Weekly Information about Bright Comets (2022 June 11: South)

Japanese version
Home page
 Updated on June 19, 2022
Last week North Next week

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.

---------------------------------------------------------------------

* C/2017 K2 ( PanSTARRS )

Now it is bright as 9.2 mag (June 7, Toshihiko Ikemura, Hirohisa Sato). 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 11  18  5.76    7 41.1   2.040   2.943   146    9.1   0:51 (180, 47)  
June 18  17 52.72    5 59.5   1.953   2.881   150    8.9   0:11 (180, 49)

* C/2021 E3 ( ZTF )

Now it is very bright as 9.3 mag (June 5, Chris Wyatt). 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 11   6 16.74  -79  4.7   1.256   1.777   102    9.4  18:25 ( 14, 36)  
June 18   7 51.11  -72  7.2   1.327   1.779    97    9.5  18:25 ( 22, 41)

* 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 11   7 13.20   49 57.4   2.036   1.344    35   10.8  18:25 (142,-13)  
June 18   7 44.73   46  2.2   2.006   1.282    33   10.6  18:25 (140,-10)

* C/2019 L3 ( ATLAS )

Now it is 10.1 mag (May 28, Osamu Miyazaki). In the Northern Hemisphere, it is already unobservable. In the Southern Hemisphere, it becomes unobservable temporarily from July to August. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June 11   7 42.79    7 40.3   4.555   3.814    38   11.0  18:25 (115, 19)  
June 18   7 50.05    6 43.7   4.632   3.837    34   11.1  18:25 (110, 16)

* 45P/Honda-Mrkos-Pajdusakova

Now it is 9.8 mag (June 9, Martin Masek). It is brighter than originally predicted by 3 mag. It brightened up to 6.7 mag in early May (May 10, Mike Olason). Now it is fading rapidly. 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 11   7 41.36   23 38.5   1.704   1.023    33   11.2  18:25 (127,  9)  
June 18   8 15.80   22 16.8   1.793   1.120    34   12.2  18:25 (127, 11)

* 22P/Kopff

Now it is 12.0 mag (June 1, Katsumi Yoshimoto). 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 11   0 27.35    0 12.0   1.768   1.770    73   11.7   5:33 (218, 48)  
June 18   0 39.92    1 11.2   1.739   1.803    76   11.9   5:36 (212, 49)

* C/2019 T4 ( ATLAS )

Now it is bright as 12.2 mag (June 5, Chris Wyatt). It stays observable at 11-12 mag until July. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June 11  11 52.59   -7 15.8   3.924   4.242   101   11.8  18:35 (180, 62)  
June 18  11 56.12   -6 24.5   4.029   4.243    95   11.8  18:25 (172, 61)

* 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 11  21 35.47  -62 37.6   2.454   3.111   121   12.9   4:21 (  0, 63)  
June 18  21  5.63  -63 45.1   2.359   3.090   127   12.8   3:24 (  0, 61)

* 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. Now it is very bright as 9.8 mag (June 5, Giuseppe Pappa). 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 11   3  7.27   -7 25.4   2.021   1.466    43   12.8   5:33 (261, 25)  
June 18   3 18.75  -11 21.2   1.994   1.546    49   13.3   5:36 (262, 31)

* 9P/Tempel 1

Now it is 13.0 mag (May 27, 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 11  22 52.26  -20 14.1   1.287   1.808   102   13.0   5:33 (182, 75)  
June 18  23  0.23  -20 31.2   1.258   1.842   107   13.1   5:17 (180, 75)

* 169P/NEAT

Now it is very bright as 13.8 mag (May 31, Thomas Lehmann). 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 11   2  1.67   16 34.2   1.054   0.807    45   14.1   5:33 (230, 21)  
June 18   2 51.74   18 30.7   1.085   0.730    40   13.2   5:36 (232, 17)

* 117P/Helin-Roman-Alu 1

Now it is 13.2 mag (June 5, Chris Wyatt). It stays observable at 13-14 mag for a while. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June 11  19  3.11  -30 22.1   2.092   3.043   154   13.3   1:48 (180, 85)  
June 18  18 58.90  -30 50.8   2.059   3.041   161   13.3   1:16 (180, 86)

* C/2020 V2 ( ZTF )

Now it is 13.6 mag (June 2, Thomas Lehmann). 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 11   9 53.27   57 21.1   4.608   4.189    59   13.5  18:25 (166, -5)  
June 18   9 52.13   56 39.3   4.625   4.132    55   13.5  18:25 (162, -6)

* 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 11   3 53.27  -32 36.3   1.418   1.249    59   13.7   5:33 (291, 29)  
June 18   4 26.98  -38 25.6   1.299   1.257    64   13.6   5:36 (298, 30)

* C/2019 U5 ( PanSTARRS )

Now it is 13.6 mag (June 7, Toshihiko Ikemura, 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)  
June 11  14 10.11   40 21.6   4.109   4.454   103   13.7  20:51 (180, 15)  
June 18  14  0.35   39  2.2   4.153   4.419    98   13.7  20:13 (180, 16)

* 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 12.1 mag (June 2, Thomas Lehmann). 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 11   8 40.95   40 27.0   2.509   1.951    46   13.7  18:25 (147,  4)  
June 18   9  1.86   39 19.7   2.598   2.003    44   14.0  18:25 (145,  4)

* C/2020 K1 ( PanSTARRS )

Now it is 13.7 mag (June 3, Toshihiko Ikemura, Hirohisa Sato). 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 11  18 29.90   17 38.8   3.613   4.395   135   13.9   1:15 (180, 37)  
June 18  18 22.45   16 53.4   3.536   4.350   138   13.8   0:40 (180, 38)

* 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 11  10 30.02   10 41.3   2.236   2.212    75   13.9  18:25 (156, 41)  
June 18  10 40.74    9 26.6   2.303   2.206    71   13.9  18:25 (150, 41)

* C/2022 E3 ( ZTF )

Now it is 13.8 mag (June 18, Bob King). 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 11  19 41.42   25 41.3   2.584   3.212   119   14.1   2:26 (180, 29)  
June 18  19 29.48   27 55.9   2.466   3.135   122   13.9   1:47 (180, 27)

* 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 11   5 33.05   29 14.4   6.999   5.994     7   14.1  18:25 (114,-18)  
June 18   5 39.34   29 14.9   7.005   5.996     5   14.1   5:36 (248,-20)

* 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 13.4 mag (May 28, 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 11  17 41.01  -36 37.9   1.747   2.741   165   14.1   0:27 (  0, 88)  
June 18  17 17.44  -35  2.2   1.832   2.831   166   14.3  23:29 (180, 90)

* 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 11  10 21.91   20 32.1   1.389   1.418    70   14.5  18:25 (158, 31)  
June 18  10 33.98   18 28.8   1.377   1.356    67   14.2  18:25 (153, 32)

* C/2020 Y2 ( ATLAS )

Now it is 15.0 mag (May 26, ATLAS South Africa). 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 11   6 33.11  -41 30.8   3.387   3.133    67   14.8  18:25 ( 58, 31)  
June 18   6 35.21  -40 37.4   3.422   3.133    65   14.8  18:25 ( 57, 26)

* C/2018 U1 ( Lemmon )

Now it is 15.8 mag (May 28, 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 11  15 26.67  -50 53.1   4.405   5.270   145   14.9  22:07 (  0, 74)  
June 18  15 14.94  -50 53.1   4.467   5.287   140   15.0  21:28 (  0, 74)

* 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 11   5 54.37   21 51.9   3.350   2.352     9   15.2  18:25 (110,-10)  
June 18   6  8.88   21 55.6   3.320   2.311     5   15.1  18:25 (108,-13)

* 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 15.4 mag (June 2, Thomas Lehmann). 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June 11  12  5.95   31 44.2   4.976   5.043    87   15.8  18:48 (180, 23)  
June 18  12  3.29   31 33.0   5.133   5.087    81   15.9  18:25 (178, 24)

* C/2020 H6 ( ATLAS )

Now it is 15.9 mag (June 3, Toshihiko Ikemura, Hirohisa Sato). 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 11  15 38.46   42 50.5   4.664   5.108   110   16.1  22:19 (180, 12)  
June 18  15 34.26   43  6.6   4.738   5.129   107   16.1  21:47 (180, 12)

* 152P/Helin-Lawrence

Now it is 17.4 mag (May 31, D. De Martin, C. W. Hergenrother). 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 11  19 57.44  -24  1.9   2.327   3.197   142   16.2   2:42 (180, 79)  
June 18  19 54.91  -24 32.5   2.284   3.206   150   16.1   2:12 (180, 79)

* 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 16.0 mag (June 2, Thomas Lehmann). 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 11  13 31.16   72 42.5   1.045   1.286    77   16.4  20:15 (180,-17)  
June 18  14  2.16   67 36.6   1.173   1.416    80   17.2  20:17 (180,-12)

* 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 15.5 mag (May 28, Ken-ichi Kadota). It will be fainter than 18 mag in July. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June 11  10  3.03    9  2.6   2.201   2.083    69   16.5  18:25 (147, 40)  
June 18  10 16.52    8  2.7   2.330   2.141    66   16.9  18:25 (142, 39)

* 246P/NEAT

Now it is 16.9 mag (June 6, ATLAS-HKO, Haleakala). 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 11   0 31.21  -13 44.1   3.757   3.694    78   16.6   5:33 (233, 59)  
June 18   0 36.25  -13 39.8   3.679   3.712    83   16.6   5:36 (224, 62)

* C/2020 F5 ( MASTER )

It brightened up to 14 mag in 2021. Now it is fading. It has already faded down to 16.2 mag (June 1, Ken-ichi Kadota). It is observable at 16-17 mag in 2022. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June 11   0 11.16    8 10.6   5.813   5.620    74   16.6   5:33 (208, 43)  
June 18   0 12.39    8 58.9   5.740   5.655    80   16.6   5:36 (198, 44)

* 61P/Shajn-Schaldach

Now it is 17.8 mag (June 3, Catalina Sky Survey). It is expected to brighten up to 15 mag in autumn, and it will be observable in good condition. But actually, it is fainter than this ephemeris. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June 11   0  5.98    1 20.0   2.349   2.355    77   16.8   5:33 (210, 49)  
June 18   0 16.49    2 14.2   2.251   2.334    81   16.6   5:36 (203, 50)

* 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 16.0 mag (June 3, Toshihiko Ikemura, Hirohisa Sato). It will be fainter than 18 mag in summer. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June 11  10 23.22    0 17.8   4.225   4.132    77   16.7  18:25 (148, 50)  
June 18  10 23.89   -0 31.2   4.381   4.176    71   16.8  18:25 (138, 48)

* C/2021 G2 ( ATLAS )

Now it is 16.8 mag (June 1, ATLAS South Africa). 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 11   7 38.00  -24  6.0   8.305   7.822    58   16.7  18:25 ( 84, 36)  
June 18   7 42.35  -23 58.7   8.318   7.785    55   16.7  18:25 ( 81, 32)

* C/2020 O2 ( Amaral )

Now it is 16.6 mag (June 7, Toshihiko Ikemura, Hirohisa Sato). 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 11  18 26.26   27 14.3   4.673   5.344   126   16.7   1:11 (180, 28)  
June 18  18 21.41   28 11.0   4.685   5.367   127   16.7   0:39 (180, 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 11   2  3.37  -25 39.1   5.060   4.762    67   16.8   5:33 (271, 48)  
June 18   2  7.56  -25 22.2   5.022   4.801    71   16.8   5:36 (267, 53)

* 118P/Shoemaker-Levy 4

It is expected to brighten very rapidly up to 11-12 mag in winter, and it will be observable in excellent condition. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June 11   2 53.32    9 16.2   3.009   2.277    36   17.0   5:33 (245, 17)  
June 18   3  7.53   10  5.6   2.932   2.247    39   16.9   5:36 (241, 20)

* 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 16.5 mag (May 26, 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 11  10  9.09   14 11.4   2.813   2.634    69   16.9  18:25 (152, 36)  
June 18  10 18.30   13 11.8   2.948   2.685    65   17.1  18:25 (146, 35)

* 44P/Reinmuth 2

Now it is 16.4 mag (June 6, ATLAS-MLO, Mauna Loa). 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 11   1 27.89   14 21.4   2.573   2.145    54   17.0   5:33 (224, 28)  
June 18   1 40.89   15 46.0   2.523   2.155    57   16.9   5:36 (220, 29)

* 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 11  13 29.43    4 12.0   8.289   8.819   118   17.0  20:11 (180, 51)  
June 18  13 26.54    4 23.8   8.398   8.819   111   17.0  19:40 (180, 51)

* 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 11  22  3.58   -9 50.3   0.640   1.375   110   17.4   4:47 (180, 65)  
June 18  22 31.62   -6 27.7   0.567   1.317   109   17.1   4:47 (180, 61)

* 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 26, 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 11  23 19.82  -33 21.0   3.876   4.200   101   17.1   5:33 (256, 83)  
June 18  23 22.22  -34  2.9   3.846   4.259   107   17.2   5:36 (208, 89)

* C/2022 A2 ( PanSTARRS )

Now it is 17.6 mag (June 2, ATLAS-HKO, Haleakala). 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 11  10 27.60    7 46.6   3.591   3.487    75   17.2  18:25 (154, 44)  
June 18  10 28.96    8 44.3   3.648   3.422    69   17.2  18:25 (146, 40)

* C/2019 O3 ( Palomar )

Now it is 17.2 mag (June 3, B. Haeusler). 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 11  18 45.67   67  9.7   9.186   9.211    88   17.2   1:29 (180,-12)  
June 18  18 37.02   67 41.1   9.195   9.223    88   17.2   0:53 (180,-13)

* 99P/Kowal 1

Now it is 16.8 mag (June 3, Toshihiko Ikemura, Hirohisa Sato). It stays 17 mag for a while. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June 11  13  8.03   -7 20.8   4.139   4.711   118   17.2  19:50 (180, 62)  
June 18  13  8.39   -7 27.0   4.235   4.713   112   17.3  19:23 (180, 63)

* 408P/2020 M7 ( Novichonok-Gerke )

Appearing in the morning sky. It will be observable at 16 mag in excellent condition from autumn to winter. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June 11   2 56.56    9 29.5   4.284   3.511    35   17.3   5:33 (245, 17)  
June 18   3  5.58    9 44.5   4.219   3.506    40   17.2   5:36 (241, 20)

* C/2020 F7 ( Lemmon )

Now it is 17.9 mag (June 1, iTelescope Observatory, Siding Spring). 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 11   6 53.65  -41  7.5   5.850   5.552    68   17.4  18:25 ( 60, 34)  
June 18   6 57.09  -41 21.7   5.886   5.566    66   17.5  18:25 ( 58, 30)

* 100P/Hartley 1

Now it is 17.8 mag (June 3, Toshihiko Ikemura, Hirohisa Sato). 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 11  11 30.89   14 46.3   1.847   2.072    87   17.5  18:25 (176, 40)  
June 18  11 37.88   12 16.5   1.908   2.060    83   17.5  18:25 (169, 42)

* 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 11   9 44.80  -17 30.6   4.071   3.973    77   17.5  18:25 (116, 59)  
June 18   9 48.67  -17 56.6   4.121   3.936    72   17.5  18:25 (109, 54)

* C/2020 U5 ( PanSTARRS )

Now it is 17.5 mag (June 1, A. Diepvens). 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 11  23 24.88   82 39.2   4.058   3.776    66   17.6   5:33 (181,-28)  
June 18  22 43.54   83 38.0   4.037   3.783    68   17.6   5:00 (180,-29)

* 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 11   2 14.72    0 26.6   3.839   3.269    49   17.6   5:33 (245, 30)  
June 18   2 21.49    1 33.1   3.781   3.284    53   17.6   5:36 (239, 34)

* 71P/Clark

Now it is 18.4 mag (June 1, J.-G. Bosch, F. Kugel). 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 11  10 20.38   19  7.7   2.655   2.504    70   17.8  18:25 (157, 33)  
June 18  10 28.08   18  0.8   2.700   2.466    65   17.8  18:25 (151, 32)

* C/2022 E2 ( ATLAS )

Now it is 17.9 mag (June 5, ATLAS South Africa). 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 11   9 53.06  -20 49.0   7.796   7.695    80   17.8  18:25 (113, 62)  
June 18   9 53.78  -20 12.9   7.855   7.650    74   17.8  18:25 (107, 56)

* C/2020 P3 ( ATLAS )

Now it is 17.7 mag (May 26, iTelescope Observatory, Mayhill). 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 11  11 33.92   61 22.2   7.586   7.337    72   17.8  18:25 (179, -6)  
June 18  11 35.47   60 11.7   7.661   7.354    68   17.9  18:25 (176, -5)

* 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 17.6 mag (June 1, 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 11  14 26.54   68 51.0   7.217   7.167    83   17.8  21:06 (180,-14)  
June 18  14 15.75   68 12.8   7.298   7.206    80   17.9  20:28 (180,-13)

* C/2022 J1 ( Maury-Attard )

Now it is 17.7 mag (June 3, Toshihiko Ikemura, Hirohisa Sato). It stays 17-18 mag until June. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June 11  19 36.00   -9 19.3   1.259   2.162   143   17.8   2:22 (180, 64)  
June 18  19  7.80   -5 37.5   1.266   2.221   153   18.0   1:26 (180, 61)

* C/2019 T3 ( ATLAS )

Now it is 17.4 mag (June 6, W. Hasubick). 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 11  22 24.13   14 59.3   6.599   6.772    95   17.9   5:08 (180, 40)  
June 18  22 22.16   14 45.8   6.508   6.795   102   17.9   4:39 (180, 40)

* C/2019 E3 ( ATLAS )

Now it is 16.9 mag (May 26, ATLAS South Africa). 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 11   7 34.88  -62 12.4  10.641  10.683    89   17.9  18:25 ( 34, 43)  
June 18   7 37.62  -62  3.7  10.654  10.673    88   17.9  18:25 ( 35, 40)

* 325P/Yang-Gao

Now it is 18.1 mag (June 7, Toshihiko Ikemura, Hirohisa Sato). 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 11  21 20.51    1 14.6   0.921   1.640   115   18.5   4:05 (180, 54)  
June 18  21 21.05    3 40.3   0.912   1.677   120   18.5   3:38 (180, 51)

---------------------------------------------------------------------

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