Weekly Information about Bright Comets (2022 May 28: South)

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 Updated on May 28, 2022
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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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* 45P/Honda-Mrkos-Pajdusakova

Appearing in the evening sky. Now it is very bright as 8.2 mag (May 25, Mike Olason). It is brighter than originally predicted by 3 mag. The condition is very bad in this apparition. It is observable only in the extremely low sky from mid May to mid July in the Northern Hemisphere, or from early June to early August in the Southern Hemisphere. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  28   6 20.01   24 53.5   1.570   0.829    28    9.1  18:27 (123,  3)  
June  4   7  2.75   24 34.7   1.629   0.925    31   10.2  18:25 (126,  6)

* C/2017 K2 ( PanSTARRS )

Now it is bright as 9.9 mag (May 23, Osamu Miyazaki). The brightness evolution is slower than originally expected. It is expected to be observable at 7.5-8 mag for a long time from 2022 to 2023. In the Northern Hemisphere, it stays observable in good condition until autumn. However, it is not observable at the high light from autumn to 2023 summer. In the Southern Hemisphere, it stays observable in good condition for a long time. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  28  18 27.53   10  2.1   2.263   3.068   135    9.4   2:08 (180, 45)  
June  4  18 17.44    9  1.4   2.144   3.005   141    9.2   1:30 (180, 46)

* C/2021 E3 ( ZTF )

Now it is very bright as 9.8 mag (May 6, Marco Goiato). It stays bright as 9-10 mag from spring to summer. In the Southen Hemisphere, it stays observable in good condition for a long time after this. In the Northern Hemisphere, it is not observable until November when it fades down to 14 mag. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  28  23 30.63  -74 40.0   1.221   1.788   105    9.3   5:27 (350, 49)  
June  4   2 15.87  -81 16.8   1.219   1.780   105    9.3   5:30 (350, 39)

* C/2019 L3 ( ATLAS )

Now it is 10.0 mag (May 24, Osamu Miyazaki). It will be getting lower after this. In the Northern Hemisphere, it will be unobservable soon. In the Southern Hemisphere, it stays observable until July. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  28   7 28.59    9 29.1   4.384   3.770    47   10.8  18:27 (123, 25)  
June  4   7 35.62    8 35.3   4.473   3.792    42   10.9  18:25 (119, 22)

* C/2021 P4 ( ATLAS )

Now it is bright as 12.0 mag (May 18, Michael Jager). It is expected to brighten up to 9-10 mag in summer. In the Northern Hemisphere, it stays observable in good condition until June when it brightens up to 10 mag. But it is not observable after the high light. In the Souther Hemisphere, it is not observable until October. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  28   6  0.91   55 50.5   2.118   1.482    39   11.4  18:27 (146,-19)  
June  4   6 38.47   53 14.8   2.074   1.411    37   11.1  18:25 (144,-16)

* 22P/Kopff

Now it is 11.1 mag (May 21, Thomas Lehmann). In the Northern Hemisphere, it stays extremely low until spring. In the Southern Hemisphere, it stays observable at 11 mag until June. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  28  23 59.64   -2  5.9   1.822   1.709    67   11.5   5:27 (230, 45)  
June  4   0 13.92   -0 53.9   1.795   1.738    70   11.6   5:30 (224, 47)

* C/2019 T4 ( ATLAS )

Now it is bright as 11.7 mag (May 24, Osamu Miyazaki). It stays observable at 11-12 mag until July. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  28  11 47.24   -9 20.4   3.728   4.244   114   11.7  19:24 (180, 64)  
June  4  11 49.62   -8 14.4   3.824   4.243   107   11.7  18:59 (180, 63)

* C/2021 F1 ( Lemmon-PanSTARRS )

It brightened very rapidly up to 9.3 mag in March (Mar. 24, Michael Jager). In the Southern Hemisphere, it is appearing in the morning sky. It stays observable in good condition after this. In the Northern Hemisphere, it will never be observable again. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  28   2 44.20   -0  9.9   2.066   1.313    31   11.9   5:27 (261, 13)  
June  4   2 55.77   -3 42.4   2.046   1.388    37   12.4   5:30 (261, 19)

* 9P/Tempel 1

Now it is 13.2 mag (May 4, Thomas Lehmann). It stays 12-13 mag for a while. It is observable in excellent condition in the Southern Hemisphere. It locates somewhat low in the Northern Hemisphere. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  28  22 31.69  -20  6.7   1.348   1.745    94   12.8   5:27 (216, 72)  
June  4  22 42.71  -20  6.2   1.317   1.776    98   12.9   5:30 (201, 74)

* C/2020 R7 ( ATLAS )

Now it is 13.7 mag (May 14, Giuseppe Pappa). It will brighten up to 12.5 mag in summer. In the Southern Hemisphere, it stays observable in excellent condition for a long time. In the Northern Hemisphere, it is not observable until August. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  28  22 15.80  -59 47.9   2.683   3.156   108   13.1   5:27 (351, 65)  
June  4  21 58.58  -61 14.5   2.563   3.133   115   13.0   5:11 (  0, 64)

* 19P/Borrelly

It brightened up to 8.8 mag from winter to early spring (Jan. 31, Chris Wyatt). Now it is fading. It has already faded down to 13.4 mag (May 14, ATLAS-MLO, Mauna Loa). It locates extremely low in the Southern Hemisphere. It will be unobservable in August in the Northern Hemisphere. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  28   7 55.67   42 11.7   2.333   1.848    49   13.2  18:27 (150,  3)  
June  4   8 18.88   41 25.1   2.421   1.899    48   13.5  18:25 (149,  4)

* 117P/Helin-Roman-Alu 1

Now it is 14.2 mag (May 4, Thomas Lehmann). It will brighten up to 13 mag in summer. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  28  19  8.72  -29 22.8   2.193   3.046   140   13.4   2:49 (180, 84)  
June  4  19  6.44  -29 52.4   2.137   3.044   147   13.4   2:19 (180, 85)

* C/2020 Y2 ( ATLAS )

Now it is 14.9 mag (May 6, Chris Wyatt). It was expected to brighten up to 13 mag in spring. But actually, it is fainter than this ephemeris recently. In the Southern Hemisphere, it stays observable in good condition for a long time. In the Northern Hemisphere, it is not observable until autumn. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  28   6 29.85  -43 57.6   3.301   3.139    71   13.6  18:27 ( 59, 40)  
June  4   6 31.27  -42 37.4   3.346   3.135    69   13.6  18:25 ( 59, 36)

* C/2020 V2 ( ZTF )

Now it is 13.4 mag (May 18, Masayoshi Yoshimi). It is expected to brighten up to 10 mag in 2023. In the Northern Hemisphere, it stays observable in good condition until 2023 autumn. In the Southern Hemipshere, it stays unobservable until 2023 summer. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  28   9 59.25   58 46.5   4.553   4.303    69   13.6  18:27 (173, -4)  
June  4   9 55.59   58  3.8   4.583   4.246    64   13.6  18:25 (170, -4)

* C/2020 K1 ( PanSTARRS )

Now it is 14.3 mag (May 6, Chris Wyatt). It is expected to brighten up to 11 mag in 2023. In the Northern Hemisphere, it stays observable in good condition until November. But it becomes unobservable after that. In the Southern Hemisphere, it stays observable in good condition after this. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  28  18 43.01   18 37.0   3.807   4.485   126   13.7   2:23 (180, 36)  
June  4  18 36.80   18 13.1   3.704   4.440   131   13.6   1:49 (180, 37)

* C/2021 A1 ( Leonard )

It brightened up to 3 mag from mid December to late December. Now it is fading. It has already faded down to 12.2 mag (Apr. 2, Thomas Lehmann). It is observable in good condition in the Southern Hemisphere. It is getting observable again also in the Northern Hemisphere. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  28  18 35.21  -38 46.5   1.655   2.558   145   13.7   2:16 (  0, 86)  
June  4  18  7.34  -37 55.3   1.688   2.650   156   13.9   1:21 (  0, 87)

* C/2019 U5 ( PanSTARRS )

Now it is 13.8 mag (May 4, Hirohisa Sato). It is expected to brighten up to 12 mag in 2023. In the Northern Hemisphere, it stays observable in good condition for a long time. In the Southern Hemisphere, it locates extremely low in 2022, but it will be observable in good condition in 2023. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  28  14 33.26   42 27.4   4.050   4.524   111   13.7  22:08 (180, 13)  
June  4  14 21.13   41 30.8   4.074   4.489   107   13.7  21:29 (180, 14)

* 116P/Wild 4

Now it is 13.8 mag (May 6, Chris Wyatt). It is observable at 13 mag in good condition until early summer. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  28  10 10.07   12 59.3   2.099   2.225    83   13.8  18:27 (167, 41)  
June  4  10 19.77   11 52.4   2.168   2.218    79   13.8  18:25 (162, 41)

* C/2021 T2 ( Fuls )

It is expected to brighten up to 13.5 mag in early summer. In the Southern Hemisphere, it is appearing in the morning sky. It stays observable in good condition after this. In the Northern Hemisphere, it is not observable at all. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  28   3  8.35  -23 15.4   1.693   1.259    47   14.1   5:27 (284, 21)  
June  4   3 28.03  -27 32.3   1.552   1.249    53   13.9   5:30 (287, 25)

* 29P/Schwassmann-Wachmann 1

Now it is not observable. It will be observable again in August. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  28   5 20.57   29 12.2   6.956   5.989    16   14.0  18:27 (118,-10)  
June  4   5 26.79   29 13.4   6.983   5.991    11   14.1  18:25 (116,-14)

* C/2022 E3 ( ZTF )

Now it is 14.9 mag (May 18, ATLAS-HKO, Haleakala). It will approach to Earth down to 0.29 a.u. in 2023 February, and it is expected to brighten up to 5 mag. In the Northern Hemisphere, it stays observable in excellent condition. In the Southern Hemisphere, it becomes unobservable from late September to early February. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  28  19 58.90   21  9.4   2.861   3.364   111   14.6   3:38 (180, 34)  
June  4  19 51.17   23 24.5   2.716   3.288   115   14.3   3:03 (180, 32)

* C/2021 O3 ( PanSTARRS )

It was expected to brighten up to 4 mag, but it faded rapidly around the perihelion passage. Now it is 12.9 mag (May 18, Michael Jager). It stays observable in good condition after this while the comet will be fading. In the Southern Hemisphere, it is not observable until August. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  28   9 11.80   81 36.1   0.803   1.011    66   14.6  18:27 (177,-27)  
June  4  12 23.28   78 13.0   0.920   1.151    72   15.6  19:39 (180,-23)

* 73P/Schwassmann-Wachmann 3

Now it is 15.3 mag (May 18, Michael Jager). It is expected to brighten up to 11-12 mag from summer to autumn. It stays observable in good condition in the Southern Hemisphere. In the Northern Hemisphere, it becomes extremely low from August to September. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  28  10  1.66   24  7.1   1.398   1.545    77   15.1  18:27 (167, 30)  
June  4  10 11.11   22 24.6   1.396   1.481    73   14.8  18:25 (163, 31)

* C/2018 U1 ( Lemmon )

Now it is 15.7 mag (May 1, Thomas Lehmann). It stays at 15-16 mag for a long time. In the Southern Hemisphere, it stays observable in excellent condition for a long time. In the Northern Hemiphere, it locates extremely low in spring. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  28  15 52.02  -50 24.9   4.331   5.237   150   14.9  23:28 (  0, 74)  
June  4  15 39.14  -50 44.2   4.360   5.253   148   14.9  22:47 (  0, 74)

* 169P/NEAT

Now it is 17.6 mag (May 10, W. Hasubick). It will brighten rapidly, and it will brighten up to 12 mag from June to July. It stays observable in the morning sky until June. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  28   0 28.20   10 59.3   1.074   0.979    55   15.8   5:27 (227, 30)  
June  4   1 13.37   13 59.3   1.051   0.891    51   14.9   5:30 (228, 26)

* (3200) Phaethon

It approached to Sun down to 0.14 a.u. on May 15. But it was not observable around that time. In the Northern Hemisphere, it will appear in the morning sky at 16 mag in June. It is hardly observable in the Southern Hemisphere. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  28   2 38.71   24 25.4   1.178   0.466    23   15.1   5:27 (240, -1)  
June  4   2 46.04   26 59.3   1.323   0.635    27   15.7   5:30 (235,  2)

* 81P/Wild 2

Now it is not observable. It will appear in the morning sky in September in the Northern Hemisphere, or in November in the Southern Hemisphere. It will brighten up to 11.5 mag in winter 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  28   5 26.56   21 30.3   3.393   2.435    15   15.5  18:27 (113, -5)  
June  4   5 40.26   21 43.3   3.374   2.394    12   15.4  18:25 (111, -7)

* C/2020 J1 ( SONEAR )

It brightened up to 12.3 mag from spring to summer in 2021 (June 15, 2021, Marco Goiato). Now it is fading. It has already faded down to 15.2 mag (May 21, Thomas Lehmann). 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  28  12 13.99   31 53.6   4.662   4.956   100   15.5  19:50 (180, 23)  
June  4  12  9.50   31 51.4   4.818   4.999    94   15.7  19:19 (180, 23)

* 104P/Kowal 2

It brightened very rapidly up to 9.2 mag in winter (Jan. 31, Chris Wyatt). Now it is fading. It has already faded down to 14.7 mag (May 3, Chris Wyatt). It will be fainter than 18 mag in July. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  28   9 34.35   10 57.1   1.947   1.965    75   15.6  18:27 (156, 41)  
June  4   9 48.99   10  0.9   2.073   2.024    72   16.0  18:25 (152, 41)

* C/2020 H6 ( ATLAS )

Now it is 15.9 mag (May 15, Thomas Lehmann). It stays observable at 16 mag from 2021 to 2022. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  28  15 48.03   41 47.2   4.533   5.066   116   16.0  23:23 (180, 13)  
June  4  15 43.10   42 24.3   4.595   5.087   113   16.0  22:51 (180, 13)

* 152P/Helin-Lawrence

Now it is 17.2 mag (May 4, Ken-ichi Kadota). It will brighten up to 16 mag from spring to summer. It locates somewhat low in the Northern Hemisphere. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  28  19 59.53  -23  9.2   2.442   3.179   129   16.3   3:39 (180, 78)  
June  4  19 59.01  -23 33.9   2.380   3.188   135   16.2   3:11 (180, 78)

* 325P/Yang-Gao

Now it is 17.9 mag (May 11, Giuseppe Pappa). It was expected to be observable at 16 mag in good condition in spring. But actually, it is fainter than predicted by 2-3 mag. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  28  21 13.12   -4 11.4   0.949   1.574   106   16.3   4:52 (180, 59)  
June  4  21 17.87   -1 23.6   0.933   1.606   110   16.4   4:29 (180, 56)

* C/2020 M5 ( ATLAS )

It became brighter after the perihelion passage, and it brightened up to 13.4 mag in early 2022 (Jan. 7, Hiroshi Abe). Now it is fading. It has already faded down to 15.8 mag (May 13, Giuseppe Pappa). It will be fainter than 18 mag in summer. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  28  10 23.91    1 53.7   3.904   4.045    90   16.4  18:27 (169, 53)  
June  4  10 23.19    1  6.1   4.065   4.089    84   16.5  18:25 (158, 52)

* 67P/Churyumov-Gerasimenko

It brightened up to 8.5 mag from autumn to winter in 2021 (Dec. 2, Toshihiko Ikemura, Hirohisa Sato). Now it is fading. It has already faded down to 15.9 mag (May 4, Catalina Sky Survey). It stays observable in good condition for a long time. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  28   9 50.72   16  8.3   2.539   2.531    78   16.4  18:27 (162, 37)  
June  4   9 59.89   15 10.2   2.676   2.583    73   16.6  18:25 (157, 37)

* 246P/NEAT

It brightened up to 14 mag from 2020 to 2021. Now it is fading slowly. It is observable at 16.5-17 mag in 2022. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  28   0 19.55  -14  7.4   3.907   3.658    68   16.6   5:27 (248, 50)  
June  4   0 25.63  -13 53.4   3.833   3.676    73   16.6   5:30 (241, 54)

* C/2020 F5 ( MASTER )

It brightened up to 14 mag in 2021. Now it is fading. It has already faded down to 16.3 mag (May 21, Thomas Lehmann). It is observable at 16-17 mag in 2022. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  28   0  7.35    6 28.8   5.951   5.551    62   16.6   5:27 (225, 37)  
June  4   0  9.47    7 20.5   5.884   5.585    68   16.6   5:30 (217, 40)

* C/2020 O2 ( Amaral )

Now it is 16.6 mag (May 8, C. Bell). It was observed at 15 mag in 2021. Now it is fading. It stays observable at 16-17 mag for a while in 2022. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  28  18 34.99   24 56.4   4.681   5.301   122   16.6   2:15 (180, 30)  
June  4  18 30.83   26  9.2   4.671   5.322   125   16.7   1:43 (180, 29)

* C/2021 U5 ( Catalina )

It continued brightening even after the perihelion passage, and it brightened up to 15.2 mag (Feb. 16, Ken-ichi Kadota). Now it is fading. It has already faded down to 17.5 mag (May 1, Catalina Sky Survey). It will be fainter than 18 mag in July. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  28  11  4.78    8 47.1   2.388   2.714    97   16.7  18:42 (180, 46)  
June  4  11 12.93    9 19.6   2.514   2.751    92   16.9  18:25 (179, 46)

* C/2019 F1 ( ATLAS-Africano )

It brightened up to 14.2 mag in 2021 summer (July 18, 2021, Taras Prystavski). Now it is fading. It has already faded down to 16.2 mag (Jan. 27, SONEAR Observatory, Oliveira). In the Southern Hemisphere, it stays observable in good condition for a long time, although it became extremely low temporarily from March to April. In the Northern Hemisphere, it is not observable until July. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  28   1 53.69  -26 28.3   5.122   4.685    59   16.8   5:27 (279, 37)  
June  4   1 58.73  -26  1.2   5.093   4.723    63   16.8   5:30 (275, 42)

* 61P/Shajn-Schaldach

Now it is 19.3 mag (May 6, iTelescope Observatory, Siding Spring). It is expected to brighten up to 15 mag in autumn, and it will be observable in good condition. But it is fainter than this ephemeris. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  28  23 44.30   -0 36.2   2.546   2.400    70   17.0   5:27 (225, 46)  
June  4  23 55.25    0 23.1   2.447   2.377    74   16.9   5:30 (218, 48)

* C/2020 T2 ( Palomar )

It brightened up to 9.5 mag in early summer in 2021 (June 27, Marco Goiato). Now it is fading. It has already faded down to 17.0 mag (May 7, ATLAS Chile). In the Northern Hemisphere, it is not observable until June. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  28  23 12.62  -32 11.1   3.946   4.081    90   16.9   5:27 (267, 72)  
June  4  23 16.61  -32 43.6   3.910   4.141    95   17.0   5:30 (263, 78)

* C/2020 F2 ( ATLAS )

Now it is 16.8 mag (May 1, Catalina Sky Survey). It stays observable at 17-18 mag for a long time until 2024. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  28  13 36.31    3 39.7   8.097   8.822   133   17.0  21:13 (180, 51)  
June  4  13 32.70    3 57.3   8.188   8.820   125   17.0  20:41 (180, 51)

* 44P/Reinmuth 2

Appearing in the morning sky. It will be observable at 16.5 mag in good condition from summer to autumn. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  28   1  1.26   11 21.3   2.669   2.129    48   17.0   5:27 (234, 25)  
June  4   1 14.67   12 53.0   2.622   2.137    51   17.0   5:30 (229, 27)

* C/2021 G2 ( ATLAS )

Now it is 16.9 mag (May 3, ATLAS Chile). It will brighten up to 13-14 mag from 2024 to 2025. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  28   7 29.93  -24 30.9   8.263   7.896    65   17.1  18:27 ( 90, 46)  
June  4   7 33.86  -24 16.8   8.286   7.859    61   17.0  18:25 ( 87, 41)

* C/2019 O3 ( Palomar )

Now it is 16.5 mag (May 3, V. Nevski). Fading slowly. In the Northern Hemisphere, it stays observable in good condition for a long time. In the Southern Hemisphere, it is not observable after this. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  28  19  0.76   65 47.7   9.176   9.188    87   17.1   2:40 (180,-11)  
June  4  18 53.63   66 31.7   9.180   9.200    87   17.2   2:05 (180,-12)

* 99P/Kowal 1

Now it is 16.6 mag (May 2, Purple Mountain Observatory). It stays 17 mag for a while. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  28  13  9.19   -7 19.5   3.966   4.709   132   17.2  20:46 (180, 62)  
June  4  13  8.29   -7 18.3   4.049   4.710   125   17.2  20:17 (180, 62)

* C/2022 A2 ( PanSTARRS )

Now it is 17.6 mag (May 13, Giuseppe Pappa). It is expected to brighten up to 12.5 mag in winter. It will become unobservable temporarily at 17 mag in July. In the Northern Hemisphere, it will become observable again in October. Then it stays observable in good condition after that. In the Southern Hemisphere, it is not observable at the high light. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  28  10 27.22    5 30.3   3.469   3.616    90   17.3  18:27 (171, 49)  
June  4  10 27.00    6 42.1   3.531   3.552    82   17.2  18:25 (162, 47)

* C/2020 F7 ( Lemmon )

Now it is 17.8 mag (Apr. 22, ATLAS Chile). It stays 17 mag for a long time from 2021 to 2022. In the Southern Hemisphere, it stays observable in good condition for a long time. It is not observable in the Northern Hemisphere. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  28   6 47.57  -40 58.2   5.764   5.524    71   17.4  18:27 ( 64, 43)  
June  4   6 50.46  -40 59.6   5.809   5.537    69   17.4  18:25 ( 62, 39)

* 100P/Hartley 1

Now it is 17.9 mag (May 18, Yasukazu Ikari). It is observable at 17 mag from spring to summer. In the Northern Hemisphere, it becomes low in summer. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  28  11 19.68   19 45.5   1.730   2.099    96   17.6  18:57 (180, 36)  
June  4  11 24.78   17 16.2   1.788   2.085    91   17.5  18:35 (180, 38)

* C/2021 C5 ( PanSTARRS )

Now it is 17.6 mag (May 3, ATLAS Chile). It will brighten up to 16 mag in 2023. In the Southern Hemisphere, it stays observable in good condition for a long time. In the Northern Hemisphere, it will be unobservable soon. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  28   9 38.95  -16 52.7   3.964   4.047    87   17.6  18:27 (134, 66)  
June  4   9 41.54  -17  9.4   4.019   4.010    82   17.6  18:25 (124, 63)

* C/2020 U5 ( PanSTARRS )

Now it is 16.9 mag (May 18, Masayoshi Yoshimi). It started fading before the perihelion passage. It was predicted to stay at 16 mag for a long time. But actually, it will be fainter than 18 mag in autumn. In the Northern Hemisphere, it stays observable in good condition for a long time. In the Southern Hemisphere, it is not observable until 2023. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  28   0  6.25   80 22.3   4.088   3.765    64   17.6   5:27 (186,-27)  
June  4  23 50.76   81 31.4   4.075   3.770    65   17.6   5:30 (184,-27)

* 422P/2021 L1 ( Christensen )

It was observed at 17 mag in 2021. It is observable at 17-18 mag also in 2022. It will be observable in June also in the Northern Hemisphere. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  28   2  0.23   -1 54.8   3.937   3.241    40   17.6   5:27 (255, 23)  
June  4   2  7.63   -0 42.7   3.891   3.255    45   17.6   5:30 (250, 27)

* 107P/(4015) Wilson-Harrington

It will brighten up to 16.5 mag in July. In 2022, it stays observable for a long time. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  28  21 16.54  -14 51.7   0.813   1.495   109   18.0   4:55 (180, 70)  
June  4  21 38.79  -12 36.0   0.722   1.435   110   17.7   4:50 (180, 68)

* 70P/Kojima

Now it is 17.8 mag (May 3, Y. Sugiyama). It will be fading after this, and it will be fainter than 18 mag in June. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  28  11 37.16   10 49.1   2.123   2.564   103   17.7  19:14 (180, 44)  
June  4  11 42.69    9 57.9   2.236   2.595    98   17.9  18:52 (180, 45)

* C/2022 J1 ( Maury-Attard )

Now it is 17.2 mag (May 10, Hirohisa Sato). It stays 17-18 mag until June. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  28  20 27.98  -16 24.5   1.335   2.050   121   17.7   4:08 (180, 71)  
June  4  20  3.18  -12 59.1   1.283   2.105   132   17.8   3:16 (180, 68)

* C/2019 K7 ( Smith )

It brightened up to 14.2 mag from summer to autumn in 2021 (Sept. 3, C. S. Morris). Now it is 17.7 mag (May 11, Catalina Sky Survey). Fading slowly. In the Northern Hemisphere, it is observable in good condition. It is not observable in the Southern Hemisphere. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  28  14 52.83   69 43.7   7.058   7.089    87   17.7  22:27 (180,-15)  
June  4  14 38.96   69 21.9   7.137   7.128    85   17.8  21:46 (180,-14)

* C/2020 P3 ( ATLAS )

Now it is 17.8 mag (Apr. 28, W. Hasubick). It stayed 17.5 mag for a long time in 2021. It will be fading slowly after this. In the Northern Hemisphere, it is observable in good condition. It is not observable in the Southern Hemisphere. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  28  11 33.02   63 42.0   7.432   7.304    78   17.8  19:10 (180, -9)  
June  4  11 33.07   62 32.5   7.509   7.320    75   17.8  18:43 (180, -7)

* C/2022 E2 ( ATLAS )

Now it is 17.4 mag (May 18, iTelescope Observatory, Siding Spring). It is expected to brighten up to 12-13 mag from 2024 to 2025. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  28   9 52.75  -22 11.5   7.674   7.784    92   17.8  18:27 (132, 72)  
June  4   9 52.71  -21 28.5   7.735   7.739    86   17.8  18:25 (121, 67)

* C/2019 T3 ( ATLAS )

It was observed at 16 mag from 2020 to 2021. Now it is fading. It will be fainter than 18 mag in summer. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  28  22 26.58   15 16.2   6.783   6.727    82   17.9   5:27 (192, 39)  
June  4  22 25.60   15  9.3   6.691   6.750    88   17.9   5:30 (182, 40)

* C/2020 PV6 ( PanSTARRS )

It brightened up to 13.9 mag in 2021 (Aug. 28, 2021, Toshihiko Ikemura, Hirohisa Sato). Now it is fading. It has already faded down to 17.6 mag (May 3, Thomas Lehmann). It will be fainter than 18 mag in June. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  28  11 16.89   36 39.3   3.324   3.448    88   17.9  18:54 (180, 19)  
June  4  11 11.51   35  2.2   3.490   3.500    82   18.1  18:25 (179, 20)

* C/2019 E3 ( ATLAS )

Now it is 17.3 mag (May 5, ATLAS Chile). Very far object. It stays 18 mag for a long time from 2021 to 2026. In the Southern Hemisphere, it stays observable in good condition for a long time. In the Northern Hemisphere, it is not observable at all. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  28   7 30.35  -62 40.9  10.616  10.703    92   17.9  18:27 ( 32, 49)  
June  4   7 32.43  -62 24.9  10.628  10.693    90   17.9  18:25 ( 34, 46)

* 71P/Clark

Now it is 17.8 mag (Mar. 8, D. Buczynski). The condition is bad in this apparition. It will brighten up to 13 mag in winter. But it is not observable at the high light. Before the perihelion passage, it is observable only until August when it brightens up to 17 mag. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  28  10  7.19   21  9.8   2.555   2.581    80   18.0  18:27 (168, 33)  
June  4  10 13.39   20 10.7   2.606   2.543    75   17.9  18:25 (163, 33)

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