Weekly Information about Bright Comets (2022 June 4: North)

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Updated on June 5, 2022
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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/2017 K2 ( PanSTARRS )

Now it is bright as 9.7 mag (June 1, 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)  
June  4  18 17.44    9  1.4   2.144   3.005   141    9.2   1:30 (  0, 64)  
June 11  18  5.76    7 41.1   2.040   2.943   146    9.1   0:51 (  0, 63)  

* C/2021 E3 ( ZTF )

Now it is very bright as 9.4 mag (May 29, 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)  
June  4   2 15.87  -81 16.8   1.219   1.780   105    9.3   3:02 (349,-35)  
June 11   6 16.74  -79  4.7   1.256   1.777   102    9.4  20:59 ( 13,-40)  

* 45P/Honda-Mrkos-Pajdusakova

Appearing in the evening sky. Now it is very bright as 8.4 mag (May 31, Carlos Labordena). 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)  
June  4   7  2.75   24 34.7   1.629   0.925    31   10.2  20:54 (116,  6)  
June 11   7 41.36   23 38.5   1.704   1.023    33   11.2  20:59 (114,  7)  

* C/2021 P4 ( ATLAS )

Now it is bright as 11.4 mag (May 28, Osamu Miyazaki). It is expected to brighten up to 9-10 mag in summer. But it is not observable around the high light. In the Northern Hemisphere, it is observable only until June. In the Souther Hemisphere, it is not observable until October.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June  4   6 38.47   53 14.8   2.074   1.411    37   11.1  20:54 (142, 19)  
June 11   7 13.20   49 57.4   2.036   1.344    35   10.8  20:59 (139, 17)  

* C/2019 L3 ( ATLAS )

Now it is 10.1 mag (May 28, 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)  
June  4   7 35.62    8 35.3   4.473   3.792    42   10.9  20:54 ( 98,  3)  
June 11   7 42.79    7 40.3   4.555   3.814    38   11.0  20:59 (101, -3)  

* 22P/Kopff

Now it is 11.1 mag (May 21, Thomas Lehmann). It will be fading gradually after this. It will be getting higher after this also in the Northern Hemisphere.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June  4   0 13.92   -0 53.9   1.795   1.738    70   11.6   3:02 (285, 19)  
June 11   0 27.35    0 12.0   1.768   1.770    73   11.7   2:59 (286, 22)  

* C/2019 T4 ( ATLAS )

Now it is bright as 12.0 mag (May 28, 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)  
June  4  11 49.62   -8 14.4   3.824   4.243   107   11.7  20:54 ( 38, 39)  
June 11  11 52.59   -7 15.8   3.924   4.242   101   11.8  20:59 ( 46, 36)  

* 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)  
June  4   2 55.77   -3 42.4   2.046   1.388    37   12.4   3:02 (263,-15)  
June 11   3  7.27   -7 25.4   2.021   1.466    43   12.8   2:59 (268,-15)  

* C/2020 R7 ( ATLAS )

Now it is 13.6 mag (May 26, Jose Guilherme de S. Aguiar). 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)  
June  4  21 58.58  -61 14.5   2.563   3.133   115   13.0   3:02 (345,-10)  
June 11  21 35.47  -62 37.6   2.454   3.111   121   12.9   2:59 (351, -9)  

* 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)  
June  4  22 42.71  -20  6.2   1.317   1.776    98   12.9   3:02 (316, 21)  
June 11  22 52.26  -20 14.1   1.287   1.808   102   13.0   2:59 (320, 23)  

* 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)  
June  4  19  6.44  -29 52.4   2.137   3.044   147   13.4   2:19 (  0, 25)  
June 11  19  3.11  -30 22.1   2.092   3.043   154   13.3   1:48 (  0, 25)  

* 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)  
June  4   8 18.88   41 25.1   2.421   1.899    48   13.5  20:54 (123, 28)  
June 11   8 40.95   40 27.0   2.509   1.951    46   13.7  20:59 (122, 26)  

* 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)  
June  4   9 55.59   58  3.8   4.583   4.246    64   13.6  20:54 (140, 46)  
June 11   9 53.27   57 21.1   4.608   4.189    59   13.5  20:59 (139, 41)  

* C/2019 U5 ( PanSTARRS )

Now it is 14.1 mag (May 27, Katsumi Yoshimoto). 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)  
June  4  14 21.13   41 30.8   4.074   4.489   107   13.7  21:29 (180, 84)  
June 11  14 10.11   40 21.6   4.109   4.454   103   13.7  20:59 (162, 85)  

* 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)  
June  4   3 28.03  -27 32.3   1.552   1.249    53   13.9   3:02 (282,-34)  
June 11   3 53.27  -32 36.3   1.418   1.249    59   13.7   2:59 (287,-36)  

* 116P/Wild 4

Now it is 13.6 mag (May 31, Toshihiko Ikemura, Hirohisa Sato). 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)  
June  4  10 19.77   11 52.4   2.168   2.218    79   13.8  20:54 ( 76, 38)  
June 11  10 30.02   10 41.3   2.236   2.212    75   13.9  20:59 ( 79, 33)  

* 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)  
June  4  18 36.80   18 13.1   3.704   4.440   131   14.0   1:49 (  0, 73)  
June 11  18 29.90   17 38.8   3.613   4.395   135   13.9   1:15 (  0, 73)  

* 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)  
June  4  18  7.34  -37 55.3   1.688   2.650   156   13.9   1:21 (  0, 17)  
June 11  17 41.01  -36 37.9   1.747   2.741   165   14.1   0:27 (  0, 18)  

* 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)  
June  4   1 13.37   13 59.3   1.051   0.891    51   14.9   3:02 (264, 16)  
June 11   2  1.67   16 34.2   1.054   0.807    45   14.1   2:59 (258, 12)  

* 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)  
June  4   5 26.79   29 13.4   6.983   5.991    11   14.1  20:54 (134, -7)  
June 11   5 33.05   29 14.4   6.999   5.994     7   14.1  20:59 (138,-11)  

* C/2022 E3 ( ZTF )

Now it is 14.5 mag (May 31, Toshihiko Ikemura, Hirohisa Sato). 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)  
June  4  19 51.17   23 24.5   2.716   3.288   115   14.3   3:02 (358, 78)  
June 11  19 41.42   25 41.3   2.584   3.212   119   14.1   2:26 (  0, 81)  

* 73P/Schwassmann-Wachmann 3

Now it is 15.1 mag (May 30, 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)  
June  4  10 11.11   22 24.6   1.396   1.481    73   14.8  20:54 ( 89, 42)  
June 11  10 21.91   20 32.1   1.389   1.418    70   14.5  20:59 ( 90, 37)  

* 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 originally expected. 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)  
June  4   6 31.27  -42 37.4   3.346   3.135    69   14.7  20:54 ( 59,-35)  
June 11   6 33.11  -41 30.8   3.387   3.133    67   14.8  20:59 ( 62,-41)  

* 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)  
June  4  15 39.14  -50 44.2   4.360   5.253   148   14.9  22:47 (  0,  4)  
June 11  15 26.67  -50 53.1   4.405   5.270   145   14.9  22:07 (  0,  4)  

* 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)  
June  4   5 40.26   21 43.3   3.374   2.394    12   15.4  20:54 (126,-10)  
June 11   5 54.37   21 51.9   3.350   2.352     9   15.2  20:59 (129,-13)  

* C/2021 O3 ( PanSTARRS )

It was expected to brighten up to 4 mag, but it faded rapidly around the perihelion passage. It has already faded down to 14.6 mag (May 27, Katsumi Yoshimoto). 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)  
June  4  12 23.28   78 13.0   0.920   1.151    72   15.6  20:54 (174, 47)  
June 11  13 31.16   72 42.5   1.045   1.286    77   16.4  20:59 (174, 52)  

* 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 15.8 mag (May 31, Toshihiko Ikemura, Hirohisa Sato).

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June  4  12  9.50   31 51.4   4.818   4.999    94   15.7  20:54 ( 88, 70)  
June 11  12  5.95   31 44.2   4.976   5.043    87   15.8  20:59 ( 92, 62)  

* (3200) Phaethon

It approached to Sun down to 0.14 a.u. on May 15. But it was not observable around that time. Appearing in the morning sky. In the Northern Hemisphere, it stays observable at 17-18 mag in good condition from July to November. In the Southern Hemisphere, it stays extremely low.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June  4   2 46.04   26 59.3   1.323   0.635    27   15.7   3:02 (240,  5)  
June 11   2 56.22   29  1.1   1.436   0.783    31   16.2   2:59 (240,  9)  

* 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)  
June  4   9 48.99   10  0.9   2.073   2.024    72   16.0  20:54 ( 80, 31)  
June 11  10  3.03    9  2.6   2.201   2.083    69   16.5  20:59 ( 82, 27)  

* C/2020 H6 ( ATLAS )

Now it is 15.9 mag (May 15, Thomas Lehmann). It stays observable at 16 mag from 2021 to 2022. It locates low in the Southern Hemisphere.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June  4  15 43.10   42 24.3   4.595   5.087   113   16.0  22:51 (180, 83)  
June 11  15 38.46   42 50.5   4.664   5.108   110   16.1  22:19 (180, 82)  

* 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)  
June  4  19 59.01  -23 33.9   2.380   3.188   135   16.2   3:02 (357, 31)  
June 11  19 57.44  -24  1.9   2.327   3.197   142   16.2   2:42 (  0, 31)  

* 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 15.9 mag (May 21, Thomas Lehmann). It will be fainter than 18 mag in summer.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June  4  10 23.19    1  6.1   4.065   4.089    84   16.5  20:54 ( 66, 32)  
June 11  10 23.22    0 17.8   4.225   4.132    77   16.7  20:59 ( 71, 25)  

* 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)  
June  4   0 25.63  -13 53.4   3.833   3.676    73   16.6   3:02 (294,  9)  
June 11   0 31.21  -13 44.1   3.757   3.694    78   16.6   2:59 (296, 12)  

* 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)  
June  4   0  9.47    7 20.5   5.884   5.585    68   16.6   3:02 (279, 25)  
June 11   0 11.16    8 10.6   5.813   5.620    74   16.6   2:59 (282, 30)  

* 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)  
June  4   9 59.89   15 10.2   2.676   2.583    73   16.6  20:54 ( 83, 36)  
June 11  10  9.09   14 11.4   2.813   2.634    69   16.9  20:59 ( 86, 31)  

* 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)  
June  4  18 30.83   26  9.2   4.671   5.322   125   16.7   1:43 (  0, 81)  
June 11  18 26.26   27 14.3   4.673   5.344   126   16.7   1:11 (  0, 82)  

* C/2021 G2 ( ATLAS )

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

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June  4   7 33.86  -24 16.8   8.286   7.859    61   16.7  20:54 ( 71,-16)  
June 11   7 38.00  -24  6.0   8.305   7.822    58   16.7  20:59 ( 75,-21)  

* 61P/Shajn-Schaldach

Now it is 19.5 mag (May 27, Giuseppe Pappa). 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)  
June  4  23 55.25    0 23.1   2.447   2.377    74   16.9   3:02 (287, 23)  
June 11   0  5.98    1 20.0   2.349   2.355    77   16.8   2:59 (289, 27)  

* 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. In the Northern Hemisphere, it is not observable until July.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June  4   1 58.73  -26  1.2   5.093   4.723    63   16.8   3:02 (291,-16)  
June 11   2  3.37  -25 39.1   5.060   4.762    67   16.8   2:59 (293,-12)  

* 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)  
June  4   1 14.67   12 53.0   2.622   2.137    51   17.0   3:02 (264, 15)  
June 11   1 27.89   14 21.4   2.573   2.145    54   17.0   2:59 (265, 18)  

* C/2020 F2 ( ATLAS )

Now it is 16.8 mag (May 31, Toshihiko Ikemura, Hirohisa Sato). 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)  
June  4  13 32.70    3 57.3   8.188   8.820   125   17.0  20:54 (  6, 59)  
June 11  13 29.43    4 12.0   8.289   8.819   118   17.0  20:59 ( 23, 57)  

* 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 stays extremely low.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June  4  23 16.61  -32 43.6   3.910   4.141    95   17.0   3:02 (318,  7)  
June 11  23 19.82  -33 21.0   3.876   4.200   101   17.1   2:59 (322,  9)  

* C/2019 O3 ( Palomar )

Now it is 17.0 mag (May 19, E. Cortes). 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)  
June  4  18 53.63   66 31.7   9.180   9.200    87   17.2   2:05 (180, 58)  
June 11  18 45.67   67  9.7   9.186   9.211    88   17.2   1:29 (180, 58)  

* 99P/Kowal 1

Now it is 17.1 mag (May 17, A. Diepvens). It stays 17 mag for a while.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June  4  13  8.29   -7 18.3   4.049   4.710   125   17.2  20:54 ( 13, 47)  
June 11  13  8.03   -7 20.8   4.139   4.711   118   17.2  20:59 ( 25, 44)  

* 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)  
June  4  10 27.00    6 42.1   3.531   3.552    82   17.2  20:54 ( 70, 36)  
June 11  10 27.60    7 46.6   3.591   3.487    75   17.2  20:59 ( 77, 31)  

* 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)  
June  4   6 50.46  -40 59.6   5.809   5.537    69   17.4  20:54 ( 59,-32)  
June 11   6 53.65  -41  7.5   5.850   5.552    68   17.4  20:59 ( 61,-37)  

* 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)  
June  4  21 38.79  -12 36.0   0.722   1.435   110   17.7   3:02 (327, 36)  
June 11  22  3.58   -9 50.3   0.640   1.375   110   17.4   2:59 (325, 38)  

* 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)  
June  4  11 24.78   17 16.2   1.788   2.085    91   17.5  20:54 ( 69, 54)  
June 11  11 30.89   14 46.3   1.847   2.072    87   17.5  20:59 ( 72, 47)  

* 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)  
June  4   9 41.54  -17  9.4   4.019   4.010    82   17.6  20:54 ( 59, 12)  
June 11   9 44.80  -17 30.6   4.071   3.973    77   17.5  20:59 ( 63,  7)  

* 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)  
June  4  23 50.76   81 31.4   4.075   3.770    65   17.6   3:02 (189, 39)  
June 11  23 24.88   82 39.2   4.058   3.776    66   17.6   2:59 (187, 40)  

* 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 soon also in the Northern Hemisphere.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June  4   2  7.63   -0 42.7   3.891   3.255    45   17.6   3:02 (268, -4)  
June 11   2 14.72    0 26.6   3.839   3.269    49   17.6   2:59 (270,  0)  

* 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)  
June  4  20  3.18  -12 59.1   1.283   2.105   132   17.8   3:02 (355, 42)  
June 11  19 36.00   -9 19.3   1.259   2.162   143   17.8   2:22 (  0, 46)  

* 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 18, 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)  
June  4  14 38.96   69 21.9   7.137   7.128    85   17.8  21:46 (180, 56)  
June 11  14 26.54   68 51.0   7.217   7.167    83   17.8  21:06 (180, 56)  

* C/2020 P3 ( ATLAS )

Now it is 18.1 mag (May 18, Catalina Sky Survey). 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)  
June  4  11 33.07   62 32.5   7.509   7.320    75   17.8  20:54 (153, 56)  
June 11  11 33.92   61 22.2   7.586   7.337    72   17.8  20:59 (148, 53)  

* 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)  
June  4   9 52.71  -21 28.5   7.735   7.739    86   17.8  20:54 ( 54, 11)  
June 11   9 53.06  -20 49.0   7.796   7.695    80   17.8  20:59 ( 59,  6)  

* 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)  
June  4  10 13.39   20 10.7   2.606   2.543    75   17.9  20:54 ( 87, 41)  
June 11  10 20.38   19  7.7   2.655   2.504    70   17.8  20:59 ( 89, 36)  

* 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)  
June  4  22 25.60   15  9.3   6.691   6.750    88   17.9   3:02 (289, 50)  
June 11  22 24.13   14 59.3   6.599   6.772    95   17.9   2:59 (296, 55)  

* 70P/Kojima

Now it is 17.8 mag (May 31, Toshihiko Ikemura, Hirohisa Sato). 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)  
June  4  11 42.69    9 57.9   2.236   2.595    98   17.9  20:54 ( 55, 52)  
June 11  11 48.83    9  3.2   2.351   2.625    94   18.1  20:59 ( 61, 47)  

* 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)  
June  4   7 32.43  -62 24.9  10.628  10.693    90   17.9  20:54 ( 33,-32)  
June 11   7 34.88  -62 12.4  10.641  10.683    89   17.9  20:59 ( 34,-35)  

* 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)  
June  4  21 17.87   -1 23.6   0.933   1.606   110   18.4   3:02 (326, 48)  
June 11  21 20.51    1 14.6   0.921   1.640   115   18.5   2:59 (332, 53)  

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