Comets Waiting for First Observation

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Updated on May 2, 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/2010 H2 ( Vales ) was fainter than 22 mag on 2025 Jan. 27 (Erwin Schwab).

2026 May 16 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)
141P/Machholz 2                     04 07 +19.5  12.8  20:35 (124,-11)  18:32 (107,-11)
P/2021 N1 (ZTF)                     18 41 -50.2  17.4   3:07 (  0,  5)   3:07 (  0, 75)
304P/Ory                            04 36 +22.6  17.4  20:35 (122, -4)  18:32 (113, -7)
407P/PanSTARRS-Fuls                 08 27 +23.5  18.2  20:35 ( 92, 41)  18:32 (154, 27)
P/2012 K3 (Gibbs)                   20 05 -10.7  18.3   3:17 (335, 41)   4:32 (180, 66)
320P/McNaught                       20 17 -37.0  18.7   3:17 (343, 15)   4:42 (  0, 88)
107P/(4015) Wilson-Harrington       16 13 -23.3  18.9   0:41 (  0, 32)   0:41 (180, 78)
114P/Wiseman-Skiff                  01 41 +23.4  19.2   3:17 (244,  4)   5:20 (241,  0)
P/2004 V5 (LINEAR-Hill)             04 59 +32.0  19.2  20:35 (126,  5)  18:32 (123, -9)
373P/Rinner                         03 37 +18.5  19.3  20:35 (129,-17)  18:32 (102,-16)
P/2011 V1 (Boattini)                00 01 -06.5  19.5   3:17 (282,  6)   5:20 (248, 38)
161P/Hartley-IRAS                   02 41 -28.4  19.5   3:17 (281,-37)   5:20 (292, 18)
245P/WISE                           21 39 -25.8  19.6   3:17 (321, 17)   5:20 (230, 76)
P/2009 B1 (Boattini)                03 08 +32.5  19.6   3:17 (224, -5)   5:20 (244,-21)
383P/Christensen                    22 55 +05.8  19.8   3:17 (282, 27)   5:20 (221, 40)
P/2011 N1 (ASH)                     21 53 -43.1  19.9   3:17 (328,  2)   5:20 (309, 76)
469P/PanSTARRS                      17 42 +04.0  20.0   2:09 (  0, 59)   2:09 (180, 51)
139P/Vaisala-Oterma                 23 28 -01.1  20.0   3:17 (283, 16)   5:20 (235, 40)
P/2018 VN2 (Leonard)                23 19 +12.4  20.1   3:17 (273, 26)   5:20 (223, 31)
P/2005 S2 (Skiff)                   22 37 -08.1  20.2   3:17 (297, 22)   5:20 (227, 54)
2000 XO8                            00 51 -04.1  20.3   3:17 (273, -2)   5:20 (255, 27)
P/2022 BV9 (Lemmon)                 12 26 -12.9  20.4  20:49 (  0, 42)  20:49 (180, 68)
412P/WISE                           07 54 +25.2  20.5  20:35 ( 98, 35)  18:32 (148, 22)
P/2009 WX51 (Catalina)              08 17 +22.9  20.5  20:35 ( 92, 39)  18:32 (152, 27)
186P/Garradd                        07 17 +36.5  20.6  20:35 (115, 32)  18:32 (147,  8)
P/2023 B3 (PanSTARRS)               16 01 -09.0  20.6   0:29 (  0, 46)   0:29 (180, 64)
324P/La Sagra                       20 45 -09.1  20.6   3:17 (323, 38)   5:11 (180, 64)
P/2011 P1 (McNaught)                15 27 -24.0  20.6  23:50 (  0, 31)  23:50 (180, 79)
223P/Skiff                          21 07 -44.4  20.7   3:17 (336,  5)   5:20 (345, 80)
(65803) Didymos                     17 26 -22.7  20.8   1:53 (  0, 32)   1:53 (180, 78)
(944) Hidalgo                       16 39 -62.7  20.8   1:07 (  0, -8)   1:07 (  0, 62)
P/2010 H4 (Scotti)                  11 51 +02.7  20.8  20:35 (  9, 57)  20:15 (180, 52)
259P/Garradd                        20 06 -35.8  20.9   3:17 (344, 17)   4:32 (  0, 89)
187P/LINEAR                         10 08 +23.1  20.9  20:35 ( 74, 61)  18:33 (180, 32)
P/2012 T3 (PanSTARRS)               16 58 -12.5  20.9   1:25 (  0, 42)   1:25 (180, 68)
176P/(118401) LINEAR                14 52 -16.7  20.9  23:15 (  0, 38)  23:15 (180, 72)
P/2010 D2 (WISE)                    23 32 +41.0  20.9   3:17 (241, 36)   5:20 (209,  6)
391P/Kowalski                       15 27 +08.3  21.0  23:50 (  0, 63)  23:50 (180, 47)
P/2012 O2 (McNaught)                00 01 -10.2  21.0   3:17 (285,  4)   5:20 (251, 41)
P/2006 HR30 (Siding Spring)         19 44 -37.6  21.0   3:17 (349, 16)   4:11 (  0, 87)
340P/Boattini                       01 38 +11.9  21.1   3:17 (253, -3)   5:20 (249,  8)
137P/Shoemaker-Levy 2               15 17 -18.3  21.1  23:41 (  0, 37)  23:41 (180, 73)
82P/Gehrels 3                       04 47 +22.1  21.1  20:35 (120, -3)  18:32 (114, -5)
2019 OE31                           13 20 -06.3  21.1  21:44 (  0, 49)  21:44 (180, 61)
P/2013 T2 (Schwartz)                00 08 -03.1  21.1   3:17 (279,  7)   5:20 (246, 35)
P/2009 Y2 (Kowalski)                01 09 +30.5  21.2   3:17 (242, 14)   5:20 (231,  1)
(399457) 2002 PD43                  00 30 +00.8  21.2   3:17 (272,  5)   5:20 (247, 28)
P/2007 K2 (Gibbs)                   06 26 +17.2  21.2  20:35 (102, 13)  18:32 (125, 16)
69P/Taylor                          02 48 +00.1  21.2   3:17 (252,-24)   5:20 (269,  1)
2010 RH69                           11 19 +01.6  21.2  20:35 ( 23, 54)  19:43 (180, 54)
435P/PanSTARRS                      20 52 -20.4  21.3   3:17 (328, 28)   5:18 (180, 75)
P/1996 R2 (Lagerkvist)              01 10 +06.2  21.3   3:17 (262,  0)   5:20 (249, 17)
112P/Urata-Niijima                  00 47 -11.4  21.3   3:17 (280, -6)   5:20 (261, 32)
231P/LINEAR-NEAT                    05 54 +17.5  21.3  20:35 (107,  7)  18:32 (120, 10)
P/2017 U3 (PanSTARRS)               22 31 -04.0  21.4   3:17 (295, 25)   5:20 (222, 52)
257P/Catalina                       12 24 -07.1  21.4  20:48 (  0, 48)  20:48 (180, 62)
84P/Giclas                          20 52 -18.0  21.4   3:17 (326, 30)   5:18 (180, 73)
P/2015 X3 (PanSTARRS)               00 43 -18.3  21.5   3:17 (286, -9)   5:20 (267, 37)
359P/LONEOS                         18 44 -12.0  21.5   3:11 (  0, 43)   3:11 (180, 67)
P/2020 G1 (Pimentel)                21 01 +01.4  21.5   3:17 (311, 45)   5:20 (183, 54)
282P/(323137) 2003 BM80             03 18 +21.7  21.5   3:17 (230,-14)   5:20 (255,-17)
230P/LINEAR                         17 48 -15.0  21.6   2:15 (  0, 40)   2:15 (180, 70)
357P/Hill                           21 10 -23.2  21.6   3:17 (325, 23)   5:20 (199, 78)
156P/Russell-LINEAR                 18 52 -40.9  21.6   3:17 (  0, 14)   3:19 (  0, 84)
P/2010 C1 (Scotti)                  04 42 +14.8  21.6  20:35 (115, -9)  18:32 (107, -2)
178P/Hug-Bell                       20 19 -20.5  21.6   3:17 (336, 31)   4:46 (180, 75)
P/2017 D1 (Fuls)                    02 35 +01.8  21.7   3:17 (253,-20)   5:20 (266,  3)
246P/NEAT                           06 38 +31.4  21.7  20:35 (113, 23)  18:32 (137,  7)
P/2010 H2 (Vales)                   18 55 -30.9  21.7   3:17 (359, 24)   3:22 (180, 86)
163P/NEAT                           02 18 +04.2  21.7   3:17 (253,-15)   5:20 (261,  5)
397P/Lemmon                         17 50 -36.7  21.7   2:18 (  0, 18)   2:18 (  0, 88)
P/2005 T3 (Read)                    01 58 +12.1  21.7   3:17 (250, -6)   5:20 (252,  4)
P/2019 A4 (PanSTARRS)               01 21 -01.7  21.8   3:17 (267, -7)   5:20 (258, 20)
312P/NEAT                           18 05 +02.1  21.8   2:32 (  0, 57)   2:32 (180, 53)
P/2021 A5 (PanSTARRS)               02 43 +29.3  22.0   3:17 (230, -3)   5:20 (244,-14)
147P/Kushida-Muramatsu              13 30 -06.7  22.0  21:54 (  0, 48)  21:54 (180, 62)
348P/PanSTARRS                      22 54 -02.3  22.1   3:17 (289, 22)   5:20 (227, 47)
P/2004 FY140 (LINEAR)               13 06 -09.5  22.1  21:30 (  0, 45)  21:30 (180, 65)
311P/PanSTARRS                      22 41 -05.4  22.2   3:17 (294, 23)   5:20 (226, 51)
2015 VA108                          23 53 +06.9  22.3   3:17 (273, 16)   5:20 (234, 30)
P/2015 X6 (PanSTARRS)               10 35 +14.2  22.3  20:35 ( 52, 60)  19:00 (180, 41)
P/2017 FL36 (PanSTARRS)             06 04 +29.9  22.3  20:35 (116, 15)  18:32 (131,  4)
11P/Tempel-Swift-LINEAR             22 25 +04.8  22.3   3:17 (289, 32)   5:20 (213, 45)
489P/Denning                        12 44 -05.8  22.5  21:08 (  0, 49)  21:08 (180, 61)
P/1999 XN120 (Catalina)             06 45 +22.5  22.8  20:35 (104, 19)  18:32 (132, 15)
316P/LONEOS-Christensen             09 12 +05.8  22.8  20:35 ( 65, 40)  18:32 (160, 47)
P/2019 U4 (PanSTARRS)               02 25 +13.0  22.9   3:17 (245,-11)   5:20 (255, -2)
168P/Hergenrother                   01 38 +13.4  23.0   3:17 (252, -2)   5:20 (248,  7)
317P/WISE                           00 32 +13.5  23.1   3:17 (261, 12)   5:20 (237, 19)
P/2016 G1 (PanSTARRS)               04 04 +15.4  23.3  20:35 (122,-15)  18:32 (103, -9)
P/2019 S3 (PanSTARRS)               04 09 +14.9  23.4  20:35 (121,-15)  18:32 (103, -8)
2008 BJ22                           21 17 -08.0  23.6   3:17 (314, 35)   5:20 (193, 62)
366P/Spacewatch                     23 36 -11.4  23.6   3:17 (290,  8)   5:20 (247, 46)
P/2012 O1 (McNaught)                04 03 +18.3  24.0  20:35 (124,-13)  18:32 (105,-11)
198P/ODAS                           07 33 +22.6  24.1  20:35 ( 98, 29)  18:32 (142, 22)
2018 OR                             06 29 +21.8  25.4  20:35 (106, 16)  18:32 (129, 13)
P/1999 RO28 (LONEOS)                06 56 +21.0  26.9  20:35 (102, 21)  18:32 (133, 18)

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