Weekly Information about Bright Comets (2020 Apr. 11: North)

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 Updated on April 14, 2020
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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/2020 F8 ( SWAN )

Bright new comet. Now it is 7.9 mag (Apr. 12, Chris Wyatt). It will approach to Sun down to 0.43 a.u. in May, and it is expected to brighten up to 3.5 mag. In the Southern Hemisphere, it stays observable in good condition until mid May. In the Northern Hemisphere, it is only visible in extremely low sky in late May. Then it appears in the morning sky at 11.5 mag in August. And it will be observable in good condition after that while the comet will be fading. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 11  22 56.41  -37 48.8   1.332   1.148    56    8.7   4:05 (305,-16)  
Apr. 18  23 12.54  -33 18.2   1.122   1.021    57    7.8   3:54 (301,-14)

* C/2017 T2 ( PanSTARRS )

Now it is 7.8 mag (Apr. 2, Charles S. Morris). It stays bright as 8-9 mag until July. It is observable in good condition in the Northern Hemisphere. In the Southern Hemisphere, it is not observable until July. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 11   3 41.12   71 48.8   1.753   1.647    67    8.3  19:57 (158, 35)  
Apr. 18   4 21.49   73 50.7   1.738   1.631    66    8.2  20:04 (160, 36)

* C/2019 Y4 ( ATLAS )

Now it is 9.0 mag (Apr. 12, Edwin van Dijk). The nucleus was split into some fragments in late March, and the brightness evolution stopped. It brightened up to 7.0 mag in late March ((Mar. 30, Charles S. Morris). However, it is fading now. It moves along the same orbit as C/1844 Y1 (Great Comet). It approaches to Sun down to 0.25 a.u. on May 31. It was expected to brighten up to -1 mag. But it may disappear before the perihelion passage. In the Northern Hemisphere, it stays observable in excellent condition until mid May. In the Southern Hemisphere, it is not observable until June. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 11   6 48.93   67  3.3   1.012   1.287    79    8.8  19:57 (158, 52)  
Apr. 18   6 12.15   65  7.2   0.987   1.150    70    9.2  20:04 (150, 46)

* C/2019 Y1 ( ATLAS )

Now it is very bright as 8.3 mag (Apr. 2, Maik Meyer). It stays bright as 8-9 mag until mid April. It stays observable for a long time in the Northern Hemisphere. In the Southern Hemisphere, it is not observable until June when it fades down to 15 mag. It seems to be a fragment of C/1988 A1 (Liller), like C/1996 Q1 (Tabur) and C/2015 F3 (SWAN). 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 11   0 34.76   58 13.2   1.220   0.970    50    9.1   4:05 (213, 21)  
Apr. 18   0 57.99   67  0.8   1.163   1.039    56    9.7   3:54 (204, 25)

* 58P/Jackson-Neujmin

Recovered from SWAN images after 24-year blank. Now it is very bright as 10.7 mag (Apr. 7, Michael Mattiazzo). It stays 10-11 mag until August. In the Southern Hemisphere, it stays observable in the morning sky for a long time. In the Northern Hemisphere, it is too low to observe until July. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 11  23 10.11   -3  0.5   2.204   1.483    33   11.0   4:05 (274,  1)  
Apr. 18  23 32.73   -1 23.0   2.159   1.455    34   10.7   3:54 (272,  1)

* C/2019 U6 ( Lemmon )

Now it is very bright as 11.5 mag (Mar. 30, Marco Goiato). It will approach to Sun down to 0.9 a.u. in June, and it is extected to brighten up to 7.5 mag. In the Southern Hemisphere, it stays observable in good condition for a long time after this. In the Northern Hemisphere, it will be unobservable from late March to late June. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 11   4 32.19  -23  6.8   1.777   1.487    56   11.8  19:57 ( 60,  1)  
Apr. 18   4 44.13  -22 47.0   1.703   1.401    55   11.4  20:04 ( 64, -3)

* 210P/Christensen

Now it is 11.9 mag (Apr. 11, Roland Fichtl). It appeared in the evening sky in the Northern Hemisphere. It will appear in the evening sky at 15 mag in mid May also in the Southern Hemisphere. However, it will fade out rapidly, and will be fainter than 18 mag in June. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 11   2 46.28   15 47.1   1.291   0.532    22   11.8  19:57 (107,  4)  
Apr. 18   3 34.51   20 53.0   1.201   0.571    28   12.1  20:04 (109,  9)

* C/2018 N2 ( ASASSN )

Now it is 13.2 mag (Mar. 23, Thomas Lehmann). It stays bright as 12-13 mag until June. But it becomes low in spring. In the Southern Hemisphere, it will never be observable again. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 11   0 38.81   56 16.1   4.032   3.452    48   13.5   4:05 (214, 19)  
Apr. 18   0 47.39   58 10.7   4.062   3.480    48   13.6   3:54 (213, 21)

* 88P/Howell

Now it is 14.6 mag (Mar. 22, Thomas Lehmann). Brightening very rapidly. It will brighten up to 8-9 mag from summer to autumn. It will be observable in excellent condition in the Southern Hemisphere. It locates very low around the high light in the Northern Hemisphere. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 11  13 18.69   -3  4.9   1.169   2.169   174   13.9   0:02 (  0, 52)  
Apr. 18  13 10.92   -2 29.9   1.129   2.122   168   13.6  23:22 (  0, 52)

* 29P/Schwassmann-Wachmann 1

Now it is not observable. It will appear in the morning sky in June. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 11   1 31.74   17 57.6   6.781   5.797    10   13.9  19:57 (120, -9)  
Apr. 18   1 37.37   18 29.7   6.791   5.798     7   13.9   3:54 (237,-12)

* C/2019 N1 ( ATLAS )

Now it is 14.4 mag (Mar. 15, Sandor Szabo). It will brighten up to 10.5 mag from 2020 December to 2021 January. In the Northern Hemisphere, it stays observable in good condition while the comet will be brightening gradually, but it is not observable at the high light. In the Southern Hemisphere, it is not observable for a long time, but it will be observable in good condition after the high light. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 11  18  0.89   76 47.5   3.235   3.324    86   14.3   4:05 (183, 48)  
Apr. 18  17 27.54   78 30.3   3.175   3.259    85   14.1   3:42 (180, 47)

* 246P/NEAT

Now it is 14.7 mag (Mar. 15, Sandor Szabo). It stays 13-14 mag from 2020 to 2021. It stays observable in good condition for a while. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 11  12 49.84   17 36.9   2.379   3.304   153   14.2  23:29 (  0, 73)  
Apr. 18  12 45.00   17 41.2   2.393   3.288   147   14.2  22:57 (  0, 73)

* C/2020 F3 ( NEOWISE )

Now it is 14.6 mag (Mar. 31, Katsumi Yoshimoto). It will approach to Sun down to 0.29 a.u. on July 3, and it will brighten up to 6 mag. In the Southern Hemisphere, it stays observable in good condition until early June when it brightens up to 11 mag. But it will not be observable around the perihelion passage. In the Northern Hemisphere, it locates in extremely low sky in early April, but it will be unobservable soon. It will appear in the evening sky at 7 mag in mid July, then it stays observable while getting fainter. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 11   6 30.64  -38 19.9   1.636   1.856    85   14.8  19:57 ( 32,  7)  
Apr. 18   6 21.65  -32 57.8   1.624   1.740    79   14.5  20:04 ( 42,  6)

* C/2018 F4 ( PanSTARRS )

Now it is bright as 14.1 mag (Mar. 20, Chris Wyatt). It stays 15 mag until summer. It stays observable for a long time in the Southern Hemisphere. It is not observable until August in the Northern Hemisphere. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 11   2 15.82  -45 45.7   4.112   3.640    55   14.6  19:57 ( 55,-34)  
Apr. 18   2 23.15  -44  4.6   4.134   3.662    55   14.7  20:04 ( 58,-38)

* C/2020 A2 ( Iwamoto )

It brightened up to 10.2 mag in February (Feb. 6, Maik Meyer). Now it is fading rapidly. It has already faded down to 13.4 mag (Mar. 15, Sandor Szabo). It is observable in good condition in the Northern Hemisphere. In the Southern Hemisphere, it is only visible in the extremely low sky in spring. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 11   5 46.19   44 32.4   1.926   1.804    67   14.8  19:57 (120, 49)  
Apr. 18   5 56.55   41 22.5   2.126   1.890    62   15.3  20:04 (116, 44)

* C/2019 F1 ( ATLAS-Africano )

Now it is 15.8 mag (Mar. 18, Toshihiko Ikemura, Hirohisa Sato). It will brighten up to 13 mag in 2021. In 2020, it is observable at 15 mag in good condition from spring to summer. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 11  14 45.72  -18 58.7   4.317   5.251   156   15.4   1:29 (  0, 36)  
Apr. 18  14 40.85  -19 21.3   4.236   5.209   163   15.3   0:57 (  0, 36)

* 2P/Encke

It will approach to Sun down to 0.34 a.u. and brighten up to 7 mag in June. In the Southern Hemisphere, it will appear in the evening sky at 7 mag in early July. Then it stays observable in good condition while the comet will be fading. In the Northern Hemisphere, it is not observable until mid August when the comet will fade down to 12 mag. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 11   1 22.78   14 46.1   2.491   1.499     6   16.2  19:57 (119,-13)  
Apr. 18   1 39.25   16 21.9   2.399   1.404     5   15.4   3:54 (239,-13)

* C/2020 F5 ( MASTER )

Now it is 15.6 mag (Apr. 5, iTelescope Observatory, Siding Spring). It stays 14-15 mag until 2021. In the Southern Hemisphere, it stays observable in good condition for a long time. In the Northern Hemisphere, it is not observable until June in 2021. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 11  17 16.28  -79 37.6   4.842   5.168   103   15.6   4:01 (  0,-25)  
Apr. 18  17 18.06  -80 39.7   4.766   5.138   106   15.5   3:36 (  0,-26)

* C/2017 K2 ( PanSTARRS )

Now it is 15.6 mag (Mar. 20, Toshihiko Ikemura, Hirohisa Sato). It is expected to be observable at 5-6 mag for a long time from 2022 to 2023. In the Northern Hemisphere, it is not observable at the high light from 2022 summer to 2023 summer. In the Southern Hemisphere, it is only visible in the extremely low sky in summer in 2020. But it will be observable in good condition at the high light. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 11  18 17.96   50 37.1   9.304   9.410    93   15.6   4:05 (208, 71)  
Apr. 18  18 16.49   51  9.0   9.221   9.360    94   15.5   3:54 (200, 73)

* 390P/2019 U1 ( Gibbs )

First return of a new periodic comet discovered in 2006. It brightened up to 14.9 mag in January (Jan. 21, R. Fichtl). It will never be observable after this. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 11   2  5.24    1 28.3   2.673   1.714    13   15.6  19:57 (102,-13)  
Apr. 18   2 24.79    2 51.4   2.690   1.725    12   15.7  20:04 (105,-16)

* C/2019 K7 ( Smith )

Now it is 16.0 mag (Dec. 4, Kunihiro Shima). It stays 15-16 mag for a long time until 2021. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 11  20 54.82   -0 52.8   4.815   4.508    66   16.0   4:05 (294, 29)  
Apr. 18  20 54.81    0 30.2   4.697   4.501    72   15.9   3:54 (296, 33)

* C/2018 A6 ( Gibbs )

Now it is 14.6 mag (Dec. 28, Chris Wyatt). It will be fading slowly after this. In the Southern Hemisphere, it becomes low from February to March, but it stays observable for a long time. In the Northern Hemisphere, it is not observasble until June. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 11  23 50.14  -34 54.7   4.418   3.821    48   16.2   4:05 (297,-24)  
Apr. 18  23 54.69  -34  0.4   4.395   3.856    51   16.2   3:54 (297,-21)

* C/2018 U1 ( Lemmon )

Now it is 17.2 mag (Mar. 20, Toshihiko Ikemura, Hirohisa Sato). It will stay at 14 mag for a long time from 2021 to 2022. In the Northern Hemisphere, it stays observable in good condition while brightening gradually. In the Southern Hemisphere, it is appearing in the morning sky. But it stays locating low for a long time. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 11  19 14.47   32 23.2   6.562   6.576    86   16.4   4:05 (268, 67)  
Apr. 18  19 12.83   32 48.6   6.454   6.544    90   16.3   3:54 (270, 71)

* C/2016 M1 ( PanSTARRS )

It brightened up to 7.7 mag in June in 2018 (June 19, Juan Jose Gonzalez). Now it is fading. It has already faded down to 16.4 mag (Mar. 20, Toshihiko Ikemura, Hirohisa Sato). In the Southern Hemisphere, it stays observable for a long time until the comet will fade out. In the Northern Hemisphere, it stays low for a while. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 11   5 35.95  -16 25.0   6.722   6.419    68   16.4  19:57 ( 55, 17)  
Apr. 18   5 38.31  -15 31.8   6.857   6.473    63   16.5  20:04 ( 62, 12)

* C/2019 C1 ( ATLAS )

Now it is 16.1 mag (Mar. 18, Toshihiko Ikemura, Hirohisa Sato). It stays observable at 16-17 mag from 2020 to 2021. It locates somewhat low in the Northern Hemisphere. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 11  10 41.43  -21  6.5   5.784   6.583   140   16.5  21:21 (  0, 34)  
Apr. 18  10 40.89  -20 25.0   5.835   6.582   134   16.5  20:53 (  0, 35)

* P/2019 Y2 ( Fuls )

Now it is 16.4 mag (Mar. 19, Thomas Lehmann). It brightens up to 16.5 mag and will be observable in good condition from March to April. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 11  13 15.33    0 36.9   1.190   2.185   171   16.6  23:54 (  0, 56)  
Apr. 18  13 10.62    0 47.7   1.210   2.197   165   16.6  23:22 (  0, 56)

* C/2017 M4 ( ATLAS )

It brightened up to 12-13 mag from 2018 to 2019. Now it is fading. It has already faded down to 16.5 mag (Mar. 8, J. Drummond). In the Southern Hemisphere, it stays observable in good condition for a long time. It will never be observable after this in the Northern Hemisphere. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 11  10  8.90  -73 58.8   4.800   5.211   108   16.6  20:47 (  0,-19)  
Apr. 18   9 50.30  -72 33.5   4.837   5.257   109   16.6  20:04 (  0,-18)

* 124P/Mrkos

Now it is 16.1 mag (Mar. 18, Toshihiko Ikemura, Hirohisa Sato). It stays observable at 16 mag in good condition until April. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 11  10  0.58   17 43.2   0.865   1.654   124   16.6  20:40 (  0, 72)  
Apr. 18   9 59.13   13 32.5   0.909   1.650   119   16.7  20:12 (  0, 68)

* C/2017 U7 ( PanSTARRS )

Now it is 15.8 mag (Mar. 1, iTelescope Observatory, Siding Spring). It is observable at 16.5 mag in 2020. 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)  
Apr. 11  20  8.82  -29 57.6   6.616   6.577    83   16.6   4:05 (324, 14)  
Apr. 18  20  6.84  -29 53.8   6.500   6.588    90   16.6   3:54 (327, 16)

* 249P/LINEAR

Now it is 18.3 mag (Mar. 18, Catalina Sky Survey). It will brighten rapidly, and will brighten up to 9.5 mag in June. It is not observable in June. However, it stays observable in good condition until May while the comet is brightening, and after July while the comet will be fading. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 11  10 19.22   -7 34.4   0.607   1.497   135   17.0  20:58 (  0, 48)  
Apr. 18   9 58.11   -4 37.4   0.573   1.405   123   16.7  20:09 (  0, 50)

* C/2019 K1 ( ATLAS )

Now it is 16.4 mag (Feb. 28, iTelescope Observatory, Siding Spring). It started getting fainter before the perihelion passage. It seems to be fainter than 18 mag in June. In the Southern Hemisphere, it will be too low to observe soon. It is not observable in the Northern Hemisphere. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 11   3 40.70  -31 18.7   2.593   2.131    52   16.7  19:57 ( 61,-13)  
Apr. 18   3 52.72  -27 40.0   2.674   2.160    49   16.8  20:04 ( 67,-15)

* C/2019 L3 ( ATLAS )

Now it is 17.4 mag (Jan. 24, Thomas Lehmann). It will brighten up to 12 mag in winter in 2022. In the Northern Hemisphere, it stays observable in good condition for a long time. In the Southern Hemisphere, it is not observable until 2021 November. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 11  23 38.66   44 52.0   7.197   6.494    42   16.9   4:05 (229, 21)  
Apr. 18  23 45.04   45 37.7   7.145   6.449    43   16.9   3:54 (229, 23)

* C/2018 W2 ( Africano )

It brightened up to 8.3 mag in September (Sept. 20, Maik Meyer). Now it is fading. It has already faded down to 14.9 mag (Dec. 28, Chris Wyatt). In the Southern Hemisphere, it stays observable for a long time 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)  
Apr. 11   0 23.15  -56  2.4   3.456   3.172    65   17.0   4:05 (318,-36)  
Apr. 18   0 35.90  -57 28.3   3.450   3.242    69   17.1   3:54 (320,-36)

* 115P/Maury

Now it is 17.6 mag (Mar. 22, Toshihiko Ikemura, Hirohisa Sato). It will brighten up to 15.5 mag from June to August, and it will be observable in good condition. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 11  18 42.58   -9  4.0   1.855   2.259   100   17.2   4:05 (333, 42)  
Apr. 18  18 51.38   -8  9.8   1.762   2.235   104   17.0   3:54 (335, 44)

* 87P/Bus

Now it is 16.3 mag (Mar. 20, Toshihiko Ikemura, Hirohisa Sato). It will brighten up to 17 mag and will be observable in excellent condition from March to May. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 11  12 43.44   -3 21.8   1.116   2.110   169   17.0  23:23 (  0, 52)  
Apr. 18  12 39.88   -2 45.9   1.128   2.106   162   17.0  22:52 (  0, 52)

* 257P/Catalina

It will brighten up to 15.5 mag and will be observable in good condition from June to September. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 11  19 41.32   -1 50.9   2.309   2.430    84   17.1   4:05 (311, 41)  
Apr. 18  19 50.36   -0 22.5   2.211   2.407    88   17.0   3:54 (312, 43)

* C/2019 T4 ( ATLAS )

Now it is 17.4 mag (Feb. 23, Toshihiko Ikemura, Hirohisa Sato). It is expected to brighten up to 13 mag in 2022. In 2020, it is observable in excellent condition in the Southern Hemisphere. In the Northern Hemisphere, it will be unobservable soon. It will be observable again from autumn to winter, but it locating extremely low. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 11   6 15.07  -29 12.5   7.583   7.482    80   17.1  19:57 ( 40, 13)  
Apr. 18   6 17.86  -28 36.7   7.606   7.441    76   17.1  20:04 ( 46,  9)

* (944) Hidalgo

Now it is 17.6 mag (Feb. 3, ATLAS-HKO, Haleakala). It brightened up to 14 mag from autumn to winter in 2018. Now it is fading. It is observable at 17.5 mag in good condition from winter to spring. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 11  13  9.16   -3  2.6   3.739   4.738   174   17.2  23:48 (  0, 52)  
Apr. 18  13  3.67   -3  0.4   3.792   4.776   167   17.4  23:15 (  0, 52)

* C/2017 Y2 ( PanSTARRS )

Now it is 17.5 mag (Mar. 20, Toshihiko Ikemura, Hirohisa Sato). It will be observable at 16.5-17 mag from spring in 2020 to summer in 2021. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 11  20  0.80   21 57.5   5.042   4.918    77   17.3   4:05 (280, 53)  
Apr. 18  19 58.51   22 23.5   4.924   4.899    82   17.2   3:54 (283, 57)

* C/2010 U3 ( Boattini )

Now it is 18.3 mag (Mar. 22, Toshihiko Ikemura, Hirohisa Sato). It will be fading slowly after this. It is observable in good condition in the Northern Hemisphere. In the Southern Hemisphere, it is observable in the extremely low sky only in 2021 spring. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 11  12 58.99   55 47.7   8.301   8.783   115   17.3  23:38 (180, 69)  
Apr. 18  12 54.89   55 29.3   8.355   8.795   112   17.3  23:06 (180, 70)

* C/2020 F2 ( ATLAS )

Now it is 17.3 mag (Mar. 24, Toshihiko Ikemura, Hirohisa Sato). It stays observable at 16-17 mag for a long time until 2024. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 11  16 21.10  -19  1.8   9.282  10.011   134   17.3   3:04 (  0, 36)  
Apr. 18  16 17.67  -18 46.7   9.179   9.992   142   17.3   2:33 (  0, 36)

* 114P/Wiseman-Skiff

It brightened up to 13.8 mag in 2019 winter (Dec. 21, Thomas Lehmann). Now it is fading. It has already faded down to 17.2 mag (Mar. 18, Toshihiko Ikemura, Hirohisa Sato). It will be fainter than 18 mag in May. In the Northern Hemisphere, it is observable in excellent condition. It locates low in the Southern Hemisphere. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 11   6 33.38   10 29.1   1.736   1.806    77   17.3  19:57 ( 66, 46)  
Apr. 18   6 49.80    9 50.0   1.826   1.839    74   17.6  20:04 ( 70, 42)

* 117P/Helin-Roman-Alu 1

Now it is 17.4 mag (Mar. 18, Toshihiko Ikemura, Hirohisa Sato). It will brighten up to 13 mag in 2022. In 2020, it is observable at 17.5 mag in good condition in spring. It locates somewhat low in the Southern Hemisphere. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 11  10 10.38   22  4.2   3.815   4.463   124   17.6  20:50 (  0, 77)  
Apr. 18  10  9.07   21 55.4   3.892   4.450   117   17.6  20:21 (  0, 77)

* C/2017 K5 ( PanSTARRS )

Now it is 17.8 mag (Oct. 9, Toshihiko Ikemura, Hirohisa Sato). It stays observable at 18 mag for a long time from 2019 to 2021. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 11  19 18.12  -15  7.9   7.574   7.679    92   17.8   4:05 (326, 33)  
Apr. 18  19 18.23  -15 29.3   7.457   7.680    99   17.8   3:54 (331, 34)

* C/2014 F3 ( Sheppard-Trujillo )

It will pass the perihelion in 2021, and it is predicted to be observable at 17-18 mag from 2020 to 2022. However, it has not been observed at all since 2015. It was not detected, fainter than 20.5 mag, in 2017 May (Werner Hasubick). 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 11  20 28.65  -22 34.8   6.271   6.130    77   17.9   4:05 (315, 17)  
Apr. 18  20 31.89  -22 23.9   6.149   6.116    83   17.8   3:54 (318, 20)

* 28P/Neujmin 1

Now it is 18.5 mag (Feb. 29, iTelescope Observatory, Siding Spring). It will brighten up to 15.5 mag in early 2021. In 2020, it stays observable at 17 mag until November in the Southern Hemisphere, or until July in the Northern Hemisphere. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 11  14 55.73  -33 17.2   2.897   3.773   146   18.0   1:39 (  0, 22)  
Apr. 18  14 50.66  -33 27.4   2.799   3.720   152   17.8   1:07 (  0, 21)

* C/2014 B1 ( Schwartz )

It brightened up to 15.5 mag from 2017 to 2018. Now it is fading. It has already faded down to 17.7 mag (Mar. 20, Toshihiko Ikemura, Hirohisa Sato). It will be fainter than 18 mag in late April. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 11  12 34.58   10 57.0   9.941  10.876   157   17.9  23:14 (  0, 66)  
Apr. 18  12 33.22   11 10.0   9.999  10.894   151   17.9  22:45 (  0, 66)

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