Weekly Information about Bright Comets (2026 May 23: South)

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Updated on May 23, 2026
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Best time and the azimuth, altitude (A,h) are at lat. 35 deg in the Southern Hemisphere.
Azimuth indicates 0 for south, 90 for west, 180 for north, 270 for east.

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* C/2025 R3 ( PanSTARRS )

It brightened up to 4.0 mag in late April (Apr. 30, Chris Wyatt). It brightened up to 1.3 mag due to the forward scattering in the SOHO LASCO images (Apr. 25, Mikolaj Kaszczyk). Now it is 6.6 mag (May 17, Mike Olason). Fading rapidly. In the Northern Hemisphere, it is not observable now, but it will appear in September. It locates somewhat low in the Southern Hemisphere. But it will become high in autumn.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  23   6 18.06   -9 55.8   1.237   0.903    45    7.7  18:28 ( 97, 28)  
May  30   6 31.87  -10 25.4   1.458   1.023    44    8.7  18:26 ( 95, 25)  

* 88P/Howell

Now it is 10.9 mag (May 15, Ken Harikae). Fading gradually. 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)  
May  23   0 43.54    1  1.5   1.947   1.532    51   10.3   5:24 (243, 31)  
May  30   1  0.13    2 45.0   1.942   1.567    53   10.5   5:28 (238, 33)  

* 10P/Tempel 2

It is expected to brighten up to 8 mag in summer. Now it is 13.1 mag (May 13, Osamu Miyazaki). Brightening rapidly. It stays observable in good condition.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  23  19 53.70   -8  7.7   0.813   1.598   121   11.3   3:53 (180, 63)  
May  30  20  6.73   -8  9.8   0.745   1.567   125   10.8   3:38 (180, 63)  

* 78P/Gehrels 2

It will brighten up to 12 mag in summer. It stays 12 mag for a while. In the Northern Hemisphere, it is not observable now, but it will appear in June. It stays extremely low in the Southern Hemisphere. But it will become high in autumn.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  23   2 30.42   14 54.0   2.931   2.023    21   12.6   5:24 (250,  2)  
May  30   2 47.08   15 57.6   2.899   2.016    24   12.5   5:28 (247,  4)  

* 141P/Machholz 2

The condition is very bad in this apparition. It is not observable at all. It will fade out rapidly after this. 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)  
May  23   4 42.86   19 42.4   1.917   0.940    10   12.9  18:28 (108, -9)  
May  30   5 16.75   19 29.0   1.968   1.000    12   13.2  18:26 (109, -7)  

* C/2023 R1 ( PanSTARRS )

Now it is 13.0 mag (May 19, Osamu Miyazaki). Fading slowly. It stays observable in good condition.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  23  18 24.00   -5 17.6   2.741   3.588   141   13.4   2:24 (180, 60)  
May  30  18  8.44   -5 50.8   2.677   3.595   150   13.4   1:41 (180, 61)  

* 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 August. In the Southern Hemisphere, it will be getting higher gradually. 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)  
May  23   4  1.81  -17 32.5   5.626   4.868    38   13.9  18:28 ( 72,  4)  
May  30   4  8.81  -16 48.8   5.582   4.833    38   13.8   5:28 (285,  7)  

* C/2024 J3 ( ATLAS )

Now it is 14.1 mag (May 19, Toru Yusa). It stays 14 mag for a while. 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)  
May  23  20 20.91   26 11.7   3.879   4.191   100   13.9   4:20 (180, 29)  
May  30  20 18.19   28 21.1   3.791   4.168   104   13.8   3:50 (180, 27)  

* 29P/Schwassmann-Wachmann 1

Now it is 13.0 mag (May 17, Yoshiaki Yamaguchi). It will be getting lower gradually after this, and it will be unobservable in August in the Northern Hemisphere, or in September in the Southern Hemisphere.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  23  10 59.39   -0 51.9   5.981   6.315   104   13.9  18:56 (180, 56)  
May  30  11  0.23   -0 52.7   6.090   6.315    98   13.9  18:29 (180, 56)  

* 235P/LINEAR

It became brighter than expected. Now it is 14.3 mag (May 19, Toru Yusa). It will fade out rapidly after this. It will be fainter than 18 mag in August. It stays observable in good condition.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  23  17  4.72   -9 38.4   1.318   2.297   160   14.2   1:05 (180, 65)  
May  30  16 59.36   -9  3.0   1.329   2.323   165   14.4   0:32 (180, 64)  

* 24P/Schaumasse

It brightened up to 8.4 mag in January (Jan. 14, Mitsunori Tsumura). Now it is 13.7 mag (May 19, Toru Yusa). 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)  
May  23  14 20.34   -2  3.9   1.080   2.021   149   14.6  22:16 (180, 57)  
May  30  14 17.30   -3 13.0   1.175   2.081   143   15.0  21:46 (180, 58)  

* C/2014 UN271 ( Bernardinelli-Bernstein )

Very large comet. It is expected to brighten up to 13 mag in 2031. Now it is 14.5 mag (Apr. 25, 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)  
May  23   5 37.89  -68 20.2  13.912  13.961    90   14.7  18:28 ( 27, 38)  
May  30   5 44.53  -68 11.6  13.884  13.939    91   14.7  18:26 ( 27, 36)  

* 63P/Wild 1

Now it is 14.7 mag (May 13, Katsumi Yoshimoto). It stays 15 mag for a while. It will be unobservable in August in the Northern Hemisphere, or in September in the Southern Hemisphere.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  23   8 25.50   28 13.0   2.313   2.022    60   15.1  18:28 (151, 20)  
May  30   8 40.38   26 20.4   2.358   2.008    57   15.0  18:26 (148, 21)  

* C/2022 QE78 ( ATLAS )

Now it is 15.2 mag (May 18, Toru Yusa). It stays 15 mag for a while. It will be unobservable in July in the Southern Hemisphere, or in August in the Northern Hemisphere. But it will be observable again in September in the Northern Hemisphere.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  23   9 19.09   31 34.5   6.021   5.781    71   15.0  18:28 (164, 21)  
May  30   9 23.49   31 22.7   6.135   5.797    66   15.1  18:26 (159, 20)  

* C/2021 G2 ( ATLAS )

Now it is 15.3 mag (May 17, Toru Yusa). 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)  
May  23  17 21.05   14 18.6   6.005   6.808   139   15.2   1:21 (180, 41)  
May  30  17 18.38   14 49.0   6.022   6.842   141   15.2   0:50 (180, 40)  

* C/2022 N2 ( PanSTARRS )

Now it is 15.8 mag (May 7, Ken-ichi Kadota). It stays 16 mag for a while. Now it is not observable. It will appear 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)  
May  23   5 14.07   26 49.0   5.549   4.601    18   15.3  18:28 (118, -7)  
May  30   5 22.72   26 54.1   5.611   4.634    13   15.4  18:26 (116,-10)  

* C/2024 R4 ( PanSTARRS )

Now it is 15.5 mag (May 22, ATLAS-MLO, Mauna Loa). 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)  
May  23  22 14.18   37 18.9   6.242   6.052    74   15.5   5:24 (190, 17)  
May  30  22 12.86   38 37.8   6.125   6.016    79   15.4   5:28 (183, 16)  

* 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)  
May  23   4  2.61   28 30.1   2.698   1.701     8   15.6  18:28 (111,-21)  
May  30   4 25.03   29 25.2   2.711   1.712     7   15.7   5:28 (248,-22)  

* 260P/McNaught

It will brighten up to 13 mag and will be observable in good condition from summer to autumn. Now it is 16.9 mag (May 4, ATLAS South Africa). It will brighten rapidly after this. 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)  
May  23  23 50.39   -8 59.6   1.729   1.636    67   16.1   5:24 (241, 48)  
May  30   0  8.42   -6 15.7   1.654   1.600    68   15.7   5:28 (234, 48)  

* 123P/West-Hartley

It will brighten up to 15 mag from autumn to winter. Now it is 16.8 mag (Apr. 16, Erik Bryssinck). It stays 15 mag for a while. In the Northern Hemisphere, it will be unobservable in June. But it will be observable again in September. In the Southern Hemisphere, it is not observable now.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  23   6 12.69   33 20.5   3.142   2.353    32   15.9  18:28 (131, -1)  
May  30   6 28.85   33 16.7   3.161   2.332    29   15.8  18:26 (130, -2)  

* C/2025 A6 ( Lemmon )

It brightened up to 3.7 mag in late October (Oct. 26, Juan Jose Gonzalez). Now it is 16.0 mag (May 19, Andrew Pearce). It will fade out rapidly after this. It will be fainter than 18 mag in July. 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)  
May  23  10 48.51  -42  7.1   2.717   3.246   112   15.9  18:45 (  0, 83)  
May  30  10 46.95  -39 49.8   2.883   3.332   107   16.3  18:26 ( 22, 85)  

* P/2021 N1 ( ZTF )

First return of a new periodic comet which brightened up to 17 mag in 2021. It will approach to Earth down to 0.17 a.u. from June to July. It is expected to brighten up to 14 mag. Brightening gradually. 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)  
May  23  19 12.53  -51 25.4   0.417   1.325   131   16.8   3:11 (  0, 74)  
May  30  19 53.66  -51 58.0   0.347   1.266   130   16.2   3:24 (  0, 73)  

* C/2025 Y1 ( ATLAS )

Now it is 16.3 mag (May 19, Hirohisa Sato). It stays 16 mag for a while. 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)  
May  23  12 41.53    4 33.8   4.920   5.573   125   16.4  20:38 (180, 51)  
May  30  12 40.40    4 39.8   4.959   5.520   118   16.4  20:09 (180, 50)  

* C/2024 G6 ( ATLAS )

Now it is 16.4 mag (May 8, D. Buczynski). 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)  
May  23  15 50.54   11 50.2   5.582   6.460   147   16.4  23:46 (180, 43)  
May  30  15 44.70   12 37.9   5.615   6.465   144   16.5  23:13 (180, 42)  

* C/2022 R6 ( PanSTARRS )

Now it is 16.6 mag (May 7, Ken-ichi Kadota). It stays 17 mag for a while. It will be unobservable in June in the Northern Hemisphere, or in August in the Southern Hemisphere. But it will be observable again in September.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  23   8 42.57    3  0.9   7.066   6.810    71   16.6  18:28 (140, 44)  
May  30   8 45.84    3 26.7   7.180   6.822    65   16.6  18:26 (135, 41)  

* 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 17.1 mag (May 8, Alfons Diepvens). It will fade out rapidly after this. It will be fainter than 18 mag in July. It locates somewhat low in the Northern Hemisphere. In the Southern Hemisphere, it will be unobservable in June.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  23   6 57.75   35 54.3   3.085   2.431    42   16.9  18:28 (139,  4)  
May  30   7 13.75   35 47.5   3.160   2.457    39   17.1  18:26 (138,  2)  

* 218P/LINEAR

Now it is 16.3 mag (Apr. 5, ATLAS-MLO, Mauna Loa). 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)  
May  23  23  3.65   -3 33.4   1.374   1.495    75   17.0   5:24 (221, 51)  
May  30  23 15.10   -2 24.7   1.368   1.548    79   17.3   5:28 (213, 53)  

* 65P/Gunn

Now it is 16.9 mag (Nov. 20, Thomas Lehmann). It stays 17 mag for a while. 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)  
May  23   0 11.73   -7 35.2   3.694   3.344    62   17.1   5:24 (244, 43)  
May  30   0 18.61   -7  1.0   3.621   3.358    67   17.1   5:28 (238, 47)  

* 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)  
May  23  20 22.08    4 12.6   4.475   4.925   110   17.2   4:21 (180, 51)  
May  30  20 22.70    4 17.1   4.393   4.930   116   17.1   3:54 (180, 51)  

* C/2025 E1 ( PanSTARRS )

Now it is 17.0 mag (Apr. 28, ATLAS South Africa). 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)  
May  23   8 32.13  -64  4.0   3.847   4.136    99   17.2  18:28 ( 23, 56)  
May  30   8 32.77  -63 31.9   3.861   4.121    97   17.2  18:26 ( 26, 54)  

* C/2025 M2 ( PanSTARRS )

It is expected to brighten up to 12 mag from 2027 to 2028. Now it is 17.1 mag (May 17, ATLAS-MLO, Mauna Loa). Brightening slowly. It stays observable in good condition.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  23  20 58.66  -16 47.5   5.459   5.870   109   17.4   4:58 (180, 72)  
May  30  20 54.97  -16 58.5   5.290   5.819   116   17.3   4:27 (180, 72)  

* C/2023 X2 ( Lemmon )

Now it is 17.5 mag (Apr. 29, 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)  
May  23  13 53.24   86 25.4   5.420   5.208    72   17.3  21:43 (180,-31)  
May  30  13 29.24   85  0.8   5.444   5.219    71   17.3  20:55 (180,-30)  

* C/2022 E2 ( ATLAS )

It was observed at 12-13 mag for a long time in 2024. Now it is 17.2 mag (May 17, ATLAS-HKO, Haleakala). It stays 18 mag for a while. 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)  
May  23  23 14.74   30 54.3   6.746   6.361    63   17.3   5:24 (205, 19)  
May  30  23 14.18   31 13.0   6.696   6.404    69   17.3   5:28 (198, 21)  

* C/2026 A2 ( Bok )

It will brighten up to 14 mag from autumn to winter. Now it is 17.1 mag (May 22, ATLAS-MLO, Mauna Loa). Brightening gradually. 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)  
May  23  18 29.42   71  2.4   3.086   3.160    84   17.4   2:27 (180,-16)  
May  30  18 24.31   72 56.4   3.050   3.100    83   17.3   1:55 (180,-18)  

* 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 stays observable in good condition.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  23   0 40.99  -42 21.6  11.585  11.408    77   17.4   5:24 (296, 52)  
May  30   0 42.11  -42 24.3  11.516  11.423    82   17.4   5:28 (295, 57)  

* C/2023 F3 ( ATLAS )

Now it is 17.0 mag (Apr. 25, Andrew Pearce). It stays 18 mag for a while. In the Northern Hemisphere, it will be unobservable in June. In the Southern Hemisphere, it will be getting lower gradually.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  23   8 59.63   -7  0.0   6.388   6.274    79   17.5  18:28 (138, 55)  
May  30   8 59.81   -6 19.5   6.531   6.303    72   17.6  18:26 (130, 51)  

* C/2025 V2 ( Rankin )

It is expected to brighten up to 12.5 mag in 2027 spring. Now it is 17.4 mag (May 10, Ken-ichi Kadota). Brightening slowly. It will be unobservable in August.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  23   9 12.63   23 24.8   4.140   3.949    72   17.5  18:28 (159, 29)  
May  30   9 17.20   23 25.0   4.180   3.888    66   17.5  18:26 (154, 27)  

* C/2023 H5 ( Lemmon )

Now it is 17.5 mag (May 9, Ken-ichi Kadota). 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)  
May  23  22 15.92   65 26.3   5.334   5.070    69   17.6   5:24 (185,-11)  
May  30  22 16.19   65 55.8   5.334   5.100    71   17.7   5:28 (182,-11)  

* 195P/Hill

Now it is 17.4 mag (May 21, ATLAS South Africa). It stays 18 mag for a while. It stays extremely low in the Northern Hemisphere. In the Southern Hemisphere, it stays observable in good condition.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  23   9 34.02  -24 32.2   4.459   4.629    93   17.7  18:28 (126, 74)  
May  30   9 38.66  -23 59.9   4.550   4.637    88   17.8  18:26 (118, 70)  

* C/2024 A1 ( ATLAS )

Now it is 17.5 mag (May 9, Alfons Diepvens). It stays 18 mag for a while. 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)  
May  23   6 49.63   63 51.5   5.422   4.865    51   17.8  18:28 (158,-18)  
May  30   6 58.20   64  2.1   5.501   4.900    49   17.8  18:26 (156,-19)  

* 40P/Vaisala 1

It became brighter than expected, brightened up to 14.3 mag (Jan. 21, Michael Jager). Now it is 16.9 mag (May 12, ATLAS-MLO, Mauna Loa). It will fade out rapidly after this. 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)  
May  23  17 51.44   -9  6.1   1.656   2.585   150   17.8   1:51 (180, 64)  
May  30  17 46.13   -9 16.1   1.664   2.628   157   17.9   1:19 (180, 64)  

* 169P/NEAT

It will approach to Earth down to 0.17 a.u. in August. It is expected to brighten up to 10 mag from August to September. Now it is 17.7 mag (May 18, A. Maury, G. Attard, F. Signoret, D. Parrott). It will brighten rapidly after this. It will be getting lower gradually after this, and it will be unobservable in August. But it will be observable again in in the Northern Hemisphere, or in September in the Southern Hemisphere.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  23  19 33.57   -2 26.4   1.147   1.911   124   18.2   3:33 (180, 57)  
May  30  19 35.85   -0 45.7   1.020   1.837   129   17.8   3:08 (180, 56)  

* C/2026 C1 ( Tsuchinshan )

It is expected to brighten up to 4 mag in 2028 autumn. Now it is 17.3 mag (May 18, Alfons Diepvens). It stays 18 mag for a while. It will be getting lower gradually after this, and it will be unobservable in August in the Northern Hemisphere, or in September in the Southern Hemisphere. 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)  
May  23  12 10.76    7 50.5   8.723   9.234   117   17.9  20:07 (180, 47)  
May  30  12  8.98    7 47.2   8.778   9.182   110   17.8  19:38 (180, 47)  

* 220P/McNaught

Now it is 17.6 mag (May 20, ATLAS Chile). It stays 18 mag for a while. 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)  
May  23  23 34.16   -0 53.3   1.646   1.574    67   18.0   5:24 (228, 45)  
May  30  23 53.37    0 36.0   1.600   1.566    69   17.9   5:28 (224, 45)  

* 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. Fading gradually. 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)  
May  23  12 44.66   -6  3.5   1.556   2.349   131   22.8  20:41 (180, 61)  
May  30  12 46.87   -6 26.5   1.667   2.397   125   23.0  20:16 (180, 62)  

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