List of Halley-type comets

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The following is a list of Halley-type comets (HTCs), which are periodic comet with an orbital period between 20 and 200 years, often appearing only once or twice within one's lifetime, the majority come from between the orbits of Saturn and Neptune; Due to the nature of their orbits, their orbits can be perturbed by the giant planets and sent into orbits too far from the Sun to outgas, and vice versa. Minor planets in comet-like orbits similar to HTCs that never come close enough to the Sun to outgas are called Centaurs. HTCs are named after the first discovered member, and the first discovered periodic comet, Halley's Comet, which orbits the Sun in about 75 years, and passing as far as the orbit of Neptune.

This list contains only Halley-type comets which are not numbered yet because they have been observed only once. To find Halley-type comets observed several times, see the list of numbered comets and sort them by orbital period to filter those with 20 years or more.

Comet designation Comet name Eccentricity Semimajor axis (AU) Period (years) Inclination (°) Perihelion distance (AU) Absolute magnitude Last perihelion Next perihelion
C/1625 A1 0.9183 9.05 27.21 28.98 0.7391 1625/01/31
C/1917 F1 Mellish 0.993121 27.6473325 145 32.6828 0.190186 1917/04/11 2062
C/1921 H1 Dubiago 0.86 8 22 22.11 1.1008 1921/05/04 1943/1965/1987/2009/2031
C/1937 D1 Wilk 0.981098 32.7445244 187 26.0205 0.618937 1937/02/21 2124
C/1942 EA Väisälä 0.933639 19.3951116 85.4 37.9961 1.287079 1942/02/15 2027/07/10
C/1984 A1 Bradfield 1 0.9524 28.5 152.3 51.8005 1.35751 9.6 1983/12/27 2136/04/01
C/1989 A3 Bradfield 0.977708 18.853 81.9 83.0672 0.420271 1988/12/05 2070/11/01
C/1991 L3 Levy 0.928811 13.8018 51.28 19.19031 0.982545 8.8 1991/07/08 2042/10/19
P/1997 B1 Kobayashi 0.76076 8.588 25.17 12.3495 2.05455 12.3 1997/03/02 2022/06/06
C/1998 G1 LINEAR 0.8237 12.099 42.08 109.714 2.1333 10.8 1998/11/16 2040/12/15
C/1998 Y1 LINEAR 0.9239 22.956 110 28.1082 1.74699 14 1998/11/21 2108/11/15
C/1999 E1 Li 0.76011 16.341 66.06 46.88108 3.92002 8.3 1998/01/31 2065/02/21
C/1999 G1 LINEAR 0.856 28.1 149 76.55 4.048 8 1998/08/01 2150
C/1999 K4 LINEAR 0.92 20 70 120.8 1.442 18.5 1999/05/16 too uncertain to determine
C/1999 S3 LINEAR 0.89995 18.94 82.43 70.5607 1.894939 4.9 1999/11/09 2081/04/04
C/1999 XS87 LINEAR 0.84057 17.386 72.5 14.8464 2.7718 10.9 1999/08/06 2072/02/04
C/2000 D2 LINEAR 0.867 17.2 72 156.992 2.2975 13.7 2000/03/08 2072
C/2000 G2 LINEAR 0.805 14 52 170.4785 2.716 12.8 2000/02/05 2052
C/2000 S3 LONEOS 0.7723 11.69 39.97 25.164 2.6622 6.4 2000/07/16 2040/07/10
C/2001 M10 NEAT 0.80107 26.657 137.63 28.08349 5.30275 9.4 2001/06/21 2139/02/01
C/2001 OG108 LONEOS 0.9252595 13.3 48.5 80.24505 0.9940479 13.2 2002/03/15 2050/09/13
P/2001 Q6 NEAT 0.82386 7.9946 22.61 56.8553 1.408179 13.3 2001/11/09 2024/06/20
C/2001 W2 BATTeRS 0.94136 17.925 75.89 115.9131 1.051065 12.1 2001/12/23 2077/11/15
C/2002 A1 LINEAR 0.72281 16.992 70.04 14.03393 4.70996 8.6 2001/11/26 2071/12/11
C/2002 A2 LINEAR 0.72482 17.103 70.74 14.0386 4.70659 7.5 2001/12/05 2072/09/01
C/2002 B1 LINEAR 0.77102 9.9183 31.24 51.0214 2.27113 6.3 2002/04/20 2032/06/17
C/2002 CE10 LINEAR 0.791486 9.81595 30.75 145.4587 2.0467593 10.8 2003/06/22 2034/03/23
C/2002 K4 NEAT 0.84232 17.532 73.41 94.0632 2.76453 11.4 2002/07/12 2075/12/01
P/2002 T6 NEATLINEAR 0.557348 7.6519 21.17 11.00927 3.387103 5.9 2003/06/27 2024/08/28
C/2003 E1 NEAT 0.76359 13.7263 50.86 33.53785 3.245004 10.6 2004/02/13 2054/12/24
C/2003 F1 LINEAR 0.80605 20.664 93.93 70.2216 4.007806 8.3 2003/06/28 2097/06/02
C/2003 R1 LINEAR 0.89331 19.7 87.44 149.19563 2.10188 12.7 2003/06/29 2090/12/15
C/2003 U1 LINEAR 0.9216 22.9 109.6 164.4745 1.79572 15.2 2003/11/03 2113
C/2003 W1 LINEAR 0.93429 25.15 126.1 78.0756 1.65241 13.5 2003/11/09 2130
P/2004 V5-A LINEAR-Hill 0.445217 7.95059 22.42 19.358136 4.410853 8.8 2005/02/28 2027/07/31
P/2004 A1 LONEOS 0.30841 7.89853 22.2 10.57568 5.462544 10 2004/08/26 2026/11/07
C/2004 C1 Larsen 0.6231 11.566 39.33 28.918 4.3594 10 2003/03/19 2042/09/01
P/2004 DO29 SpacewatchLINEAR 0.45151 7.4655 20.4 14.5358 4.09475 10.3 2004/10/11 2025/03/06
P/2004 V5-B LINEAR-Hill 0.445233 7.95092 22.42 19.35822 4.41091 9.2 2005/03/01 2027/08/02
C/2005 N5 Catalina (CSS) 0.94327 28.687 153.65 21.37879 1.6274 12.9 2005/08/22 2159/01/01
C/2005 O2 Christensen 0.85939 23.707 115.43 148.89204 3.33358 5.2 2005/09/08 2121/02/15
P/2005 S2 Skiff 0.1967 7.965 22.48 3.141 6.398 7.9 2006/06/30 2028/12/22
P/2005 T3 Read 0.174 7.509 20.58 6.26 6.202 9.2 2006/01/13 2026/08/15
P/2005 T4 SWAN 0.93 9.3 28.4 160.0362 0.649399 15.4 2005/10/10 2034
C/2005 W2 Christensen 0.82446 18.979 82.68 11.26403 3.33162 10.8 2006/03/27 2096/12/01
C/2006 F2 Christensen 0.65138 12.324 43.27 20.511 4.2965 10.6 2006/05/30 2049/09/06
P/2006 HR30 Siding Spring 0.8431184 7.81754 21.86 31.884499 1.2264277 11.7 2007/01/02 2028/11/12
C/2006 U7 Gibbs 0.6309 11.99 41.51 57.762 4.425 11.6 2007/03/28 2048/10/01
C/2007 S2 Lemmon 0.557056 12.5477 44.45 16.86305 5.557931 9 2008/09/14 2053/02/25
C/2008 E1 Catalina (CSS) 0.54815 10.687 34.94 35.03769 4.82891 9.1 2008/08/11 2043/07/31
P/2008 O3 Boattini 0.6949 8.186 23.42 32.2699 2.4973 5.1 2008/06/03 2031/11/03
C/2008 R3 LINEAR 0.89641 18.428 79.11 43.23793 1.909035 13.5 2008/11/22 2088/01/01
P/2008 Y3 McNaught 0.44766 8.0281 22.75 38.81318 4.434241 8.7 2009/01/11 2031/10/12
P/2009 O3 Hill 0.68688 7.8244 21.89 16.2176 2.44999 12 2009/05/18 2031/04/08
P/2009 Q5 McNaught 0.609061 7.4654 20.4 40.9048 2.91851 10.5 2009/09/08 2030/02/02
P/2009 T2 La Sagra 0.768991 7.596 20.94 28.10639 1.75475 14.2 2010/01/12 2030/12/21
P/2010 E2 Jarnac 0.72237 8.6402 25.4 15.437 2.39874 14.4 2010/04/07 2035/08/31
C/2010 E5 Scotti 0.84274 24.73 122.96 18.9102 3.8884 6.1 2009/11/21 2132/11/01
P/2010 J3 McMillan 0.72682 8.9871 26.94 13.25507 2.45511 11.6 2010/08/23 2037/08/01
P/2010 JC81 WISE 0.77735 8.13307 23.19 38.69025 1.8108311 10.3 2011/04/26 2034/07/04
C/2010 L5 WISE 0.904 8.2 23.6 147.052 0.7909 17.4 2010/04/23 2033
C/2011 J3 LINEAR 0.9258 19.56 86.5 114.7124 1.451 13.1 2011/01/24 2097
P/2011 JB15 SpacewatchBoattini 0.31874 7.3668 20 19.14127 5.01871 5.5 2012/01/21 2032/01/21
C/2011 L1 McNaught 0.79678 11.034 36.66 65.512 2.24237 10.6 2010/12/18 2047/08/15
P/2011 P1 McNaught 0.3598 7.741 21.54 6.1741 4.9556 8.2 2010/07/22 2032/02/04
C/2011 P2 PANSTARRS 0.36982 9.7562 30.47 8.98964 6.1481 6.7 2010/09/13 2041/03/04
P/2011 S1 Gibbs 0.20305 8.6545 25.46 2.6792 6.8972 5.5 2014/08/20 2040/02/04
C/2011 S2 Kowalski 0.9316 16.304 65.83 17.57253 1.115118 14.8 2011/10/26 2077/08/25
C/2011 Y3 Boattini 0.705 11.85 40.82 26.517 3.4978 11.7 2011/08/22 2052/06/17
C/2012 BJ98 Lemmon[1] 0.87365 17.068 70.52 2.6369 2.156577 8.1 2012/09/20 2083/03/29
C/2012 H2 McNaught 0.8936 16.14 64.9 92.8355 1.71678 15.7 2012/05/03 2077
C/2012 Q1 Kowalski 0.63722 26.138 133.63 45.181 9.48222 4.7 2012/02/09 2145/10/01
C/2012 T6 Kowalski 0.87634 14.354 54.38 33.2755 1.77509 15.7 2012/08/26 2067/01/15
C/2012 X2 PANSTARRS 0.77052 20.69 94.12 34.12389 4.74816 9.6 2013/03/31 2107/05/14
A/2012 CG Lemmon 0.499315 28.9980 156.16 14.58112 14.51886 9.0 2001/06/29 2157/08/26
P/2012 C3 PANSTARRS 0.6264 9.7 30.2 9.19 3.625 13.5 2011/10/05 2042
P/2012 NJ La Sagra 0.848062 8.5027 24.79 84.37546 1.2918901 13.1 2012/06/13 2037/03/28
C/2012 Y3 McNaught 0.93993 29.38 159.3 73.2318 1.76482 10.4 2012/08/25 2172
C/2013 C2 Tenagra 0.4293 16.001 64.01 21.34426 9.1321 4.4 2015/08/28 2080/09/01
C/2013 D1 Holvorcem 0.78088 11.227 37.62 10.09356 2.46013 13.5 2013/04/13 2050/11/25
P/2013 N3 PANSTARRS 0.5924 7.431 20.26 2.17041 3.0289 6.6 2014/02/11 2034/05/17
P/2013 P1 PANSTARRS 0.6053 8.588 25.17 18.702 3.3902 11.6 2013/02/26 2038/04/29
C/2013 P4 PANSTARRS 0.59636 14.783 56.84 4.26425 5.96703 5.1 2014/08/12 2071/06/15
C/2013 U1 Catalina (CSS) 0.7971 11.92 41.17 23.9415 2.4188 13.9 2013/11/18 2055/01/01
C/2013 V3 Nevsky 0.89097 12.718 45.36 32.1345 1.386693 15.2 2013/10/29 2059/03/09
C/2013 W2 PANSTARRS 0.561 10.13 32.23 4.5436 4.448 5.8 2015/01/08 2047/03/15
C/2014 F3 SheppardTrujillo 0.65 16.3 66 6.48 5.7 6.1 2021/04/17 2087
C/2014 HU195 Valdes-TOTAS 0.76580 21.867 102.25 5.82227 5.12113 14.6 2015/05/18 2117/08/14
C/2014 J1 Catalina (CSS) 0.802 8.64 25.4 159.696 1.7085 16.8 2014/06/20 2039
P/2014 L3 Hill 0.77309 8.1706 23.36 6.264 1.85396 13.7 2014/06/28 2037/11/06
P/2014 O3 PANSTARRS 0.3847 7.544 20.72 7.81 4.642 10.4 2014/04/16 2035/01/04
C/2014 Q3 Borisov 0.94207 28.436 151.64 89.94888 1.647408 8.8 2014/11/19 2166/07/10
C/2014 TG64 Catalina (CSS) 0.7824 14.89 22.283 3.2391 3.24 6.4 2014/05/26 2072
C/2014 W7 Christensen 0.869 11.3 38 98.314 1.4881 16.3 2014/12/31 2052
C/2014 W9 PANSTARRS 0.8577 11.16 37.28 10.6302 1.5874 15.5 2015/02/15 2052/04/01
C/2014 W11 PANSTARRS 0.650255 9.7980 30.67 12.70679 3.426805 8.8 2015/06/17 2036/04/16
C/2015 A1 PANSTARRS 0.900816 20.119 90.24 80.36576 1.995505 6.9 2015/03/13 2105/06/09
P/2015 A3 PANSTARRS 0.85 7.6 21 172.51 1.154 20.2 2015/02/22 2036
P/2015 B1 PANSTARRS 0.38250 9.6772 30.10 18.027 5.97567 8.7 2015/09/19 2045/10/26
P/2015 B4 Lemmon 0.56894 8.7121 25.72 1.74262 3.75540 11.7 2015/02/17 2030/12/04
C/2015 D2 PANSTARRS 0.56826 12.985 46.79 31.8339 5.6060 6.3 2013/09/27 2060/07/13
C/2015 D5 Kowalski 0.4996 9.145 27.66 20.3990 4.576 6.0 2014/04/16 2041/12/12
C/2015 F5 SWAN-XingMing 0.97764 15.47 60.9 149.2590 0.345995 17.6 2015/03/28 2075/02/01
C/2015 GX PANSTARRS 0.878198 16.1883 65.13 90.25454 1.971753 14.4 2015/08/26 2080/10/09
C/2015 H1 Bressi 0.94078 32.53 185.5 140.65558 1.92636 6.6 2015/03/28 2200/10/07
C/2015 T5 Sheppard-Tholen 0.6661 27.97 147.9 11.0483 9.3383 7.7 2016/01/24 2164
C/2015 V4 PANSTARRS 0.70567 18.550 79.89 60.7513 5.45972 8.7 2016/08/27 2096/07/19
C/2015 X2 PANSTARRS 0.8791 15.75 62.5 72.458 1.90456 16.1 2015/12/20
C/2015 X4 Elenin 0.812807 18.1345 77.23 29.50491 3.39466 10.1 2015/11/03 2093/02/14
C/2015 YG1 NEOWISE 0.87924 17.169 71.14 57.3360 2.07341 12.3 2015/09/28 2086/11/17
P/2016 A3 PANSTARRS 0.3778 7.6979 21.36 8.5929 4.7895 5.4 2017/04/13 2038/08/22
C/2016 Q4 Kowalski 0.5781 16.79 68.8 7.2567 7.084 7.0 2018/01/28 2086
C/2016 S1 PANSTARRS 0.70887 8.285 23.85 94.6898 2.41193 7.5 2017/03/16 2041/01/20
A/2016 TP93 PANSTARRS 0.56 7.5 20.6 138.31 3.291 15.7 2016/10/05 2038
A/2016 VY17 Lemmon 0.852 11.3 38 148.42 1.666 15.8 2017/07/02 2055
P/2016 WM48 Lemmon 0.7867 8.1954 23.46 117.5476 1.7480 16.8 2017/02/26 2040
C/2017 C1 NEOWISE 0.9263697 20.7832 92.08 65.73154 1.50172 2017/01/19 2109
C/2017 K4 ATLAS 0.90571 28.0883 148.87 16.67822 2.64824 7.2 2018/01/08 2167
C/2017 S2 PANSTARRS 0.82406 20.5400 93.09 12.67723 3.613 13.2 2017/08/28 2110

See also[edit]

References[edit]

  1. ^ Yoshia, Seiichi. "C/2012 BJ98 (Lemmon)". aerith.net. Retrieved 23 July 2014.