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Passage au Périhélie des Comètes |
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Passage au Périhélie des Comètes |
Un des phénomènes les plus impressionnants de l'Univers nous dévoile peu à peu tous ses secrets.
Crainte de mauvais présages dans l'Antiquité, supposées maintenant avoir joué un rôle majeur dans le développement de la vie sur Terre, les comètes sont une éternelle source d'études et de fascination pour les astronomes amateurs comme pour les professionnels.
Fourmillant de conseils pratiques et d'anecdotes, le livre de Michel Ory nous immerge dans la vie quotidienne de ces chasseurs de comètes. Comment en découvrir une ? Comment se la faire attribuer ? Peut-on déterminer son orbite, calculer sa trajectoire, anticiper son retour ?
On découvre une communauté internationale de passionnés qui, depuis longtemps, contribue sans relâche à l'étude de ces phénomènes célestes. De nombreuses photos et des illustrations réalisées par le dessinateur de presse Pitch Comment viennent enrichir l'ensemble.
Professeur de physique au lycée cantonal de Porrentruy, ancien journaliste et astronome amateur passionné, Michel Ory écume les observatoires aux quatre coins du globe, à la recherche de ces phénomènes célestes. En 2008, par la découverte de 304P/Ory, il intègre la « communauté » des chasseurs/découvreurs de comètes.
Sommaire : 1. Découvrir sa première comète – 2. Origine et nature des comètes – 3. Les étoiles filantes, des poussières de comètes – 4. Cometography, la référence mondiale – 5. Mes amateur(e)s stars – 6. Souvent perdues, parfois retrouvées – 7. Ils ont décroché le jackpot – 8. L'affaire Bappu et la légende Ikeya – 9. Une comète pour la science – 10. Comment observer les comètes depuis son jardin ? – 11. Voir la prochaine grande comète – Annexe. Où évoluent les comètes dans le système solaire ? – Bibliographie – Glossaire – Index
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Date de Passage au Périhélie des Comètes d'après les données provenant de l'IAU - Minor Planet Center - Central Bureau for Astronomical Telegrams
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Date de passage au plus près du Soleil Nom Magnitude prévue Distance au Soleil (en millions de km) Période (en années) 1/ 2/1986 1P Halley 1.7 90.470 75.56 6/ 8/1989 23P Brorsen-Metcalf 6.0 72.897 69.79 2/12/1992 109P Swift-Tuttle 4.6 145.081 133.63 11/ 9/1995 122P de Vico 5.7 99.554 74.01 20/ 1/1996 95P Chiron 15.7 1275.833 50.70 29/ 3/1997 C/1995 O1 Hale-Bopp -1.9 134.874 2386.47 14/ 5/2000 165P LINEAR 20.0 1030.326 75.63 11/ 5/2001 167P CINEOS 20.1 1764.806 65.27 6/ 3/2002 153P Ikeya-Zhang 5.5 78.699 360.80 14/ 5/2002 166P NEAT 19.7 1275.217 51.38 27/ 1/2006 C/2002 VQ94 LINEAR 17.8 1021.942 2522.49 2/ 9/2006 177P Barnard 14.0 163.313 120.65 8/ 6/2007 C/2007 D1 LINEAR 17.7 1320.019 54625.77 15/ 4/2009 C/2009 G1 STEREO 10.6 170.016 --- 1/ 4/2010 P/2010 E2 Jarnac 18.6 361.914 25.39 29/ 8/2010 P/2010 J3 McMillan 16.7 366.489 26.88 19/ 4/2011 P/2010 JC81 WISE 13.8 270.598 23.10 23/ 7/2011 27P Crommelin 10.7 112.455 27.84 6/10/2011 P/2012 C3 PANSTARRS 21.6 539.439 30.44 30/12/2011 P/2011 C2 Gibbs 20.0 810.865 20.19 23/ 1/2012 P/2011 JB15 Spacewatch-Boattini 19.8 750.927 19.95 1/ 6/2012 P/2012 G1 PANSTARRS 20.6 386.585 8.52 13/ 6/2012 P/2012 NJ La Sagra 15.8 193.369 24.61 8/11/2012 P/2012 U2 PANSTARRS 20.1 535.874 19.08 1/12/2012 262P McNaught-Russell 14.0 189.695 18.03 18/12/2012 273P Pons-Gambart 11.8 123.270 179.43 2/ 3/2013 P/2013 P1 PANSTARRS 20.4 505.279 25.09 6/ 6/2013 270P Gehrels 16.8 531.148 17.21 3/ 7/2013 P/2013 N5 PANSTARRS 21.1 272.508 17.73 11/ 7/2013 271P van Houten-Lemmon 20.7 638.503 18.70 18/ 7/2013 P/2012 B1 PANSTARRS 17.9 576.821 16.68 28/ 8/2013 P/2013 J2 McNaught 16.6 318.737 15.52 13/12/2013 P/2013 G1 Kowalski 19.4 502.085 18.08 30/ 1/2014 292P Li 18.5 376.214 15.09 8/ 2/2014 290P Jager 14.8 342.775 15.45 15/ 2/2014 P/2013 N3 PANSTARRS 20.8 449.770 20.09 31/ 3/2014 P/2015 D5 Kowalski 18.9 685.790 26.86 20/ 4/2014 P/2014 O3 PANSTARRS 20.5 694.894 20.81 19/ 5/2014 134P Kowal-Vavrova 16.7 387.593 15.66 1/ 7/2014 P/2014 L3 Hill 18.5 276.493 23.35 19/ 7/2014 P/2014 L2 NEOWISE 16.4 331.745 15.83 11/ 8/2014 P/2011 S1 Gibbs 20.6 1026.919 25.16 28/ 8/2014 301P LINEAR-NEAT 19.3 356.021 13.75 29/ 9/2014 269P Jedicke 19.3 603.032 18.83 21/12/2014 307P LINEAR 19.0 281.946 13.94 21/12/2014 P/2015 T3 PANSTARRS 19.7 318.299 9.00 25/12/2014 P/2014 M4 PANSTARRS 20.0 356.525 14.24 31/12/2014 P/2014 X1 Elenin 17.3 270.666 15.47 23/ 1/2015 P/2014 V1 PANSTARRS 20.7 381.835 12.83 3/ 2/2015 P/2015 B4 Lemmon-PANSTARRS 19.0 561.292 24.91 17/ 2/2015 P/2015 A3 PANSTARRS 22.0 173.862 21.82 4/ 3/2015 92P Sanguin 18.1 271.143 12.36 24/ 4/2015 174P Echeclus 17.3 869.925 35.08 26/ 4/2015 P/2015 C1 TOTAS-Gibbs 19.0 433.073 16.89 6/ 5/2015 308P Lagerkvist-Carsenty 19.7 628.999 16.97 5/ 6/2015 P/2015 K5 PANSTARRS 20.1 449.217 17.43 28/ 6/2015 P/2015 R1 PANSTARRS 19.0 321.778 14.26 2/ 7/2015 P/2015 D6 Lemmon-PANSTARRS 20.6 682.099 19.09 5/ 8/2015 140P Bowell-Skiff 18.3 296.802 16.31 16/ 8/2015 P/2015 PD229 Cameron-ISON 17.8 721.958 19.25 5/ 9/2015 P/2015 Q2 Pimentel 18.3 274.035 19.92 10/ 9/2015 P/2015 M2 PANSTARRS 19.8 885.946 19.44 14/ 9/2015 P/2015 B1 PANSTARRS 20.5 898.038 29.27 30/ 9/2015 P/2015 W2 Catalina 18.9 399.341 19.70 10/10/2015 151P Helin 16.8 367.809 13.84 18/10/2015 P/2001 H5 NEAT 18.6 366.278 15.06 24/10/2015 318P McNaught-Hartley 15.6 364.324 20.53 29/11/2015 329P LINEAR-Catalina 15.0 250.780 11.83 29/12/2015 P/2014 W4 PANSTARRS 19.9 639.419 16.95 20/ 1/2016 P/2015 P4 PANSTARRS 20.2 375.688 14.88 23/ 2/2016 P/2016 A7 PANSTARRS 20.8 327.544 11.29 17/ 3/2016 332P-B Ikeya-Murakami 20.3 235.301 5.41 17/ 3/2016 332P-D Ikeya-Murakami 20.3 235.177 5.41 17/ 3/2016 332P-E Ikeya-Murakami 22.3 235.337 5.41 17/ 3/2016 332P-F Ikeya-Murakami 22.3 236.992 5.63 17/ 3/2016 332P-I Ikeya-Murakami 20.8 235.328 5.41 17/ 3/2016 332P-J Ikeya-Murakami 20.8 235.672 5.50 19/ 3/2016 332P-G Ikeya-Murakami 20.1 231.826 5.33 19/ 4/2016 C/2013 X1 PANSTARRS 12.6 198.251 --- 27/ 4/2016 P/2017 G1 PANSTARRS 19.9 378.260 19.66 30/ 4/2016 53P Van Biesbroeck 14.0 363.764 12.64 2/ 5/2016 C/2015 D3 PANSTARRS 19.1 1218.047 --- 5/ 5/2016 C/2015 B2 PANSTARRS 17.7 504.449 --- 11/ 5/2016 C/2017 E2 Tsuchinshan 17.3 351.409 99.86 13/ 5/2016 C/2015 W1 Gibbs 18.7 335.641 --- 13/ 5/2016 C/2015 Y1 LINEAR 18.1 376.382 3674.95 28/ 5/2016 C/2011 KP36 Spacewatch 15.0 730.156 243.42 10/ 6/2016 C/2017 E5 Lemmon 16.1 267.440 --- 16/ 6/2016 C/2015 T4 PANSTARRS 16.6 344.113 710.61 23/ 6/2016 P/2017 D1 Fuls 21.2 407.317 10.61 13/ 7/2016 C/2016 K1 LINEAR 17.7 343.532 --- 19/ 7/2016 56P Slaughter-Burnham 16.7 373.612 11.42 22/ 7/2016 P/2016 R4 Gibbs 18.6 417.673 12.31 29/ 7/2016 C/2015 X7 ATLAS 18.0 550.415 --- 8/ 8/2016 C/2014 R3 PANSTARRS 19.6 1088.035 --- 25/ 8/2016 C/2015 TQ209 LINEAR 13.9 211.814 --- 26/ 8/2016 330P Catalina 19.7 447.926 17.07 28/ 8/2016 C/2015 V4 PANSTARRS 19.8 816.658 79.35 29/ 8/2016 C/2016 A8 LINEAR 14.9 282.939 201.35 4/ 9/2016 P/2017 D4 PANSTARRS 20.3 420.404 20.79 14/ 9/2016 C/2015 H2 PANSTARRS 17.9 745.036 --- 8/10/2016 314P Montani 19.1 635.107 19.60 9/10/2016 C/2016 R3 Borisov 15.2 68.000 --- 18/10/2016 C/2016 P4 PANSTARRS 21.9 882.465 8538.07 27/10/2016 P/2015 TP200 LINEAR 18.6 505.909 19.62 31/10/2016 344P Read 18.9 420.800 10.73 28/11/2016 315P LONEOS 16.5 353.532 10.98 4/12/2016 C/2016 B1 NEOWISE 17.7 481.300 9131.97 12/12/2016 C/2014 OE4 PANSTARRS 19.1 934.912 --- 29/12/2016 C/2016 T2 Matheny 18.8 284.715 989.14 5/ 1/2017 P/2017 B4 PANSTARRS 20.5 419.008 9.26 9/ 1/2017 128P Shoemaker-Holt 15.3 456.519 9.52 9/ 1/2017 C/2017 D5 PANSTARRS 20.8 322.819 1219.11 13/ 1/2017 C/2016 U1 NEOWISE 12.4 48.554 --- 18/ 1/2017 C/2017 C1 NEOWISE 20.4 224.113 93.31 21/ 1/2017 C/2017 C2 PANSTARRS 19.2 362.313 938.50 28/ 1/2017 343P NEAT-LONEOS 19.6 339.665 12.76 30/ 1/2017 C/2017 A3 Elenin 18.0 575.139 286.15 1/ 2/2017 C/2016 T1 Matheny 20.5 344.930 1403.09 2/ 2/2017 336P McNaught 20.6 417.709 11.29 13/ 2/2017 346P Catalina 19.0 333.198 9.47 17/ 2/2017 188P LINEAR-Mueller 18.1 382.317 9.15 23/ 2/2017 P/2016 WM48 Lemmon 19.3 264.103 23.33 28/ 2/2017 93P Lovas 13.0 254.076 9.18 5/ 3/2017 C/2016 VZ18 PANSTARRS 17.9 136.782 2055.88 13/ 3/2017 172P Yeung 20.7 500.662 8.65 15/ 3/2017 P/2016 S1 PANSTARRS 17.9 359.181 23.82 10/ 4/2017 C/2017 E1 Borisov 14.3 135.124 --- 10/ 4/2017 P/2017 R1 PANSTARRS 21.7 497.546 8.41 15/ 4/2017 C/2017 G3 PANSTARRS 19.3 387.089 5591.02 23/ 4/2017 C/2017 E4 Lovejoy 14.1 73.486 --- 27/ 4/2017 C/2017 D3 ATLAS 18.0 743.730 --- 28/ 4/2017 P/2016 A3 PANSTARRS 20.0 723.660 22.16 28/ 4/2017 C/2017 M3 PANSTARRS 20.5 696.522 2154.06 10/ 5/2017 C/2015 ER61 PANSTARRS 11.6 156.173 --- 10/ 5/2017 C/2015 E61-B PANSTARRS 14.1 156.430 --- 16/ 5/2017 C/2017 A1 PANSTARRS 18.9 342.512 660.60 18/ 5/2017 C/2015 T2 PANSTARRS 20.9 1037.603 --- 24/ 5/2017 C/2017 S7 Lemmon 20.5 1137.954 --- 31/ 5/2017 P/2017 K3 Gasparovic 18.8 350.539 13.19 4/ 6/2017 C/2016 E1 PANSTARRS 20.1 1223.468 --- 7/ 6/2017 334P NEAT 20.1 663.127 17.88 7/ 6/2017 C/2017 E3 PANSTARRS 17.9 888.368 --- 10/ 6/2017 P/1999 XN120 Catalina 19.3 493.727 8.54 11/ 6/2017 47P Ashbrook-Jackson 19.1 420.611 8.38 11/ 6/2017 C/2015 V2 Johnson 6.7 246.117 --- 11/ 6/2017 P/2017 G2 PANSTARRS 19.7 424.672 22.90 19/ 6/2017 90P Gehrels 18.5 443.649 14.89 22/ 6/2017 352P Skiff 17.4 379.089 17.10 14/ 7/2017 C/2017 D2 Barros 16.0 372.781 --- 17/ 7/2017 217P LINEAR 13.7 183.988 7.85 15/ 8/2017 C/2018 F3 Johnson 19.2 371.477 --- 21/ 8/2017 359P LONEOS 20.2 469.139 9.99 27/ 8/2017 C/2015 VL62 Lemmon-Yeung-PANSTAR 13.6 406.808 --- 28/ 8/2017 C/2017 U2 Fuls 21.1 1003.458 --- 29/ 8/2017 C/2017 S2 PANSTARRS 20.8 540.253 93.25 31/ 8/2017 C/2017 Y1 PANSTARRS 20.3 555.074 --- 1/ 9/2017 145P Shoemaker-Levy 17.3 283.961 8.42 6/ 9/2017 C/2016 T3 PANSTARRS 17.3 395.905 1493.04 8/ 9/2017 P/2010 H2 Vales 13.9 461.221 7.51 8/ 9/2017 C/2014 B1 Schwartz 18.9 1428.963 --- 9/ 9/2017 1I `Oumuamua 20.4 38.280 --- 16/ 9/2017 C/2016 N4 MASTER 15.8 478.337 --- 23/ 9/2017 P/2018 A5 PANSTARRS 21.6 402.604 13.37 15/10/2017 C/2017 O1 ASASSN 12.0 223.430 --- 17/10/2017 65P Gunn 18.5 436.265 7.66 20/10/2017 C/2018 A1 PANSTARRS 18.1 361.073 125.74 1/11/2017 C/2017 W2 Leonard 20.1 591.115 50.46 14/11/2017 24P Schaumasse 9.9 176.631 8.16 21/11/2017 236P LINEAR 17.5 274.072 7.20 22/11/2017 C/2016 A1 PANSTARRS 16.7 796.058 --- 27/11/2017 C/2017 F2 PANSTARRS 20.3 1036.912 --- 29/11/2017 C/2017 F1 Lemmon 19.9 672.618 --- 2/12/2017 14P Wolf 20.6 409.722 8.79 3/12/2017 183P Korlevic-Juric 18.6 585.661 9.66 6/12/2017 C/2017 P2 PANSTARRS 16.3 369.092 --- 9/12/2017 139P Vaisala-Oterma 16.9 509.664 9.62 15/12/2017 350P McNaught 22.9 556.156 8.28 16/12/2017 C/2015 V1 PANSTARRS 15.8 638.893 --- 17/12/2017 356P WISE 20.1 401.397 8.48 18/12/2017 C/2017 U5 PANSTARRS 21.1 646.239 69.33 21/12/2017 353P McNaught 20.0 330.656 8.52 24/12/2017 C/2018 E2 Barros 19.4 586.371 --- 29/12/2017 C/2015 X5 PANSTARRS 19.7 1016.705 --- 3/ 1/2018 C/2017 K6 Jacques 15.3 298.738 --- 8/ 1/2018 C/2017 K4 ATLAS 17.0 396.832 152.71 18/ 1/2018 P/1998 VS24 LINEAR 18.3 513.390 9.64 22/ 1/2018 P/2018 H2 PANSTARRS 19.5 302.124 9.20 28/ 1/2018 C/2016 Q4 Kowalski 19.9 1060.185 69.75 30/ 1/2018 250P Larson 18.6 336.873 7.29 8/ 2/2018 245P WISE 19.8 328.364 8.13 10/ 2/2018 P/2017 Y3 Leonard 18.4 191.394 30.89 15/ 2/2018 C/2017 AB5 PANSTARRS 19.8 1377.991 --- 19/ 2/2018 C/2015 O1 PANSTARRS 15.0 557.779 --- 21/ 2/2018 C/2017 T1 Heinze 12.6 87.268 --- 25/ 2/2018 P/2018 C1 Lemmon-Read 18.8 395.127 13.45 26/ 2/2018 C/2017 S6 Catalina 16.4 231.173 --- 28/ 2/2018 P/2017 W3 Gibbs 18.7 577.954 21.96 3/ 3/2018 C/2018 R4 Fuls 18.2 256.535 6065.33 6/ 3/2018 363P Lemmon 19.9 250.791 6.68 17/ 3/2018 235P LINEAR 17.4 402.047 7.90 17/ 3/2018 C/2017 K1 PANSTARRS 19.7 1090.498 --- 20/ 3/2018 391P Kowalski 17.6 615.422 10.12 29/ 3/2018 C/2018 B1 Lemmon 19.9 765.518 --- 6/ 4/2018 C/2018 K1 Weiland 19.4 281.612 164.37 16/ 4/2018 74P Smirnova-Chernykh 15.7 546.346 8.91 17/ 4/2018 C/2018 E1 ATLAS 17.1 404.057 395.98 27/ 4/2018 C/2015 XY1 Lemmon 19.2 1185.298 --- 4/ 5/2018 37P Forbes 16.7 241.266 6.44 5/ 5/2018 143P Kowal-Mrkos 16.5 377.549 8.86 5/ 5/2018 P/2018 L5 Leonard 20.1 344.771 6.91 8/ 5/2018 253P PANSTARRS 19.9 304.023 6.46 9/ 5/2018 C/2016 R2 PANSTARRS 13.7 389.201 11331.24 15/ 5/2018 187P LINEAR 17.2 579.671 9.77 15/ 5/2018 240P NEAT 17.9 318.795 7.60 18/ 5/2018 C/2018 A4 PANSTARRS 20.4 358.852 42.60 19/ 5/2018 66P duToit 15.9 193.504 14.94 21/ 5/2018 159P LONEOS 18.9 541.533 14.17 22/ 5/2018 C/2018 EF9 Lemmon 20.1 233.076 --- 28/ 5/2018 357P Hill 22.2 377.192 9.42 31/ 5/2018 164P Christensen 15.4 251.654 6.99 1/ 6/2018 C/2018 C2 Lemmon 16.3 293.022 --- 4/ 6/2018 C/2017 M5 TOTAS 18.0 896.917 --- 5/ 6/2018 P/2018 VN2 Leonard 20.4 317.062 8.19 6/ 6/2018 C/2018 EN4 NEOWISE 18.1 217.112 77.59 9/ 6/2018 370P NEAT 19.6 371.047 16.32 15/ 6/2018 C/2017 X1 PANSTARRS 20.1 698.529 175.06 18/ 6/2018 P/2002 EJ57 LINEAR 19.3 394.490 16.46 19/ 6/2018 P/2017 P1 PANSTARRS 21.0 814.264 22.20 20/ 6/2018 367P Catalina 20.8 377.450 6.56 20/ 6/2018 P/2017 TW13 Lemmon 18.9 310.411 19.09 2/ 7/2018 361P Spacewatch 19.2 415.219 10.98 10/ 7/2018 C/2018 M1 Catalina 17.1 194.851 98.81 14/ 7/2018 49P Arend-Rigaux 16.9 214.547 6.75 17/ 7/2018 C/2016 N6 PANSTARRS 14.1 398.629 --- 18/ 7/2018 C/2017 T3 ATLAS 10.0 123.441 --- 20/ 7/2018 366P Spacewatch 20.3 340.812 6.54 22/ 7/2018 267P LONEOS 20.1 185.358 5.76 31/ 7/2018 P/2018 L4 PANSTARRS 19.4 251.277 10.98 1/ 8/2018 C/2018 N1 NEOWISE 14.4 196.024 --- 2/ 8/2018 P/2019 A3 PANSTARRS 20.9 345.689 5.58 9/ 8/2018 105P Singer Brewster 17.8 306.277 6.46 10/ 8/2018 C/2016 M1 PANSTARRS 9.7 331.083 --- 12/ 8/2018 48P Johnson 15.5 299.869 6.55 16/ 8/2018 C/2017 S3 PANSTARRS 4.1 31.080 --- 21/ 8/2018 C/2019 Q3 PANSTARRS 21.1 1085.306 --- 26/ 8/2018 243P NEAT 17.7 366.753 7.50 27/ 8/2018 125P Spacewatch 12.2 227.858 5.53 29/ 8/2018 P/2019 A6 Lemmon-PANSTARRS 20.8 289.553 12.42 31/ 8/2018 C/2018 O1 ATLAS 19.4 233.476 147.69 10/ 9/2018 21P Giacobini-Zinner 9.4 151.194 6.54 14/ 9/2018 368P NEAT 17.7 308.916 12.99 16/ 9/2018 59P Kearns-Kwee 14.6 352.402 9.51 16/ 9/2018 A/2019 G4 20.9 876.328 --- 21/ 9/2018 133P Elst-Pizarro 19.5 399.114 5.63 23/ 9/2018 C/2017 U4 PANSTARRS 20.3 1155.023 --- 1/10/2018 26P Grigg-Skjellerup 14.9 162.144 5.23 2/10/2018 P/2011 V1 Boattini 18.6 259.196 7.57 2/10/2018 P/2018 V5 Trujillo-Sheppard 22.4 703.676 26.79 4/10/2018 371P LINEAR-Skiff 19.9 327.367 8.55 9/10/2018 P/2018 P3 PANSTARRS 16.5 262.360 5.21 10/10/2018 P/2019 A1 PANSTARRS 21.3 330.766 11.59 12/10/2018 P/2005 J1 McNaught 20.2 229.835 6.75 15/10/2018 369P Hill 18.6 292.277 9.18 21/10/2018 372P McNaught 21.7 570.933 9.56 29/10/2018 P/2019 A8 PANSTARRS 20.2 258.676 6.06 4/11/2018 64P Swift-Gehrels 13.1 207.949 9.40 8/11/2018 P/2018 P4 PANSTARRS 20.1 548.577 17.24 10/11/2018 38P Stephan-Oterma 9.2 237.226 37.69 12/11/2018 P/2018 L1 PANSTARRS 19.8 282.511 6.98 20/11/2018 P/2019 A2 ATLAS 18.4 529.541 13.69 26/11/2018 C/2018 V2 ATLAS 20.1 370.686 125.85 1/12/2018 247P LINEAR 17.1 223.145 7.91 2/12/2018 C/2018 L2 ATLAS 14.3 256.268 4206.29 3/12/2018 C/2018 V1 Machholz-Fujikawa-Iwam 7.3 57.830 --- 6/12/2018 P/2013 R3 Catalina-PANSTARRS 19.2 328.943 5.28 6/12/2018 P/2013 R3-A Catalina-PANSTARRS 14.2 328.941 5.28 7/12/2018 P/2013 R3-B Catalina-PANSTARRS 14.2 328.943 5.28 9/12/2018 60P Tsuchinshan 15.1 244.941 6.61 12/12/2018 46P Wirtanen 9.0 158.063 5.44 13/12/2018 137P Shoemaker-Levy 15.1 288.443 9.61 13/12/2018 198P ODAS 12.2 299.710 6.83 13/12/2018 C/2018 F1 Grauer 19.1 447.978 4651.19 21/12/2018 375P Hill 19.2 283.807 13.10 30/12/2018 C/2018 X3 PANSTARRS 20.1 403.293 43.53 30/12/2018 C/2020 K2 PANSTARRS 20.4 1223.275 --- 1/ 1/2019 P/2018 Y2 Africano 19.7 581.918 20.38 2/ 1/2019 C/2019 M3 ATLAS 18.0 361.862 --- 9/ 1/2019 239P LINEAR 17.9 247.362 9.45 10/ 1/2019 374P Larson 20.0 399.945 11.09 10/ 1/2019 C/2018 R5 Lemmon 20.2 542.114 108.78 12/ 1/2019 C/2018 A3 ATLAS 15.7 490.004 9608.89 13/ 1/2019 171P Spahr 15.9 265.107 6.70 17/ 1/2019 C/2017 M4 ATLAS 14.1 486.678 --- 24/ 1/2019 131P Mueller 16.9 361.274 7.06 27/ 1/2019 223P Skiff 20.6 363.399 8.48 2/ 2/2019 C/2017 B3 LINEAR 15.2 586.975 --- 5/ 2/2019 123P West-Hartley 16.0 320.247 7.62 6/ 2/2019 C/2018 Y1 Iwamoto 10.7 192.210 1654.84 11/ 2/2019 P/1996 R2 Lagerkvist 18.2 387.315 7.33 21/ 2/2019 P/2019 S2 PANSTARRS 22.6 562.149 10.31 23/ 2/2019 149P Mueller 17.8 393.392 9.06 25/ 2/2019 C/2010 U3 Boattini 14.8 1263.234 --- 27/ 2/2019 C/2018 P5 PANSTARRS 21.3 684.868 45.82 1/ 3/2019 C/2018 V4 Africano 20.1 478.241 2940.91 2/ 3/2019 P/2012 O1 McNaught 21.0 214.738 6.66 18/ 3/2019 69P Taylor 22.2 341.339 7.67 19/ 3/2019 C/2019 B1 Africano 18.9 238.858 1736.87 24/ 3/2019 29P Schwassmann-Wachmann 15.8 862.984 14.84 25/ 3/2019 186P Garradd 16.9 651.609 11.05 26/ 3/2019 C/2019 LB7 Kleyna 23.6 371.518 204.24 1/ 4/2019 C/2019 L2 NEOWISE 20.2 242.501 123.91 2/ 4/2019 78P Gehrels 14.4 300.921 7.23 5/ 4/2019 232P Hill 18.7 446.235 9.48 8/ 4/2019 373P Rinner 20.3 345.870 7.42 9/ 4/2019 C/2019 J1 Lemmon 17.8 371.019 580.28 13/ 4/2019 P/2014 C1 TOTAS 17.0 250.881 5.30 15/ 4/2019 P/2017 U3 PANSTARRS 20.9 664.517 10.94 27/ 4/2019 C/2019 H1 NEOWISE 19.0 276.174 3653.05 28/ 4/2019 C/2016 X1 Lemmon 19.2 1131.237 44797.97 2/ 5/2019 138P Shoemaker-Levy 20.6 254.426 6.89 6/ 5/2019 P/2012 O2 McNaught 20.6 253.316 6.90 7/ 5/2019 P/2019 W1 PANSTARRS 21.3 499.398 9.71 10/ 5/2019 P/2019 GG21 PANSTARRS 20.5 589.404 20.43 11/ 5/2019 C/2018 W1 Catalina 17.8 203.556 101.09 11/ 5/2019 C/2019 D1 Flewelling 16.0 236.267 1692.77 31/ 5/2019 C/2019 JU6 ATLAS 18.6 306.118 6358.39 3/ 6/2019 380P PANSTARRS 19.0 451.418 9.61 5/ 6/2019 222P LINEAR 19.9 123.788 4.94 7/ 6/2019 C/2018 R3 Lemmon 12.1 192.800 --- 8/ 6/2019 C/2019 A5 PANSTARRS 21.7 945.798 100.21 9/ 6/2019 P/2019 B2 Groeller 20.3 363.016 7.61 12/ 6/2019 209P LINEAR 16.3 144.766 5.09 16/ 6/2019 231P LINEAR-NEAT 19.4 453.205 8.08 16/ 6/2019 C/2019 K4 Ye 18.2 338.144 --- 17/ 6/2019 P/2000 R2 LINEAR 21.2 242.906 6.45 18/ 6/2019 261P Larson 19.2 301.163 6.52 22/ 6/2019 C/2019 K5 Young 17.8 304.545 2007.58 22/ 6/2019 P/2019 M2 ATLAS 18.2 159.285 5.27 26/ 6/2019 P/1999 RO28 LONEOS 21.3 168.050 6.34 4/ 7/2019 31P Schwassmann-Wachmann 21.6 512.294 8.73 8/ 7/2019 C/2018 X2 Fitzsimmons 17.6 318.112 1770.62 14/ 7/2019 C/2018 A6 Gibbs 16.2 451.660 59.76 19/ 7/2019 C/2019 J2 Palomar 16.6 258.397 --- 19/ 7/2019 P/2019 X1 Pruyne 20.3 643.573 15.35 21/ 7/2019 C/2019 K8 ATLAS 19.1 477.952 --- 22/ 7/2019 A/2019 Q2 19.2 188.080 432.36 23/ 7/2019 388P Gibbs 18.3 299.711 12.01 26/ 7/2019 C/2019 A9 PANSTARRS 18.2 214.046 249.19 29/ 7/2019 200P Larsen 16.6 493.339 10.98 29/ 7/2019 C/2020 A3 ATLAS 19.6 873.555 --- 1/ 8/2019 379P Spacewatch 20.7 347.890 6.61 1/ 8/2019 C/2019 J3 ATLAS 18.6 355.218 --- 1/ 8/2019 P/2019 T5 ATLAS 18.6 228.530 22.65 2/ 8/2019 P/2006 F4 Spacewatch 20.7 347.931 6.61 4/ 8/2019 264P Larsen 19.1 364.360 7.69 5/ 8/2019 163P NEAT 20.0 308.976 7.31 5/ 8/2019 168P Hergenrother 17.2 203.167 6.78 11/ 8/2019 C/2019 L1 PANSTARRS 19.5 432.619 30.86 17/ 8/2019 P/2012 K3 Gibbs 18.7 312.747 6.90 18/ 8/2019 C/2018 DO4 Lemmon 17.2 360.468 130.48 26/ 8/2019 P/2019 S3 PANSTARRS 21.0 270.247 6.31 28/ 8/2019 396P 21.5 595.741 17.81 31/ 8/2019 322P SOHO 6.7 9.024 3.97 5/ 9/2019 C/2018 W2 Africano 10.9 217.721 --- 6/ 9/2019 387P Boattini 16.9 189.466 10.51 8/ 9/2019 A/2018 V3 15.9 200.560 1354.68 9/ 9/2019 C/2018 KJ3 Lemmon 18.0 542.962 --- 9/ 9/2019 C/2019 F2 ATLAS 18.0 335.110 68.45 10/ 9/2019 260P McNaught 13.9 211.855 6.90 10/ 9/2019 C/2020 R6 Rankin 18.5 467.679 13379.70 14/ 9/2019 385P Hill 18.7 383.986 8.88 14/ 9/2019 C/2017 U7 16.2 960.890 --- 18/ 9/2019 P/2019 U4 PANSTARRS 21.8 276.211 6.61 27/ 9/2019 376P LONEOS 19.7 421.537 14.11 27/ 9/2019 381P LINEAR-Spacewatch 19.9 339.029 19.01 28/ 9/2019 P/2005 GF8 LONEOS 18.7 421.537 14.12 2/10/2019 175P Hergenrother 19.2 291.670 6.39 11/10/2019 384P Kowalski 17.4 166.857 4.94 19/10/2019 C/2020 B3 Rankin 21.3 500.264 --- 25/10/2019 393P Spacewatch-Hill 19.9 629.720 10.47 26/10/2019 76P West-Kohoutek-Ikemura 18.1 239.958 6.47 26/10/2019 383P Christensen 19.7 212.350 6.68 7/11/2019 P/2019 T6 PANSTARRS 18.8 306.854 12.67 9/11/2019 68P Klemola 13.9 268.489 11.02 10/11/2019 C/2018 N2 ASASSN 12.8 467.479 --- 12/11/2019 P/2003 F2 NEAT 21.8 444.806 16.56 14/11/2019 155P Shoemaker 17.3 269.464 16.88 30/11/2019 294P LINEAR 18.1 193.597 5.74 30/11/2019 394P PANSTARRS 20.9 409.648 9.02 30/11/2019 P/2013 T2 Schwartz 19.7 260.411 6.52 2/12/2019 160P LINEAR 18.2 267.452 7.33 4/12/2019 C/2018 F4 PANSTARRS 17.5 514.696 --- 7/12/2019 401P McNaught 18.8 362.566 13.87 8/12/2019 2I Borisov 15.5 300.180 --- 9/12/2019 A/2019 G2 19.7 342.692 --- 20/12/2019 289P Blanpain 14.9 143.408 5.32 21/12/2019 A/2020 H9 22.7 385.870 --- 23/12/2019 P/2020 M1 PANSTARRS 21.3 398.773 11.61 29/12/2019 389P Siding Spring 20.1 248.874 13.35 8/ 1/2020 C/2020 A2 Iwamoto 14.5 146.249 --- 12/ 1/2020 101P Chernykh 16.3 350.769 13.98 14/ 1/2020 114P Wiseman-Skiff 14.1 236.167 6.68 17/ 1/2020 321P SOHO 7.2 7.737 3.77 22/ 1/2020 306P LINEAR 21.7 190.008 5.52 1/ 2/2020 407P PANSTARRS-Fuls 18.2 318.196 6.43 7/ 2/2020 112P Urata-Niijima 18.0 216.326 6.62 10/ 2/2020 A/2019 O4 21.5 545.307 188.65 12/ 2/2020 C/2019 K1 ATLAS 14.9 301.094 --- 3/ 3/2020 C/2020 K4 PANSTARRS 20.9 262.266 116.63 4/ 3/2020 203P Korlevic 20.2 478.585 10.10 9/ 3/2020 228P LINEAR 19.2 513.927 8.52 15/ 3/2020 C/2019 Y1 ATLAS 13.7 124.396 794.59 17/ 3/2020 P/2020 G1 Pimentel 14.3 75.691 6.86 22/ 3/2020 390P Gibbs 16.4 254.275 13.98 26/ 3/2020 C/2017 K5 PANSTARRS 18.3 1149.018 --- 31/ 3/2020 392P LINEAR 19.2 291.666 15.24 4/ 4/2020 P/2020 W1 Rankin 21.2 791.042 19.31 7/ 4/2020 210P Christensen 11.4 79.021 5.63 7/ 4/2020 C/2019 S4 Lemmon 19.3 514.927 3581.21 8/ 4/2020 P/2005 T2 Christensen 20.3 335.821 7.54 11/ 4/2020 C/2020 F6 PANSTARRS 20.4 525.254 7854.26 15/ 4/2020 313P Gibbs 21.5 361.918 5.62 19/ 4/2020 266P Christensen 20.6 349.266 6.64 26/ 4/2020 124P Mrkos 17.3 246.607 6.05 27/ 4/2020 354P LINEAR 20.7 299.474 3.46 27/ 4/2020 C/2020 H2 Pruyne 16.7 124.729 --- 2/ 5/2020 P/2020 O1 Lemmon-PANSTARRS 20.7 348.346 4.30 4/ 5/2020 C/2017 T2 PANSTARRS 8.2 241.668 --- 5/ 5/2020 C/2019 C1 22.1 984.498 19776.18 6/ 5/2020 P/2003 T12 SOHO 15.8 89.125 4.16 9/ 5/2020 87P Bus 15.7 314.245 6.39 20/ 5/2020 C/2019 K6 PANSTARRS 19.8 587.739 --- 27/ 5/2020 58P Jackson-Neujmin 17.0 206.089 8.26 27/ 5/2020 C/2020 F8 SWAN 6.1 64.397 --- 28/ 5/2020 P/2020 R5 PANSTARRS 20.4 510.649 11.11 31/ 5/2020 36P Whipple 21.9 452.061 8.40 31/ 5/2020 C/2019 Y4 ATLAS 2.5 37.862 --- 31/ 5/2020 C/2019 Y4-A ATLAS 2.3 37.581 --- 31/ 5/2020 C/2019 Y4-B ATLAS 3.5 37.808 --- 31/ 5/2020 C/2019 Y4-C ATLAS 3.4 37.738 --- 31/ 5/2020 C/2019 Y4-D ATLAS 3.2 37.651 --- 1/ 6/2020 C/2020 K3 Leonard 17.8 236.822 --- 2/ 6/2020 C/2020 H7 Lemmon 20.3 661.155 --- 3/ 6/2020 84P Giclas 16.2 257.129 6.69 5/ 6/2020 C/2020 H3 Wierzchos 18.2 344.119 --- 6/ 6/2020 C/2020 H8 PANSTARRS 20.3 699.885 --- 17/ 6/2020 C/2019 K7 Smith 15.6 669.507 --- 18/ 6/2020 C/2019 U6 14.0 136.785 --- 19/ 6/2020 258P PANSTARRS 21.4 520.791 9.23 19/ 6/2020 397P Lemmon 17.9 340.645 7.49 25/ 6/2020 2P Encke 4.8 50.454 3.30 29/ 6/2020 249P LINEAR 11.4 74.358 4.59 3/ 7/2020 C/2020 F3 NEOWISE 8.6 44.204 --- 11/ 7/2020 377P Scotti 19.9 750.551 17.38 16/ 7/2020 178P Hug-Bell 19.2 281.428 6.92 16/ 7/2020 C/2019 V1 Borisov 18.9 463.334 --- 20/ 7/2020 C/2019 Q1 Lemmon 18.7 747.693 --- 21/ 7/2020 P/2020 X1 ATLAS 20.0 429.874 9.61 29/ 7/2020 115P Maury 15.4 307.681 8.83 8/ 8/2020 P/2020 S5 PANSTARRS 20.5 400.749 8.15 12/ 8/2020 304P Ory 18.2 188.279 5.59 14/ 8/2020 C/2020 Q1 Borisov 16.2 196.721 456.02 19/ 8/2020 386P PANSTARRS 20.9 354.254 8.17 23/ 8/2020 C/2020 N2 ATLAS 18.6 268.397 1126.03 29/ 8/2020 C/2020 H4 Leonard 15.8 138.690 334.14 6/ 9/2020 298P Christensen 21.0 329.581 6.81 10/ 9/2020 257P Catalina 18.0 320.516 7.30 10/ 9/2020 P/2013 W1 PANSTARRS 20.8 212.621 6.52 12/ 9/2020 278P McNaught 19.1 312.137 7.11 14/ 9/2020 C/2020 K8 Catalina-ATLAS 12.6 71.009 --- 15/ 9/2020 406P Gibbs 18.3 244.887 6.76 16/ 9/2020 403P Catalina 18.6 403.192 12.64 17/ 9/2020 296P Garradd 18.3 272.730 6.54 25/ 9/2020 312P NEAT 19.1 296.708 6.45 26/ 9/2020 88P Howell 14.4 202.413 5.47 26/ 9/2020 317P WISE 19.9 190.504 5.11 29/ 9/2020 254P McNaught 17.8 469.307 9.90 30/ 9/2020 331P Gibbs 18.2 431.030 5.21 1/10/2020 233P La Sagra 19.1 266.665 5.28 3/10/2020 218P LINEAR 18.2 174.974 5.44 7/10/2020 311P PANSTARRS 20.8 289.626 3.24 9/10/2020 C/2020 T5 Lemmon 20.1 282.600 --- 17/10/2020 P/2015 X6 PANSTARRS 20.9 340.799 4.57 19/10/2020 P/2005 Y2 McNaught 17.1 505.600 16.14 20/10/2020 378P McNaught 20.1 505.599 16.14 20/10/2020 C/2020 P1 NEOWISE 9.6 51.186 --- 22/10/2020 P/2019 V2 Groeller 20.8 750.452 20.58 25/10/2020 C/2020 M3 ATLAS 13.6 189.730 139.16 25/10/2020 C/2020 M3 ATLAS 13.6 189.730 139.16 26/10/2020 184P Lovas 15.8 254.818 7.39 4/11/2020 C/2017 Y2 PANSTARRS 25.3 692.975 --- 9/11/2020 91P Russell 16.5 389.597 7.68 11/11/2020 C/2020 X4 Leonard 19.7 779.341 321.52 11/11/2020 P/2021 A5 PANSTARRS 20.4 392.044 5.32 14/11/2020 C/2020 H5 Robinson 19.7 1401.343 34482.82 15/11/2020 C/2020 X2 ATLAS 18.9 572.727 66.35 16/11/2020 P/2009 WX51 Catalina 19.1 119.697 5.41 17/11/2020 156P Russell-LINEAR 14.7 199.423 6.44 18/11/2020 P/2020 S7 PANSTARRS 21.1 442.974 11.26 23/11/2020 A/2020 M4 22.6 890.477 --- 23/11/2020 P/2020 S6 Leonard 18.5 280.470 6.83 26/11/2020 11P Tempel-Swift-LINEAR 9.0 207.759 5.95 26/11/2020 P/2007 Q2 Gilmore 20.3 278.956 13.44 30/11/2020 C/2020 W5 Lemmon 22.3 503.280 --- 1/12/2020 C/2019 N1 ATLAS 11.7 255.000 --- 3/12/2020 C/2020 Y3 ATLAS 18.6 299.192 2138.48 5/12/2020 412P WISE 20.4 241.980 5.48 7/12/2020 162P Siding Spring 13.0 192.859 5.43 7/12/2020 C/2021 C1 Rankin 20.0 521.160 --- 10/12/2020 220P McNaught 18.5 232.233 5.50 10/12/2020 A/2021 E2 21.7 342.027 1675.05 12/12/2020 C/2020 S3 Erasmus 10.8 59.667 --- 16/12/2020 141P Machholz 13.1 120.865 5.35 19/12/2020 293P Spacewatch 18.5 317.116 6.96 21/12/2020 C/2020 S2 PANSTARRS 20.1 262.707 32.50 24/12/2020 405P Lemmon 16.4 167.831 6.86 25/12/2020 P/2020 U2 PANSTARRS 20.8 276.583 7.34 26/12/2020 398P Boattini 14.5 195.328 5.53 30/12/2020 277P LINEAR 18.2 284.903 7.56 4/ 1/2021 98P Takamizawa 15.5 248.773 7.41 14/ 1/2021 A/2019 T1 19.6 640.523 236.72 16/ 1/2021 P/2020 S1 PANSTARRS 21.2 440.914 14.63 17/ 1/2021 320P McNaught 21.8 145.448 5.44 17/ 1/2021 323P SOHO 8.6 10.853 4.15 18/ 1/2021 C/2021 C4 ATLAS 19.0 674.184 --- 20/ 1/2021 C/2019 B3 PANSTARRS 18.1 1020.805 --- 20/ 1/2021 P/2020 T3 PANSTARRS 19.4 214.912 6.60 22/ 1/2021 102P Shoemaker 15.0 309.657 7.44 22/ 1/2021 297P Beshore 21.0 350.575 6.39 22/ 1/2021 C/2021 A2 NEOWISE 14.0 211.462 --- 24/ 1/2021 411P Christensen 18.2 364.828 14.04 25/ 1/2021 414P STEREO 14.9 78.752 4.67 28/ 1/2021 409P LONEOS-Hill 16.5 262.399 14.88 30/ 1/2021 P/2020 O3 PANSTARRS 21.7 623.331 10.04 1/ 2/2021 P/2009 U4 McNaught 18.3 246.317 11.46 5/ 2/2021 C/2020 U3 Rankin 20.5 340.516 522.68 7/ 2/2021 P/2010 H3 SOHO 14.7 12.686 5.29 7/ 2/2021 P/2020 V3 PANSTARRS 20.0 932.091 24.19 9/ 2/2021 265P LINEAR 18.0 224.244 8.77 10/ 2/2021 400P PANSTARRS 19.5 314.657 6.72 11/ 2/2021 P/2020 K9 Lemmon-PANSTARRS 19.9 426.269 8.61 12/ 2/2021 C/2021 C3 Catalina 18.7 340.557 503.84 13/ 2/2021 P/2014 U4 PANSTARRS 22.9 280.663 6.56 14/ 2/2021 415P Tenagra 19.1 495.753 8.35 15/ 2/2021 416P Scotti 19.4 327.609 8.04 19/ 2/2021 17P Holmes 17.2 311.268 6.93 22/ 2/2021 246P NEAT 17.5 428.440 8.05 27/ 2/2021 P/2021 C2 PANSTARRS 21.9 731.587 29.46 27/ 2/2021 C/2021 D1 SWAN 13.7 134.905 883.96 1/ 3/2021 C/2020 R4 ATLAS 14.8 153.869 939.53 2/ 3/2021 C/2019 T3 ATLAS 18.6 889.557 --- 4/ 3/2021 206P Barnard-Boattini 22.8 234.083 6.51 8/ 3/2021 C/2019 O3 Palomar 17.8 1319.375 --- 11/ 3/2021 28P Neujmin 13.5 236.110 18.43 11/ 3/2021 C/2021 B3 NEOWISE 18.4 322.865 172.87 12/ 3/2021 C/2020 N1 PANSTARRS 14.2 197.576 --- 15/ 3/2021 C/2021 A10 NEOWISE 20.6 189.772 905.33 19/ 3/2021 C/2021 A4 NEOWISE 16.8 171.411 305.52 20/ 3/2021 191P McNaught 19.0 333.926 6.93 22/ 3/2021 P/2016 G1 PANSTARRS 19.3 304.863 4.15 24/ 3/2021 10P Tempel 16.3 211.303 5.36 24/ 3/2021 C/2020 F5 MASTER 15.1 647.265 --- 10/ 4/2021 C/2020 S8 Lemmon 17.1 353.638 4544.49 18/ 4/2021 16P Brooks 16.6 280.955 6.99 19/ 4/2021 C/2020 J1 SONEAR 14.8 502.639 10459.86 20/ 4/2021 C/2020 P3 ATLAS 18.6 1019.106 --- 22/ 4/2021 417P NEOWISE 17.8 223.200 6.13 22/ 4/2021 C/2019 T2 Lemmon 15.5 395.835 --- 27/ 4/2021 C/2021 A6 PANSTARRS 20.3 1186.608 --- 4/ 5/2021 C/2021 B2 PANSTARRS 20.5 376.910 9273.49 5/ 5/2021 324P La Sagra 19.6 391.736 5.45 7/ 5/2021 120P Mueller 18.6 370.683 7.88 11/ 5/2021 C/2016 Q2 PANSTARRS 18.7 1059.430 --- 12/ 5/2021 142P Ge-Wang 15.5 375.949 11.19 14/ 5/2021 158P Kowal-LINEAR 19.1 717.941 11.06 18/ 5/2021 C/2014 F3 Sheppard-Trujillo 17.4 851.136 61.18 22/ 5/2021 399P PANSTARRS 21.3 313.562 7.38 26/ 5/2021 201P LONEOS 16.6 182.120 6.14 27/ 5/2021 7P Pons-Winnecke 14.0 184.638 6.31 5/ 6/2021 C/2020 K5 PANSTARRS 13.9 229.709 --- 10/ 6/2021 P/2016 P1 PANSTARRS 19.6 339.619 5.71 15/ 6/2021 111P Helin-Roman-Crockett 19.8 554.654 8.44 17/ 6/2021 P/2016 BA14 PANSTARRS 21.9 151.517 5.26 19/ 6/2021 P/2014 W12 Gibbs 18.3 250.523 6.60 22/ 6/2021 C/2019 F1 ATLAS-Africano 13.5 537.889 --- 23/ 6/2021 410P NEAT-LINEAR 20.8 485.748 17.07 5/ 7/2021 C/2020 T4 PANSTARRS 17.8 327.914 --- 10/ 7/2021 252P LINEAR 18.6 149.690 5.33 11/ 7/2021 C/2020 T2 Palomar 14.6 307.380 5559.84 13/ 7/2021 15P Finlay 12.3 148.400 6.56 15/ 7/2021 C/2021 A7 NEOWISE 15.2 294.489 --- 17/ 7/2021 P/2020 V4 Rankin 20.0 770.218 28.54 20/ 7/2021 413P Larson 18.9 320.120 7.15 25/ 7/2021 241P LINEAR 18.3 286.853 10.90 18/ 8/2021 106P Schuster 17.3 228.686 7.30 18/ 8/2021 332P Ikeya-Murakami 22.0 235.933 5.43 18/ 8/2021 332P-C Ikeya-Murakami 20.5 235.927 5.43 18/ 8/2021 332P-H Ikeya-Murakami 23.0 235.927 5.43 19/ 8/2021 C/2020 M5 ATLAS 16.6 449.448 --- 25/ 8/2021 193P LINEAR-NEAT 17.8 324.308 6.77 26/ 8/2021 P/2008 WZ96 LINEAR 17.3 276.571 6.51 26/ 8/2021 C/2020 K6 Rankin 19.5 896.433 --- 27/ 8/2021 8P Tuttle 9.6 153.497 13.63 28/ 8/2021 C/2020 O2 Amaral 16.9 727.720 --- 8/ 9/2021 283P Spacewatch 20.1 318.967 8.42 9/ 9/2021 4P Faye 11.7 242.186 7.48 10/ 9/2021 108P Ciffreo 15.4 248.379 7.23 12/ 9/2021 284P McNaught 17.2 343.397 7.06 17/ 9/2021 6P d'Arrest 9.9 202.650 6.54 20/ 9/2021 P/2005 W3 Kowalski 18.5 432.348 15.92 20/ 9/2021 P/2008 CL94 Lemmon 19.2 810.850 15.30 24/ 9/2021 P/2004 R3 LINEAR-NEAT 22.1 530.531 10.50 30/ 9/2021 C/2020 H6 ATLAS 17.1 703.805 --- 5/10/2021 52P Harrington-Abell 19.0 265.865 7.59 5/10/2021 C/2020 K7 PANSTARRS 19.0 844.416 --- 17/10/2021 57P du Toit-Neujmin-Delporte 17.3 257.330 6.40 17/10/2021 418P LINEAR 17.4 254.752 11.46 18/10/2021 110P Hartley 14.5 367.369 6.83 19/10/2021 342P SOHO -3.6 8.465 5.31 24/10/2021 282P 19.4 514.771 8.74 26/10/2021 P/2012 TK8 Tenagra 19.4 448.113 8.38 27/10/2021 419P PANSTARRS 19.3 380.472 6.61 31/10/2021 P/2012 S2 La Sagra 17.8 203.827 9.27 2/11/2021 67P Churyumov-Gerasimenko 10.0 181.099 6.43 2/11/2021 P/2005 L1 McNaught 17.3 470.141 7.93 2/11/2021 C/2018 U1 Lemmon 15.8 746.934 --- 3/11/2021 70P Kojima 17.2 300.535 7.05 13/11/2021 132P Helin-Roman-Alu 14.0 253.049 7.67 13/11/2021 C/2021 C6 Lemmon 19.7 489.360 --- 14/11/2021 C/2020 F7 Lemmon 19.3 797.644 20355.61 1/12/2021 P/2011 A2 Scotti 19.6 232.559 5.47 8/12/2021 P/2007 R4 Garradd 18.7 292.776 14.45 14/12/2021 402P LINEAR 16.4 589.090 18.56 17/12/2021 173P Mueller 16.5 630.835 13.62 18/12/2021 221P LINEAR 19.1 262.285 6.43 30/12/2021 395P Catalina-NEAT 19.5 608.080 16.71 2/ 1/2022 P/2008 QP20 LINEAR-Hill 19.1 270.139 6.70 3/ 1/2022 C/2021 A1 Leonard 6.2 92.031 --- 8/ 1/2022 181P Shoemaker-Levy 13.1 173.490 7.62 9/ 1/2022 C/2019 L3 ATLAS 12.1 531.698 --- 11/ 1/2022 104P Kowal 15.3 160.456 5.75 13/ 1/2022 152P Helin-Lawrence 20.5 463.025 9.48 13/ 1/2022 205P Giacobini 16.7 228.911 6.67 14/ 1/2022 P/2006 S4 Christensen 18.8 464.529 15.87 1/ 2/2022 19P Borrelly 7.9 195.414 6.85 4/ 2/2022 C/2021 D2 ZTF 15.7 440.494 --- 7/ 2/2022 86P Wild 18.6 338.211 6.84 7/ 2/2022 P/2011 W1 PANSTARRS 19.0 496.981 10.06 8/ 2/2022 259P Garradd 20.3 270.153 4.51 12/ 2/2022 348P PANSTARRS 18.6 326.759 5.59 13/ 2/2022 P/2015 Q1 Scotti 18.3 271.246 6.48 15/ 2/2022 97P Metcalf-Brewington 13.9 384.585 10.41 19/ 2/2022 P/2016 J1-B PANSTARRS 23.1 366.514 5.65 20/ 2/2022 P/2016 J1-A PANSTARRS 22.6 366.485 5.65 24/ 2/2022 C/2020 R2 PANSTARRS 19.3 701.982 8271.52 3/ 3/2022 288P 20.6 364.335 5.33 4/ 3/2022 9P Tempel 15.6 231.013 5.58 18/ 3/2022 22P Kopff 15.9 232.272 6.38 19/ 3/2022 230P LINEAR 16.7 234.558 6.42 24/ 3/2022 382P Larson 18.1 658.092 16.05 28/ 3/2022 P/1997 B1 Kobayashi 17.2 307.550 25.10 29/ 3/2022 325P Yang-Gao 15.9 214.265 6.61 31/ 3/2022 319P Catalina-McNaught 17.2 177.923 6.74 6/ 4/2022 A/2021 F1 16.4 148.914 --- 7/ 4/2022 135P Shoemaker-Levy 17.1 400.940 7.42 7/ 4/2022 C/2020 U4 PANSTARRS 18.2 800.932 --- 8/ 4/2022 274P Tombaugh-Tenagra 18.9 366.978 9.14 12/ 4/2022 99P Kowal 17.4 703.987 15.10 23/ 4/2022 44P Reinmuth 15.5 316.019 7.08 25/ 4/2022 45P Honda-Mrkos-Pajdusakova 9.4 83.320 5.33 27/ 4/2022 C/2020 U5 PANSTARRS 16.8 561.882 --- 12/ 5/2022 182P LONEOS 19.0 148.882 5.07 12/ 5/2022 286P Christensen 19.6 353.271 8.33 22/ 5/2022 420P Hill 18.3 417.152 12.97 29/ 5/2022 179P Jedicke 18.3 616.189 14.46 29/ 5/2022 P/2012 O3 McNaught 19.7 241.529 9.78 31/ 5/2022 113P Spitaler 19.3 320.390 7.12 6/ 6/2022 238P Read 20.6 354.088 5.63 9/ 6/2022 C/2019 T4 ATLAS 14.2 634.657 --- 13/ 6/2022 148P Anderson-LINEAR 13.2 244.043 6.91 17/ 6/2022 C/2020 Y2 ATLAS 14.1 468.651 --- 19/ 6/2022 P/2013 G4 PANSTARRS 21.2 392.195 9.36 1/ 7/2022 337P WISE 18.4 247.454 5.96 7/ 7/2022 117P Helin-Roman-Alu 17.2 454.831 8.26 9/ 7/2022 169P NEAT 15.5 90.245 4.20 16/ 7/2022 C/2020 F2 ATLAS 18.7 1318.985 --- 17/ 7/2022 116P Wild 13.1 328.553 6.52 17/ 7/2022 272P NEAT 20.6 363.807 9.41 10/ 8/2022 100P Hartley 13.9 301.737 6.36 10/ 8/2022 119P Parker-Hartley 13.1 348.257 7.46 11/ 8/2022 127P Holt-Olmstead 17.6 330.475 6.41 12/ 8/2022 335P Gibbs 21.2 243.128 6.77 19/ 8/2022 P/2011 Q3 McNaught 17.9 347.476 11.08 19/ 8/2022 P/2014 R5 Lemmon-PANSTARRS 19.5 355.793 8.17 24/ 8/2022 107P Wilson-Harrington 7.5 144.718 4.25 25/ 8/2022 73P Schwassmann-Wachmann 11.4 145.502 5.44 27/ 8/2022 73P-T Schwassmann-Wachmann 11.4 145.477 5.44 28/ 8/2022 189P NEAT 19.2 181.290 5.06 2/ 9/2022 327P Van Ness 17.1 232.879 6.72 6/ 9/2022 255P Levy 9.3 126.249 5.05 7/ 9/2022 P/2015 X1 PANSTARRS 20.0 315.689 6.92 8/ 9/2022 157P Tritton 13.4 234.378 6.69 13/ 9/2022 41P Tuttle-Giacobini-Kresak 12.3 156.993 5.42 16/ 9/2022 P/2017 S8 PANSTARRS 19.8 252.983 4.64 16/ 9/2022 C/2020 R7 ATLAS 13.1 442.219 --- 26/ 9/2022 214P LINEAR 18.0 278.270 6.88 30/ 9/2022 224P LINEAR-NEAT 19.6 305.335 6.39 1/10/2022 51P-A Harrington 20.0 253.299 7.14 1/10/2022 51P-D Harrington 20.0 253.298 7.14 1/10/2022 51P-D Harrington 20.0 253.296 7.14 1/10/2022 51P-D Harrington 20.0 253.299 7.14 1/10/2022 51P-D Harrington 20.0 253.299 7.14 1/10/2022 408P Novichonok-Gerke 18.7 519.386 10.40 3/10/2022 51P-A Harrington 14.1 253.330 7.14 4/10/2022 51P-A Harrington 14.1 253.325 7.14 4/10/2022 211P Hill 18.4 348.409 6.68 8/10/2022 P/2007 S1 Zhao 18.0 376.945 7.45 24/10/2022 61P Shajn-Schaldach 14.5 317.709 7.08 29/10/2022 196P Tichy 17.2 324.948 7.41 16/11/2022 204P LINEAR-NEAT 17.5 275.764 6.83 16/11/2022 244P Scotti 17.4 586.706 10.83 19/11/2022 P/2010 TO20 LINEAR-Grauer 20.2 824.308 14.08 22/11/2022 118P Shoemaker-Levy 15.1 274.023 6.17 23/11/2022 176P LINEAR 18.6 385.545 5.71 29/11/2022 P/2007 A2 Christensen 19.9 418.653 15.92 3/12/2022 129P Shoemaker-Levy 19.7 586.928 8.86 7/12/2022 197P LINEAR 18.2 158.890 4.86 8/12/2022 80P Peters-Hartley 13.1 241.514 8.07 15/12/2022 81P Wild 11.5 239.044 6.41 19/12/2022 C/2017 K2 PANSTARRS 6.0 268.935 --- 6/ 1/2023 P/2013 YG46 Spacewatch 14.7 267.149 5.93 12/ 1/2023 285P LINEAR 19.1 257.387 9.57 21/ 1/2023 71P Clark 14.8 237.568 5.56 31/ 1/2023 96P Machholz -0.6 17.525 5.27 31/ 1/2023 263P Gibbs 7.6 186.237 5.33 2/ 2/2023 281P MOSS 19.5 603.539 10.75 9/ 2/2023 C/2020 S4 PANSTARRS 14.6 503.917 --- 10/ 2/2023 C/2021 C5 PANSTARRS 16.8 484.829 --- 26/ 2/2023 P/2019 A4 PANSTARRS 20.3 356.825 4.23 27/ 2/2023 P/2017 S9 PANSTARRS 22.8 327.768 5.60 12/ 3/2023 256P LINEAR 17.8 403.684 9.99 19/ 3/2023 P/2017 S5 ATLAS 19.9 324.949 5.64 30/ 3/2023 C/2019 U5 PANSTARRS 12.2 541.906 --- 3/ 4/2023 77P Longmore 15.2 351.044 6.89 8/ 4/2023 A/2019 O2 19.2 1448.203 434.42 10/ 4/2023 300P Catalina 16.2 124.512 4.44 18/ 4/2023 P/2014 A3 PANSTARRS 20.5 520.714 9.95 19/ 4/2023 279P La Sagra 19.7 321.666 6.76 21/ 4/2023 170P Christensen 19.6 437.315 8.60 6/ 5/2023 291P NEAT 19.8 381.819 9.62 8/ 5/2023 C/2020 K1 PANSTARRS 12.5 459.779 --- 8/ 5/2023 C/2020 V2 ZTF 10.9 333.320 --- 11/ 5/2023 P/2008 L2 Hill 18.6 348.861 14.80 13/ 5/2023 364P PANSTARRS 14.8 119.655 4.89 14/ 5/2023 237P LINEAR 16.6 297.127 6.58 20/ 5/2023 39P Oterma 22.5 858.035 20.10 21/ 5/2023 94P Russell 15.9 333.251 6.57 16/ 6/2023 72P Denning-Fujikawa 15.7 117.134 8.95 27/ 6/2023 121P Shoemaker-Holt 21.3 558.622 9.82 1/ 7/2023 P/2012 WA34 Lemmon-PANSTARRS 21.5 464.175 10.32 4/ 7/2023 287P Christensen 20.3 454.368 8.50 5/ 7/2023 126P IRAS 12.5 256.286 13.39 12/ 7/2023 180P NEAT 17.3 373.844 7.59 13/ 7/2023 185P Petriew 15.7 139.447 5.46 20/ 7/2023 347P PANSTARRS 20.0 331.388 6.85 4/ 8/2023 280P Larsen 18.8 394.572 9.64 7/ 8/2023 199P Shoemaker 16.3 435.549 14.31 8/ 8/2023 225P LINEAR 19.7 197.667 6.97 31/ 8/2023 339P Gibbs 20.0 201.517 7.11 13/ 9/2023 404P Bressi 19.2 624.344 10.64 14/ 9/2023 P/2019 A7 PANSTARRS 19.5 399.747 5.69 29/ 9/2023 P/2005 E1 Tubbiolo 20.1 658.057 18.68 30/ 9/2023 79P du Toit-Hartley 18.1 167.808 5.05 11/10/2023 365P PANSTARRS 20.0 201.018 5.66 12/10/2023 103P Hartley 7.1 159.554 6.48 24/10/2023 310P Hill 18.2 361.394 8.54 11/11/2023 213P Van Ness 15.2 296.376 6.13 11/11/2023 358P PANSTARRS 22.7 358.636 5.58 12/11/2023 C/2019 E3 ATLAS 17.7 1543.041 --- 17/11/2023 P/2007 T2 Kowalski 16.1 97.846 5.32 22/11/2023 P/2004 V3 Siding Spring 20.5 591.510 19.08 24/11/2023 C/2021 A9 PANSTARRS 19.1 1152.664 --- 8/12/2023 147P Kushida-Muramatsu 20.5 458.721 7.97 20/12/2023 P/2014 W1 PANSTARRS 21.6 408.031 9.43 22/12/2023 62P Tsuchinshan 9.1 185.140 6.13 27/12/2023 226P Pigott-LINEAR-Kowalski 15.8 265.764 7.31 30/12/2023 326P Hill 20.1 414.795 8.19 7/ 1/2024 216P LINEAR 17.4 320.409 7.61 16/ 1/2024 P/2011 NO1 Elenin 16.9 186.196 12.99 25/ 1/2024 144P Kushida 10.4 207.662 7.46 1/ 2/2024 207P NEAT 13.5 139.119 7.61 7/ 2/2024 194P LINEAR 17.7 249.002 7.94 12/ 2/2024 251P LINEAR 19.4 259.898 6.58 13/ 2/2024 219P LINEAR 17.3 352.771 6.97 28/ 2/2024 P/2001 Q6 NEAT 16.4 210.674 22.43 14/ 3/2024 150P LONEOS 15.8 262.945 7.64 14/ 3/2024 227P Catalina-LINEAR 17.8 260.049 6.71 23/ 3/2024 P/2010 T2 PANSTARRS 20.5 560.901 12.99 25/ 3/2024 89P Russell 18.8 332.121 7.27 29/ 3/2024 309P LINEAR 19.1 250.048 9.14 1/ 4/2024 355P LINEAR-NEAT 18.8 255.980 6.47 14/ 4/2024 130P McNaught-Hughes 15.8 272.663 6.22 20/ 4/2024 12P Pons-Brooks 4.4 116.963 70.87 23/ 4/2024 32P Comas Sola 14.3 296.386 9.54 25/ 4/2024 212P NEAT 19.6 239.095 7.66 30/ 4/2024 299P Catalina-PANSTARRS 18.2 471.324 9.18 13/ 5/2024 50P Arend 16.1 288.177 8.27 22/ 5/2024 202P Scotti 21.1 442.249 8.14 24/ 5/2024 192P Shoemaker-Levy 18.4 219.770 16.48 27/ 5/2024 349P Lemmon 19.0 374.692 6.75 4/ 6/2024 P/2004 DO29 Spacewatch-LINEAR 19.4 608.986 19.66 14/ 6/2024 154P Brewington 10.1 233.104 10.53 1/ 7/2024 13P Olbers 7.5 175.639 68.28 20/ 7/2024 362P 17.1 427.775 7.91 22/ 7/2024 P/2002 T6 NEAT-LINEAR 18.8 504.932 21.28 22/ 7/2024 P/2010 WK LINEAR 17.6 267.239 13.83 28/ 7/2024 328P LONEOS-Tucker 18.5 281.090 8.59 3/ 8/2024 338P McNaught 17.2 343.146 7.69 5/ 8/2024 146P Shoemaker-LINEAR 17.1 212.970 8.10 14/ 8/2024 30P Reinmuth 15.2 257.989 7.05 23/ 8/2024 208P McMillan 17.6 379.011 8.14 29/ 8/2024 345P LINEAR 18.7 470.675 8.12 3/ 9/2024 54P de Vico-Swift-NEAT 12.9 325.664 7.38 7/ 9/2024 P/2014 MG4 Spacewatch-PANSTARRS 18.1 555.162 11.22 3/10/2024 360P WISE 23.3 277.550 7.12 22/10/2024 P/2012 US27 Siding Spring 16.0 272.361 11.74 25/10/2024 234P LINEAR 19.4 423.783 7.41 26/10/2024 P/2015 HG16 PANSTARRS 19.7 460.506 10.35 12/11/2024 33P Daniel 21.5 335.001 8.26 17/11/2024 305P Skiff 18.8 213.116 10.01 19/11/2024 316P LONEOS-Christensen 21.4 549.490 9.10 29/11/2024 333P LINEAR 14.6 166.136 8.67 14/12/2024 P/2015 R2 PANSTARRS 20.9 367.322 9.51 15/12/2024 276P Vorobjov 19.9 582.843 12.26 24/12/2024 190P Mueller 17.4 303.208 8.71 1/ 1/2025 268P Bernardi 18.8 357.551 9.69 2/ 1/2025 136P Mueller 18.3 443.722 8.59 2/ 1/2025 242P Spahr 16.6 592.064 12.84 18/ 2/2025 P/2011 UA134 Spacewatch-PANSTARR 22.3 310.855 13.27 6/ 3/2025 229P Gibbs 19.5 366.253 7.79 7/ 3/2025 302P Lemmon-PANSTARRS 20.8 492.505 8.84 13/ 3/2025 P/2010 A3 Hill 17.0 242.349 14.98 25/ 3/2025 351P Wiegert-PANSTARRS 20.1 467.420 9.35 21/ 4/2025 341P Gibbs 19.1 375.454 8.90 14/ 6/2025 P/2005 T5 Broughton 18.9 488.306 19.68 28/ 7/2025 195P Hill 18.6 667.977 16.58 5/ 8/2025 P/2003 QX29 NEAT 17.3 632.988 22.75 6/ 8/2025 43P Wolf-Harrington 16.4 363.643 8.96 27/ 8/2025 340P Boattini 19.4 457.413 8.77 16/ 9/2025 248P Gibbs 18.8 324.276 14.67 25/10/2025 P/2016 A2 Christensen 19.2 518.526 10.36 18/11/2025 40P Vaisala 15.4 274.336 11.02 24/11/2025 P/2015 TO19 Lemmon-PANSTARRS 20.1 437.337 9.72 12/ 1/2026 42P Neujmin 20.0 302.251 10.76 18/ 1/2026 P/2005 SB216 LONEOS 17.4 572.172 19.04 18/ 2/2026 303P NEAT 20.1 369.558 11.34 26/ 3/2026 P/2007 C2 Catalina 18.6 553.678 18.49 31/ 5/2026 P/2004 FY140 LINEAR 18.2 609.984 10.86 2/ 7/2026 P/2009 B1 Boattini 19.5 368.039 17.49 13/ 7/2026 63P Wild 17.0 294.526 13.27 25/ 7/2026 295P LINEAR 17.4 304.730 12.22 19/ 8/2026 P/2005 T3 Read 20.8 936.460 20.87 4/ 9/2026 P/2010 U1 Boattini 19.4 732.030 16.61 23/10/2026 P/2015 X3 PANSTARRS 20.9 420.301 11.21 3/11/2026 275P Hermann 21.1 248.380 13.87 28/11/2026 161P Hartley-IRAS 10.8 191.000 21.47 4/12/2026 P/2009 Y2 Kowalski 17.5 356.658 16.76 31/12/2026 P/2007 K2 Gibbs 19.4 344.367 19.58 15/ 1/2027 P/2012 T2 PANSTARRS 20.3 719.729 13.74 21/ 1/2027 P/2004 A1 LONEOS 17.2 822.405 22.46 21/ 5/2027 P/2010 H4 Scotti 20.3 722.589 16.92 12/ 7/2027 P/2010 D2 WISE 24.9 551.670 17.41 6/ 8/2027 P/2012 T3 PANSTARRS 19.4 352.242 15.26 18/ 8/2027 P/2004 V5 LINEAR-Hill 18.1 664.143 22.54 5/10/2027 P/2011 Y2 Boattini 18.8 271.263 15.59 10/10/2027 P/2013 T1 PANSTARRS 20.5 329.779 14.19 1/ 1/2028 P/2011 N1 ASH 17.9 426.324 15.62 18/ 3/2028 P/2014 A2 Hill 19.8 314.469 14.43 7/ 6/2028 P/2010 UH55 Spacewatch 18.6 434.503 17.16 11/10/2028 P/2006 HR30 Siding Spring 12.1 184.363 21.83 19/10/2028 P/2010 C1 Scotti 20.5 787.694 18.93 16/ 1/2029 P/2005 S2 Skiff 19.6 962.522 22.69 14/ 2/2029 P/2011 FR143 Lemmon 19.3 563.523 17.96 17/ 3/2029 P/2012 F2 PANSTARRS 19.0 433.316 15.93 4/ 6/2029 P/2010 H5 Scotti 20.6 907.118 19.16 1/ 7/2029 P/2013 AL76 Catalina 21.5 304.978 16.56 15/12/2029 P/2009 Q5 McNaught 16.9 434.988 20.28 15/12/2030 P/2011 P1 McNaught 19.5 751.341 20.40 17/ 1/2031 P/2009 O3 Hill 18.9 362.961 21.66 18/ 5/2031 55P Tempel-Tuttle 10.4 145.180 33.31 15/ 6/2031 P/2009 T2 La Sagra 18.8 271.158 21.46 21/10/2031 P/2008 Y3 McNaught 18.4 667.531 22.83 20/12/2031 P/2008 O3 Boattini 18.6 374.646 23.57 22/ 5/2034 P/2005 T4 SWAN 13.8 98.314 28.64 29/12/2091 35P Herschel-Rigollet 8.1 112.097 152.64 |
Distance moyenne de la Terre au Soleil = 1 UA = 149.597.870 km
La Période de révolution est donnée par la formule : Période= avec a= demi-grand axe de l'orbite en UA en application de la 3ème loi de Kepler : Les carrés des temps des révolutions sidérales sont proportionnels aux cubes des grands axes de leurs orbites.
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Au fur et à mesure qu'une comète s'approche du Soleil, une partie de la glace composant son noyau se vaporise, entraînant l'apparition d'une enveloppe gazeuse, la chevelure ou "coma". Les gaz et poussières expulsés, repoussés par le vent solaire et la pression du rayonnement solaire, composent alors les queues (de poussières et de plasma) de la comète, en direction opposée au Soleil.
A proximité du périhélie, la comète est à son maximum de dégazage et en conséquence, les queues de poussières et de plasma atteignent leur plus grande longueur.
Quelques comètes, subissant au maximum les effets gravitationnels du Soleil, ne résistent pas et se brisent en plusieurs morceaux au cours de leur approche au plus près du Soleil, devenant ainsi beaucoup plus lumineuses.
C'est à l'approche du Soleil que se forme une queue de poussières, |
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