Weekly Information about Bright Comets (2020 Jan. 25: North)

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 Updated on January 26, 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/2017 T2 ( PanSTARRS )

Now it is 9.5 mag (Jan. 23, Maik Meyer). It brightens up to 8 mag in spring, and 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)  
Jan. 25   2 26.09   57 30.8   1.595   2.094   106    9.1  18:48 (167, 66)  
Feb.  1   2 16.19   57 58.7   1.627   2.038    99    9.0  18:54 (156, 63)

* C/2018 N2 ( ASASSN )

Now it is 12.5 mag (Jan. 21, Maik Meyer). It stays bright as 12-13 mag until summer. 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)  
Jan. 25  23 33.60   41 30.9   3.326   3.208    74   12.2  18:48 (116, 49)  
Feb.  1  23 36.80   42 18.5   3.419   3.224    70   12.2  18:54 (118, 43)

* C/2019 Y1 ( ATLAS )

Bright new comet. Now it is 12.4 mag and visible visually (Jan. 14, Alan Hale). It approaches to Sun down to 0.84 a.u. in March, then it brightens up to 11 mag. In the Northern Hemisphere, it stays observable for a long time, although it becomes extremely low in March. In the Southern Hemisphere, it is observable only until late January. 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)  
Jan. 25  23 41.85  -11  8.3   1.657   1.234    47   13.0  18:48 ( 56, 24)  
Feb.  1  23 44.19   -5 45.0   1.654   1.149    42   12.7  18:54 ( 66, 22)

* C/2020 A2 ( Iwamoto )

Bright new comet. Now it is 12.5 mag (Jan. 20, Shigeki Murakami). It stays 13 mag until February. In the Northern Hemisphere, it stays observable in good condition after this. It is not observable in the Southern Hemisphere. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Jan. 25  18  8.57   19 41.4   1.286   1.022    51   13.1   5:36 (267, 32)  
Feb.  1  18 19.19   28 14.6   1.147   1.062    59   13.1   5:32 (260, 38)

* 29P/Schwassmann-Wachmann 1

Now it is 15.2 mag (Jan. 20, Toshihiko Ikemura, Hirohisa Sato). It will be unobservable soon in the Southern Hemisphere. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Jan. 25   0 38.32   13 21.1   6.047   5.787    70   13.6  18:48 ( 66, 51)  
Feb.  1   0 41.98   13 36.4   6.151   5.787    63   13.7  18:54 ( 73, 45)

* C/2018 F4 ( PanSTARRS )

Now it is bright as 13.8 mag (Dec. 28, Chris Wyatt). It stays 14 mag until spring. 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)  
Jan. 25   0 25.67  -72 52.1   3.808   3.473    63   14.1  18:48 ( 12,-21)  
Feb.  1   0 40.52  -69 55.0   3.827   3.483    62   14.1  18:54 ( 15,-19)

* C/2019 K1 ( ATLAS )

In the Southern Hemisphere, it is observable at 14.5 mag from winter to spring. In the Northern Hemisphere, it is not observable until August when it fades down to 17 mag. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Jan. 25  21 26.07  -74 16.3   2.411   2.026    55   14.5  18:48 ( 19,-32)  
Feb.  1  22 41.98  -73 12.2   2.362   2.018    57   14.4  18:54 ( 19,-29)

* 114P/Wiseman-Skiff

Now it is 14.1 mag (Jan. 12, Sandor Szabo). In the Northern Hemisphere, it is observable at 14 mag in excellent condition in winter. It locates low in the Southern Hemisphere. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Jan. 25   3 30.93   19 16.9   0.937   1.583   110   14.9  19:16 (  0, 74)  
Feb.  1   3 46.35   17 54.9   0.992   1.590   107   15.0  19:04 (  0, 73)

* 246P/NEAT

Now it is 16.0 mag (Jan. 1, Toshihiko Ikemura, Hirohisa Sato). It will brighten up to 13.5-14 mag from 2020 to 2021. It stays observable in good condition for a long time after this until 2020 summer. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Jan. 25  13 13.78   12  8.4   3.019   3.493   110   15.3   5:00 (  0, 67)  
Feb.  1  13 15.86   12 30.4   2.914   3.475   117   15.2   4:34 (  0, 67)

* 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)  
Jan. 25  22 28.46  -47 24.5   3.102   2.399    37   15.2  18:48 ( 40,-13)  
Feb.  1  22 37.28  -47 48.6   3.184   2.468    36   15.4  18:54 ( 43,-16)

* 68P/Klemola

Now it is 15.1 mag (Dec. 27, Toshihiko Ikemura, Hirohisa Sato). Fading slowly. It is already unobservable in the Southern Hemisphre. It will be unobservable in early March also in the Northern Hemisphere. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Jan. 25  23 12.06   -6 54.4   2.571   1.956    42   15.3  18:48 ( 65, 22)  
Feb.  1  23 28.84   -5 34.4   2.645   1.985    39   15.5  18:54 ( 69, 19)

* 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 summer in 2020. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Jan. 25  22 37.74  -51 30.0   4.142   3.464    41   15.4  18:48 ( 36,-14)  
Feb.  1  22 45.86  -49 28.1   4.203   3.494    39   15.5  18:54 ( 40,-16)

* 160P/LINEAR

Now it is 14.9 mag (Jan. 20, Toshihiko Ikemura, Hirohisa Sato). It will fade out rapidly after this, and it will be fainter than 18 mag in late March. In the Southern Hemisphere, it is already unobservable. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Jan. 25  23  8.59    2 41.7   2.407   1.855    45   15.4  18:48 ( 73, 27)  
Feb.  1  23 24.42    4 48.8   2.469   1.874    43   15.7  18:54 ( 78, 25)

* 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 14.7 mag (Dec. 31, 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)  
Jan. 25   5 43.84  -29 12.5   5.290   5.814   117   15.5  21:27 (  0, 26)  
Feb.  1   5 39.77  -28  1.3   5.392   5.870   114   15.5  20:55 (  0, 27)

* C/2019 N1 ( ATLAS )

Now it is 15.6 mag (Jan. 4, Toshihiko Ikemura, Hirohisa Sato). 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)  
Jan. 25  18 14.49   61 10.9   4.010   4.038    84   15.6   5:36 (216, 42)  
Feb.  1  18 21.33   61 48.7   3.939   3.974    84   15.5   5:32 (215, 44)

* 2I/2019 Q4 ( Borisov )

Now it is 15.3 mag (Jan. 4, Thomas Lehmann). The orbit is extremely hyperbolic with e=3.35. It is the first interstellar comet in history. It stays 15 mag until January. In the Northern Hemisphere, it will be unobservable in mid January. In the Southern Hemisphere, it is observable in excellent condition. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Jan. 25  12 37.59  -51 27.0   2.030   2.266    90   15.6   4:24 (  0,  4)  
Feb.  1  12 44.78  -55  5.5   2.076   2.341    92   15.8   4:03 (  0,  0)

* C/2017 B3 ( LINEAR )

Now it is 14.8 mag (Dec. 28, Chris Wyatt). Fading slowly. It will be unobservable soon. It will appear in the morning sky in April in the Southern Hemisphere, or in June in the Northern Hemisphere. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Jan. 25  23 18.14  -20 27.2   5.665   4.956    40   15.6  18:48 ( 53, 13)  
Feb.  1  23 22.66  -19 13.9   5.766   4.991    35   15.7  18:54 ( 59,  9)

* 78P/Gehrels 2

Now it is 16.3 mag (Jan. 19, Toshihiko Ikemura, Hirohisa Sato). It will be fading gradually after this. It will be fainter than 18 mag in April. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Jan. 25   9 21.43    6  8.7   2.044   2.993   161   15.8   1:08 (  0, 61)  
Feb.  1   9 15.75    6 36.3   2.054   3.025   168   16.0   0:35 (  0, 61)

* 390P/2019 U1 ( Gibbs )

First return of a new periodic comet discovered in 2006. Now it is 15.8 mag (Nov. 29, Toshihiko Ikemura, Hirohisa Sato). It will brighten up to 15.5 mag in spring. But it is not observable around that time. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Jan. 25  22 35.48  -13 43.3   2.578   1.813    31   15.9  18:48 ( 65, 10)  
Feb.  1  22 53.60  -12 38.7   2.585   1.788    28   15.8  18:54 ( 69,  8)

* 289P/Blanpain

Now it is 16.7 mag (Jan. 21, Toshihiko Ikemura, Hirohisa Sato). It became much brighter than in early January. Now it is passing only 0.1 a.u. from Earth. Michael Jager reported it has a faint coma with a diameter of 50-60 arcsec. It is obesrvable in excellent condition in the Northern Hemisphere. In the Southern Hemisphere, it is not observable until mid February. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Jan. 25   7 50.95   64 17.8   0.133   1.082   134   15.9  23:43 (180, 62)  
Feb.  1   8 51.56   54 36.4   0.175   1.130   142   16.3   0:09 (180, 70)

* 155P/Shoemaker 3

Now it is 15.6 mag (Dec. 27, Toshihiko Ikemura, Hirohisa Sato). It will fade out rapidly after this, and it will be fainter than 18 mag in March. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Jan. 25  11 29.80   12 35.6   1.131   1.958   135   15.9   3:16 (  0, 67)  
Feb.  1  11 30.73   13 11.5   1.116   1.989   142   16.2   2:50 (  0, 68)

* C/2017 K2 ( PanSTARRS )

Now it is 15.3 mag (Jan. 5, 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 stays unobservable for a while. 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)  
Jan. 25  18  1.88   45 43.1  10.202   9.953    72   16.0   5:36 (237, 42)  
Feb.  1  18  5.13   45 57.2  10.130   9.904    74   16.0   5:32 (237, 46)

* C/2017 M4 ( ATLAS )

It will be fading slowly after this. 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)  
Jan. 25  14 26.78  -67 40.8   4.924   4.718    72   16.2   5:36 (356,-13)  
Feb.  1  14 20.42  -69 23.0   4.890   4.762    76   16.2   5:32 (359,-14)

* C/2019 F1 ( ATLAS-Africano )

Now it is 16.9 mag (Jan. 2, Kunihiro Shima). 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)  
Jan. 25  14 58.37  -13 41.5   5.843   5.721    78   16.4   5:36 (338, 39)  
Feb.  1  15  0.23  -14 14.5   5.685   5.677    84   16.3   5:32 (345, 39)

* 101P/Chernykh

Now it is 15.5 mag (Jan. 20, Toshihiko Ikemura, Hirohisa Sato). It will be fading slowly after this. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Jan. 25   1  2.04    1 32.9   2.480   2.347    70   16.4  18:48 ( 47, 46)  
Feb.  1   1 13.23    2 54.0   2.558   2.351    66   16.5  18:54 ( 54, 44)

* C/2010 U3 ( Boattini )

Now it is 17.5 mag (Dec. 28, Toshihiko Ikemura, Hirohisa Sato). It stays 16-17 mag for a long time until 2020. 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)  
Jan. 25  13 30.87   53 55.2   8.231   8.670   113   16.8   5:17 (180, 71)  
Feb.  1  13 30.54   54 19.3   8.198   8.680   116   16.8   4:49 (180, 71)

* 260P/McNaught

It brightened up to 11.4 mag in autumn (Nov. 10, Carlos Labordena). Now it is fading. It has already faded down to 14.8 mag (Dec. 28, Chris Wyatt). It is observable in excellent condition in the Northern Hemisphere. It stays locating extremely low in the Southern Hemisphere. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Jan. 25   3 23.30   40 48.6   1.428   2.027   113   16.9  19:08 (180, 84)  
Feb.  1   3 35.36   40  8.9   1.538   2.075   108   17.3  18:54 (177, 85)

* C/2019 F2 ( ATLAS )

Fading. It is observable at 17 mag in good condition in spring. But it will be fainter than 18 mag in June. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Jan. 25  16 50.86   -8 21.1   3.134   2.663    53   16.9   5:36 (306, 29)  
Feb.  1  17  2.08   -8  1.5   3.103   2.702    57   17.0   5:32 (309, 31)

* C/2018 U1 ( Lemmon )

Now it is 16.7 mag (Dec. 3, D. Buczynski). 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, although it becomes low in December and January. In the Southern Hemisphere, it is not observable until March. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Jan. 25  18 59.44   29 40.8   7.490   6.944    53   17.0   5:36 (251, 26)  
Feb.  1  19  2.47   29 38.4   7.439   6.910    54   16.9   5:32 (253, 30)

* C/2019 Y4 ( ATLAS )

Now it is 18.1 mag (Jan. 5, Toshihiko Ikemura, Hirohisa Sato). It moves along the same orbit as C/1844 Y1 (Great Comet). It approaches to Sun down to 0.25 a.u. on May 30. It is expected to brighten up to 6 mag. In the Northern Hemisphere, it stays observable in excellent condition until mid May when it brightens up to 9 mag. In the Southern Hemisphere, it is observable only until mid February. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Jan. 25  11 51.87   39 10.8   1.785   2.547   131   17.3   3:38 (180, 86)  
Feb.  1  11 49.94   42 17.5   1.645   2.446   135   17.0   3:09 (180, 83)

* A/2019 C1

Asteroid moving along a comet-like orbit. Now it is 16.5 mag (Dec. 27, Toshihiko Ikemura, Hirohisa Sato). It stays observable at 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)  
Jan. 25  10 59.12  -25 20.8   6.042   6.616   121   17.0   2:46 (  0, 30)  
Feb.  1  10 58.05  -25 22.3   5.962   6.612   127   17.0   2:17 (  0, 30)

* C/2015 O1 ( PanSTARRS )

Fading. Now it is 17.6 mag (Dec. 27, Toshihiko Ikemura, Hirohisa Sato). It stays observable in good condition for a while. But it will be fainter than 18 mag in April. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Jan. 25   8 23.65   23 56.0   5.945   6.926   175   17.1   0:11 (  0, 79)  
Feb.  1   8 17.16   23 53.9   6.001   6.970   169   17.2  23:32 (  0, 79)

* 124P/Mrkos

Now it is 17.8 mag (Dec. 28, Toshihiko Ikemura, Hirohisa Sato). It will brighten up to 16 mag in March, and it will be observable in good condition. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Jan. 25  11 59.99   44 12.1   1.074   1.860   129   17.3   3:46 (180, 81)  
Feb.  1  11 55.63   44  8.8   1.007   1.832   133   17.1   3:15 (180, 81)

* 88P/Howell

Now it is 17.7 mag (Jan. 19, Toshihiko Ikemura, Hirohisa Sato). It will brighten very rapidly after this. 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)  
Jan. 25  13 29.22   -4 48.4   2.288   2.668   101   17.5   5:15 (  0, 50)  
Feb.  1  13 33.92   -5  8.9   2.152   2.624   107   17.2   4:52 (  0, 50)

* P/2019 Y2 ( Fuls )

Now it is 17.5 mag (Jan. 5, Toshihiko Ikemura, Hirohisa Sato). It will brighten up to 16.5 mag and will be observable in good condition in March. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Jan. 25  13 12.45   -0 42.8   1.623   2.131   107   17.3   4:58 (  0, 54)  
Feb.  1  13 19.19   -1  4.9   1.550   2.131   112   17.2   4:38 (  0, 54)

* C/2019 L3 ( ATLAS )

Now it is 16.6 mag (Dec. 27, Toshihiko Ikemura, Hirohisa Sato). 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, although it becomes low from February to March. 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)  
Jan. 25  22 32.53   40 23.6   7.324   6.990    66   17.3  18:48 (118, 37)  
Feb.  1  22 37.76   40 27.3   7.343   6.945    62   17.2  18:54 (120, 32)

* 112P/Urata-Niijima

Now it is 18.4 mag (Jan. 3, A. Sonka). It will brighten up to 17 mag from February to March. It is not observable in the Southern Hemisphere. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Jan. 25   0 14.46    6  7.7   1.636   1.455    61   17.4  18:48 ( 64, 42)  
Feb.  1   0 30.58    9 37.1   1.670   1.449    59   17.3  18:54 ( 71, 41)

* C/2019 T3 ( ATLAS )

Now it is 17.4 mag (Dec. 28, Toshihiko Ikemura, Hirohisa Sato). It stays observable at 16.5 mag for a long time from 2020 to 2021. In the Northern Hemisphere, it is observable in excellent condition for a long time. In the Southern Hemisphere, it is not observable until 2021 summer. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Jan. 25   0 56.13   75 19.8   6.285   6.578   103   17.6  18:48 (169, 47)  
Feb.  1   0 55.11   74  3.0   6.331   6.558    98   17.5  18:54 (165, 46)

* 173P/Mueller 5

Now it is 17.3 mag (Dec. 27, Kunihiro Shima). It is observable at 17-18 mag for a long time from late 2019 to early 2021. It will fade out before it passes the perihelion. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Jan. 25   2 52.39    3  2.9   4.820   5.039    97   17.6  18:48 (  5, 58)  
Feb.  1   2 53.76    3 35.1   4.915   5.026    90   17.6  18:54 ( 20, 57)

* 175P/Hergenrother

It is observable at 17.5 mag in good condition until spring. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Jan. 25  16 32.53  -16 52.8   2.556   2.154    55   17.6   5:36 (316, 25)  
Feb.  1  16 46.06  -17 14.6   2.511   2.177    59   17.7   5:32 (319, 26)

* (944) Hidalgo

Now it is 17.2 mag (Nov. 25, ATLAS-MLO). 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)  
Jan. 25  13 49.07   -2 33.8   4.052   4.299    97   17.8   5:35 (  0, 52)  
Feb.  1  13 48.84   -2 49.3   3.981   4.339   104   17.7   5:07 (  0, 52)

* 117P/Helin-Roman-Alu 1

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)  
Jan. 25  10 50.53   18 56.4   3.751   4.600   145   17.8   2:37 (  0, 74)  
Feb.  1  10 47.49   19 24.6   3.687   4.588   153   17.7   2:07 (  0, 74)

* C/2014 B1 ( Schwartz )

Now it is 17.7 mag (Dec. 31, 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)  
Jan. 25  12 45.36    7 41.6  10.212  10.683   116   17.8   4:31 (  0, 63)  
Feb.  1  12 45.37    7 57.2  10.129  10.700   123   17.8   4:04 (  0, 63)

* A/2019 U6

Now it is 17.5 mag (Jan. 18, Katsumi Yoshimoto). Hidetaka Sato reported its cometary activity was detected on Dec. 6. It will approach to Sun down to 0.9 a.u. in June, and it is extected to brighten up to 12 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)  
Jan. 25   4  9.51  -27 40.9   2.049   2.454   102   18.0  19:52 (  0, 27)  
Feb.  1   4  3.50  -27 35.5   2.047   2.368    96   17.8  19:19 (  0, 27)

* 203P/Korlevic

Now it is 16.5 mag (Dec. 28, Toshihiko Ikemura, Hirohisa Sato). It is observable at 17 mag in good condition in winter. It locates somewhat low in the Southern Hemisphere. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Jan. 25   3 55.94   22 24.0   2.633   3.207   117   17.9  19:40 (  0, 77)  
Feb.  1   3 58.12   22 21.9   2.721   3.205   110   18.0  19:15 (  0, 77)

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