Comets Waiting for First Observation

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Updated on March 30, 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.

  • 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 April 12 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)
4P/Faye                             22 54 -02.3  14.9   4:04 (276,  5)   4:57 (260, 18)
201P/LONEOS                         01 21 +08.7  16.2   4:04 (245,-18)   4:57 (272,-18)
98P/Takamizawa                      23 01 -10.4  17.7   4:04 (282, -1)   4:57 (268, 22)
67P/Churyumov-Gerasimenko           22 09 -14.9  18.1   4:04 (293,  6)   4:57 (264, 35)
15P/Finlay                          21 09 -23.2  18.2   4:04 (309, 11)   4:57 (264, 51)
P/2014 W12 (Gibbs)                  21 56 -12.5  18.2   4:04 (293, 10)   4:57 (260, 36)
P/2009 U4 (McNaught)                00 26 -03.5  18.8   4:04 (264,-15)   4:57 (274,  0)
106P/Schuster                       23 46 -16.5  18.8   4:04 (281,-14)   4:57 (279, 16)
P/2006 S4 (Christensen)             21 05 -55.5  18.9   4:04 (332,-12)   4:57 (319, 55)
57P/du Toit-Neujmin-Delporte        15 49 -17.4  19.0   2:29 (  0, 38)   2:29 (180, 72)
193P/LINEAR-NEAT                    21 36 -20.5  19.1   4:04 (303,  9)   4:57 (265, 44)
119P/Parker-Hartley                 22 09 -15.1  19.2   4:04 (293,  6)   4:57 (264, 35)
P/2016 P1 (PanSTARRS)               12 56 -48.5  19.4  23:32 (  0,  6)  23:32 (  0, 76)
297P/Beshore                        18 39 -18.3  19.7   4:04 (339, 34)   4:57 (197, 73)
179P/Jedicke                        00 36 -12.4  19.8   4:04 (270,-22)   4:57 (283,  3)
108P/Ciffreo                        23 31 -12.1  19.9   4:04 (279, -8)   4:57 (273, 16)
P/2005 W3 (Kowalski)                00 51 +09.5  20.0   4:04 (249,-12)   4:57 (267,-12)
61P/Shajn-Schaldach                 18 14 -16.7  20.0   4:04 (345, 37)   4:53 (180, 72)
P/2008 CL94 (Lemmon)                06 01 +30.7  20.1  19:57 ( 99, 48)  19:03 (148, 16)
2017 MB1                            00 19 -00.2  20.2   4:04 (262,-11)   4:57 (270,  0)
265P/LINEAR                         02 30 +24.2  20.3  19:57 (117,  5)  19:03 (111,-13)
102P/Shoemaker 1                    01 15 +22.7  20.3   4:04 (236, -7)   4:57 (258,-24)
P/2011 W1 (PanSTARRS)               01 55 +09.3  20.5  19:57 (110,-11)  19:03 ( 93,-12)
274P/Tombaugh-Tenagra               02 10 +03.4  20.6  19:57 (103,-12)  19:03 ( 91, -5)
P/2012 TK8 (Tenagra)                00 57 +11.4  20.6   4:04 (247,-12)   4:57 (266,-15)
19P/Borrelly                        22 00 -34.1  20.6   4:04 (309, -4)   4:57 (286, 45)
298P/Christensen                    15 21 -15.9  20.7   2:01 (  0, 39)   2:01 (180, 71)
P/2012 G1 (PanSTARRS)               17 20 -33.1  20.9   4:00 (  0, 22)   4:00 (180, 88)
75D/Kohoutek                        05 01 +21.6  21.0  19:57 ( 95, 33)  19:03 (131, 16)
286P/Christensen                    13 55 -35.3  21.0   0:36 (  0, 20)   0:36 (  0, 90)
302P/Lemmon-PanSTARRS               10 36 +13.9  21.1  21:13 (  0, 69)  21:13 (180, 41)
142P/Ge-Wang                        23 28 -00.8  21.2   4:04 (270, -1)   4:57 (263, 11)
135P/Shoemaker-Levy 8               09 24 +08.8  21.2  20:01 (  0, 64)  20:01 (180, 46)
83D/Russell 1                       11 04 -15.9  21.2  21:40 (  0, 39)  21:40 (180, 71)
77P/Longmore                        03 46 +38.3  21.2  19:57 (120, 26)  19:03 (132, -8)
P/2005 L1 (McNaught)                17 41 -14.6  21.3   4:04 (355, 40)   4:21 (180, 70)
195P/Hill                           00 03 +29.3  21.3   4:04 (240,  9)   4:57 (244,-14)
P/2004 V3 (Siding Spring)           12 29 -42.9  21.3  23:05 (  0, 12)  23:05 (  0, 82)
281P/MOSS                           02 05 +09.4  21.3  19:57 (109, -9)  19:03 ( 95,-10)
107P/(4015) Wilson-Harrington       13 17 -11.8  21.4  23:53 (  0, 43)  23:53 (180, 67)
P/2012 T2 (PanSTARRS)               15 19 -11.3  21.4   1:59 (  0, 44)   1:59 (180, 66)
169P/NEAT                           15 55 -08.5  21.5   2:36 (  0, 46)   2:36 (180, 64)
252P/LINEAR                         04 16 +13.7  21.5  19:57 ( 94, 19)  19:03 (118, 14)
D/1977 C1 (Skiff-Kosai)             04 18 +21.4  21.5  19:57 (100, 24)  19:03 (124,  9)
118P/Shoemaker-Levy 4               22 03 -11.2  21.6   4:04 (291, 10)   4:57 (259, 34)
111P/Helin-Roman-Crockett           04 33 +21.4  21.6  19:57 ( 98, 27)  19:03 (126, 11)
P/1997 B1 (Kobayashi)               02 57 +27.4  21.6  19:57 (116, 11)  19:03 (117, -9)
P/2015 X6 (PanSTARRS)               07 07 +24.4  21.7  19:57 ( 79, 59)  19:03 (160, 28)
P/2007 S1 (Zhao)                    19 28 -17.4  21.7   4:04 (325, 30)   4:57 (227, 66)
132P/Helin-Roman-Alu 2              21 34 -10.6  21.7   4:04 (295, 16)   4:57 (254, 39)
(52872) Okyrhoe                     22 57 -03.3  21.8   4:04 (277,  4)   4:57 (261, 18)
283P/Spacewatch                     07 12 +14.7  22.0  19:57 ( 63, 55)  19:03 (157, 37)
P/2019 A4 (PanSTARRS)               21 18 -15.5  22.0   4:04 (302, 15)   4:57 (256, 45)
P/2010 TO20 (LINEAR-Grauer)         18 20 -25.1  22.1   4:04 (346, 28)   4:57 (184, 80)
113P/Spitaler                       22 02 -11.3  22.1   4:04 (291, 10)   4:57 (259, 34)
P/2007 R4 (Garradd)                 20 40 -25.4  22.2   4:04 (315, 14)   4:57 (262, 58)
P/2014 U4 (PanSTARRS)               01 29 +10.4  22.2  19:57 (115,-15)  19:03 ( 91,-18)
97P/Metcalf-Brewington              23 15 +01.5  22.2   4:04 (270,  3)   4:57 (260, 12)
P/2016 BA14 (PanSTARRS)             04 41 +08.2  22.3  19:57 ( 85, 22)  19:03 (118, 22)
P/2013 W1 (PanSTARRS)               15 19 -10.8  22.6   2:00 (  0, 44)   2:00 (180, 66)
P/2016 G1 (PanSTARRS)               22 43 -00.3  22.7   4:04 (276,  8)   4:57 (256, 19)
P/2007 Q2 (Gilmore)                 01 57 +07.0  22.7  19:57 (108,-12)  19:03 ( 92,-10)
324P/La Sagra                       22 14 +03.6  23.0   4:04 (277, 16)   4:57 (248, 22)
104P/Kowal 2                        21 36 -09.0  23.1   4:04 (294, 16)   4:57 (252, 38)
206P/Barnard-Boattini               02 43 +04.0  23.3  19:57 ( 99, -5)  19:03 ( 96,  1)
P/2009 WX51 (Catalina)              19 57 -29.6  23.3   4:04 (326, 16)   4:57 (263, 68)
P/2014 MG4 (Spacewatch-PanSTARRS)   07 15 +24.7  23.7  19:57 ( 78, 61)  19:03 (162, 28)
P/2013 YG46 (Spacewatch)            09 11 +25.4  23.7  19:57 ( 12, 80)  19:49 (180, 30)
354P/LINEAR                         13 37 -19.0  24.3   0:17 (  0, 36)   0:17 (180, 74)
320P/McNaught                       01 10 +10.6  24.7   4:04 (246,-15)   4:57 (269,-17)
P/1999 J6=P/2004 V9=P/2010 H3 (SOHO)21 03 -19.8  25.7   4:04 (307, 15)   4:57 (258, 50)

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