Comets Waiting for First Observation

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Updated on May 4, 2021

Please see also the Weekly Information about Bright Comets and Comet Catalog.

Bright periodic comets not yet observed in this return. 102P/Shoemaker 1 was observed on 2020 July 18 at 16.9 mag at Blue Mountains Observatory, Leura, but not officially confirmed yet. 142P/Ge-Wang was observed on 2020 July 18 at 18.7 mag at Blue Mountains Observatory, Leura, but not officially confirmed yet. 252P/LINEAR was observed on 2021 Jan. 13 at 23.1 mag at Lowell Discovery Telescope, but not officially confirmed yet. 283P/Spacewatch was observed on 2020 Dec. 6 at 23.1 mag by H. Nohara, but not officially confirmed yet. 332P/Ikeya-Murakami was observed on 2020 Oct. 12 at 24.5 mag at Lowell Discovery Telescope, but not officially confirmed yet. 135P/Shoemaker-Levy 8 was fainter than 20.5 mag on 2020 Feb. 14 (Hidetaka Sato). 142P/Ge-Wang was fainter than 19 mag on 2020 May 24 (Jean-Francois Soulier). P/2005 L1 ( McNaught ) was fainter than 21.5 mag on 2021 Mar. 11 (Erwin Schwab). P/2008 CL94 ( Lemmon ) was fainter than 21.0 mag on 2017 Nov. 8 (Erwin Schwab). P/2010 TO20 ( LINEAR-Grauer ) was fainter than 22.0 mag on 2017 Jan. 27 (Erwin Schwab). P/2012 TK8 ( Tenagra ) was fainter than 21.5 mag on 2020 Aug. 17 (Erwin Schwab). P/2013 YG46 ( Spacewatch ) was fainter than 21.5 mag on 2020 Oct. 28 (Erwin Schwab). P/2015 X6 ( PanSTARRS ) was fainter than 21.5 mag on 2021 Jan. 15 (Erwin Schwab). P/2016 G1 ( PanSTARRS ) was fainter than 22 mag on 2020 Feb. 27 (Erwin Schwab). 2021 May 11 at lat. 35 deg in the Northern/Sothern Hemisphere: Lat. 35 N deg Lat. 35 S deg Comet R.A. Decl. m1 Best Time(A, h) Best Time(A, h) 201P/LONEOS 03 01 +18.6 15.6 3:23 (233,-16) 5:17 (258,-16) 106P/Schuster 00 53 -08.6 17.6 3:23 (275, -8) 5:17 (263, 25) P/2014 W12 (Gibbs) 23 06 -03.6 17.7 3:23 (287, 16) 5:17 (237, 42) 193P/LINEAR-NEAT 22 24 -15.6 18.4 3:23 (303, 16) 5:17 (239, 58) P/2006 S4 (Christensen) 21 56 -58.4 18.5 3:23 (336,-12) 5:17 (335, 63) 119P/Parker-Hartley 22 37 -13.2 18.8 3:23 (299, 16) 5:17 (240, 54) 108P/Ciffreo 00 32 -05.4 18.8 3:23 (275, -2) 5:17 (256, 27) P/2009 U4 (McNaught) 01 31 +04.0 19.2 3:23 (259, -9) 5:17 (258, 10) 2017 MB1 03 22 +15.3 19.2 20:30 (125,-18) 18:35 ( 99,-14) P/2016 P1 (PanSTARRS) 12 27 -47.3 19.4 21:09 ( 0, 8) 21:09 ( 0, 78) 297P/Beshore 18 54 -19.2 19.5 3:23 (355, 36) 3:40 (180, 74) 19P/Borrelly 22 44 -34.6 19.6 3:23 (314, 0) 5:17 (278, 63) 179P/Jedicke 01 05 -10.2 19.6 3:23 (274,-11) 5:17 (266, 23) 61P/Shajn-Schaldach 18 12 -16.0 19.6 2:58 ( 0, 39) 2:58 (180, 71) P/2005 W3 (Kowalski) 01 36 +12.6 19.8 3:23 (251, -4) 5:17 (252, 4) P/2008 CL94 (Lemmon) 06 23 +30.3 20.1 20:30 (111, 24) 18:35 (136, 8) 274P/Tombaugh-Tenagra 02 47 +07.4 20.4 3:23 (244,-21) 5:17 (266, -7) P/2011 W1 (PanSTARRS) 02 32 +12.4 20.4 3:23 (242,-15) 5:17 (260, -7) P/2012 TK8 (Tenagra) 01 40 +15.6 20.5 3:23 (248, -3) 5:17 (250, 1) 132P/Helin-Roman-Alu 2 22 19 -06.6 20.5 3:23 (297, 23) 5:17 (227, 52) 102P/Shoemaker 1 02 17 +30.4 20.5 3:23 (231, 0) 5:17 (243,-14) 252P/LINEAR 05 35 +16.7 20.6 20:30 (105, 7) 18:35 (119, 10) P/2012 G1 (PanSTARRS) 17 16 -32.6 20.7 2:03 ( 0, 22) 2:03 (180, 88) 298P/Christensen 14 58 -15.8 20.8 23:39 ( 0, 39) 23:39 (180, 71) P/2005 L1 (McNaught) 17 40 -13.8 21.0 2:25 ( 0, 41) 2:25 (180, 69) 142P/Ge-Wang 00 20 +03.4 21.0 3:23 (270, 6) 5:17 (247, 24) 265P/LINEAR 03 59 +30.1 21.0 20:30 (129, -2) 18:35 (116,-15) 77P/Longmore 04 22 +39.4 21.1 20:30 (133, 8) 18:35 (127,-16) 195P/Hill 00 22 +31.3 21.2 3:23 (245, 20) 5:17 (226, 4) P/2004 V3 (Siding Spring) 12 10 -41.8 21.3 20:52 ( 0, 13) 20:52 ( 0, 83) 135P/Shoemaker-Levy 8 09 34 +09.1 21.3 20:30 ( 57, 50) 18:35 (174, 46) P/2007 S1 (Zhao) 19 38 -16.8 21.3 3:23 (342, 36) 4:24 (180, 72) 302P/Lemmon-PanSTARRS 10 33 +13.9 21.3 20:30 ( 43, 63) 19:16 (180, 41) 281P/MOSS 02 34 +12.0 21.3 3:23 (243,-16) 5:17 (260, -7) 75D/Kohoutek 06 20 +21.3 21.3 20:30 (103, 19) 18:35 (130, 15) 118P/Shoemaker-Levy 4 22 25 -09.5 21.4 3:23 (298, 20) 5:17 (232, 54) (431760) 2008 HE 15 55 -14.5 21.4 0:41 ( 0, 40) 0:41 (180, 70) P/2012 T2 (PanSTARRS) 15 07 -10.7 21.4 23:49 ( 0, 44) 23:49 (180, 66) 83D/Russell 1 11 16 -09.9 21.4 20:30 ( 11, 44) 19:59 (180, 65) P/2007 R4 (Garradd) 21 18 -26.3 21.5 3:23 (323, 18) 5:17 (232, 77) P/1997 B1 (Kobayashi) 03 35 +29.3 21.5 20:30 (133, -6) 18:35 (113,-19) D/1977 C1 (Skiff-Kosai) 05 07 +23.2 21.6 20:30 (115, 6) 18:35 (120, 1) 113P/Spitaler 22 31 -08.1 21.7 3:23 (296, 20) 5:17 (232, 52) P/2019 A4 (PanSTARRS) 21 50 -14.3 21.7 3:23 (308, 23) 5:17 (225, 63) 111P/Helin-Roman-Crockett 05 09 +22.7 21.7 20:30 (114, 6) 18:35 (120, 2) 170P/Christensen 17 19 -11.1 21.7 2:05 ( 0, 44) 2:05 (180, 66) 97P/Metcalf-Brewington 23 52 +04.5 21.7 3:23 (273, 12) 5:17 (240, 29) 283P/Spacewatch 07 53 +16.1 21.8 20:30 ( 86, 35) 18:35 (146, 32) 107P/(4015) Wilson-Harrington 12 54 -09.3 21.8 21:36 ( 0, 46) 21:36 (180, 64) P/2016 BA14 (PanSTARRS) 06 11 +13.3 21.9 20:30 ( 98, 13) 18:35 (123, 19) P/2010 TO20 (LINEAR-Grauer) 18 18 -25.4 21.9 3:04 ( 0, 30) 3:04 (180, 80) P/2014 A3 (PanSTARRS) 23 28 +08.7 22.0 3:23 (273, 19) 5:17 (232, 30) 104P/Kowal 2 22 07 -05.7 22.1 3:23 (298, 26) 5:17 (222, 53) P/2015 X6 (PanSTARRS) 07 51 +23.1 22.1 20:30 ( 93, 38) 18:35 (149, 25) 332P/Ikeya-Murakami 05 31 +29.9 22.1 20:30 (117, 14) 18:35 (128, 1) P/2012 S2 (La Sagra) 19 49 -28.9 22.3 3:23 (343, 24) 4:34 (180, 84) P/2014 U4 (PanSTARRS) 02 36 +17.2 22.4 3:23 (238,-12) 5:17 (256,-11) P/2016 G1 (PanSTARRS) 23 40 +05.4 22.7 3:23 (274, 15) 5:17 (237, 30) 324P/La Sagra 22 53 +10.5 22.9 3:23 (276, 27) 5:17 (223, 34) P/2013 W1 (PanSTARRS) 14 51 -09.0 23.0 23:33 ( 0, 46) 23:33 (180, 64) P/2007 Q2 (Gilmore) 02 54 +10.8 23.1 3:23 (240,-20) 5:17 (264,-11) P/2009 WX51 (Catalina) 20 06 -31.8 23.3 3:23 (340, 20) 4:51 (180, 87) 206P/Barnard-Boattini 04 05 +04.7 23.6 20:30 (109,-17) 18:35 ( 96, 0) P/2014 MG4 (Spacewatch-PanSTARRS) 07 28 +23.8 23.8 20:30 ( 97, 34) 18:35 (145, 22) P/2013 YG46 (Spacewatch) 09 16 +24.0 23.9 20:30 ( 81, 56) 18:35 (171, 31) P/2008 QP20 (LINEAR-Hill) 22 17 -12.4 24.6 3:23 (302, 20) 5:17 (233, 57) 354P/LINEAR 13 10 -16.4 24.8 21:52 ( 0, 39) 21:52 (180, 71) 320P/McNaught 02 23 +17.5 25.7 3:23 (240,-10) 5:17 (254, -8) P/1999 J6=P/2004 V9=P/2010 H3 (SOHO)20 15 -26.6 27.8 3:23 (336, 24) 5:01 (180, 81)