Weekly Information about Bright Comets (2022 Apr. 16: North)

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 Updated on April 18, 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/2021 O3 ( PanSTARRS )

It brightened up to 15.1 mag in February (Feb. 1, Ken-ichi Kadota). It was visible at 7-8 mag between Apr. 7-9 in the SWAN images. Now it is not observable. In the Northern Hemisphere, it will appear at 6 mag in mid May, and it stays observable in good condition after that 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)  
Apr. 16   2 22.56   -0  2.5   1.160   0.329    15    5.5  20:01 (101,-15)  
Apr. 23   3  2.39    5 55.2   0.887   0.294    16    4.4  20:09 (106,-10)

* 45P/Honda-Mrkos-Pajdusakova

It has not been observed yet in this apparition. It will brighten very rapidly up to 9 mag in May. 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)  
Apr. 16   1 38.25    8 42.4   1.594   0.591     1   10.0  20:01 (115,-18)  
Apr. 23   2 23.42   13 11.1   1.552   0.560     5    9.4  20:09 (117,-13)

* C/2021 F1 ( Lemmon-PanSTARRS )

It brightened very rapidly up to 9.3 mag in March (Mar. 24, Michael Jager). Now it is not observable. In the Southern Hemisphere, it will appear in the morning sky in late May. Then it stays observable in good condition after that. In the Northern Hemisphere, it will never be observable again. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 16   1 27.98   19 46.1   1.981   1.008     9    9.6   3:58 (237,-10)  
Apr. 23   1 42.39   16 23.4   2.027   1.033     6    9.8   3:47 (240,-12)

* C/2017 K2 ( PanSTARRS )

Now it is bright as 11.3 mag (Apr. 7, Osamu Miyazaki). The brightness evolution is slower than originally expected. It is expected to be observable at 7 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)  
Apr. 16  18 55.04   11 46.7   3.167   3.447    97   10.1   3:58 (316, 60)  
Apr. 23  18 53.90   11 47.6   3.004   3.383   103    9.9   3:47 (324, 63)

* C/2019 L3 ( ATLAS )

Now it is 10.1 mag (Apr. 6, Osamu Miyazaki). It will be getting lower after this. In the Northern Hemisphere, it will be unobservable in May. In the Southern Hemisphere, it stays observable until July. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 16   6 51.88   14 40.7   3.752   3.661    77   10.3  20:01 ( 72, 47)  
Apr. 23   6 57.08   13 48.2   3.866   3.677    71   10.3  20:09 ( 77, 41)

* 22P/Kopff

Now it is 11.3 mag (Apr. 2, 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)  
Apr. 16  22 18.07  -10 38.9   1.962   1.580    53   10.9   3:58 (290,  9)  
Apr. 23  22 36.80   -9  8.9   1.939   1.595    55   11.0   3:47 (288, 10)

* C/2019 T4 ( ATLAS )

Now it is bright as 11.6 mag (Apr. 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)  
Apr. 16  11 46.60  -18  3.3   3.351   4.266   152   11.5  22:08 (  0, 37)  
Apr. 23  11 45.12  -16 26.5   3.384   4.261   146   11.5  21:39 (  0, 39)

* 19P/Borrelly

Now it is bright as 10.0 mag (Apr. 6, Osamu Miyazaki). It will be fading after this. In the Northern Hemisphere, it stays observable in excellent condition for a long time. In the Southern Hemisphere, it stays extremely low after this. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 16   5 19.53   40 41.1   1.841   1.562    58   11.6  20:01 (117, 40)  
Apr. 23   5 46.42   41 51.0   1.917   1.606    56   11.9  20:09 (119, 39)

* C/2021 E3 ( ZTF )

Now it is very bright as 10.6 mag (Apr. 2, Thomas Lehmann). It will brighten up to 10-11 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 hardly observable after this. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 16  21  8.08  -33 15.6   1.886   1.921    76   12.2   3:58 (317,  5)  
Apr. 23  21 18.17  -37 39.3   1.729   1.889    82   12.0   3:47 (321,  3)

* 9P/Tempel 1

Now it is 14.3 mag (Apr. 9, Ken-ichi Kadota). It stays 12-13 mag for a while. But actually, it is fainter than this ephemeris recently. It is observable in excellent condition in the Southern Hemisphere. It locates low until May in the Northern Hemisphere. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 16  20 59.29  -21 55.1   1.536   1.598    74   12.3   3:58 (311, 15)  
Apr. 23  21 17.44  -21 31.9   1.505   1.617    77   12.4   3:47 (311, 15)

* 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)  
Apr. 16  20 42.77  -36 37.9   1.837   1.979    82   12.8   3:58 (323,  6)  
Apr. 23  20 29.26  -37 18.7   1.784   2.079    92   12.9   3:47 (329,  9)

* C/2020 Y2 ( ATLAS )

Now it is 14.4 mag (Apr. 5, 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)  
Apr. 16   6 43.30  -56 42.1   3.006   3.191    91   13.4  20:01 ( 23, -9)  
Apr. 23   6 36.59  -54  4.5   3.050   3.179    88   13.4  20:09 ( 29,-11)

* C/2021 P4 ( ATLAS )

Now it is 13.2 mag (Apr. 10, Ken-ichi Kadota). It is expected to brighten up to 11 mag in summer. In the Northern Hemisphere, it stays observable in good condition until June when it brightens up to 11 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)  
Apr. 16   2 18.80   58 12.3   2.457   1.952    48   13.9  20:01 (148, 20)  
Apr. 23   2 50.06   58 55.6   2.397   1.871    47   13.6  20:09 (149, 20)

* 116P/Wild 4

Now it is 13.2 mag (Apr. 8, Ken-ichi Kadota). 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)  
Apr. 16   9 29.10   18  1.7   1.701   2.289   113   13.6  20:01 (  8, 73)  
Apr. 23   9 33.29   17 24.6   1.763   2.276   107   13.7  20:09 ( 30, 70)

* C/2019 U5 ( PanSTARRS )

Now it is 14.0 mag (Apr. 6, Ken-ichi Kadota). It is expected to brighten up to 11 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)  
Apr. 16  15 52.04   42 39.1   4.180   4.746   118   13.8   2:17 (180, 82)  
Apr. 23  15 40.06   43 15.0   4.124   4.708   119   13.7   1:38 (180, 82)

* C/2020 R7 ( ATLAS )

Now it is 15.5 mag (Apr. 5, Slooh.com Chile Observatory). 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)  
Apr. 16  22 48.87  -54 19.8   3.471   3.323    73   13.9   3:58 (322,-22)  
Apr. 23  22 48.30  -54 45.2   3.343   3.292    78   13.8   3:47 (324,-20)

* C/2020 V2 ( ZTF )

Now it is 13.0 mag (Apr. 10, 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)  
Apr. 16  10 55.71   61 32.1   4.331   4.645   102   13.9  21:17 (180, 64)  
Apr. 23  10 42.12   61 25.8   4.364   4.588    96   13.8  20:36 (180, 64)

* 117P/Helin-Roman-Alu 1

Now it is 14.1 mag (Apr. 14, iTelescope Observatory, Siding Spring). It will brighten up to 13 mag in summer. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 16  18 58.50  -27  5.4   2.688   3.067   102   13.9   3:58 (339, 25)  
Apr. 23  19  2.90  -27 22.4   2.592   3.063   108   13.8   3:47 (342, 25)

* 29P/Schwassmann-Wachmann 1

Now it is fainter than 14.3 mag (Mar. 22, Chris Wyatt). It is observable until April in the Southern Hemisphere, or until May in the Northern Hemisphere. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 16   4 46.06   29  3.2   6.594   5.976    48   13.9  20:01 (107, 29)  
Apr. 23   4 51.31   29  4.3   6.677   5.978    42   13.9  20:09 (110, 23)

* C/2020 K1 ( PanSTARRS )

Now it is 14.6 mag (Apr. 10, Michael Jager). 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)  
Apr. 16  19  2.47   18 36.2   4.575   4.759    94   14.4   3:58 (304, 64)  
Apr. 23  19  1.37   18 46.9   4.437   4.713    99   14.3   3:47 (311, 67)

* 67P/Churyumov-Gerasimenko

It brightened up to 8.5 mag from autumn to winter (Dec. 2, Toshihiko Ikemura, Hirohisa Sato). Now it is fading. It has already faded down to 13.7 mag (Apr. 5, Chris Wyatt). It stays observable in good condition for a long time. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 16   8 58.69   21 35.3   1.722   2.209   105   14.6  20:01 ( 35, 74)  
Apr. 23   9  6.73   20 43.6   1.853   2.263   100   14.9  20:09 ( 50, 69)

* C/2020 J1 ( SONEAR )

It brightened up to 12.3 mag from spring to summer (June 15, Marco Goiato). Now it is fading. It has already faded down to 14.9 mag (Apr. 5, Chris Wyatt). 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 16  13  0.76   28 59.5   3.884   4.699   140   14.8  23:22 (  0, 84)  
Apr. 23  12 50.97   29 57.7   3.983   4.741   134   14.9  22:44 (  0, 85)

* 73P/Schwassmann-Wachmann 3

Now it is 16.3 mag (Apr. 2, Hirohisa Sato). It is expected to brighten up to 11 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)  
Apr. 16   9 40.41   31  7.5   1.335   1.929   110   15.0  20:03 (  0, 86)  
Apr. 23   9 39.05   30 22.1   1.349   1.866   103   14.8  20:09 ( 60, 81)

* C/2018 U1 ( Lemmon )

Now it is 14.8 mag (Apr. 15, iTelescope Observatory, Siding Spring). 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)  
Apr. 16  16 57.87  -45  6.6   4.517   5.149   124   14.9   3:24 (  0, 10)  
Apr. 23  16 49.60  -46 17.5   4.447   5.163   130   14.9   2:48 (  0,  9)

* 104P/Kowal 2

It brightened very rapidly up to 9.2 mag in winter (Jan. 31, Chris Wyatt). Now it is fading. But it is still bright as 12.6 mag (Apr. 5, Chris Wyatt). It will be fainter than 18 mag in May. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 16   7 47.79   15 12.6   1.248   1.607    90   15.1  20:01 ( 58, 58)  
Apr. 23   8  8.47   14 44.5   1.354   1.666    88   15.8  20:09 ( 62, 55)

* C/2021 T2 ( Fuls )

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

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 16   2  0.11   -8 11.6   2.394   1.483    19   15.6  20:01 ( 98,-25)  
Apr. 23   2  8.36   -9 54.3   2.308   1.430    22   15.4  20:09 (100,-31)

* C/2020 M5 ( ATLAS )

Now it is 15.1 mag (Apr. 5, Chris Wyatt). It became brighter after the perihelion passage. It will be fading after this, and it will be fainter than 18 mag in summer. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 16  10 50.12    6 28.5   3.013   3.796   135   15.4  21:12 (  0, 61)  
Apr. 23  10 42.62    5 44.1   3.142   3.837   127   15.6  20:37 (  0, 61)

* C/2022 E3 ( ZTF )

Now it is 15.9 mag (Apr. 10, Michael Jager). 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)  
Apr. 16  20 14.19    9 41.7   3.877   3.813    78   15.8   3:58 (295, 45)  
Apr. 23  20 14.41   11 18.9   3.700   3.739    84   15.6   3:47 (297, 50)

* C/2021 U5 ( Catalina )

Now it is 15.7 mag (Mar. 28, ATLAS-MLO, Mauna Loa). It continues brightening even after the perihelion passage. It is observable at 15 mag in good condition for a while. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 16  10 26.69    0 27.3   1.737   2.521   131   15.6  20:49 (  0, 55)  
Apr. 23  10 31.32    2 33.2   1.827   2.549   125   15.7  20:26 (  0, 58)

* C/2020 H6 ( ATLAS )

Now it is 15.7 mag (Apr. 10, Michael Jager). It stays observable at 16 mag from 2021 to 2022. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 16  16 14.69   34 15.8   4.350   4.953   121   15.8   2:40 (  0, 89)  
Apr. 23  16 11.35   35 55.1   4.354   4.971   122   15.8   2:09 (180, 89)

* (3200) Phaethon

It approaches to Sun down to 0.14 a.u. on May 15. But it is 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)  
Apr. 16   3 23.96   18  8.9   1.576   0.829    27   16.3  20:01 (107,  8)  
Apr. 23   3 38.30   17 55.1   1.470   0.687    24   15.8  20:09 (110,  3)

* 325P/Yang-Gao

Now it is 19.2 mag (Mar. 28, Slooh.com Chile Observatory). It was expected to be observable at 16 mag in good condition in spring. But actually, it is fainter than predicted by 3 mag. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 16  20  2.25  -21 49.3   1.085   1.445    87   16.1   3:58 (322, 23)  
Apr. 23  20 18.93  -19  0.3   1.057   1.458    89   16.1   3:47 (321, 25)

* 4P/Faye

It brightened up to 10.6 mag in autumn (Oct. 10, Osamu Miyazaki). Now it is fading. It has already faded down to 14.4 mag (Apr. 4, Toshihiko Ikemura, Hirohisa Sato). It stays observable in good condition for a long time. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 16   7 19.87   14 50.9   2.514   2.604    83   16.2  20:01 ( 66, 53)  
Apr. 23   7 29.19   14 52.7   2.644   2.647    79   16.5  20:09 ( 72, 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 faded down to 12.7 mag in autumn (Nov. 22, Thomas Lehmann). In the Southern Hemisphere, it is appearing in the morning sky. In the Northern Hemisphere, it is not observable until June when the comet will fade down to 17 mag. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 16  22 34.48  -30 41.9   4.136   3.727    59   16.3   3:58 (303, -6)  
Apr. 23  22 42.36  -30 45.0   4.112   3.786    64   16.4   3:47 (304, -5)

* C/2020 PV6 ( PanSTARRS )

Now it is 16.4 mag (Mar. 22, Thomas Lehmann). It will be fading after this. In the Northern Hemisphere, it stays observable in good condition for a long time. It locates low in the Southern Hemisphere. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 16  12 43.20   45 11.3   2.480   3.149   123   16.5  23:03 (180, 80)  
Apr. 23  12 20.95   44 19.0   2.588   3.198   118   16.7  22:14 (180, 81)

* C/2020 O2 ( Amaral )

Now it is 16.6 mag (Apr. 12, 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)  
Apr. 16  18 47.50   16  1.9   4.936   5.181    98   16.6   3:58 (314, 65)  
Apr. 23  18 47.08   17 36.7   4.874   5.200   103   16.6   3:47 (320, 68)

* 152P/Helin-Lawrence

Now it is 17.1 mag (Apr. 2, A. Maury, G. Attard, D. Parrott). 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)  
Apr. 16  19 41.22  -21 56.5   2.930   3.135    92   16.6   3:58 (327, 26)  
Apr. 23  19 46.61  -22  0.6   2.841   3.141    97   16.6   3:47 (330, 27)

* 70P/Kojima

Now it is 16.1 mag (Apr. 2, Masayoshi Yoshimi). 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)  
Apr. 16  11 22.27   13 58.4   1.537   2.388   139   16.6  21:44 (  0, 69)  
Apr. 23  11 22.11   13 45.9   1.619   2.417   132   16.8  21:17 (  0, 69)

* 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)  
Apr. 16  23 34.72  -16 55.0   4.258   3.550    40   16.6   3:58 (284,-10)  
Apr. 23  23 43.04  -16 18.6   4.213   3.568    44   16.6   3:47 (284, -8)

* C/2020 S4 ( PanSTARRS )

Now it is 17.1 mag (Apr. 2, D. Buczynski). It will brighten up to 14 mag in early 2023. It becomes unobservable temporarily in May. But it will appear in the morning sky again in August. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 16   4 55.08   12 11.7   4.933   4.342    49   16.6  20:01 ( 89, 23)  
Apr. 23   5  1.73   12 47.1   4.970   4.303    43   16.6  20:09 ( 94, 17)

* 402P/2020 Q3 ( LINEAR )

First return of a new periodic comet observed at 16 mag from 2003 to 2004. Now it is 16.6 mag (Apr. 9, Hirohisa Sato). It will be unobservable in June. But it will become observable again at 17 mag from autum to winter. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 16   6 26.32   16  5.2   4.215   4.000    70   16.6  20:01 ( 79, 43)  
Apr. 23   6 32.39   16 39.0   4.319   4.007    65   16.7  20:09 ( 84, 38)

* C/2022 F2 ( NEOWISE )

Now it is 16.4 mag (Apr. 15, ATLAS Chile). It stays observable at 16-17 mag in April. However, it will fade out rapidly, and it will be fainter than 18 mag in late May. It is observable in excellent condition in the Southern Hemisphere. It is not observable at all in the Northern Hemisphere. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 16  20 20.33  -78 54.8   1.140   1.615    97   16.9   3:58 (352,-26)  
Apr. 23   0 51.32  -85 21.9   1.159   1.635    97   17.0   3:47 (354,-36)

* C/2020 F2 ( ATLAS )

Now it is 16.9 mag (Apr. 12, 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)  
Apr. 16  14  2.83    0 59.3   7.852   8.833   167   16.9   0:29 (  0, 56)  
Apr. 23  13 58.14    1 31.2   7.851   8.831   166   16.9  23:52 (  0, 56)

* 99P/Kowal 1

Now it is 16.7 mag (Mar. 25, F. Kugel, J.-G. Bosch, J. Nicolas). It stays 17 mag for a while. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 16  13 24.99   -8 26.6   3.704   4.706   177   17.0  23:46 (  0, 46)  
Apr. 23  13 21.53   -8 10.7   3.715   4.706   169   17.0  23:15 (  0, 47)

* C/2019 O3 ( Palomar )

Now it is 16.7 mag (Apr. 3, Catalina Sky Survey). 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)  
Apr. 16  19 23.87   60  0.0   9.194   9.124    82   17.0   3:58 (207, 59)  
Apr. 23  19 22.28   61  4.0   9.187   9.134    83   17.0   3:47 (202, 60)

* C/2020 F7 ( Lemmon )

Now it is 17.4 mag (Apr. 7, 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. In the Northern Hemisphere, it locates extremely low, and it is observable only until April. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 16   6 40.50  -42 47.4   5.412   5.451    86   17.1  20:01 ( 31,  2)  
Apr. 23   6 40.09  -42 17.1   5.477   5.462    83   17.1  20:09 ( 37, -2)

* 110P/Hartley 3

It brightened rapidly up to 14.5 mag in winter (Feb. 9, Toshiyuki Takahashi). Now it is fading rapidly. It has already faded down to 17.0 mag (Mar. 30, D. Buczynski). It will be fainter than 18 mag in May. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 16   8 10.26   11 56.5   2.381   2.685    96   17.1  20:01 ( 46, 59)  
Apr. 23   8 16.74   11 34.3   2.486   2.701    91   17.3  20:09 ( 56, 55)

* C/2021 G2 ( ATLAS )

Now it is 16.8 mag (Apr. 16, 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)  
Apr. 16   7 12.83  -26 54.9   8.063   8.118    89   17.1  20:01 ( 34, 19)  
Apr. 23   7 14.78  -26 25.2   8.100   8.080    85   17.1  20:09 ( 41, 15)

* C/2020 U5 ( PanSTARRS )

Now it is 16.8 mag (Apr. 6, Ken-ichi Kadota). 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)  
Apr. 16   0 13.37   75 27.1   4.043   3.757    66   17.4   3:58 (197, 31)  
Apr. 23   0 17.07   75 56.3   4.067   3.756    65   17.4   3:47 (196, 32)

* 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 17.3 mag (Apr. 13, 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)  
Apr. 16  16 22.38   67 50.0   6.667   6.857    96   17.5   2:47 (180, 57)  
Apr. 23  16  9.25   68 38.7   6.720   6.896    95   17.5   2:06 (180, 56)

* C/2022 A2 ( PanSTARRS )

Now it is 17.5 mag (Apr. 9, Ken-ichi Kadota). 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)  
Apr. 16  10 47.61   -4 15.2   3.200   4.003   138   17.5  21:09 (  0, 51)  
Apr. 23  10 41.96   -2 22.2   3.220   3.938   129   17.5  20:36 (  0, 53)

* 61P/Shajn-Schaldach

It has not been observed yet in this apparition. appearing in the morning sky. It will brighten up to 15 mag in autumn, and it will be observable in good condition. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 16  22 35.71   -6 52.6   3.113   2.549    47   17.6   3:58 (284,  8)  
Apr. 23  22 47.41   -5 49.6   3.023   2.523    51   17.5   3:47 (284,  9)

* C/2020 P3 ( ATLAS )

Now it is 17.6 mag (Apr. 10, Ken-ichi Kadota). 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)  
Apr. 16  11 55.10   69 42.9   6.993   7.210    98   17.6  22:17 (180, 55)  
Apr. 23  11 48.36   68 53.7   7.060   7.225    95   17.6  21:42 (180, 56)

* C/2021 C5 ( PanSTARRS )

Now it is 17.7 mag (Apr. 6, 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 is observable only until May. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 16   9 39.78  -16 24.7   3.659   4.282   122   17.6  20:02 (  0, 38)  
Apr. 23   9 37.55  -16 23.9   3.700   4.242   116   17.6  20:09 ( 11, 38)

* A/2021 X1

Now it is 16.7 mag (Mar. 25, F. Kugel, J.-G. Bosch, J. Nicolas). It will brighten up to 15-16 mag in 2023. Cometary activity was detected by Cristovao Jacques on Dec. 12, and by Luca Buzzi and Andrea Aletti on Feb. 23. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 16   6 18.11  -14 32.0   5.105   4.928    74   17.7  20:01 ( 53, 21)  
Apr. 23   6 17.17  -13 42.9   5.160   4.883    68   17.7  20:09 ( 60, 16)

* C/2017 Y2 ( PanSTARRS )

Now it is 17.1 mag (Feb. 28, Hidetaka Sato). It was observed at 16 mag from 2020 to 2021. Now it is fading. It will be fainter than 18 mag in May. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 16  14 44.88  -42 27.2   5.343   6.184   144   17.7   1:11 (  0, 12)  
Apr. 23  14 35.38  -42 32.6   5.336   6.218   148   17.7   0:34 (  0, 12)

* 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)  
Apr. 16  22 23.21   15 19.1   7.240   6.598    47   17.8   3:58 (267, 23)  
Apr. 23  22 24.74   15 21.0   7.182   6.619    52   17.8   3:47 (269, 26)

* C/2018 N2 ( ASASSN )

Now it is 18.0 mag (Apr. 12, Ken-ichi Kadota). In the Northern Hemisphere, it stays observable for a long time while it is getting fainter slowly. It locates extremely low in the Southern Hemisphere. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 16  14 18.22   47 23.5   7.592   8.167   121   17.8   0:44 (180, 78)  
Apr. 23  14 12.87   47 20.4   7.661   8.214   120   17.8   0:11 (180, 78)

* C/2022 E2 ( ATLAS )

Now it is 17.5 mag (Mar. 31, J. McCormick). 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)  
Apr. 16  10  2.65  -27 16.3   7.404   8.050   127   17.9  20:25 (  0, 28)  
Apr. 23   9 59.80  -26 22.8   7.430   8.006   121   17.9  20:09 (  4, 28)

* C/2019 E3 ( ATLAS )

Now it is 17.2 mag (Apr. 11, 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)  
Apr. 16   7 28.85  -65 11.3  10.573  10.764    98   17.9  20:01 ( 14,-13)  
Apr. 23   7 27.47  -64 41.9  10.575  10.754    97   17.9  20:09 ( 17,-15)

* 274P/Tombaugh-Tenagra

Now it is 17.4 mag (Mar. 30, D. Buczynski). It is observable in good condition in the Northern Hemisphere, but it locates low in the Southern Hemisphere. It will be fainter than 18 mag soon. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 16   6 36.44   33  0.1   2.564   2.454    72   17.9  20:01 (100, 53)  
Apr. 23   6 49.19   32 55.5   2.643   2.455    68   18.0  20:09 (102, 48)

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