Comets Waiting for First Observation

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Updated on August 8, 2026

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.

  • P/2013 T2 ( Schwartz ) was observed on 2026 June 27 at 21.1 mag at Pan-STARRS 1 telescope (Haleakala), but not officially announced yet.
  • 112P/Urata-Niijima was observed on 2026 Aug. 8 at 19.4 mag by Jean-Francois Soulier, but not officially announced yet.

  • P/2010 H2 ( Vales ) was fainter than 22 mag on 2025 Jan. 27 (Erwin Schwab).
  • P/2009 Y2 ( Kowalski ) was fainter than 19.5 mag on 2026 July 6 (Jean-Francois Soulier).
  • 36P/Whipple was fainter than 20 mag on 2026 July 9 (Jean-Francois Soulier).
  • 391P/Kowalski was fainter than 20 mag on 2026 June 20 (Jean-Francois Soulier).

2026 August 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)
114P/Wiseman-Skiff                  06 09 +29.9  16.8   3:43 (251, 27)   5:18 (224,  8)
112P/Urata-Niijima                  04 17 +18.3  17.1   3:43 (278, 44)   5:18 (208, 32)
373P/Rinner                         06 43 +17.3  18.3   3:43 (258, 14)   5:18 (239, 12)
252P/LINEAR                         07 27 +15.2  18.4   3:43 (254,  4)   5:18 (247,  5)
407P/PanSTARRS-Fuls                 11 17 +08.4  18.5  20:25 (101, -1)  18:51 (106,  8)
P/2004 V5 (LINEAR-Hill)             06 40 +34.8  18.9   3:43 (243, 23)   5:18 (226,  0)
P/2011 N1 (ASH)                     21 41 -54.2  19.0   0:22 (  0,  1)   0:22 (  0, 71)
P/2009 Y2 (Kowalski)                03 57 +40.7  19.3   3:43 (247, 56)   5:18 (195, 12)
P/2009 B1 (Boattini)                06 38 +33.6  19.4   3:43 (244, 23)   5:18 (226,  1)
69P/Taylor                          05 27 +09.4  19.4   3:43 (276, 25)   5:18 (230, 30)
P/2020 G1 (Pimentel)                19 58 +08.3  19.5  22:34 (  0, 63)  22:34 (180, 47)
P/2011 V1 (Boattini)                02 35 +09.2  19.6   3:43 (315, 57)   5:14 (180, 46)
141P/Machholz 2                     09 20 +06.4  19.6   3:43 (244,-23)   5:18 (271,-12)
2000 XO8                            05 12 +20.2  19.9   3:43 (268, 34)   5:18 (219, 24)
P/2010 D2 (WISE)                    23 47 +63.6  20.2   2:28 (180, 61)   2:28 (180, -9)
P/2012 T3 (PanSTARRS)               16 28 -16.7  20.4  20:25 ( 23, 35)  19:06 (180, 72)
P/2015 X3 (PanSTARRS)               02 28 -15.1  20.4   3:43 (335, 36)   5:07 (180, 70)
163P/NEAT                           05 06 +14.2  20.4   3:43 (275, 32)   5:18 (222, 30)
186P/Garradd                        08 40 +29.2  20.5   3:43 (233, -1)   5:18 (246,-16)
P/2007 K2 (Gibbs)                   08 56 +12.5  20.5   3:43 (243,-15)   5:18 (262,-11)
357P/Hill                           20 44 -26.9  20.5  23:21 (  0, 28)  23:21 (180, 82)
P/2013 T2 (Schwartz)                03 10 +21.0  20.6   3:43 (288, 59)   5:18 (189, 33)
469P/PanSTARRS                      17 09 +01.6  20.6  20:25 ( 17, 55)  19:46 (180, 53)
P/2017 D1 (Fuls)                    04 34 +10.8  20.7   3:43 (284, 37)   5:18 (216, 37)
P/1996 R2 (Lagerkvist)              03 18 +17.7  20.7   3:43 (291, 56)   5:18 (192, 36)
348P/PanSTARRS                      23 08 +07.4  20.7   1:48 (  0, 63)   1:48 (180, 47)
P/2011 P1 (McNaught)                15 11 -22.6  20.8  20:25 ( 39, 21)  18:51 (128, 72)
P/2017 U3 (PanSTARRS)               22 31 -05.2  20.8   1:11 (  0, 50)   1:11 (180, 60)
231P/LINEAR-NEAT                    07 53 +17.1  20.8   3:43 (249,  0)   5:18 (250, -1)
156P/Russell-LINEAR                 17 25 -44.0  20.8  20:25 (  4, 11)  20:03 (  0, 81)
P/2023 B3 (PanSTARRS)               15 38 -09.6  20.9  20:25 ( 41, 36)  18:51 (160, 63)
P/2019 A4 (PanSTARRS)               03 25 +03.8  20.9   3:43 (305, 45)   5:18 (198, 50)
(944) Hidalgo                       15 50 -59.9  20.9  20:25 ( 14, -8)  18:51 (  7, 65)
82P/Gehrels 3                       06 48 +22.5  20.9   3:43 (253, 16)   5:18 (236,  8)
P/2022 BV9 (Lemmon)                 12 45 -13.7  20.9  20:25 ( 70,  3)  18:51 (101, 39)
P/2017 S8 (PanSTARRS)               23 45 +19.2  21.0   2:25 (  0, 74)   2:25 (180, 36)
312P/NEAT                           17 14 -03.7  21.0  20:25 ( 13, 50)  19:51 (180, 59)
340P/Boattini                       03 09 +19.9  21.1   3:43 (290, 59)   5:18 (189, 35)
187P/LINEAR                         11 15 +15.4  21.1  20:25 (107,  2)  18:51 (111,  3)
359P/LONEOS                         18 01 -13.9  21.1  20:38 (  0, 41)  20:38 (180, 69)
(65803) Didymos                     15 59 -22.9  21.1  20:25 ( 28, 27)  18:51 (165, 78)
P/2010 H4 (Scotti)                  12 26 -01.7  21.2  20:25 ( 83,  7)  18:51 (109, 28)
397P/Lemmon                         16 54 -35.4  21.2  20:25 ( 11, 18)  19:32 (  0, 90)
391P/Kowalski                       15 12 +02.7  21.2  20:25 ( 57, 41)  18:51 (156, 50)
296P/Garradd                        10 15 -09.1  21.3  20:25 ( 96,-24)  18:51 ( 83,  6)
118P/Shoemaker-Levy 4               19 12 -16.4  21.3  21:48 (  0, 39)  21:48 (180, 71)
P/2012 O2 (McNaught)                02 51 -14.1  21.3   3:43 (328, 35)   5:18 (188, 69)
275P/Hermann                        08 53 +28.3  21.3   3:43 (232, -3)   5:18 (248,-19)
P/2010 C1 (Scotti)                  05 50 +16.1  21.3   3:43 (267, 24)   5:18 (230, 22)
P/2019 B2 (Groeller)                08 35 +08.6  21.3   3:43 (249,-13)   5:18 (263, -4)
59P/Kearns-Kwee                     21 47 -10.9  21.4   0:27 (  0, 44)   0:27 (180, 66)
P/2005 T3 (Read)                    02 43 +16.6  21.4   3:43 (303, 61)   5:18 (181, 38)
2015 VA108                          01 34 +21.1  21.4   3:43 (332, 75)   4:14 (180, 34)
412P/WISE                           11 44 -00.2  21.4  20:25 ( 90, -1)  18:51 (103, 19)
344P/Read                           23 10 -00.6  21.5   1:51 (  0, 55)   1:51 (180, 55)
247P/LINEAR                         05 32 +23.3  21.5   3:43 (262, 31)   5:18 (222, 19)
257P/Catalina                       12 55 -05.9  21.5  20:25 ( 75, 10)  18:51 (110, 36)
304P/Ory                            08 50 +19.4  21.5   3:43 (239, -9)   5:18 (255,-13)
P/1999 J6 (SOHO)                    12 05 -00.2  21.6  20:25 ( 86,  4)  18:51 (107, 24)
460P/PanSTARRS                      08 53 +09.0  21.6   3:43 (246,-16)   5:18 (265, -8)
246P/NEAT                           08 06 +29.8  21.6   3:43 (237,  5)   5:18 (241,-11)
2010 RH69                           12 02 -00.9  21.7  20:25 ( 87,  2)  18:51 (105, 23)
415P/Tenagra                        01 17 -09.2  21.7   3:43 (355, 46)   3:57 (180, 64)
17P/Holmes                          13 29 -28.7  21.7  20:25 ( 52,  2)  18:51 ( 88, 55)
P/2018 H2 (PanSTARRS)               08 10 +24.1  21.7   3:43 (241,  1)   5:18 (246, -8)
230P/LINEAR                         16 59 -16.4  21.7  20:25 ( 15, 37)  19:36 (180, 71)
P/2021 A5 (PanSTARRS)               05 37 +38.7  21.8   3:43 (244, 36)   5:18 (214,  5)
282P/(323137) 2003 BM80             04 33 +26.2  21.8   3:43 (266, 45)   5:18 (208, 23)
(399457) 2002 PD43                  22 01 -02.2  21.8   0:42 (  0, 53)   0:42 (180, 57)
P/2010 H5 (Scotti)                  09 21 +27.9  21.9   3:43 (227, -8)   5:18 (252,-24)
P/2016 P1 (PanSTARRS)               10 27 +00.3  21.9  20:25 (102,-16)  18:51 ( 92,  3)
92P/Sanguin                         15 03 +00.6  21.9  20:25 ( 57, 38)  18:51 (151, 51)
2019 OE31                           13 34 -09.0  21.9  20:25 ( 66, 16)  18:51 (116, 45)
P/2010 H2 (Vales)                   18 01 -34.6  21.9  20:38 (  0, 20)  20:38 (180, 90)
P/2012 B1 (PanSTARRS)               05 24 +27.6  22.0   3:43 (258, 35)   5:18 (218, 16)
176P/(118401) LINEAR                14 43 -16.0  22.0  20:25 ( 49, 23)  18:51 (127, 62)
P/2017 FL36 (PanSTARRS)             08 33 +21.7  22.2   3:43 (240, -4)   5:18 (251,-11)
36P/Whipple                         16 26 -10.9  22.2  20:25 ( 27, 40)  19:03 (180, 66)
2008 BJ22                           21 01 -11.0  22.2  23:37 (  0, 44)  23:37 (180, 66)
P/2019 X2 (PanSTARRS)               05 37 +25.8  22.4   3:43 (259, 32)   5:18 (221, 16)
264P/Larsen                         09 28 -04.3  22.5  20:25 (108,-31)  18:51 ( 80, -7)
336P/McNaught                       09 15 +10.7  22.5   3:43 (241,-19)   5:18 (266,-13)
(551023) 2012 UQ192                 02 29 +01.6  22.6   3:43 (324, 51)   5:09 (180, 53)
298P/Christensen                    05 20 +24.5  22.7   3:43 (262, 34)   5:18 (219, 19)
P/2004 FY140 (LINEAR)               13 31 -11.6  22.8  20:25 ( 65, 14)  18:51 (112, 47)
147P/Kushida-Muramatsu              13 42 -08.7  22.9  20:25 ( 65, 17)  18:51 (118, 47)
P/1999 XN120 (Catalina)             08 49 +16.2  23.1   3:43 (241,-11)   5:18 (258,-11)
P/2019 U4 (PanSTARRS)               05 58 +16.5  23.2   3:43 (265, 23)   5:18 (231, 20)
P/2013 W1 (PanSTARRS)               02 42 +10.1  23.3   3:43 (312, 57)   5:18 (181, 45)
316P/LONEOS-Christensen             10 28 +00.9  23.4  20:25 (102,-16)  18:51 ( 93,  3)
168P/Hergenrother                   06 24 +38.9  23.9   3:43 (240, 28)   5:18 (221,  0)
332P/Ikeya-Murakami                 06 29 +30.2  24.3   3:43 (248, 23)   5:18 (227,  5)

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