Comets Waiting for First Observation

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Updated on June 13, 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.
  • 108P/Ciffreo was observed on 2021 June 10 at 18 mag by Jean-Louis Virlichie, but not officially announced yet.
  • 119P/Parker-Hartley was observed on 2021 May 28 at 20 mag by Giuseppe Pappa, but not officially announced 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 June 10 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                         05 00 +25.3  15.6   2:59 (224,-14)   5:33 (251,-17)
P/2014 W12 (Gibbs)                  00 15 +06.6  17.4   2:59 (282, 28)   5:33 (211, 43)
108P/Ciffreo                        01 38 +02.0  17.7   2:59 (273,  8)   5:33 (237, 35)
P/2006 S4 (Christensen)             22 35 -62.3  18.2   2:59 (344,-11)   5:22 (  0, 63)
119P/Parker-Hartley                 22 58 -12.2  18.2   2:59 (312, 29)   5:33 (188, 67)
19P/Borrelly                        23 25 -36.8  18.3   2:59 (323,  5)   5:33 (285, 82)
95P/(2060) Chiron                   00 39 +06.8  18.6   2:59 (278, 23)   5:33 (218, 40)
132P/Helin-Roman-Alu 2              23 03 -02.3  19.1   2:59 (304, 35)   5:33 (187, 57)
61P/Shajn-Schaldach                 17 55 -15.5  19.2   0:43 (  0, 39)   0:43 (180, 71)
179P/Jedicke                        01 33 -08.9  19.3   2:59 (283,  3)   5:33 (246, 44)
297P/Beshore                        18 45 -21.3  19.4   1:33 (  0, 34)   1:33 (180, 76)
P/2016 P1 (PanSTARRS)               12 31 -43.3  19.6  20:59 ( 19,  8)  19:16 (  0, 82)
P/2005 W3 (Kowalski)                02 24 +15.3  19.6   2:59 (256,  6)   5:33 (235, 18)
252P/LINEAR                         07 20 +17.1  19.7  20:59 (111,  0)  18:25 (119, 10)
P/2008 CL94 (Lemmon)                06 51 +29.7  20.1  20:59 (126,  2)  18:25 (124, -4)
274P/Tombaugh-Tenagra               03 28 +11.0  20.1   2:59 (250, -9)   5:33 (250,  9)
P/2011 W1 (PanSTARRS)               03 12 +15.1  20.2   2:59 (249, -3)   5:33 (244, 10)
P/2012 TK8 (Tenagra)                02 24 +19.6  20.3   2:59 (252,  9)   5:33 (232, 15)
P/2007 R4 (Garradd)                 21 49 -28.9  20.7   2:59 (337, 22)   4:36 (180, 84)
102P/Shoemaker 1                    03 26 +36.9  20.7   2:59 (230,  8)   5:33 (229, -7)
P/2005 L1 (McNaught)                17 23 -13.5  20.8   0:11 (  0, 41)   0:11 (180, 69)
142P/Ge-Wang                        01 10 +06.9  20.8   2:59 (273, 17)   5:33 (226, 36)
P/2012 G1 (PanSTARRS)               16 55 -30.5  20.8  23:38 (  0, 24)  23:38 (180, 86)
104P/Kowal 2                        22 34 -02.2  20.8   2:59 (311, 40)   5:21 (180, 57)
2017 MB1                            06 19 +22.3  20.8  20:59 (124, -8)  18:25 (114, -5)
P/2007 S1 (Zhao)                    19 33 -16.8  20.9   2:21 (  0, 38)   2:21 (180, 72)
77P/Longmore                        05 03 +40.7  21.0   2:59 (214, -3)   5:33 (236,-25)
118P/Shoemaker-Levy 4               22 40 -08.6  21.0   2:59 (314, 34)   5:27 (180, 64)
195P/Hill                           00 37 +33.5  21.1   2:59 (251, 36)   5:33 (204, 17)
113P/Spitaler                       22 53 -05.2  21.1   2:59 (308, 35)   5:33 (183, 60)
97P/Metcalf-Brewington              00 28 +07.2  21.2   2:59 (279, 25)   5:33 (215, 41)
281P/MOSS                           03 03 +14.3  21.2   2:59 (251, -2)   5:33 (243, 12)
332P/Ikeya-Murakami                 06 57 +28.5  21.2  20:59 (124,  2)  18:25 (124, -2)
P/2004 V3 (Siding Spring)           12 00 -40.1  21.3  20:59 ( 25,  9)  18:45 (  0, 85)
(431760) 2008 HE                    14 51 -09.7  21.3  21:34 (  0, 45)  21:34 (180, 65)
P/1997 B1 (Kobayashi)               04 20 +31.1  21.3   2:59 (227, -4)   5:33 (241,-12)
298P/Christensen                    14 38 -15.7  21.3  21:22 (  0, 39)  21:22 (180, 71)
P/2019 A4 (PanSTARRS)               22 11 -14.4  21.3   2:59 (325, 33)   4:58 (180, 69)
135P/Shoemaker-Levy 8               09 58 +08.0  21.3  20:59 ( 81, 26)  18:25 (146, 41)
P/2012 S2 (La Sagra)                20 08 -31.7  21.3   2:56 (  0, 23)   2:56 (180, 87)
P/2012 T2 (PanSTARRS)               14 54 -10.3  21.4  21:38 (  0, 45)  21:38 (180, 65)
170P/Christensen                    17 02 -10.6  21.5  23:45 (  0, 44)  23:45 (180, 66)
302P/Lemmon-PanSTARRS               10 41 +13.0  21.5  20:59 ( 79, 37)  18:25 (161, 40)
283P/Spacewatch                     08 47 +15.6  21.5  20:59 ( 98, 16)  18:25 (133, 25)
P/2016 BA14 (PanSTARRS)             08 12 +16.2  21.6  20:59 (103,  9)  18:25 (127, 19)
D/1977 C1 (Skiff-Kosai)             06 01 +24.0  21.6  20:59 (129,-10)  18:25 (113, -9)
75D/Kohoutek                        07 38 +18.7  21.6  20:59 (110,  4)  18:25 (123, 12)
111P/Helin-Roman-Crockett           05 50 +23.4  21.7  20:59 (131,-12)  18:25 (111,-11)
P/2014 A3 (PanSTARRS)               23 47 +11.5  21.8   2:59 (282, 36)   5:33 (200, 41)
P/2010 TO20 (LINEAR-Grauer)         18 06 -25.6  21.8   0:54 (  0, 29)   0:54 (180, 81)
83D/Russell 1                       11 50 -06.8  21.8  20:59 ( 46, 36)  18:35 (180, 62)
86P/Wild 3                          11 07 +21.8  21.8  20:59 ( 85, 47)  18:25 (171, 33)
265P/LINEAR                         05 26 +32.6  21.9  20:59 (140, -9)  18:25 (116,-20)
299P/Catalina-PanSTARRS             06 17 +22.6  22.1  20:59 (125, -9)  18:25 (114, -5)
P/2004 R3 (LINEAR-NEAT)             22 46 -02.6  22.1   2:59 (308, 38)   5:33 (180, 57)
107P/(4015) Wilson-Harrington       12 42 -07.6  22.2  20:59 ( 32, 42)  19:27 (180, 63)
P/2008 WZ96 (LINEAR)                01 48 +06.1  22.4   2:59 (268,  9)   5:33 (235, 31)
147P/Kushida-Muramatsu              21 31 -16.4  22.4   2:59 (336, 35)   4:18 (180, 71)
P/2015 X6 (PanSTARRS)               08 42 +20.6  22.4  20:59 (103, 17)  18:25 (136, 20)
P/2016 G1 (PanSTARRS)               00 34 +10.6  22.6   2:59 (275, 26)   5:33 (214, 38)
P/2014 U4 (PanSTARRS)               03 44 +22.6  22.7   2:59 (239, -4)   5:33 (243, -1)
324P/La Sagra                       23 25 +17.8  22.7   2:59 (279, 44)   5:33 (191, 36)
272P/NEAT                           03 35 +05.7  22.9   2:59 (253,-13)   5:33 (255, 11)
211P/Hill                           01 52 -05.6  22.9   2:59 (277,  1)   5:33 (246, 38)
148P/Anderson-LINEAR                23 51 -04.7  23.0   2:59 (296, 25)   5:33 (210, 56)
73P/Schwassmann-Wachmann 3          07 37 +28.8  23.1  20:59 (119,  9)  18:25 (130,  4)
P/2009 WX51 (Catalina)              19 42 -35.1  23.1   2:30 (  0, 20)   2:30 (  0, 90)
P/2008 QP20 (LINEAR-Hill)           22 50 -08.3  23.5   2:59 (311, 33)   5:33 (182, 63)
325P/Yang-Gao                       07 36 +11.5  23.6  20:59 (105, -1)  18:25 (117, 16)
205P/Giacobini                      15 06 +03.2  23.8  21:49 (  0, 58)  21:49 (180, 52)
P/2014 MG4 (Spacewatch-PanSTARRS)   07 49 +22.7  23.9  20:59 (112,  8)  18:25 (127, 11)
P/2015 Q1 (Scotti)                  21 57 +14.1  23.9   2:59 (305, 58)   4:44 (180, 41)
P/2013 YG46 (Spacewatch)            09 34 +21.8  24.0  20:59 ( 98, 28)  18:25 (147, 26)
206P/Barnard-Boattini               05 26 +03.8  24.1  20:59 (120,-30)  18:25 ( 91, -5)
354P/LINEAR                         13 04 -14.7  25.5  20:59 ( 21, 38)  19:49 (180, 70)

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