Comets Waiting for First Observation

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Updated on August 29, 2026

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

Bright periodic comets not yet observed in this return. P/2013 T2 ( Schwartz ) was observed on 2026 June 27 at 21.1 mag at Pan-STARRS 1 telescope (Haleakala), but not officially announced yet. P/2010 H2 ( Vales ) was fainter than 22 mag on 2025 Jan. 27 (Erwin Schwab). P/2009 Y2 ( Kowalski ) was fainter than 19.5 mag on 2026 July 6 (Jean-Francois Soulier). 36P/Whipple was fainter than 20 mag on 2026 July 9 (Jean-Francois Soulier). 391P/Kowalski was fainter than 20 mag on 2026 June 20 (Jean-Francois Soulier). 2026 September 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) 252P/LINEAR 09 10 +09.6 15.9 4:13 (265, 10) 4:42 (255, 5) 373P/Rinner 07 42 +13.4 18.1 4:13 (274, 30) 4:42 (238, 19) P/2009 Y2 (Kowalski) 04 48 +41.2 18.6 4:13 (242, 74) 4:42 (189, 13) P/2004 V5 (LINEAR-Hill) 07 11 +35.7 18.6 4:13 (253, 46) 4:42 (217, 7) 407P/PanSTARRS-Fuls 12 17 +01.6 18.7 19:39 ( 97, -8) 19:11 ( 89, -4) 69P/Taylor 06 18 +10.5 18.8 4:13 (293, 45) 4:42 (222, 34) P/2011 N1 (ASH) 21 16 -55.2 18.9 21:55 ( 0, 0) 21:55 ( 0, 70) P/2020 G1 (Pimentel) 19 17 +04.8 19.0 19:56 ( 0, 60) 19:56 (180, 50) P/2009 B1 (Boattini) 07 37 +30.4 19.4 4:13 (257, 39) 4:42 (225, 7) P/2011 V1 (Boattini) 02 46 +10.8 19.7 3:28 ( 0, 66) 3:28 (180, 44) 163P/NEAT 06 04 +15.4 19.9 4:13 (290, 51) 4:42 (216, 32) P/2010 D2 (WISE) 23 02 +68.6 20.0 23:39 (180, 56) 23:39 (180,-14) 2000 XO8 06 32 +24.1 20.0 4:13 (273, 50) 4:42 (217, 21) P/2017 S8 (PanSTARRS) 23 29 +14.4 20.1 0:11 ( 0, 70) 0:11 (180, 40) P/2015 X3 (PanSTARRS) 02 37 -16.7 20.1 3:19 ( 0, 38) 3:19 (180, 72) P/2007 K2 (Gibbs) 09 53 +08.4 20.2 4:13 (260, 0) 4:42 (262, -3) P/2017 D1 (Fuls) 05 06 +12.5 20.2 4:13 (311, 59) 4:42 (201, 40) 186P/Garradd 09 05 +26.8 20.2 4:13 (251, 20) 4:42 (241, -5) 247P/LINEAR 07 10 +26.1 20.3 4:13 (265, 43) 4:42 (223, 14) 348P/PanSTARRS 22 42 +07.8 20.4 23:20 ( 0, 63) 23:20 (180, 47) P/1996 R2 (Lagerkvist) 03 43 +19.5 20.5 4:13 (350, 74) 4:24 (180, 35) 357P/Hill 20 27 -27.4 20.5 21:06 ( 0, 28) 21:06 (180, 82) P/2012 T3 (PanSTARRS) 16 54 -19.7 20.5 19:39 ( 33, 28) 19:11 (119, 64) 231P/LINEAR-NEAT 08 33 +15.6 20.5 4:13 (265, 21) 4:42 (245, 8) P/2019 A4 (PanSTARRS) 03 50 +02.6 20.5 4:13 (352, 57) 4:31 (180, 52) P/2013 T2 (Schwartz) 03 48 +26.8 20.6 4:13 (336, 81) 4:29 (180, 28) 275P/Hermann 10 13 +19.1 20.7 4:13 (249, 3) 4:42 (256,-13) 82P/Gehrels 3 07 24 +21.4 20.7 4:13 (269, 38) 4:42 (229, 16) P/2017 U3 (PanSTARRS) 22 17 -07.4 20.8 22:55 ( 0, 48) 22:55 (180, 62) P/2019 B2 (Groeller) 09 25 +05.7 20.8 4:13 (266, 5) 4:42 (260, 4) 296P/Garradd 11 08 -14.0 20.8 4:13 (268,-28) 4:42 (291, -5) 156P/Russell-LINEAR 17 28 -41.8 20.8 19:39 ( 17, 10) 19:11 ( 57, 76) 2015 VA108 01 40 +23.0 20.8 2:22 ( 0, 78) 2:22 (180, 32) P/2011 P1 (McNaught) 15 19 -23.0 20.8 19:39 ( 50, 12) 19:11 ( 93, 47) P/2022 BV9 (Lemmon) 13 06 -15.7 20.9 19:39 ( 76, -8) 19:11 ( 82, 16) 340P/Boattini 03 20 +20.8 21.0 4:02 ( 0, 76) 4:02 (180, 34) (944) Hidalgo 15 55 -58.4 21.0 19:39 ( 23,-11) 19:11 ( 35, 55) 460P/PanSTARRS 10 56 +03.1 21.0 4:13 (255,-15) 4:42 (276,-13) 187P/LINEAR 11 47 +12.2 21.0 19:39 (110, -7) 19:11 ( 94,-16) 469P/PanSTARRS 17 22 -02.0 21.0 19:39 ( 37, 47) 19:11 (150, 53) 312P/NEAT 17 28 -09.1 21.0 19:39 ( 30, 41) 19:11 (147, 60) P/2023 B3 (PanSTARRS) 15 50 -11.2 21.1 19:39 ( 53, 26) 19:11 (113, 46) P/2010 C1 (Scotti) 06 07 +15.7 21.1 4:13 (289, 50) 4:42 (216, 31) 359P/LONEOS 18 04 -15.6 21.2 19:39 ( 17, 38) 19:11 (160, 70) 59P/Kearns-Kwee 21 27 -11.9 21.2 22:06 ( 0, 43) 22:06 (180, 67) P/2005 T3 (Read) 02 44 +17.0 21.2 3:26 ( 0, 72) 3:26 (180, 38) 397P/Lemmon 17 03 -34.2 21.2 19:39 ( 25, 16) 19:11 ( 86, 72) P/2018 H2 (PanSTARRS) 09 07 +21.3 21.2 4:13 (256, 17) 4:42 (245, -2) (65803) Didymos 16 36 -24.8 21.3 19:39 ( 34, 21) 19:11 (104, 63) P/2010 H4 (Scotti) 12 50 -04.4 21.3 19:39 ( 88, -5) 19:11 ( 89, 6) 391P/Kowalski 15 28 -00.7 21.3 19:39 ( 66, 29) 19:11 (118, 35) 246P/NEAT 08 35 +29.2 21.5 4:13 (252, 27) 4:42 (235, -1) 415P/Tenagra 01 10 -13.0 21.5 1:52 ( 0, 42) 1:52 (180, 68) P/2012 O2 (McNaught) 03 07 -19.8 21.5 3:49 ( 0, 35) 3:49 (180, 75) 257P/Catalina 13 23 -07.7 21.5 19:39 ( 80, 0) 19:11 ( 91, 15) P/2010 H5 (Scotti) 09 40 +26.4 21.5 4:13 (247, 13) 4:42 (245,-11) 2010 RH69 12 28 -03.1 21.5 19:39 ( 92, -8) 19:11 ( 87, 1) P/2021 A5 (PanSTARRS) 06 30 +40.1 21.6 4:13 (248, 55) 4:42 (208, 7) 141P/Machholz 2 10 20 +00.2 21.6 4:13 (263,-10) 4:42 (273, -4) 282P/(323137) 2003 BM80 04 46 +27.2 21.6 4:13 (291, 72) 4:42 (191, 27) 118P/Shoemaker-Levy 4 19 02 -17.6 21.6 19:41 ( 0, 37) 19:41 (180, 73) 17P/Holmes 13 57 -29.6 21.7 19:39 ( 58, -6) 19:11 ( 74, 33) P/2016 P1 (PanSTARRS) 11 14 -06.4 21.7 4:13 (260,-25) 4:42 (286,-11) P/2012 B1 (PanSTARRS) 05 36 +28.2 21.8 4:13 (276, 63) 4:42 (203, 23) 92P/Sanguin 15 23 -02.2 21.8 19:39 ( 65, 27) 19:11 (116, 35) 412P/WISE 12 54 -09.1 21.9 19:39 ( 83, -6) 19:11 ( 85, 10) P/2019 X2 (PanSTARRS) 06 51 +22.4 21.9 4:13 (273, 45) 4:42 (222, 20) 2019 OE31 13 58 -11.6 21.9 19:39 ( 72, 5) 19:11 ( 92, 24) 230P/LINEAR 17 01 -17.6 21.9 19:39 ( 33, 30) 19:11 (125, 63) (551023) 2012 UQ192 02 32 +01.3 22.0 3:14 ( 0, 56) 3:14 (180, 54) 176P/(118401) LINEAR 15 06 -17.7 22.2 19:39 ( 56, 14) 19:11 ( 97, 41) 298P/Christensen 05 60 +25.8 22.2 4:13 (276, 57) 4:42 (209, 23) 264P/Larsen 10 15 -07.8 22.2 4:13 (270,-13) 4:42 (279, 1) 336P/McNaught 09 42 +07.7 22.3 4:13 (262, 2) 4:42 (261, -1) 36P/Whipple 16 34 -12.2 22.3 19:39 ( 43, 32) 19:11 (123, 55) P/2013 W1 (PanSTARRS) 03 06 +10.6 22.3 3:48 ( 0, 66) 3:48 (180, 44) P/2017 FL36 (PanSTARRS) 09 18 +17.4 22.3 4:13 (258, 13) 4:42 (250, -2) P/2010 H2 (Vales) 18 04 -34.1 22.4 19:39 ( 12, 20) 19:11 ( 97, 84) 304P/Ory 09 49 +15.1 22.8 4:13 (255, 5) 4:42 (256, -6) 2008 BJ22 20 44 -14.1 22.9 21:23 ( 0, 41) 21:23 (180, 69) 332P/Ikeya-Murakami 07 46 +29.1 23.0 4:13 (257, 37) 4:42 (227, 7) (399457) 2002 PD43 21 02 -06.9 23.0 21:40 ( 0, 48) 21:40 (180, 62) 147P/Kushida-Muramatsu 14 03 -10.9 23.0 19:39 ( 72, 6) 19:11 ( 94, 25) P/2004 FY140 (LINEAR) 13 59 -14.0 23.0 19:39 ( 70, 4) 19:11 ( 90, 26) P/1999 XN120 (Catalina) 09 29 +12.9 23.1 4:13 (260, 8) 4:42 (255, -1) P/2019 U4 (PanSTARRS) 06 55 +13.8 23.3 4:13 (282, 40) 4:42 (228, 26) 316P/LONEOS-Christensen 10 59 -02.0 23.5 4:13 (259,-19) 4:42 (280,-11) 168P/Hergenrother 07 50 +39.6 24.4 4:13 (245, 40) 4:42 (221, -1) P/1999 J6 (SOHO) 14 48 -18.9 26.9 19:39 ( 58, 10) 19:11 ( 93, 39)