Comets Waiting for First Observation

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Updated on August 16, 2017

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

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Bright periodic comets not yet observed in this return.

  • 185P/Petriew was observed on 2017 July 18 at 21.5 mag by Jean-Francois Soulier, but not officially announced yet.
  • 24P/Schaumasse was observed on 2017 July 24 at 19.3 mag by Jean-Gabriel Bosch, but not officially announced yet.
  • 62P/Tsuchinshan 1 was observed on 2017 Aug. 10 at 18.9 mag by Jonathan L. Tuten and B. Lutkenhoner, and on 2017 Aug. 13 at 18.5 mag by Francois Kugel, but not officially announced yet.

  • 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).

2017 August 21 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              09 15 +06.7  15.5   3:53 (252,-13)   5:08 (266, -6)
24P/Schaumasse              06 33 +21.5  17.2   3:53 (262, 28)   5:08 (229, 15)
62P/Tsuchinshan 1           06 11 +19.7  17.8   3:53 (267, 31)   5:08 (226, 20)
P/2006 F1 (Kowalski)        18 22 -15.0  18.2  20:22 (  0, 40)  20:22 (180, 70)
P/2008 O2 (McNaught)        19 12 -28.5  18.3  21:12 (  0, 27)  21:12 (180, 83)
P/2010 P4 (WISE)            01 39 +06.9  18.9   3:42 (  0, 62)   3:42 (180, 48)
P/1999 XN120 (Catalina)     07 29 +22.2  18.9   3:53 (254, 17)   5:08 (238,  5)
P/1998 VS24 (LINEAR)        02 11 +09.2  19.1   3:53 (348, 64)   4:14 (180, 46)
P/2008 T4 (Hill)            22 58 -15.9  19.2   1:02 (  0, 39)   1:02 (180, 71)
P/2004 FY140 (LINEAR)       19 25 -23.3  19.2  21:26 (  0, 32)  21:26 (180, 78)
P/2013 J4 (PanSTARRS)       11 44 +05.5  20.0  20:11 ( 98, -2)  18:57 (101,  7)
31P/Schwassmann-Wachmann 2  03 03 +12.2  20.0   3:53 (319, 62)   5:06 (180, 43)
159P/LONEOS                 02 24 -03.5  20.1   3:53 (347, 51)   4:27 (180, 58)
253P/PanSTARRS              18 31 -19.5  20.1  20:32 (  0, 35)  20:32 (180, 75)
P/2008 CL94 (Lemmon)        00 47 +00.1  20.2   2:51 (  0, 55)   2:51 (180, 55)
59P/Kearns-Kwee             23 23 +03.6  20.3   1:27 (  0, 59)   1:27 (180, 51)
P/2009 SK280 (Spacew.-Hill) 17 26 -39.4  20.3  20:11 (  9, 15)  19:27 (  0, 86)
P/2012 T1 (PanSTARRS)       21 40 -29.3  20.5  23:40 (  0, 26)  23:40 (180, 84)
250P/Larson                 05 43 +21.6  20.5   3:53 (268, 38)   5:08 (220, 22)
37P/Forbes                  11 29 -02.3  20.6  20:11 ( 94,-10)  18:57 ( 93,  8)
P/2011 CR42 (Catalina)      10 36 +15.6  20.7  20:11 (117, -9)  18:57 (100,-13)
223P/Skiff                  17 16 -52.5  20.8  20:11 (  8,  2)  19:17 (  0, 73)
P/2002 EJ57 (LINEAR)        05 21 +27.7  20.9   3:53 (264, 45)   5:08 (212, 20)
82P/Gehrels 3               04 57 +22.6  21.0   3:53 (274, 48)   5:08 (209, 27)
228P/LINEAR                 02 04 +10.9  21.0   3:53 (352, 66)   4:07 (180, 44)
245P/WISE                   12 35 -22.7  21.2  20:11 ( 68, -8)  18:57 ( 83, 33)
P/2002 T5 (LINEAR)          21 22 -25.1  21.2  23:22 (  0, 30)  23:22 (180, 80)
P/2003 L1 (Scotti)          08 60 +08.9  21.2   3:53 (253, -9)   5:08 (262, -4)
263P/Gibbs                  08 27 +19.3  21.3   3:53 (249,  4)   5:08 (249, -3)
P/2005 Y2 (McNaught)        11 15 +21.8  21.5  20:11 (116,  2)  18:57 (111, -9)
P/2001 T3 (NEAT)            23 43 -30.6  21.6   1:46 (  0, 24)   1:46 (180, 86)
P/2013 R3 (Catalina-PanST.) 14 20 -14.8  21.6  20:11 ( 58, 16)  18:57 (110, 50)
282P/(323137) 2003 BM80     04 04 +24.8  21.7   3:53 (280, 59)   5:08 (195, 29)
107P/(4015) Wilson-Harring. 13 43 -12.4  21.8  20:11 ( 66, 11)  18:57 (105, 41)
246P/NEAT                   06 31 +25.6  22.0   3:53 (258, 30)   5:08 (226, 12)
P/2010 H2 (Vales)           12 13 +08.7  22.1  20:11 ( 97,  5)  18:57 (108, 11)
147P/Kushida-Muramatsu      11 53 +02.9  22.2  20:11 ( 95, -2)  18:57 (100, 10)
(343158) 2009 HC82          13 05 +16.1  22.3  20:11 ( 96, 20)  18:57 (123, 15)
P/2010 TO20 (LINEAR-Grauer) 11 19 +06.2  23.0  20:11 (102, -7)  18:57 ( 98,  1)
185P/Petriew                17 04 -05.6  23.1  20:11 ( 25, 46)  19:04 (180, 61)
182P/LONEOS                 13 31 -03.3  23.4  20:11 ( 75, 14)  18:57 (112, 33)
D/1952 B1 (Harrington-Wil.) 13 18 +04.2  23.6  20:11 ( 83, 16)  18:57 (116, 26)
D/1978 R1 (Haneda-Campos)   09 21 +19.1  28.1   3:53 (241, -6)   5:08 (256,-14)
255P/Levy                   11 21 -09.2  28.4  20:11 ( 89,-15)  18:57 ( 86, 11)

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