Weekly Information about Bright Comets (2026 Apr. 18: North)

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 Updated on April 18, 2026
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Best time and the azimuth, altitude (A,h) are at lat. 35 deg in the Northern Hemisphere.
Azimuth indicates 0 for south, 90 for west, 180 for north, 270 for east.

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* C/2025 R3 ( PanSTARRS )

Now it is 4.6 mag (Apr. 16, Osamu Miyazaki). It will fade out rapidly after this. Now it is not observable. It will appear soon in the Southern Hemisphere. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 18   0  3.81   17 44.4   0.643   0.501    24    4.5   3:55 (252,  6)  
Apr. 25   1 58.82   10 16.9   0.494   0.514     3    4.1   3:45 (243,-17)

* 88P/Howell

Now it is 9.6 mag (Apr. 14, Chris Wyatt). Fading gradually. It stays extremely low in the Northern Hemisphere. But it will become high in summer. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 18  23  9.03   -8 47.9   1.956   1.398    42    9.7   3:55 (281,  1)  
Apr. 25  23 29.52   -6 43.9   1.954   1.418    44    9.7   3:45 (279,  1)

* C/2025 A6 ( Lemmon )

It brightened up to 3.7 mag in late October (Oct. 26, Juan Jose Gonzalez). Now it is 11.3 mag (Mar. 15, Chris Wyatt). It will fade out rapidly after this. In the Northern Hemisphere, it is not observable now, but it will be observable soon. In the Southern Hemisphere, it stays observable in good condition. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 18  11 41.27  -57 34.7   2.077   2.805   127   12.3  21:54 (  0, -2)  
Apr. 25  11 21.34  -54 12.0   2.172   2.895   127   12.6  21:07 (  0,  1)

* 24P/Schaumasse

It brightened up to 8.4 mag in January (Jan. 14, Mitsunori Tsumura). Now it is 12.5 mag (Apr. 14, Chris Wyatt). Fading rapidly. It will be fainter than 18 mag in July. It stays observable in good condition. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 18  14 57.57    2 59.8   0.755   1.724   156   12.4   1:16 (  0, 58)  
Apr. 25  14 48.07    2  9.6   0.798   1.782   161   12.8   0:39 (  0, 57)

* 78P/Gehrels 2

It will brighten up to 12 mag in summer. Now it is 14.5 mag (Jan. 16, Kunihiro Shima). It stays 13 mag for a while. Now it is not observable. It will appear in May in the Southern Hemisphere, or in June in the Northern Hemisphere. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 18   1 10.02    8 37.3   3.070   2.081     8   13.0   3:55 (249,-13)  
Apr. 25   1 25.68    9 58.4   3.045   2.067    10   12.9   3:45 (248,-12)

* C/2024 E1 ( Wierzchos )

It brightened up to 6.6 mag in January (Jan. 28, Chris Wyatt). The nucleus was disintegrated in March and the comet is fading and getting diffused very rapidly. Now it is 13.5 mag (Apr. 8, Ken-ichi Kadota). Fading rapidly. It will be fainter than 18 mag in August. It will be unobservable in June. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 18   5 17.52   18 57.5   2.192   1.769    52   13.3  20:04 ( 94, 29)  
Apr. 25   5 31.72   20 56.6   2.374   1.874    48   13.8  20:11 ( 99, 26)

* 10P/Tempel 2

It is expected to brighten up to 8 mag in summer. Now it is 15.0 mag (Apr. 10, Jean-Francois Soulier). Brightening rapidly. It stays observable in good condition. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 18  18 46.81   -9 36.5   1.229   1.781   105   13.8   3:55 (337, 43)  
Apr. 25  19  0.37   -9 13.5   1.137   1.742   108   13.3   3:45 (338, 43)

* 235P/LINEAR

It became brighter than expected. Now it is 13.6 mag (Mar. 23, Ken Harikae). It will fade out rapidly after this. It stays observable in good condition. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 18  17 16.96  -13 41.4   1.414   2.177   127   13.6   3:34 (  0, 41)  
Apr. 25  17 17.33  -12 49.7   1.377   2.200   134   13.7   3:07 (  0, 42)

* 141P/Machholz 2

The condition is very bad in this apparition. It is not observable at all. It brightens up to 13 mag, but it will turn to fade out rapidly after that. It will be fainter than 18 mag in July. It will never be observable after this. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 18   1 36.51   13 54.2   1.811   0.812     3   14.2   3:55 (241,-15)  
Apr. 25   2 14.11   16  0.8   1.810   0.808     3   13.7  20:11 (123,-15)

* C/2024 J3 ( ATLAS )

Now it is 13.9 mag (Mar. 20, Kunihiro Shima). It stays 13 mag for a while. In the Northern Hemisphere, it stays observable in good condition. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 18  20 21.34   15 49.4   4.413   4.315    77   13.8   3:55 (287, 49)  
Apr. 25  20 22.78   17 47.2   4.298   4.289    82   13.7   3:45 (288, 53)

* 29P/Schwassmann-Wachmann 1

Now it is 11.9 mag (Apr. 16, Toru Yusa). In the Northern Hemisphere, it will be getting lower gradually after this, and it will be unobservable in August. In the Southern Hemisphere, it stays observable in good condition. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 18  11  2.29   -1 27.8   5.520   6.313   139   13.7  21:16 (  0, 53)  
Apr. 25  11  0.78   -1 15.8   5.596   6.314   132   13.7  20:47 (  0, 54)

* C/2024 T5 ( ATLAS )

Now it is 13.9 mag (Mar. 12, ATLAS South Africa). Brightening slowly. In the Northern Hemisphere, it is not observable now, but it will appear in July. It locates somewhat low in the Southern Hemisphere. But it will become high in summer. It is expected to brighten up to 11 mag in next winter. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 18   3 28.18  -22  5.0   5.755   5.050    41   14.1  20:04 ( 74,-16)  
Apr. 25   3 34.63  -21  3.7   5.741   5.013    40   14.1  20:11 ( 79,-22)

* C/2023 R1 ( PanSTARRS )

Now it is 14.0 mag (Apr. 12, Hirohisa Sato). It stays 14 mag for a while. It stays observable in good condition. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 18  19 17.39   -3 46.0   3.308   3.570    96   14.5   3:55 (324, 45)  
Apr. 25  19 10.08   -3 55.6   3.174   3.572   105   14.4   3:45 (332, 47)

* C/2014 UN271 ( Bernardinelli-Bernstein )

Very large comet. It is expected to brighten up to 13 mag in 2031. Now it is 14.9 mag (Mar. 12, Andrew Pearce). It stays 15 mag for a while. In the Northern Hemisphere, it is not observable now. In the Southern Hemisphere, it stays observable in good condition. In the Northern Hemisphere, it is not observable until 2030. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 18   5  8.19  -69 34.1  14.073  14.067    87   14.7  20:04 ( 22,-26)  
Apr. 25   5 13.53  -69 15.6  14.038  14.046    88   14.7  20:11 ( 23,-28)

* C/2022 QE78 ( ATLAS )

Now it is 14.7 mag (Mar. 23, Ken-ichi Kadota). It stays 15 mag for a while. In the Northern Hemisphere, it will be getting lower gradually. In the Southern Hemisphere, it will be unobservable in July. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 18   9  3.95   32  1.4   5.426   5.704   101   14.7  20:04 ( 75, 80)  
Apr. 25   9  5.94   32  1.2   5.545   5.719    94   14.8  20:11 ( 85, 73)

* C/2022 N2 ( PanSTARRS )

Now it is 15.3 mag (Apr. 8, Ken-ichi Kadota). It stays 15 mag for a while. It will be unobservable in May. But it will be observable again in July in the Northern Hemisphere, or in August in the Southern Hemisphere. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 18   4 31.57   26  5.5   5.128   4.443    42   15.0  20:04 (107, 23)  
Apr. 25   4 39.87   26 16.3   5.226   4.474    37   15.1  20:11 (110, 18)

* C/2021 G2 ( ATLAS )

Now it is 15.2 mag (Apr. 8, Toru Yusa). It stays 15 mag for a while. It stays observable in good condition. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 18  17 30.21   10 47.1   6.089   6.641   119   15.1   3:47 (  0, 66)  
Apr. 25  17 29.14   11 35.3   6.052   6.674   124   15.1   3:19 (  0, 67)

* 93P/Lovas 1

Now it is 16.0 mag (Jan. 18, Kunihiro Shima). Fading slowly. Now it is not observable. It will appear in August in the Northern Hemisphere. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 18   2 16.11   21 10.3   2.657   1.696    13   15.6  20:04 (121, -5)  
Apr. 25   2 36.42   22 56.5   2.662   1.691    11   15.5  20:11 (124, -6)

* 218P/LINEAR

Now it is 16.1 mag (Apr. 1, ATLAS Chile). It will fade out rapidly after this. It will be fainter than 18 mag in June. In the Northern Hemisphere, it will be getting higher gradually. In the Southern Hemisphere, it stays observable in good condition. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 18  21 44.52  -10 58.1   1.348   1.263    62   15.7   3:55 (296, 16)  
Apr. 25  22  3.38   -9 19.0   1.360   1.303    64   15.9   3:45 (295, 17)

* 63P/Wild 1

Now it is 14.7 mag (Apr. 11, Michael Jager, Gerald Rhemann). Brightening slowly. In the Northern Hemisphere, it will be getting lower gradually after this, and it will be unobservable in July. It locates somewhat low in the Southern Hemisphere. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 18   7 14.49   36 35.1   2.087   2.121    78   15.9  20:04 (104, 59)  
Apr. 25   7 27.93   35  2.2   2.133   2.097    74   15.7  20:11 (103, 54)

* C/2024 R4 ( PanSTARRS )

Now it is 15.7 mag (Apr. 2, Ken-ichi Kadota). It stays 15 mag for a while. In the Northern Hemisphere, it stays observable in good condition. It stays extremely low in the Southern Hemisphere. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 18  22 11.99   31  9.7   6.792   6.235    52   15.8   3:55 (253, 34)  
Apr. 25  22 13.38   32 18.8   6.690   6.198    56   15.8   3:45 (253, 37)

* 240P/NEAT

It brightened up to 11.1 mag in winter (Nov. 15, Masayoshi Yoshimi). The component B also brightened rapidly up to 13.8 mag (Ded. 8, Masayoshi Yoshimi). Now it is 15.6 mag (Apr. 8, Hiroshi Abe). It will fade out rapidly after this. It will be fainter than 18 mag in July. In the Northern Hemisphere, it will be getting lower gradually. In the Southern Hemisphere, it will be unobservable in June. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 18   5 38.82   34 50.7   2.673   2.316    58   15.8  20:04 (109, 40)  
Apr. 25   5 54.23   35 16.8   2.760   2.337    55   16.0  20:11 (111, 36)

* C/2025 Q3 ( ATLAS )

It became brighter than expected. Now it is 14.9 mag (Mar. 8, Martin Masek). Fading gradually. It will be fainter than 18 mag in July. In the Northern Hemisphere, it will never be observable after this. It locates somewhat low in the Southern Hemisphere. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 18   3 28.47  -26 31.6   2.786   2.197    45   15.8  20:04 ( 70,-19)  
Apr. 25   3 40.10  -27 41.6   2.793   2.221    46   15.9  20:11 ( 72,-24)

* 123P/West-Hartley

It will brighten up to 15 mag from autumn to winter. Now it is 17.1 mag (Apr. 8, Erik Bryssinck). Brightening slowly. It will be unobservable in May in the Southern Hemisphere, or in June in the Northern Hemisphere. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 18   4 58.60   32 23.6   2.988   2.466    49   16.3  20:04 (110, 31)  
Apr. 25   5 12.34   32 43.4   3.027   2.442    46   16.2  20:11 (113, 27)

* C/2022 R6 ( PanSTARRS )

Now it is 16.4 mag (Apr. 6, ATLAS-MLO, Mauna Loa). It stays 17 mag for a while. It will be getting lower gradually after this, and it will be unobservable in June in the Northern Hemisphere, or in July in the Southern Hemisphere. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 18   8 31.41    0  3.3   6.471   6.752   101   16.3  20:04 ( 32, 51)  
Apr. 25   8 32.85    0 45.3   6.588   6.763    95   16.4  20:11 ( 43, 47)

* C/2024 G6 ( ATLAS )

Now it is 16.2 mag (Apr. 1, ATLAS Chile). It stays 17 mag for a while. It stays observable in good condition. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 18  16 17.96    6 43.1   5.664   6.441   137   16.4   2:35 (  0, 62)  
Apr. 25  16 13.07    7 50.8   5.615   6.444   142   16.4   2:03 (  0, 63)

* C/2025 Y1 ( ATLAS )

Now it is 16.3 mag (Apr. 13, ATLAS Chile). It stays 16 mag for a while. It stays observable in good condition. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 18  12 53.25    3  8.0   4.875   5.836   161   16.6  23:07 (  0, 58)  
Apr. 25  12 50.33    3 31.6   4.859   5.783   154   16.6  22:37 (  0, 58)

* C/2025 J1 ( Borisov )

Now it is 16.9 mag (Apr. 6, ATLAS-HKO, Haleakala). It stays 17 mag for a while. In the Northern Hemisphere, it will be getting lower gradually after this, and it will be unobservable in June. But it will be observable again in July. In the Southern Hemisphere, it is not observable now, but it will appear in August. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 18   5 18.42   44 48.2   4.057   3.615    57   16.6  20:04 (123, 39)  
Apr. 25   5 24.58   43  9.3   4.143   3.607    51   16.7  20:11 (123, 33)

* C/2026 B2 ( Sun-Gao )

Bright new comet discovered near Sun. It became brighter furthermore after the discovery, brightened up to 12.7 mag (Feb. 14, Mike Olason). Now it is 17.2 mag (Apr. 8, Ken-ichi Kadota). Fading rapidly. It will be fainter than 18 mag in May. It locates somewhat low in the Northern Hemisphere. In the Southern Hemisphere, it will never be observable after this. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 18   0  5.20   37 34.8   2.655   1.917    34   16.6   3:55 (235, 16)  
Apr. 25   0 24.18   38 44.0   2.732   1.988    34   17.2   3:45 (234, 16)

* 493P/2024 Q2 ( LONEOS )

Now it is 16.8 mag (Apr. 7, Alfons Diepvens). It stays 17 mag for a while. In the Northern Hemisphere, it will be getting lower gradually after this, and it will be unobservable in July. But it will be observable again in August. It stays extremely low in the Southern Hemisphere. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 18   5 38.80   44 55.1   4.254   3.864    60   17.0  20:04 (122, 42)  
Apr. 25   5 49.30   44 30.6   4.337   3.871    56   17.0  20:11 (123, 38)

* C/2025 T1 ( ATLAS )

It brightened up to 9.0 mag from late November to early December (Nov. 22, Thomas Lehmann). Now it is 16.7 mag (Apr. 10, ATLAS Chile). It will fade out rapidly after this. It will be fainter than 18 mag in May. In the Northern Hemisphere, it will never be observable after this. In the Southern Hemisphere, it stays observable in good condition. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 18  22 33.48  -29 48.3   2.634   2.317    60   17.1   3:55 (303, -5)  
Apr. 25  22 37.40  -32  2.6   2.592   2.398    67   17.4   3:45 (307, -4)

* 65P/Gunn

Now it is 16.9 mag (Nov. 20, Thomas Lehmann). It stays 17 mag for a while. In the Northern Hemisphere, it is not observable now, but it will appear in May. In the Southern Hemisphere, it will be getting higher gradually. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 18  23 31.61  -11 12.6   3.989   3.273    39   17.2   3:55 (280, -5)  
Apr. 25  23 40.30  -10 23.9   3.940   3.287    43   17.1   3:45 (281, -3)

* C/2023 F3 ( ATLAS )

Now it is 16.9 mag (Apr. 4, ATLAS Chile). It stays 18 mag for a while. In the Northern Hemisphere, it will be getting lower gradually after this, and it will be unobservable in June. In the Southern Hemisphere, it stays observable in good condition. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 18   9  6.75  -11 33.9   5.681   6.136   112   17.2  20:04 ( 14, 42)  
Apr. 25   9  4.09  -10 30.0   5.815   6.163   105   17.2  20:11 ( 26, 41)

* C/2022 E2 ( ATLAS )

It was observed at 12-13 mag for a long time in 2024. Now it is 17.2 mag (Apr. 8, Alfons Diepvens). It stays 17 mag for a while. In the Northern Hemisphere, it will be getting higher gradually. It locates somewhat low in the Southern Hemisphere. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 18  23 10.74   29 18.6   6.877   6.142    40   17.2   3:55 (248, 21)  
Apr. 25  23 12.33   29 36.5   6.869   6.185    43   17.2   3:45 (250, 25)

* C/2023 X2 ( Lemmon )

Now it is 17.5 mag (Mar. 29, Alfons Diepvens). It stays 17 mag for a while. In the Northern Hemisphere, it stays observable in good condition. In the Southern Hemisphere, it will never be observable after this. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 18  21 27.82   86 11.5   5.277   5.158    77   17.2   3:55 (184, 37)  
Apr. 25  20 56.61   87 10.4   5.309   5.167    76   17.2   3:45 (182, 37)

* C/2025 E1 ( PanSTARRS )

Now it is 17.2 mag (Apr. 14, ATLAS Chile). It stays 17 mag for a while. In the Northern Hemisphere, it will never be observable after this. In the Southern Hemisphere, it stays observable in good condition. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 18   8 58.77  -67 37.6   3.818   4.222   107   17.3  20:04 (  5,-13)  
Apr. 25   8 48.67  -66 55.0   3.816   4.204   105   17.3  20:11 ( 10,-14)

* C/2024 G4 ( PanSTARRS )

Now it is 17.2 mag (Mar. 12, ATLAS South Africa). It stays 17 mag for a while. It stays observable in good condition. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 18  20 10.39    3  4.0   4.932   4.905    82   17.4   3:55 (303, 42)  
Apr. 25  20 13.83    3 22.1   4.838   4.908    88   17.3   3:45 (307, 45)

* 40P/Vaisala 1

It became brighter than expected, brightened up to 14.3 mag (Jan. 21, Michael Jager). Now it is 17.1 mag (Apr. 14, Francois Kugel). Fading gradually. It will be fainter than 18 mag in June. It stays observable in good condition. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 18  18  1.45   -9 32.2   1.753   2.376   116   17.4   3:55 (352, 45)  
Apr. 25  18  2.21   -9 18.9   1.720   2.417   122   17.4   3:45 (357, 46)

* C/2024 A1 ( ATLAS )

Now it is 17.0 mag (Apr. 1, ATLAS-MLO, Mauna Loa). It stays 18 mag for a while. In the Northern Hemisphere, it will be getting lower gradually. In the Southern Hemisphere, it will never be observable after this. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 18   6 18.89   63 30.6   4.921   4.695    71   17.4  20:04 (149, 48)  
Apr. 25   6 23.13   63 30.5   5.034   4.728    66   17.5  20:11 (147, 44)

* C/2019 E3 ( ATLAS )

Very far object. It stays 17 mag for a while. In the Northern Hemisphere, it is not observable now, but it will appear in July. In the Southern Hemisphere, it will be getting higher gradually. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 18   0 32.13  -42 51.4  11.864  11.331    55   17.4   3:55 (303,-32)  
Apr. 25   0 34.25  -42 39.5  11.820  11.346    59   17.4   3:45 (304,-29)

* 195P/Hill

Now it is 17.0 mag (Apr. 5, ATLAS-MLO, Mauna Loa). It stays 18 mag for a while. In the Northern Hemisphere, it will be unobservable in June. In the Southern Hemisphere, it stays observable in good condition. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 18   9 19.67  -28 16.3   4.053   4.587   116   17.4  20:04 (  7, 26)  
Apr. 25   9 21.19  -27 25.1   4.125   4.595   111   17.5  20:11 ( 16, 26)

* C/2023 H5 ( Lemmon )

Now it is 17.1 mag (Apr. 8, Alfons Diepvens). It stays 18 mag for a while. In the Northern Hemisphere, it stays observable in good condition. In the Southern Hemisphere, it will never be observable after this. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 18  21 56.18   63  1.6   5.255   4.929    65   17.5   3:55 (213, 42)  
Apr. 25  22  2.36   63 28.1   5.282   4.957    65   17.5   3:45 (213, 43)

* 260P/McNaught

It will brighten up to 13 mag and will be observable in good condition from summer to autumn. Now it is 18.1 mag (Apr. 10, ATLAS Chile). It will brighten rapidly after this. It locates somewhat low in the Northern Hemisphere. But it will become high in summer. In the Southern Hemisphere, it stays observable in good condition. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 18  22 21.91  -20 26.4   2.160   1.843    58   17.9   3:55 (297,  3)  
Apr. 25  22 39.45  -18 27.2   2.068   1.798    60   17.5   3:45 (296,  4)

* (248590) 2006 CS

It seems to be a parent of the beta-Tucanids meteor shower. Now it is 17.7 mag (Apr. 12, Guy Wells). Fading gradually. It will be fainter than 18 mag soon. In the Northern Hemisphere, it stays observable in good condition. In the Southern Hemisphere, it will never be observable after this. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 18  20 17.42   86 29.2   0.538   1.044    78   17.5   3:55 (183, 38)  
Apr. 25  17 42.98   84 38.0   0.647   1.100    80   17.8   3:29 (180, 40)

* 43P/Wolf-Harrington

Now it is 17.6 mag (Apr. 13, Toru Yusa). Fading slowly. It will be fainter than 18 mag in May. In the Northern Hemisphere, it will be getting lower gradually. In the Southern Hemisphere, it stays observable in good condition. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 18  10 37.54   -3 56.7   2.238   3.020   133   17.6  20:52 (  0, 51)  
Apr. 25  10 38.10   -3 28.0   2.331   3.046   127   17.7  20:25 (  0, 51)

* C/2024 G2 ( ATLAS )

Now it is 17.1 mag (Mar. 21, Masayoshi Yoshimi). It stays 18 mag for a while. It stays observable in good condition. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 18  11  2.23    7 48.0   5.045   5.810   136   17.7  21:16 (  0, 63)  
Apr. 25  10 58.36    8 51.4   5.157   5.830   127   17.7  20:45 (  0, 64)

* C/2025 V2 ( Rankin )

It is expected to brighten up to 12.5 mag in 2027 spring. Now it is 17.4 mag (Apr. 7, Erik Bryssinck). It stays 17 mag for a while. It will be getting lower gradually after this, and it will be unobservable in August. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 18   9  0.83   22 30.3   3.905   4.253   103   17.7  20:04 ( 43, 74)  
Apr. 25   9  1.61   22 48.9   3.953   4.193    96   17.7  20:11 ( 61, 68)

* (15504) 1999 RG33

Peculiar asteroid moving along a cometary orbit. It stays 18 mag for a while. It stays observable in good condition. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 18  13 18.08   -7 19.0   3.044   4.043   173   17.8  23:32 (  0, 48)  
Apr. 25  13 12.00   -7 23.1   3.015   3.995   164   17.9  22:58 (  0, 47)

* C/2025 M2 ( PanSTARRS )

It is expected to brighten up to 12 mag from 2027 to 2028. Now it is 17.2 mag (Apr. 10, ATLAS Chile). Brightening slowly. In the Northern Hemisphere, it will be getting higher gradually. In the Southern Hemisphere, it stays observable in good condition. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 18  21  6.55  -16 31.9   6.338   6.128    73   17.9   3:55 (307, 19)  
Apr. 25  21  6.20  -16 30.2   6.164   6.076    80   17.8   3:45 (310, 21)

* C/2020 V2 ( ZTF )

It was observed at 9-10 mag for a long time in 2023. It stays 18 mag for a while. In the Northern Hemisphere, it will never be observable after this. In the Southern Hemisphere, it stays observable in good condition. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 18  20 20.44  -68 21.4   9.646   9.809    96   17.9   3:55 (345,-18)  
Apr. 25  20 18.79  -68 55.1   9.612   9.857   101   17.9   3:45 (347,-17)

* 164P/Christensen

Now it is 17.6 mag (Apr. 8, Erik Bryssinck). Fading gradually. In the Northern Hemisphere, it stays observable in good condition. It locates somewhat low in the Southern Hemisphere. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 18  10 28.74   30 38.5   2.582   3.177   117   17.9  20:43 (  0, 85)  
Apr. 25  10 28.90   29 59.4   2.702   3.215   111   18.0  20:16 (  0, 85)

* C/2026 A2 ( Bok )

It will brighten up to 14 mag from autumn to winter. Now it is 17.7 mag (Apr. 7, Alfons Diepvens). Brightening slowly. In the Northern Hemisphere, it stays observable in good condition. In the Southern Hemisphere, it is not observable now. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 18  18 23.57   59 39.5   3.303   3.460    90   18.0   3:55 (193, 64)  
Apr. 25  18 27.70   62  5.4   3.252   3.400    89   17.9   3:45 (188, 63)

* C/2024 J4 ( Lemmon )

Now it is 17.5 mag (Apr. 8, Ken-ichi Kadota). It stays 18 mag for a while. It stays observable in good condition. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 18  14  9.49    6 45.1   5.281   6.240   161   17.9   0:28 (  0, 62)  
Apr. 25  14  2.43    6 43.5   5.305   6.261   160   17.9  23:48 (  0, 62)

* C/2026 C1 ( Tsuchinshan )

It is expected to brighten up to 4 mag in 2028 autumn. Now it is 17.2 mag (Apr. 8, Erik Bryssinck). It stays 18 mag for a while. It stays observable in good condition. At the high light, it is observable in excellent condition in the Southern Hemisphere. In the Northern Hemisphere, it becomes observable after the perihelion passage. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 18  12 23.79    7 32.6   8.587   9.495   153   17.9  22:38 (  0, 62)  
Apr. 25  12 20.75    7 40.5   8.591   9.443   146   17.9  22:07 (  0, 63)

* C/2025 L1 ( ATLAS )

It was expected to brighten up to 13.5 mag. But actually, it is getting diffuse and fading very rapidly. Now it is 17.3 mag (Apr. 8, Toru Yusa). It will fade out rapidly after this. In the Northern Hemisphere, it stays observable in good condition. It stays extremely low in the Southern Hemisphere. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 18  13 30.53   46 43.3   1.368   2.087   122   18.1  23:42 (180, 78)  
Apr. 25  13  2.79   49 57.9   1.507   2.141   115   18.5  22:47 (180, 75)

* 489P/Denning

It had been lost for 113 years. It must have passed the perihelion on Dec. 4. It brightened up to 18 mag in outburst in 2007. It will fade out rapidly after this. It stays observable in good condition. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 18  12 51.85   -5 32.0   1.124   2.113   166   21.4  23:06 (  0, 49)  
Apr. 25  12 47.87   -5 27.1   1.191   2.160   158   21.7  22:34 (  0, 49)

* C/2026 A1 ( MAPS )

Kreutz sungrazer comet discovered furthest from Sun in history. It approached to Sun down to 0.005 a.u. on Apr. 4. It brightened up to 7.7 mag until it set down under the horizon before the perihelion passage (Mar. 29, Chris Wyatt). It brightened up to about -1 mag in the SOHO spacecraft images (Apr. 4, Robert Pickard). However, the comet has disappeared at the perihelion passage. It is appearing in the evening sky again in calculation, however, probably nothing remained. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 18   3 43.31    2 26.5   1.191   0.615    31   24.7  20:04 ( 92,  1)  
Apr. 25   4 25.44    1 59.3   1.386   0.815    35   28.5  20:11 ( 91,  2)

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