Comets Waiting for First Observation

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Updated on September 22, 2017

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

Bright periodic comets not yet observed in this return. P/2004 FY140 ( LINEAR ) was fainter than 22 mag on 2015 June 15 (Erwin Schwab, Marco Micheli). 82P/Gehrels 3 was fainter than 20 mag on 2016 Nov. 8 (Jean-Francois Soulier). P/1999 XN120 ( Catalina ) was fainter than 21.5 mag on 2016 Nov. 28 (Erwin Schwab), fainter than 21.2 mag on 2016 Dec. 4 (Jean-Gabriel Bosch). P/2010 TO20 ( LINEAR-Grauer ) was fainter than 22.0 mag on 2017 Jan. 27 (Erwin Schwab). P/2003 L1 ( Scotti ) was fainter than 21.5 mag on 2017 Mar. 24 (Erwin Schwab). P/2010 H2 ( Vales ) was fainter than 21.5 mag on 2017 Mar. 28 (Erwin Schwab). P/2011 CR42 ( Catalina ) was fainter than 19 mag on 2017 Apr. 28 (Jean-Francois Soulier). P/2006 F1 ( Kowalski ) was fainter than 20 mag on 2017 May 26 (Jean-Francois Soulier). P/2008 O2 ( McNaught ) was fainter than 21.5 mag on 2017 June 22 (Erwin Schwab). P/1998 VS24 ( LINEAR ) was fainter than 21.5 mag on 2017 Aug. 20 (Erwin Schwab). 54P/de Vico-Swift-NEAT was fainter than 21.0 mag on 2017 Aug. 28 (Hidetaka Sato). 2017 September 20 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) 103P/Hartley 2 10 13 +01.1 16.2 4:21 (270, 1) 4:28 (268, 2) P/2008 O2 (McNaught) 19 10 -27.3 18.4 19:24 ( 3, 28) 19:18 (170, 82) P/2006 F1 (Kowalski) 18 25 -17.2 18.5 19:24 ( 17, 36) 19:18 (144, 69) P/1998 VS24 (LINEAR) 02 10 +08.2 18.8 2:16 ( 0, 63) 2:16 (180, 47) P/1999 XN120 (Catalina) 08 08 +20.2 18.8 4:21 (270, 37) 4:28 (233, 13) P/2004 FY140 (LINEAR) 19 22 -23.2 19.5 19:24 ( 0, 32) 19:24 (180, 78) 59P/Kearns-Kwee 23 03 +02.6 19.8 23:04 ( 0, 58) 23:04 (180, 52) P/2008 CL94 (Lemmon) 00 37 -00.9 19.9 0:43 ( 0, 54) 0:43 (180, 56) 250P/Larson 06 33 +23.2 20.0 4:21 (282, 58) 4:28 (213, 24) 37P/Forbes 12 14 -07.3 20.0 19:24 ( 93,-18) 19:18 ( 75, -8) 253P/PanSTARRS 18 38 -20.6 20.1 19:24 ( 12, 33) 19:18 (147, 73) P/2013 J4 (PanSTARRS) 12 49 -02.0 20.1 19:24 ( 93, -8) 19:18 ( 84, -4) P/2002 EJ57 (LINEAR) 05 53 +28.5 20.4 4:21 (281, 68) 4:28 (201, 23) P/2009 SK280 (Spacew.-Hill) 17 35 -38.4 20.5 19:24 ( 21, 13) 19:18 ( 73, 70) 54P/de Vico-Swift-NEAT 05 00 +28.6 20.5 4:21 (301, 79) 4:28 (189, 26) 82P/Gehrels 3 05 18 +23.0 20.7 4:21 (308, 72) 4:28 (195, 31) P/2011 CR42 (Catalina) 11 20 +10.9 20.7 4:21 (252, -6) 4:28 (269,-18) 263P/Gibbs 10 18 +13.8 20.7 4:21 (258, 8) 4:28 (258, -7) 228P/LINEAR 01 57 +10.6 20.8 2:03 ( 0, 66) 2:03 (180, 44) 223P/Skiff 17 29 -48.9 20.9 19:24 ( 18, 3) 19:18 ( 46, 66) P/2001 T3 (NEAT) 23 22 -32.3 20.9 23:23 ( 0, 23) 23:23 (180, 87) 245P/WISE 13 30 -26.9 21.1 19:24 ( 66,-13) 19:18 ( 69, 18) P/2003 L1 (Scotti) 09 21 +07.1 21.1 4:21 (272, 15) 4:28 (255, 9) P/2002 T5 (LINEAR) 21 12 -26.1 21.2 21:14 ( 0, 29) 21:14 (180, 81) P/2005 Y2 (McNaught) 11 35 +19.9 21.5 4:21 (243, -4) 4:28 (263,-26) 282P/(323137) 2003 BM80 04 10 +25.7 21.5 4:15 ( 0, 81) 4:15 (180, 29) 107P/(4015) Wilson-Harring. 14 17 -15.1 21.6 19:24 ( 70, 2) 19:18 ( 86, 21) P/2013 R3 (Catalina-PanST.) 14 52 -17.2 21.6 19:24 ( 63, 8) 19:18 ( 89, 29) 246P/NEAT 06 50 +26.1 21.8 4:21 (274, 56) 4:28 (215, 20) P/2010 H2 (Vales) 12 53 +03.2 21.9 19:24 ( 97, -4) 19:18 ( 89, -6) 147P/Kushida-Muramatsu 12 26 -00.7 22.1 19:24 ( 97,-12) 19:18 ( 82,-10) (343158) 2009 HC82 13 21 +13.2 22.4 19:24 (101, 7) 19:18 (101, -6) P/2010 TO20 (LINEAR-Grauer) 11 40 +03.9 23.0 4:21 (254,-15) 4:28 (278,-18) 182P/LONEOS 14 31 -11.2 23.8 19:24 ( 71, 7) 19:18 ( 91, 22) D/1952 B1 (Harrington-Wil.) 14 11 -02.0 24.3 19:24 ( 81, 9) 19:18 ( 96, 13) D/1978 R1 (Haneda-Campos) 10 00 +16.2 28.7 4:21 (259, 12) 4:28 (254, -5) 255P/Levy 12 32 -16.7 31.2 19:24 ( 83,-19) 19:18 ( 70, 1)