Comets Waiting for First Observation

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Updated on June 14, 2025

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/2007 C2 ( Catalina ) was observed on 2024 Oct. 23 at Mt. Lemmon Survey (Nakano Note 5353), but not officially announced yet.

  • P/2007 C2 ( Catalina ) was fainter than 21.5 mag on 2024 Oct. 29 (Erwin Schwab).
  • P/2010 H2 ( Vales ) was fainter than 22 mag on 2025 Jan. 27 (Erwin Schwab).
  • P/2010 T2 ( PanSTARRS ) was fainter than 21.5 mag on 2023 Oct. 17 (Erwin Schwab).

2025 June 25 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)
P/2005 J1 (McNaught)                12 27 -32.9  18.4  21:04 ( 35, 11)  18:27 (127, 87)
341P/Gibbs                          01 28 +07.3  18.7   3:00 (279, 26)   5:37 (213, 42)
P/2005 T5 (Broughton)               01 50 -05.8  19.0   3:00 (287, 13)   5:37 (231, 50)
P/2007 C2 (Catalina)                03 49 +25.0  19.0   3:00 (244,  7)   5:37 (232,  7)
340P/Boattini                       22 08 -10.4  19.2   3:00 (341, 43)   3:56 (180, 65)
188P/LINEAR-Mueller                 22 22 -20.2  19.2   3:00 (340, 32)   4:10 (180, 75)
351P/Wiegert-PanSTARRS              20 18 -16.2  19.3   2:07 (  0, 39)   2:07 (180, 71)
306P/LINEAR                         00 12 -06.2  19.4   3:00 (305, 31)   5:37 (191, 61)
303P/NEAT                           19 07 -32.2  19.4   0:56 (  0, 23)   0:56 (180, 87)
P/2010 U1 (Boattini)                22 12 -04.3  19.4   3:00 (337, 48)   4:00 (180, 59)
145P/Shoemaker-Levy 5               22 57 -21.6  19.8   3:00 (332, 28)   4:45 (180, 76)
248P/Gibbs                          02 53 +16.6  19.9   3:00 (259, 14)   5:37 (228, 23)
356P/WISE                           21 31 -07.8  19.9   3:00 (353, 47)   3:19 (180, 63)
P/2012 T2 (PanSTARRS)               23 06 -20.4  19.9   3:00 (329, 28)   4:54 (180, 75)
171P/Spahr                          04 13 +07.9  19.9   3:00 (255, -8)   5:37 (249, 15)
366P/Spacewatch                     17 43 -28.1  20.0  23:28 (  0, 27)  23:28 (180, 83)
313P/Gibbs                          22 43 -15.9  20.0   3:00 (333, 35)   4:31 (180, 71)
261P/Larson                         20 27 -19.0  20.1   2:15 (  0, 36)   2:15 (180, 74)
P/2004 V5 (LINEAR-Hill)             03 51 +22.5  20.2   3:00 (246,  5)   5:37 (234,  9)
131P/Mueller 2                      23 10 +03.1  20.2   3:00 (313, 48)   4:58 (180, 52)
P/2005 S2 (Skiff)                   21 20 -13.8  20.3   3:00 (357, 41)   3:08 (180, 69)
139P/Vaisala-Oterma                 20 44 -15.5  20.4   2:33 (  0, 40)   2:33 (180, 70)
210P/Christensen                    21 57 -20.9  20.5   3:00 (347, 33)   3:45 (180, 76)
P/2015 TO19 (Lemmon-PanSTARRS)      01 59 +17.2  20.5   3:00 (266, 25)   5:37 (216, 29)
P/2012 O1 (McNaught)                15 53 -16.4  20.5  21:38 (  0, 39)  21:38 (180, 71)
93P/Lovas 1                         21 54 -21.3  20.6   3:00 (348, 33)   3:42 (180, 76)
469P/PanSTARRS                      11 23 +07.1  21.0  21:04 ( 77, 29)  18:27 (152, 44)
P/2005 E1 (Tubbiolo)                15 10 -22.9  21.1  21:04 (  2, 32)  20:56 (180, 78)
P/2017 U3 (PanSTARRS)               20 32 -05.5  21.1   2:21 (  0, 50)   2:21 (180, 60)
367P/Catalina                       18 26 -31.3  21.1   0:15 (  0, 24)   0:15 (180, 86)
128P/Shoemaker-Holt 1               00 27 +06.1  21.1   3:00 (291, 37)   5:37 (194, 48)
31P/Schwassmann-Wachmann 2          00 54 +01.4  21.1   3:00 (290, 29)   5:37 (206, 50)
249P/LINEAR                         05 38 +21.2  21.2   3:00 (231,-14)   5:37 (251,-10)
P/2011 P1 (McNaught)                14 14 -17.5  21.2  21:04 ( 19, 35)  20:00 (180, 73)
186P/Garradd                        06 01 +44.1  21.3   3:00 (212,  0)   5:37 (233,-25)
123P/West-Hartley                   03 13 +16.4  21.3   3:00 (256,  9)   5:37 (232, 20)
P/2021 A5 (PanSTARRS)               23 17 -05.0  21.4   3:00 (317, 40)   5:05 (180, 60)
353P/McNaught                       16 59 +05.0  21.4  22:43 (  0, 60)  22:43 (180, 50)
24P/Schaumasse                      03 07 +10.3  21.4   3:00 (262,  7)   5:37 (235, 25)
P/2011 N1 (ASH)                     19 03 -41.7  21.5   0:52 (  0, 13)   0:52 (  0, 83)
324P/La Sagra                       13 17 -28.3  21.5  21:04 ( 28, 20)  19:03 (180, 83)
317P/WISE                           09 26 +05.7  21.6  21:04 ( 93,  5)  18:27 (121, 29)
379P/Spacewatch                     08 48 +11.4  21.6  21:04 (103,  0)  18:27 (119, 18)
P/2005 T3 (Read)                    01 00 +04.0  21.6   3:00 (287, 29)   5:37 (207, 47)
P/2010 H2 (Vales)                   13 10 +01.5  21.6  21:04 ( 49, 45)  18:56 (180, 54)
P/2010 T2 (PanSTARRS)               07 36 +27.2  21.6  21:04 (126, -3)  18:27 (120, -5)
P/2009 B1 (Boattini)                23 07 +11.9  21.6   3:00 (304, 55)   4:55 (180, 43)
228P/LINEAR                         00 45 +00.2  21.6   3:00 (293, 30)   5:37 (203, 52)
2010 RH69                           09 30 +07.7  21.7  21:04 ( 95,  7)  18:27 (124, 28)
82P/Gehrels 3                       02 46 +16.5  21.7   3:00 (260, 15)   5:37 (227, 23)
243P/NEAT                           21 41 -20.8  21.7   3:00 (352, 34)   3:29 (180, 76)
407P/PanSTARRS-Fuls                 04 57 +22.0  21.9   3:00 (237, -7)   5:37 (245, -2)
P/2019 S3 (PanSTARRS)               20 16 -10.4  21.9   2:04 (  0, 45)   2:04 (180, 65)
P/2015 R2 (PanSTARRS)               02 01 +06.4  22.0   3:00 (275, 18)   5:37 (223, 38)
7P/Pons-Winnecke                    06 44 +25.9  22.0  21:04 (134,-12)  18:27 (112,-14)
P/2016 G1 (PanSTARRS)               23 45 +09.8  22.0   3:00 (297, 47)   5:32 (180, 45)
2018 BJ11                           04 46 +24.9  22.1   3:00 (236, -3)   5:37 (241, -2)
331P/Gibbs                          01 23 +13.9  22.1   3:00 (274, 30)   5:37 (209, 36)
2019 OE31                           11 08 +09.8  22.1  21:04 ( 82, 28)  18:27 (149, 40)
P/2015 X6 (PanSTARRS)               06 06 +22.5  22.2   3:00 (225,-17)   5:37 (253,-16)
P/2017 FL36 (PanSTARRS)             02 50 +29.6  22.3   3:00 (248, 21)   5:37 (219, 13)
147P/Kushida-Muramatsu              10 50 +09.8  22.3  21:04 ( 85, 24)  18:27 (144, 38)
288P/(300163) 2006 VW139            13 11 -04.5  22.4  21:04 ( 44, 40)  18:57 (180, 60)
316P/LONEOS-Christensen             07 11 +16.8  22.7  21:04 (123,-14)  18:27 (108, -4)
9P/Tempel 1                         05 28 +25.3  22.9   3:00 (230,-10)   5:37 (246,-10)
2008 BJ22                           14 43 -00.2  23.0  21:04 ( 16, 54)  20:28 (180, 55)
P/2008 Y12 = P/2014 K3 (SOHO)       16 09 -52.5  24.3  21:53 (  0,  3)  21:53 (  0, 73)
18D/Perrine-Mrkos                   07 09 +12.5  28.0  21:04 (120,-18)  18:27 (104, -1)

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