)
- M65: 36,062,960 km (0.062 R)
- M66: 37,056,440 km (0.08 R)
- M67: 37,602,173 km (0.069 R)
- M68: 38,978,024 km (0.056 R)
- M69: 39,255,229 km (0.071 R)
- M70: 39,997,534 km (0.041 R)
- M71: 40,931,922 km (0.034 R)
- M72: 41,496,056 km (0.106 R)
- M73: 42,917,535 km (0.116 R)
- M74: 43,108,272 km (0.097 R)
- M75: 45,127,843 km (0.063 R)
- M76: 45,613,288 km (0.118 R)
- M77: 45,905,303 km (0.064 R)
- M78: 48,264,163 km (0.087 R)
- M79: 49,158,907 km (0.102 R)
- M80: 50,561,537 km (0.076 R)
- M81: 52,282,361 km (0.101 R)
- M82: 52,894,366 km (0.067 R)
- M83: 53,201,192 km (0.1 R)
- M84: 55,677,186 km (0.112 R)
- M85: 56,824,602 km (0.08 R)
- M86: 58,613,044 km (0.055 R)
- M87: 58,718,810 km (0.044 R)
- M88: 59,036,556 km (0.11 R)
- M89: 61,062,111 km (0.091 R)
- M90: 65,290,495 km (0.066 R)
- M91: 67,384,566 km (0.107 R)
- M92: 71,073,500 km (0.115 R)
- M93: 75,057,141 km (0.191 R)
- M94: 76,670,704 km (0.107 R)
- M95: 76,902,132 km (0.109 R)
Planet 6 - Ice Giant
Semi-Major Axis: 10.31 AU
Status: Outer (Cold)
Composition: Methane/Ammonia Ices
Physical Data
Mass: 627.9
Radius: 5.7
Gravity: 19.33 G
Time & Orbit
Eccentricity (e): 0.086
Orbit Range: 9.42 AU - 11.2 AU
Year: 22851 Days
Day: 18.4 Hours
Environment
Temp: -241 °C
Axial Tilt: 39.5 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (94)
Outer Limit: 80,779,206 km
- M1: 91,255 km (0.114 R)
- M2: 316,549 km (0.047 R)
- M3: 599,289 km (0.11 R)
- M4: 740,958 km (0.051 R)
- M5: 1,027,887 km (0.053 R)
- M6: 1,111,961 km (0.062 R)
- M7: 1,377,647 km (0.104 R)
- M8: 2,071,033 km (0.057 R)
- M9: 2,471,506 km (0.105 R)
- M10: 3,384,053 km (0.038 R)
- M11: 3,510,164 km (0.097 R)
- M12: 3,637,771 km (0.113 R)
- M13: 3,897,623 km (0.095 R)
- M14: 7,235,600 km (0.068 R)
- M15: 7,893,382 km (0.119 R)
- M16: 9,148,059 km (0.109 R)
- M17: 9,265,195 km (0.098 R)
- M18: 9,679,132 km (0.096 R)
- M19: 10,038,616 km (0.108 R)
- M20: 10,341,551 km (0.088 R)
- M21: 11,331,141 km (0.113 R)
- M22: 11,393,972 km (0.095 R)
- M23: 12,675,128 km (0.112 R)
- M24: 14,203,869 km (0.108 R)
- M25: 14,339,554 km (0.096 R)
- M26: 16,425,697 km (0.096 R)
- M27: 17,286,483 km (0.043 R)
- M28: 17,576,553 km (0.059 R)
- M29: 17,868,269 km (0.049 R)
- M30: 17,941,572 km (0.04 R)
- M31: 18,976,639 km (0.113 R)
- M32: 19,426,181 km (0.107 R)
- M33: 21,181,563 km (0.049 R)
- M34: 22,432,500 km (0.048 R)
- M35: 22,511,338 km (0.103 R)
- M36: 22,748,899 km (0.068 R)
- M37: 22,828,186 km (0.068 R)
- M38: 24,841,474 km (0.114 R)
- M39: 25,415,182 km (0.113 R)
- M40: 26,826,937 km (0.115 R)
- M41: 26,910,712 km (0.039 R)
- M42: 27,078,711 km (0.061 R)
- M43: 28,178,704 km (0.066 R)
- M44: 28,263,825 km (0.088 R)
- M45: 28,520,086 km (0.082 R)
- M46: 29,899,229 km (0.03 R)
- M47: 29,986,145 km (0.107 R)
- M48: 31,476,589 km (0.098 R)
- M49: 32,097,420 km (0.055 R)
- M50: 32,543,222 km (0.066 R)
- M51: 33,350,901 km (0.118 R)
- M52: 34,894,451 km (0.102 R)
- M53: 35,628,827 km (0.074 R)
- M54: 36,739,891 km (0.065 R)
- M55: 37,956,421 km (0.101 R)
- M56: 38,522,349 km (0.118 R)
- M57: 38,806,436 km (0.069 R)
- M58: 39,949,363 km (0.045 R)
- M59: 40,332,783 km (0.076 R)
- M60: 41,393,581 km (0.055 R)
- M61: 42,756,867 km (0.115 R)
- M62: 44,134,813 km (0.087 R)
- M63: 44,729,763 km (0.115 R)
- M64: 45,627,351 km (0.12 R)
- M65: 46,128,503 km (0.102 R)
- M66: 49,173,568 km (0.029 R)
- M67: 49,790,360 km (0.086 R)
- M68: 49,996,506 km (0.049 R)
- M69: 50,616,739 km (0.108 R)
- M70: 53,017,635 km (0.119 R)
- M71: 54,284,879 km (0.1 R)
- M72: 57,712,764 km (0.087 R)
- M73: 58,146,149 km (0.079 R)
- M74: 58,363,365 km (0.093 R)
- M75: 62,984,294 km (0.05 R)
- M76: 66,583,170 km (0.078 R)
- M77: 67,607,317 km (0.078 R)
- M78: 67,721,310 km (0.12 R)
- M79: 68,292,924 km (0.03 R)
- M80: 71,174,478 km (0.114 R)
- M81: 71,755,516 km (0.045 R)
- M82: 72,688,558 km (0.115 R)
- M83: 72,922,380 km (0.11 R)
- M84: 73,156,500 km (0.195 R)
- M85: 73,508,205 km (0.111 R)
- M86: 73,625,490 km (0.055 R)
- M87: 74,448,727 km (0.031 R)
- M88: 74,566,460 km (0.079 R)
- M89: 76,460,369 km (0.078 R)
- M90: 77,652,066 km (0.113 R)
- M91: 77,771,595 km (0.059 R)
- M92: 78,250,308 km (0.032 R)
- M93: 80,053,860 km (0.105 R)
- M94: 80,295,460 km (0.057 R)
Kuiper Belt
Range: 30 - 50 AU
Composition
Type: Dwarf Planets/TNOs (Ices)
Reservoir of dwarf planets and volatile ices.
Outer System
Oort Cloud
Range: 392 - 11,447 AU
Composition
Type: Cometary Reservoir
System's final boundary, containing trillions of icy planetesimals.