Star System Generated (Seed: 1766638686)
Star Details
Spectral Class: M9V
Temperature: 2,400 K
Mass: 0.27 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: 10.4 AU
Planetary System (7 Planets)
Planet 1 - Gas Giant
Semi-Major Axis: 0.65 AU
Status: Outer (Cold)
Composition: Hydrogen/Helium Atmosphere
Physical Data
Mass: 482.1
Radius: 14.2
Gravity: 2.39 G
Time & Orbit
Eccentricity (e): 0.07
Orbit Range: 0.6 AU - 0.7 AU
Year: 368 Days
Day: 6.9 Hours
Environment
Temp: -157 °C
Axial Tilt: 47.1 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (35)
Outer Limit: 35,108,622 km
- M1: 179,817 km (0.041 R)
- M2: 297,251 km (0.119 R)
- M3: 397,033 km (0.111 R)
- M4: 506,389 km (0.091 R)
- M5: 613,800 km (0.066 R)
- M6: 714,180 km (0.063 R)
- M7: 828,323 km (0.109 R)
- M8: 964,607 km (0.085 R)
- M9: 1,101,340 km (0.095 R)
- M10: 1,257,819 km (0.085 R)
- M11: 1,356,404 km (0.106 R)
- M12: 1,462,319 km (0.077 R)
- M13: 1,561,951 km (0.077 R)
- M14: 1,730,249 km (0.059 R)
- M15: 1,865,635 km (0.115 R)
- M16: 1,969,606 km (0.11 R)
- M17: 2,225,268 km (0.114 R)
- M18: 2,330,735 km (0.077 R)
- M19: 2,464,924 km (0.079 R)
- M20: 2,596,271 km (0.051 R)
- M21: 2,707,572 km (0.075 R)
- M22: 2,843,407 km (0.072 R)
- M23: 2,935,110 km (0.073 R)
- M24: 3,069,000 km (0.099 R)
- M25: 3,163,247 km (0.109 R)
- M26: 3,318,679 km (0.103 R)
- M27: 3,415,619 km (0.107 R)
- M28: 3,562,823 km (0.118 R)
- M29: 3,693,422 km (0.093 R)
- M30: 3,800,384 km (0.07 R)
- M31: 3,895,529 km (0.096 R)
- M32: 4,036,749 km (0.109 R)
- M33: 4,186,048 km (0.091 R)
- M34: 4,297,797 km (0.091 R)
- M35: 4,463,701 km (0.11 R)
Planet 2 - Gas Giant
Semi-Major Axis: 0.72 AU
Status: Outer (Cold)
Composition: Hydrogen/Helium Atmosphere
Physical Data
Mass: 521.4
Radius: 11.2
Gravity: 4.16 G
Time & Orbit
Eccentricity (e): 0.152
Orbit Range: 0.61 AU - 0.83 AU
Year: 429 Days
Day: 14.3 Hours
Environment
Temp: -160 °C
Axial Tilt: 48.7 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (41)
Outer Limit: 35,108,622 km
- M1: 153,039 km (0.098 R)
- M2: 327,470 km (0.078 R)
- M3: 404,363 km (0.096 R)
- M4: 512,223 km (0.112 R)
- M5: 686,056 km (0.104 R)
- M6: 812,466 km (0.057 R)
- M7: 998,267 km (0.109 R)
- M8: 1,085,632 km (0.108 R)
- M9: 1,171,052 km (0.025 R)
- M10: 1,245,103 km (0.078 R)
- M11: 1,325,437 km (0.084 R)
- M12: 1,407,566 km (0.098 R)
- M13: 1,486,704 km (0.077 R)
- M14: 1,577,510 km (0.103 R)
- M15: 1,685,968 km (0.11 R)
- M16: 1,759,570 km (0.105 R)
- M17: 1,866,981 km (0.115 R)
- M18: 1,943,426 km (0.108 R)
- M19: 2,026,453 km (0.105 R)
- M20: 2,277,478 km (0.091 R)
- M21: 2,377,110 km (0.105 R)
- M22: 2,454,452 km (0.032 R)
- M23: 2,532,542 km (0.107 R)
- M24: 2,605,397 km (0.113 R)
- M25: 2,747,215 km (0.108 R)
- M26: 2,841,013 km (0.094 R)
- M27: 2,961,439 km (0.076 R)
- M28: 3,122,556 km (0.112 R)
- M29: 3,273,351 km (0.081 R)
- M30: 3,379,865 km (0.044 R)
- M31: 3,602,915 km (0.112 R)
- M32: 3,872,939 km (0.045 R)
- M33: 4,163,907 km (0.053 R)
- M34: 4,344,921 km (0.106 R)
- M35: 4,484,346 km (0.045 R)
- M36: 4,684,807 km (0.077 R)
- M37: 4,767,385 km (0.03 R)
- M38: 4,873,300 km (0.116 R)
- M39: 4,995,223 km (0.109 R)
- M40: 5,141,230 km (0.098 R)
- M41: 5,351,265 km (0.1 R)
Planet 3 - Gas Giant
Semi-Major Axis: 1.74 AU
Status: Outer (Cold)
Composition: Hydrogen/Helium Atmosphere
Physical Data
Mass: 247.1
Radius: 13.8
Gravity: 1.3 G
Time & Orbit
Eccentricity (e): 0.129
Orbit Range: 1.52 AU - 1.96 AU
Year: 1613 Days
Day: 6.7 Hours
Environment
Temp: -199 °C
Axial Tilt: 33.9 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (36)
Outer Limit: 35,108,622 km
- M1: 189,840 km (0.047 R)
- M2: 396,584 km (0.112 R)
- M3: 554,260 km (0.06 R)
- M4: 697,874 km (0.045 R)
- M5: 899,382 km (0.102 R)
- M6: 1,121,386 km (0.065 R)
- M7: 1,211,444 km (0.097 R)
- M8: 1,421,629 km (0.105 R)
- M9: 1,996,384 km (0.072 R)
- M10: 2,107,684 km (0.109 R)
- M11: 2,194,750 km (0.058 R)
- M12: 2,481,829 km (0.032 R)
- M13: 2,639,355 km (0.068 R)
- M14: 2,916,111 km (0.113 R)
- M15: 3,539,635 km (0.112 R)
- M16: 3,665,148 km (0.109 R)
- M17: 4,528,477 km (0.111 R)
- M18: 4,722,506 km (0.115 R)
- M19: 4,895,890 km (0.055 R)
- M20: 5,024,544 km (0.08 R)
- M21: 5,368,918 km (0.109 R)
- M22: 5,733,488 km (0.078 R)
- M23: 5,993,489 km (0.044 R)
- M24: 6,282,811 km (0.119 R)
- M25: 6,744,770 km (0.08 R)
- M26: 7,059,075 km (0.093 R)
- M27: 8,016,800 km (0.05 R)
- M28: 8,307,918 km (0.093 R)
- M29: 8,489,978 km (0.119 R)
- M30: 8,758,357 km (0.092 R)
- M31: 9,072,662 km (0.115 R)
- M32: 9,318,003 km (0.086 R)
- M33: 9,419,729 km (0.106 R)
- M34: 9,595,058 km (0.078 R)
- M35: 9,963,517 km (0.094 R)
- M36: 10,082,448 km (0.105 R)
Planet 4 - Gas Giant
Semi-Major Axis: 2.39 AU
Status: Outer (Cold)
Composition: Hydrogen/Helium Atmosphere
Physical Data
Mass: 500.5
Radius: 12.5
Gravity: 3.2 G
Time & Orbit
Eccentricity (e): 0.099
Orbit Range: 2.15 AU - 2.63 AU
Year: 2597 Days
Day: 6.9 Hours
Environment
Temp: -212 °C
Axial Tilt: 26.7 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (68)
Outer Limit: 35,108,622 km
- M1: 167,849 km (0.1 R)
- M2: 279,449 km (0.101 R)
- M3: 398,828 km (0.094 R)
- M4: 571,913 km (0.107 R)
- M5: 706,252 km (0.061 R)
- M6: 879,486 km (0.051 R)
- M7: 971,937 km (0.106 R)
- M8: 1,249,441 km (0.104 R)
- M9: 1,441,525 km (0.07 R)
- M10: 1,666,969 km (0.076 R)
- M11: 2,165,130 km (0.103 R)
- M12: 2,345,844 km (0.08 R)
- M13: 2,653,717 km (0.107 R)
- M14: 3,089,495 km (0.025 R)
- M15: 3,293,846 km (0.096 R)
- M16: 3,639,267 km (0.104 R)
- M17: 4,139,523 km (0.075 R)
- M18: 4,365,266 km (0.108 R)
- M19: 4,745,095 km (0.096 R)
- M20: 5,032,772 km (0.103 R)
- M21: 5,678,735 km (0.098 R)
- M22: 5,948,161 km (0.099 R)
- M23: 6,038,817 km (0.098 R)
- M24: 6,203,375 km (0.094 R)
- M25: 6,611,927 km (0.048 R)
- M26: 7,105,899 km (0.065 R)
- M27: 7,710,723 km (0.096 R)
- M28: 8,069,459 km (0.06 R)
- M29: 8,170,138 km (0.117 R)
- M30: 8,271,117 km (0.104 R)
- M31: 8,556,400 km (0.118 R)
- M32: 8,659,024 km (0.066 R)
- M33: 8,762,097 km (0.105 R)
- M34: 9,094,803 km (0.087 R)
- M35: 9,304,688 km (0.115 R)
- M36: 9,558,855 km (0.103 R)
- M37: 9,644,126 km (0.048 R)
- M38: 9,729,546 km (0.117 R)
- M39: 10,052,379 km (0.055 R)
- M40: 10,247,753 km (0.096 R)
- M41: 10,335,118 km (0.097 R)
- M42: 10,554,279 km (0.097 R)
- M43: 10,775,086 km (0.069 R)
- M44: 10,997,388 km (0.064 R)
- M45: 11,221,187 km (0.108 R)
- M46: 11,446,631 km (0.089 R)
- M47: 12,224,091 km (0.093 R)
- M48: 12,455,968 km (0.065 R)
- M49: 12,853,748 km (0.069 R)
- M50: 13,018,605 km (0.103 R)
- M51: 13,469,942 km (0.037 R)
- M52: 13,565,685 km (0.076 R)
- M53: 13,757,619 km (0.065 R)
- M54: 13,878,194 km (0.096 R)
- M55: 14,023,155 km (0.114 R)
- M56: 14,388,024 km (0.074 R)
- M57: 14,706,817 km (0.1 R)
- M58: 15,501,182 km (0.074 R)
- M59: 15,727,224 km (0.1 R)
- M60: 15,929,032 km (0.06 R)
- M61: 16,157,019 km (0.118 R)
- M62: 16,258,745 km (0.095 R)
- M63: 16,360,622 km (0.108 R)
- M64: 16,616,434 km (0.054 R)
- M65: 16,770,520 km (0.105 R)
- M66: 16,950,935 km (0.116 R)
- M67: 17,261,500 km (0.107 R)
- M68: 17,339,590 km (0.072 R)
Planet 5 - Gas Giant
Semi-Major Axis: 3.24 AU
Status: Outer (Cold)
Composition: Hydrogen/Helium Atmosphere
Physical Data
Mass: 109.4
Radius: 10
Gravity: 1.09 G
Time & Orbit
Eccentricity (e): 0.005
Orbit Range: 3.22 AU - 3.26 AU
Year: 4099 Days
Day: 5.1 Hours
Environment
Temp: -219 °C
Axial Tilt: 16.1 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (63)
Outer Limit: 35,108,622 km
- M1: 158,723 km (0.082 R)
- M2: 233,971 km (0.06 R)
- M3: 514,916 km (0.116 R)
- M4: 587,770 km (0.045 R)
- M5: 657,632 km (0.111 R)
- M6: 798,853 km (0.054 R)
- M7: 926,160 km (0.07 R)
- M8: 1,086,529 km (0.102 R)
- M9: 1,174,792 km (0.082 R)
- M10: 1,349,373 km (0.026 R)
- M11: 1,483,712 km (0.052 R)
- M12: 1,592,469 km (0.079 R)
- M13: 1,786,647 km (0.098 R)
- M14: 1,934,899 km (0.119 R)
- M15: 2,065,199 km (0.111 R)
- M16: 2,220,930 km (0.054 R)
- M17: 2,346,143 km (0.092 R)
- M18: 2,579,965 km (0.119 R)
- M19: 2,699,793 km (0.087 R)
- M20: 2,809,149 km (0.088 R)
- M21: 2,932,417 km (0.071 R)
- M22: 3,045,065 km (0.083 R)
- M23: 3,197,355 km (0.101 R)
- M24: 3,443,893 km (0.105 R)
- M25: 4,038,395 km (0.09 R)
- M26: 4,107,958 km (0.088 R)
- M27: 4,262,492 km (0.12 R)
- M28: 4,548,523 km (0.109 R)
- M29: 4,650,100 km (0.028 R)
- M30: 4,900,078 km (0.111 R)
- M31: 5,019,158 km (0.07 R)
- M32: 5,139,285 km (0.112 R)
- M33: 5,629,368 km (0.055 R)
- M34: 5,816,964 km (0.116 R)
- M35: 5,879,944 km (0.087 R)
- M36: 6,070,382 km (0.056 R)
- M37: 6,604,596 km (0.096 R)
- M38: 6,719,936 km (0.112 R)
- M39: 7,103,505 km (0.072 R)
- M40: 7,170,824 km (0.101 R)
- M41: 7,391,481 km (0.084 R)
- M42: 8,154,879 km (0.11 R)
- M43: 8,528,126 km (0.045 R)
- M44: 8,798,150 km (0.103 R)
- M45: 9,034,365 km (0.059 R)
- M46: 9,793,425 km (0.053 R)
- M47: 10,152,011 km (0.101 R)
- M48: 10,342,598 km (0.103 R)
- M49: 10,476,638 km (0.084 R)
- M50: 11,057,826 km (0.095 R)
- M51: 11,352,234 km (0.069 R)
- M52: 11,530,256 km (0.064 R)
- M53: 11,689,278 km (0.093 R)
- M54: 11,788,911 km (0.112 R)
- M55: 12,049,510 km (0.049 R)
- M56: 12,210,926 km (0.062 R)
- M57: 12,332,400 km (0.104 R)
- M58: 12,596,889 km (0.055 R)
- M59: 13,422,819 km (0.053 R)
- M60: 13,673,993 km (0.049 R)
- M61: 13,821,198 km (0.094 R)
- M62: 13,969,000 km (0.106 R)
- M63: 14,117,252 km (0.03 R)
Planet 6 - Gas Giant
Semi-Major Axis: 4.51 AU
Status: Outer (Cold)
Composition: Hydrogen/Helium Atmosphere
Physical Data
Mass: 824.8
Radius: 9.8
Gravity: 8.59 G
Time & Orbit
Eccentricity (e): 0.149
Orbit Range: 3.84 AU - 5.18 AU
Year: 6732 Days
Day: 10.2 Hours
Environment
Temp: -223 °C
Axial Tilt: 38.5 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (84)
Outer Limit: 35,108,622 km
- M1: 125,363 km (0.071 R)
- M2: 232,325 km (0.113 R)
- M3: 784,042 km (0.054 R)
- M4: 907,909 km (0.116 R)
- M5: 1,193,791 km (0.095 R)
- M6: 1,565,991 km (0.066 R)
- M7: 1,785,899 km (0.062 R)
- M8: 2,621,104 km (0.067 R)
- M9: 2,883,200 km (0.08 R)
- M10: 3,203,938 km (0.109 R)
- M11: 3,407,092 km (0.054 R)
- M12: 4,401,169 km (0.094 R)
- M13: 4,513,667 km (0.119 R)
- M14: 4,627,361 km (0.092 R)
- M15: 4,770,676 km (0.095 R)
- M16: 4,886,315 km (0.108 R)
- M17: 5,120,735 km (0.104 R)
- M18: 5,209,447 km (0.095 R)
- M19: 5,600,346 km (0.083 R)
- M20: 5,784,052 km (0.098 R)
- M21: 6,000,819 km (0.087 R)
- M22: 6,094,468 km (0.108 R)
- M23: 6,538,325 km (0.104 R)
- M24: 6,699,441 km (0.107 R)
- M25: 8,381,370 km (0.088 R)
- M26: 8,662,166 km (0.092 R)
- M27: 9,233,031 km (0.1 R)
- M28: 9,595,955 km (0.103 R)
- M29: 9,742,561 km (0.082 R)
- M30: 9,852,815 km (0.114 R)
- M31: 10,373,416 km (0.075 R)
- M32: 10,486,212 km (0.077 R)
- M33: 10,712,853 km (0.089 R)
- M34: 12,027,818 km (0.095 R)
- M35: 13,270,528 km (0.111 R)
- M36: 13,352,208 km (0.109 R)
- M37: 13,433,889 km (0.093 R)
- M38: 13,928,011 km (0.09 R)
- M39: 14,218,829 km (0.055 R)
- M40: 15,531,401 km (0.072 R)
- M41: 15,703,588 km (0.108 R)
- M42: 15,789,906 km (0.108 R)
- M43: 16,442,302 km (0.118 R)
- M44: 16,749,875 km (0.114 R)
- M45: 17,236,966 km (0.098 R)
- M46: 18,406,672 km (0.098 R)
- M47: 21,059,640 km (0.119 R)
- M48: 21,345,821 km (0.076 R)
- M49: 21,441,564 km (0.12 R)
- M50: 21,681,369 km (0.075 R)
- M51: 21,777,560 km (0.079 R)
- M52: 22,795,873 km (0.076 R)
- M53: 23,335,622 km (0.106 R)
- M54: 23,879,411 km (0.105 R)
- M55: 24,227,674 km (0.032 R)
- M56: 24,778,344 km (0.069 R)
- M57: 25,080,532 km (0.112 R)
- M58: 25,282,639 km (0.108 R)
- M59: 25,688,348 km (0.087 R)
- M60: 25,892,100 km (0.102 R)
- M61: 26,867,179 km (0.047 R)
- M62: 26,970,402 km (0.095 R)
- M63: 27,125,684 km (0.102 R)
- M64: 27,436,997 km (0.069 R)
- M65: 27,906,436 km (0.105 R)
- M66: 28,483,584 km (0.089 R)
- M67: 29,543,036 km (0.119 R)
- M68: 29,809,919 km (0.091 R)
- M69: 29,970,437 km (0.072 R)
- M70: 30,561,499 km (0.034 R)
- M71: 31,319,361 km (0.117 R)
- M72: 32,083,358 km (0.112 R)
- M73: 32,302,818 km (0.103 R)
- M74: 32,522,727 km (0.093 R)
- M75: 32,632,831 km (0.063 R)
- M76: 33,518,450 km (0.101 R)
- M77: 33,741,052 km (0.066 R)
- M78: 33,964,252 km (0.109 R)
- M79: 34,468,097 km (0.052 R)
- M80: 35,880,600 km (0.075 R)
- M81: 36,165,435 km (0.081 R)
- M82: 37,196,763 km (0.089 R)
- M83: 37,716,166 km (0.112 R)
- M84: 37,889,849 km (0.094 R)
Planet 7 - Gas Giant
Semi-Major Axis: 5.29 AU
Status: Outer (Cold)
Composition: Hydrogen/Helium Atmosphere
Physical Data
Mass: 368
Radius: 13
Gravity: 2.18 G
Time & Orbit
Eccentricity (e): 0.21
Orbit Range: 4.18 AU - 6.4 AU
Year: 8552 Days
Day: 13.4 Hours
Environment
Temp: -228 °C
Axial Tilt: 26.1 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (87)
Outer Limit: 35,108,622 km
- M1: 186,698 km (0.051 R)
- M2: 352,453 km (0.12 R)
- M3: 473,328 km (0.118 R)
- M4: 637,287 km (0.11 R)
- M5: 1,120,937 km (0.067 R)
- M6: 1,762,113 km (0.054 R)
- M7: 1,992,344 km (0.098 R)
- M8: 2,335,672 km (0.106 R)
- M9: 2,525,212 km (0.116 R)
- M10: 2,741,979 km (0.1 R)
- M11: 3,033,097 km (0.097 R)
- M12: 3,358,023 km (0.028 R)
- M13: 3,792,456 km (0.093 R)
- M14: 4,688,248 km (0.086 R)
- M15: 4,794,761 km (0.12 R)
- M16: 4,929,100 km (0.108 R)
- M17: 5,591,071 km (0.087 R)
- M18: 6,164,330 km (0.06 R)
- M19: 6,310,637 km (0.067 R)
- M20: 6,636,610 km (0.113 R)
- M21: 6,877,164 km (0.106 R)
- M22: 8,026,973 km (0.1 R)
- M23: 8,219,057 km (0.048 R)
- M24: 8,542,637 km (0.089 R)
- M25: 9,102,282 km (0.075 R)
- M26: 9,269,234 km (0.118 R)
- M27: 9,504,551 km (0.085 R)
- M28: 9,878,546 km (0.055 R)
- M29: 9,981,320 km (0.116 R)
- M30: 10,084,542 km (0.055 R)
- M31: 10,257,328 km (0.085 R)
- M32: 10,922,739 km (0.12 R)
- M33: 11,530,106 km (0.059 R)
- M34: 12,628,603 km (0.052 R)
- M35: 13,607,722 km (0.087 R)
- M36: 14,338,507 km (0.066 R)
- M37: 14,689,165 km (0.062 R)
- M38: 15,638,213 km (0.034 R)
- M39: 15,798,283 km (0.07 R)
- M40: 16,484,788 km (0.104 R)
- M41: 16,607,009 km (0.087 R)
- M42: 16,893,190 km (0.08 R)
- M43: 17,057,598 km (0.054 R)
- M44: 17,139,877 km (0.114 R)
- M45: 17,346,322 km (0.084 R)
- M46: 18,475,487 km (0.102 R)
- M47: 18,729,653 km (0.095 R)
- M48: 19,113,073 km (0.068 R)
- M49: 19,585,204 km (0.108 R)
- M50: 20,061,224 km (0.077 R)
- M51: 20,148,290 km (0.069 R)
- M52: 21,734,925 km (0.108 R)
- M53: 22,137,942 km (0.108 R)
- M54: 22,407,966 km (0.109 R)
- M55: 22,498,173 km (0.035 R)
- M56: 23,178,844 km (0.103 R)
- M57: 23,315,875 km (0.054 R)
- M58: 23,407,280 km (0.043 R)
- M59: 23,728,317 km (0.113 R)
- M60: 23,866,395 km (0.065 R)
- M61: 24,840,128 km (0.084 R)
- M62: 25,167,747 km (0.094 R)
- M63: 26,206,256 km (0.113 R)
- M64: 26,730,746 km (0.084 R)
- M65: 26,970,402 km (0.077 R)
- M66: 27,887,287 km (0.09 R)
- M67: 28,373,929 km (0.109 R)
- M68: 28,520,535 km (0.075 R)
- M69: 28,863,413 km (0.068 R)
- M70: 29,109,202 km (0.073 R)
- M71: 29,553,508 km (0.086 R)
- M72: 29,850,909 km (0.087 R)
- M73: 30,149,207 km (0.112 R)
- M74: 30,248,839 km (0.12 R)
- M75: 30,348,621 km (0.107 R)
- M76: 30,448,552 km (0.112 R)
- M77: 31,201,329 km (0.043 R)
- M78: 31,605,393 km (0.096 R)
- M79: 31,757,234 km (0.037 R)
- M80: 31,960,239 km (0.113 R)
- M81: 32,418,457 km (0.106 R)
- M82: 33,444,698 km (0.071 R)
- M83: 33,754,516 km (0.083 R)
- M84: 33,909,948 km (0.106 R)
- M85: 34,221,261 km (0.109 R)
- M86: 34,325,231 km (0.103 R)
- M87: 34,481,412 km (0.118 R)
Kuiper Belt
Range: 30 - 46 AU
Composition
Type: Dwarf Planets/TNOs (Ices)
Reservoir of dwarf planets and volatile ices.
Outer System
Oort Cloud
Range: 298 - 11,783 AU
Composition
Type: Cometary Reservoir
System's final boundary, containing trillions of icy planetesimals.