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.

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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)

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Copyright(C) Seiichi Yoshida (comet@aerith.net). All rights reserved.