Weekly Information about Bright Comets (2022 Feb. 19: North)

Japanese version
Home page
Updated on February 21, 2022
Last week South Next week

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.

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

* 19P/Borrelly

Now it is bright as 9.6 mag (Feb. 20, Osamu Miyazaki). It stays bright as 9-10 mag until March. 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)  
Feb. 19   2 12.34   16 29.5   1.358   1.323    66    9.2  19:10 ( 76, 47)  
Feb. 26   2 32.09   20 49.0   1.403   1.338    65    9.4  19:16 ( 84, 47)  

* C/2017 K2 ( PanSTARRS )

Now it is bright as 11.1 mag (Feb. 11, Osamu Miyazaki). It is expected to be observable at 5-6 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 is appearing in the morning sky. It stays observable in good condition after this.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Feb. 19  18 35.01   11 21.2   4.394   3.955    57   10.2   5:17 (284, 38)  
Feb. 26  18 39.46   11 18.9   4.257   3.891    61   10.0   5:09 (287, 41)  

* C/2019 L3 ( ATLAS )

Now it is 9.8 mag (Feb. 20, Osamu Miyazaki). It stays bright as 10 mag until spring for a long time. It stays observable in good condition for a long time. It locates somewhat low in the Southern Hemisphere,

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Feb. 19   6 35.82   23 12.2   2.877   3.574   128   10.1  20:39 (  0, 78)  
Feb. 26   6 34.56   21 55.3   2.969   3.581   120   10.2  20:10 (  0, 77)  

* C/2021 A1 ( Leonard )

It brightened up to 3 mag from mid December to late December. Now it is fading. It faded down to 8.5 mag in late January (Jan. 28, Chris Wyatt). In the Southern Hemisphere, it becames unobservable temporarily in early February. But it is appearing in the morning sky. In the Northern Hemisphere, it will become observable again at 13 mag in late April.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Feb. 19  21 26.98  -35 11.8   1.943   1.134    25   10.5   5:17 (298,-22)  
Feb. 26  21 24.30  -34 59.4   1.987   1.243    30   10.9   5:09 (300,-18)  

* 22P/Kopff

Now it is 12.7 mag (Feb. 4, 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)  
Feb. 19  19 27.42  -20  0.4   2.208   1.577    39   11.2   5:17 (301,  8)  
Feb. 26  19 50.19  -19 18.3   2.169   1.566    41   11.1   5:09 (300,  8)  

* 104P/Kowal 2

Brightened very rapidly. Now it is very bright as 10.4 mag (Feb. 20, Osamu Miyazaki). It will be fading after this.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Feb. 19   3 54.86   10  9.6   0.683   1.189    88   11.4  19:10 ( 37, 61)  
Feb. 26   4 30.40   11 58.3   0.719   1.231    90   12.0  19:16 ( 38, 62)  

* 67P/Churyumov-Gerasimenko

It brightened up to 8.5 mag from autumn to winter (Dec. 2, Toshihiko Ikemura, Hirohisa Sato). Now it is fading. But it is still bright as 11.5 mag (Feb. 20, Osamu Miyazaki). It stays observable in good condition for a long time. It locates somewhat low in the Southern Hemisphere,

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Feb. 19   8 22.77   27 39.5   0.840   1.768   150   11.5  22:26 (  0, 83)  
Feb. 26   8 22.84   27  1.1   0.927   1.823   143   11.9  21:58 (  0, 82)  

* C/2019 T4 ( ATLAS )

Now it is 12.7 mag (Feb. 9, Chris Wyatt). It will brighten up to 11.5 mag in spring. It stas observable in good condition for a long time.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Feb. 19  12  6.14  -28 10.8   3.625   4.340   131   11.8   2:12 (  0, 27)  
Feb. 26  12  4.29  -27 24.9   3.544   4.328   137   11.7   1:43 (  0, 27)  

* 9P/Tempel 1

Now it is 14.7 mag (Feb. 3, Giuseppe Pappa). It stays 12-13 mag for a while. But actually, it is fainter than this ephemeris recently.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Feb. 19  18  9.18  -21 58.5   1.830   1.550    57   12.2   5:17 (317, 19)  
Feb. 26  18 31.78  -22 26.7   1.787   1.546    59   12.2   5:09 (316, 18)  

* C/2021 F1 ( Lemmon-PanSTARRS )

Now it is bright as 12.4 mag (Feb. 6, Ken-ichi Kadota). It stays 13 mag until spring. In the Northern Hemisphere, it is observable only until early March. In the Southern Hemisphere, it is not observable until late May. But it will be observable in good condition after that.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Feb. 19  21 21.80   48  1.5   1.423   1.270    60   12.8   5:17 (227, 24)  
Feb. 26  22 15.97   45 36.5   1.462   1.202    54   12.6   5:09 (226, 18)  

* C/2021 O3 ( PanSTARRS )

Now it is 15.1 mag (Feb. 1, Ken-ichi Kadota). It is expected to brighten very rapidly up to 4.5 mag in April. However, it is not observable at the high light. 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)  
Feb. 19  23 20.36    0  2.5   2.349   1.472    21   13.5  19:10 ( 88,  3)  
Feb. 26  23 33.84   -0  9.4   2.259   1.344    17   13.1  19:16 ( 91, -1)  

* C/2020 Y2 ( ATLAS )

Now it is 15.8 mag (Jan. 18, J. Drummond). It will brighten up to 13 mag in spring. 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)  
Feb. 19  10 39.66  -69 38.8   3.040   3.335    98   13.6   0:47 (  0,-15)  
Feb. 26   9 56.49  -70 24.0   2.988   3.313   100   13.6  23:27 (  0,-16)  

* 29P/Schwassmann-Wachmann 1

Now it is bright as 11.1 mag (Jan. 24, Charles S. Morris). It has a large diffuse coma.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Feb. 19   4 17.57   29 28.3   5.748   5.959    97   13.6  19:10 ( 65, 78)  
Feb. 26   4 19.45   29 20.5   5.862   5.961    90   13.7  19:16 ( 77, 72)  

* 116P/Wild 4

Now it is 13.8 mag (Feb. 11, Charles S. Morris). It is observable at 13.5 mag in good condition until spring.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Feb. 19   9 44.65   18 52.7   1.442   2.422   170   13.9  23:47 (  0, 74)  
Feb. 26   9 38.93   19 11.0   1.439   2.403   162   13.8  23:14 (  0, 74)  

* C/2021 E3 ( ZTF )

Now it is 14.9 mag (Nov. 28, Thomas Lehmann). It is expected to brighten up to 11 mag from spring to summer. In the Southen Hemisphere, it is appearing in the morning sky. 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)  
Feb. 19  20  3.90  -15 29.8   3.073   2.277    30   14.0   5:17 (292,  4)  
Feb. 26  20 11.24  -16 51.3   2.950   2.225    35   13.8   5:09 (295,  6)  

* 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 12.8 mag (Feb. 11, Charles S. Morris). It stays observable in good condition for a long time.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Feb. 19   6 24.53   11 51.7   1.539   2.259   125   13.9  20:28 (  0, 67)  
Feb. 26   6 28.53   12 29.0   1.647   2.301   119   14.2  20:04 (  0, 68)  

* 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 14.1 mag (Feb. 9, Chris Wyatt).

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Feb. 19  14 12.29   15  7.5   3.785   4.373   120   14.0   4:18 (  0, 70)  
Feb. 26  14  6.01   17  5.6   3.732   4.413   128   14.1   3:44 (  0, 72)  

* C/2020 V2 ( ZTF )

Now it is 13.9 mag (Feb. 10, Toshihiko Ikemura, Hirohisa Sato). 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)  
Feb. 19  12 43.49   53 21.8   4.432   5.100   127   14.3   2:50 (180, 72)  
Feb. 26  12 34.26   55  7.0   4.372   5.044   128   14.2   2:13 (180, 70)  

* C/2019 U5 ( PanSTARRS )

Now it is 14.4 mag (Feb. 8, 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 for a long time. It is not observable in the Southern Hemisphere.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Feb. 19  16 41.60   34 49.2   4.965   5.060    89   14.5   5:17 (264, 72)  
Feb. 26  16 39.63   35 45.4   4.848   5.020    94   14.4   5:09 (262, 76)  

* 117P/Helin-Roman-Alu 1

Now it is 15.3 mag (Feb. 3, Thomas Lehmann). Appearing in the morning. It will brighten up to 13 mag in summer.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Feb. 19  17 56.71  -25 22.9   3.477   3.116    60   14.6   5:17 (321, 18)  
Feb. 26  18  6.35  -25 36.8   3.384   3.109    65   14.5   5:09 (323, 19)  

* C/2020 R7 ( ATLAS )

Now it is 15.7 mag (Feb. 2, Thomas Lehmann). It will brighten up to 12.5 mag in summer. In the Southern Hemisphere, it stays observable in excellent condition for a long time, although it becomes low temporarily in February. In the Northern Hemisphere, it is not observable until August.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Feb. 19  22 30.84  -56 42.1   4.224   3.600    45   14.7  19:10 ( 41,-33)  
Feb. 26  22 33.96  -55 56.1   4.163   3.563    47   14.6   5:09 (318,-37)  

* C/2020 T2 ( Palomar )

It brightened up to 9.5 mag in early summer (June 27, Marco Goiato). Now it is fading. It has faded down to 12.7 mag in autumn (Nov. 22, Thomas Lehmann). Now it is not observable. 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)  
Feb. 19  21 13.33  -32  3.1   4.139   3.262    24   15.1   5:17 (297,-18)  
Feb. 26  21 25.11  -31 47.2   4.161   3.320    28   15.3   5:09 (298,-16)  

* C/2018 U1 ( Lemmon )

Now it is 16.0 mag (Feb. 3, 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)  
Feb. 19  17 20.52  -35 35.3   5.335   5.061    68   15.2   5:17 (333, 13)  
Feb. 26  17 21.09  -36 39.7   5.227   5.071    75   15.1   5:09 (338, 14)  

* C/2020 K1 ( PanSTARRS )

Now it is 15.4 mag (Feb. 11, 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 is appearing in the morning sky. It stays observable in good condition after this.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Feb. 19  18 48.00   17 18.7   5.603   5.136    57   15.3   5:17 (276, 39)  
Feb. 26  18 51.54   17 21.7   5.492   5.089    61   15.2   5:09 (278, 42)  

* C/2021 P4 ( ATLAS )

Now it is 15.0 mag (Feb. 4, J.-G. Bosch, F. Kugel, A. Klotz, J. Nicolas). 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)  
Feb. 19  23 40.37   51 28.8   2.842   2.602    66   15.4  19:10 (134, 32)  
Feb. 26  23 53.84   51 59.7   2.808   2.522    63   15.3  19:16 (136, 29)  

* C/2020 PV6 ( PanSTARRS )

Now it is 15.4 mag (Feb. 6, Ken-ichi Kadota). 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)  
Feb. 19  15 40.28   32 56.6   2.408   2.787   102   15.5   5:17 (288, 84)  
Feb. 26  15 27.05   35 34.1   2.348   2.829   108   15.6   5:05 (180, 90)  

* 110P/Hartley 3

It brightened rapidly. Now it is 15.0 mag (Feb. 16, Ken-ichi Kadota). It stays 15 mag until February, and it is observable in excellent condition.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Feb. 19   7 54.89   13 48.6   1.681   2.570   147   15.7  21:58 (  0, 69)  
Feb. 26   7 52.42   13 37.3   1.745   2.582   139   15.8  21:28 (  0, 69)  

* 70P/Kojima

Now it is 15.8 mag (Feb. 8, Toshihiko Ikemura, Hirohisa Sato). It stays 15.5 mag until March, and it is observable in excellent condition.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Feb. 19  11 50.84    9 46.7   1.253   2.188   154   15.7   1:57 (  0, 65)  
Feb. 26  11 47.35   10 40.2   1.247   2.210   162   15.7   1:26 (  0, 66)  

* C/2020 M5 ( ATLAS )

Now it is 14.5 mag (Feb. 8, Toshihiko Ikemura, Hirohisa Sato). It stays observable at 15 mag for a long time.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Feb. 19  12 24.67   11  9.8   2.631   3.498   146   15.8   2:31 (  0, 66)  
Feb. 26  12 12.29   10 44.3   2.606   3.533   155   15.8   1:51 (  0, 66)  

* 57P/du Toit-Neujmin-Delporte

It brightened up to 11.5 mag in outburst in October (Oct. 22, Marco Goiato). Now it is fading. It has already faded down to 15.1 mag (Jan. 24, A. Diepvens). But Hiroshi Abe reported it is bright as 12.3 mag on Jan. 22. In the Southern Hemisphere, it is already unobservable. In the Northern Hemisphere, it stays observable until early February.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Feb. 19  23 31.78   -2 49.7   2.931   2.052    22   15.8  19:10 ( 84,  4)  
Feb. 26  23 46.91   -1 17.8   2.992   2.084    19   16.1  19:16 ( 88,  1)  

* 6P/d'Arrest

It brightened up to 9.8 mag from autumn to winter (Nov. 22, Thomas Lehmann). Now it is fading. It has already faded down to 16.0 mag (Feb. 11, Charles S. Morris). It will be fainter than 18 mag in March.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Feb. 19   1 43.34   -6 29.8   2.565   2.126    53   16.1  19:10 ( 60, 27)  
Feb. 26   1 56.97   -4 53.3   2.672   2.176    50   16.7  19:16 ( 65, 24)  

* C/2020 H6 ( ATLAS )

Now it is 16.0 mag (Feb. 11, Toshihiko Ikemura, Hirohisa Sato). It stays observable at 16 mag from 2021 to 2022.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Feb. 19  16 14.67   19 28.8   4.691   4.833    92   16.1   5:17 (314, 69)  
Feb. 26  16 17.19   21 13.7   4.619   4.846    97   16.1   5:09 (321, 73)  

* 402P/2020 Q3 ( LINEAR )

First return of a new periodic comet observed at 16 mag from 2003 to 2004. Now it is 16.3 mag (Feb. 17, Ken-ichi Kadota). It stays 16 mag until March, and it stays observable in excellent condition.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Feb. 19   6  0.37    9 43.9   3.380   3.956   119   16.1  20:04 (  0, 65)  
Feb. 26   6  0.94   10 40.5   3.473   3.960   112   16.2  19:37 (  0, 66)  

* C/2021 O1 ( Nishimura )

Now it is 18.7 mag (Feb. 13, Giuseppe Pappa). It was observed at 9-10 mag from late July to early August. Although it had been unobservable for a long time, it is appearing in the morning sky now.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Feb. 19  16 38.58  -28  8.7   3.078   3.032    78   16.3   5:17 (339, 24)  
Feb. 26  16 41.22  -28 52.3   3.052   3.115    84   16.4   5:09 (343, 24)  

* 8P/Tuttle

It brightened very rapidly, and brightened up to 8.9 mag (Sept. 11, Chris Wyatt). Now it is fading. It has already faded down to 18.5 mag (Feb. 11, J. L. Virlichie, P. Traverse, H. Roy). In the Southern Hemisphere, it stays observable after this while the comet will be fading. It is not observable after this in the Northern Hemisphere.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Feb. 19  17 38.45  -55 12.5   2.721   2.520    67   16.3   5:17 (340, -6)  
Feb. 26  17 46.58  -55 26.6   2.706   2.588    72   16.6   5:09 (341, -5)  

* C/2019 F1 ( ATLAS-Africano )

Now it is 16.2 mag (Jan. 27, SONEAR Observatory, Oliveira). It will be fading slowly after this. In the Southern Hemisphere, it stays observable in good condition for a long time, although it becomes extremely low temporarily from March to April. In the Northern Hemisphere, it is not observable until July.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Feb. 19   0 13.68  -41 37.6   4.894   4.195    40   16.3  19:10 ( 47,-12)  
Feb. 26   0 22.15  -40  2.2   4.947   4.227    39   16.4  19:16 ( 51,-15)  

* P/2021 N2 ( Fuls )

Brightened rapidly. Now it is 16.1 mag (Jan. 29, ATLAS-MLO, Mauna Loa). It is observable at 15.5-16 mag in good condition in winter.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Feb. 19   2 35.01   12 18.2   4.059   3.840    70   16.5  19:10 ( 66, 49)  
Feb. 26   2 41.52   12 38.8   4.161   3.847    64   16.6  19:16 ( 72, 44)  

* 73P/Schwassmann-Wachmann 3

Now it is 17.7 mag (Feb. 4, J.-G. Bosch, F. Kugel, A. Klotz, J. Nicolas). 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)  
Feb. 19  10 45.78   28  3.0   1.452   2.409   161   16.8   0:53 (  0, 83)  
Feb. 26  10 36.62   29 16.9   1.398   2.351   159   16.6   0:16 (  0, 84)  

* C/2020 O2 ( Amaral )

Now it is 16.6 mag (Feb. 11, D. Buczynski). It was observed at 15 mag in 2021. Now it is fading. It stays observable at 17 mag for a while in 2022.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Feb. 19  18 29.43    4 31.0   5.522   5.048    56   16.6   5:17 (292, 35)  
Feb. 26  18 33.43    5 46.2   5.452   5.063    61   16.6   5:09 (294, 39)  

* 325P/Yang-Gao

It has not been observed yet in this apparition. It was expected to be observable at 16 mag in good condition in spring. But actually, it is fainter than 19.2 mag (Jan. 22, John Drummond).

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Feb. 19  16 53.25  -34 36.1   1.417   1.493    74   16.9   5:17 (338, 16)  
Feb. 26  17 20.19  -34 18.1   1.362   1.473    75   16.7   5:09 (337, 16)  

* C/2021 U5 ( Catalina )

Now it is 15.2 mag (Feb. 16, Ken-ichi Kadota). It is observable at 16 mag in good condition from winter to spring. It is brighter than this ephemeris recently.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Feb. 19  10 19.65  -21 47.2   1.489   2.378   146   16.7   0:26 (  0, 33)  
Feb. 26  10 18.53  -19 18.4   1.470   2.387   151   16.7  23:53 (  0, 36)  

* 132P/Helin-Roman-Alu 2

It brightened up to 13.1 mag in autumn (Oct. 28, Toshihiko Ikemura, Hirohisa Sato). Now it is fading. But it is still bright as 15.8 mag (Feb. 17, Ken-ichi Kadota). It stays observable in good condition for a long time.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Feb. 19   3 16.25   12 17.9   1.851   1.941    80   16.7  19:10 ( 54, 57)  
Feb. 26   3 31.16   13 25.9   1.948   1.973    76   17.0  19:16 ( 61, 54)  

* C/2020 S4 ( PanSTARRS )

Now it is 16.9 mag (Jan. 31, Toshihiko Ikemura, Hirohisa Sato). It will brighten up to 14 mag in early 2023. It stays observable in good condition until spring.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Feb. 19   4 20.50    6 57.0   4.484   4.663    94   16.7  19:10 ( 23, 60)  
Feb. 26   4 22.69    7 36.7   4.547   4.622    88   16.7  19:16 ( 38, 57)  

* C/2020 F7 ( Lemmon )

Now it is 17.2 mag (Jan. 18, J. Drummond). It brightened rapidly. 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 will be observable only in extremely low sky from autumn to winter.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Feb. 19   7 18.73  -47  4.1   4.957   5.380   110   16.7  21:20 (  0,  8)  
Feb. 26   7 10.26  -46 44.9   4.997   5.388   108   16.8  20:45 (  0,  8)  

* 230P/LINEAR

Now it is 18.6 mag (Feb. 12, Palomar Mountain--ZTF). It was expected to brighten up to 16.5-17 mag in winter. In its last apparition in 2015, it brightened up to 13 mag. But actually, it is fainter than this ephemeris recently.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Feb. 19   1 16.19   -3 19.6   2.092   1.595    47   16.8  19:10 ( 67, 24)  
Feb. 26   1 33.99   -0 52.2   2.116   1.584    45   16.8  19:16 ( 72, 23)  

* 430P/2021 Q2 ( Scotti )

First return of a new periodic comet which brightened up to 17 mag in 2011. Now it is extremely faint as 20.4 mag (Feb. 4, J.-G. Bosch, F. Kugel, A. Klotz, J. Nicolas). It brightened up to 16.8 mag in October (Oct. 10, Ken-ichi Kadota), however, it has been fading after that.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Feb. 19  15 11.12  -13 39.7   1.243   1.728   100   16.8   5:17 (  0, 41)  
Feb. 26  15 19.37  -14 20.0   1.206   1.757   105   16.9   4:57 (  0, 41)  

* C/2019 O3 ( Palomar )

Now it is 16.9 mag (Jan. 8, Toshihiko Ikemura, Hirohisa Sato). 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)  
Feb. 19  19 13.92   51 57.9   9.274   9.046    73   16.9   5:17 (229, 44)  
Feb. 26  19 16.77   52 50.2   9.266   9.055    74   16.9   5:09 (227, 47)  

* 81P/Wild 2

Now it is 16.6 mag (Jan. 29, Observatoire Chante-Perdrix, Dauban). It will brighten up to 11.5 mag in 2022 winter. It stays observable while the comet will be brightening slowly.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Feb. 19   3 10.19   14 38.9   3.025   3.000    79   17.0  19:10 ( 60, 57)  
Feb. 26   3 15.63   15  8.2   3.086   2.961    73   16.9  19:16 ( 68, 52)  

* C/2021 T2 ( Fuls )

Now it is 17.8 mag (Jan. 2, Ken-ichi Kadota). It is expected to brighten up to 13.5 mag from June to July. It is observable only in the Southern Hemisphere at the high light. In the Northern Hemisphere, it is observable only until March when it brightens up to 16.5 mag.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Feb. 19   1 15.39    2 31.8   2.536   2.022    48   17.1  19:10 ( 72, 28)  
Feb. 26   1 18.93    1  9.3   2.567   1.948    42   16.9  19:16 ( 76, 21)  

* C/2020 U5 ( PanSTARRS )

Now it is 16.6 mag (Jan. 31, 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)  
Feb. 19  23 19.81   78 10.2   3.670   3.804    90   17.0  19:10 (166, 35)  
Feb. 26  23 28.33   77  5.5   3.727   3.795    86   17.1  19:16 (165, 33)  

* C/2020 F2 ( ATLAS )

Now it is 17.0 mag (Feb. 11, 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)  
Feb. 19  14 32.71   -3 16.4   8.430   8.858   112   17.1   4:38 (  0, 52)  
Feb. 26  14 30.19   -2 48.5   8.314   8.854   120   17.0   4:08 (  0, 52)  

* 152P/Helin-Lawrence

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)  
Feb. 19  18 34.46  -21 56.7   3.610   3.101    52   17.1   5:17 (312, 15)  
Feb. 26  18 44.57  -21 58.3   3.535   3.104    56   17.1   5:09 (314, 17)  

* 52P/Harrington-Abell

It brightened up to 16.4 mag from autumn to winter (Oct. 6, ATLAS-MLO, Mauna Loa). Now it is fading. It has already faded down to 17.9 mag (Feb. 11, Toshihiko Ikemura, Hirohisa Sato).

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Feb. 19  12 53.12  -11 55.0   1.377   2.174   132   17.1   2:59 (  0, 43)  
Feb. 26  12 49.76  -12 28.2   1.354   2.208   140   17.2   2:28 (  0, 42)  

* 99P/Kowal 1

Now it is 17.3 mag (Feb. 11, Toshihiko Ikemura, Hirohisa Sato). It will be observable at 17 mag in good condition in spring.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Feb. 19  13 44.00   -9 46.3   4.107   4.710   122   17.2   3:50 (  0, 45)  
Feb. 26  13 43.42   -9 45.9   4.017   4.709   129   17.2   3:22 (  0, 45)  

* C/2021 G2 ( ATLAS )

Now it is 16.8 mag (Feb. 11, ATLAS Chile, Rio Hurtado). 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)  
Feb. 19   7 13.00  -30 55.6   7.874   8.416   120   17.2  21:16 (  0, 24)  
Feb. 26   7 11.46  -30 31.0   7.879   8.379   117   17.2  20:46 (  0, 24)  

* 254P/McNaught

Now it is 17.0 mag (Jan. 29, ATLAS-MLO, Mauna Loa). It continued brightening for a while even after the perihelion passage. It stays observable at 16-17 mag in good condition for a while.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Feb. 19   4 25.77   -6  3.4   3.871   4.046    93   17.2  19:10 ( 15, 48)  
Feb. 26   4 28.47   -4 54.8   3.984   4.065    87   17.3  19:16 ( 27, 47)  

* 274P/Tombaugh-Tenagra

Now it is 17.8 mag (Jan. 31, Ken-ichi Kadota). It is observable at 17 mag from November to March. It is observable in good condition in the Northern Hemisphere, but it locates low in the Southern Hemisphere.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Feb. 19   5 24.82   31 16.8   1.930   2.478   112   17.4  19:29 (  0, 86)  
Feb. 26   5 29.71   31 40.2   2.004   2.472   106   17.4  19:16 ( 33, 86)  

* C/2019 T2 ( Lemmon )

Now it is 18.4 mag (Jan. 9, J. Drummond). In the Southern Hemisphere, it stays observable for a long time. In the Northern Hemisphere, it is not observable after this.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Feb. 19  10 38.94  -51 38.4   3.504   4.044   116   17.4   0:46 (  0,  3)  
Feb. 26  10 27.11  -50  7.4   3.496   4.094   120   17.5   0:06 (  0,  5)  

* C/2020 U4 ( PanSTARRS )

Now it is 17.8 mag (Jan. 8, Toshihiko Ikemura, Hirohisa Sato). It stays 17-18 mag for a long time from 2021 to 2022. It is observable in excellent condition in the Northern Hemisphere, It locates somewhat low in the Southern Hemisphere.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Feb. 19   2 39.28   27 25.3   5.514   5.366    76   17.5  19:10 ( 87, 58)  
Feb. 26   2 37.91   27  7.6   5.638   5.362    68   17.6  19:16 ( 92, 51)  

* C/2018 N2 ( ASASSN )

Now it is 17.0 mag (Jan. 26, ATLAS-HKO, Haleakala). In the Northern Hemisphere, it stays observable for a long time while it is getting fainter slowly. In the Southern Hemisphere, it will never be observable again.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Feb. 19  14 51.10   44 40.1   7.370   7.791   111   17.6   4:56 (180, 80)  
Feb. 26  14 48.77   45 12.4   7.369   7.838   114   17.6   4:27 (180, 80)  

* A/2021 X1

Now it is 17.4 mag (Jan. 29, Toshihiko Ikemura, Hirohisa Sato). It will brighten up to 15-16 mag in 2023.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Feb. 19   6 53.20  -22  4.6   4.708   5.293   121   17.6  20:55 (  0, 33)  
Feb. 26   6 45.89  -21 12.2   4.734   5.247   116   17.6  20:21 (  0, 34)  

* C/2021 Y1 ( ATLAS )

Now it is 18.5 mag (Jan. 24, A. Diepvens). It is expected to brighten up to 12 mag from winter to summer in 2023. In the Northern Hemisphere, it stays observable in good condition until 2023 spring. In the Southern Hemisphere, it is not observable until summer.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Feb. 19   1 44.33   46 54.1   5.222   5.067    75   17.6  19:10 (124, 51)  
Feb. 26   1 50.06   46  3.0   5.258   5.009    70   17.6  19:16 (123, 46)  

* C/2021 D2 ( ZTF )

Now it is 16.5 mag (Jan. 26, Ken-ichi Kadota). It was expected to brighten up to 15.5 mag in winter. But actually, it is fading even before the perihelion passage. In the Northern Hemisphere, it stays observable in good condition for a long time. It is not observable at all in the Southern Hemisphere.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Feb. 19   6 43.14   86 17.8   2.554   2.950   103   17.6  20:49 (180, 39)  
Feb. 26   6 17.71   82 24.4   2.583   2.955   102   17.7  19:56 (180, 43)  

* P/2020 V4 ( Rankin )

Now it is 16.9 mag (Jan. 31, ATLAS-HKO, Haleakala). It is observable at 17.5 mag in good condition in winter.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Feb. 19   7 40.40    4 26.1   4.443   5.264   142   17.6  21:43 (  0, 59)  
Feb. 26   7 38.85    4 47.0   4.513   5.271   136   17.7  21:14 (  0, 60)  

* C/2017 Y2 ( PanSTARRS )

It was observed at 16 mag from 2020 to 2021. Now it is fading. It will be fainter than 18 mag in spring.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Feb. 19  15 36.80  -38 15.5   5.851   5.917    89   17.7   5:17 (355, 16)  
Feb. 26  15 33.40  -38 59.0   5.762   5.950    96   17.7   5:09 (359, 16)  

* (3200) Phaethon

Now it is 18.8 mag (Feb. 9, Catalina Sky Survey). In the Northern Hemisphere, it is observable until April when it brightens up to 16 mag. It is not observable in the Southern Hemisphere.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Feb. 19   2  1.37   18 47.2   1.754   1.607    64   18.0  19:10 ( 81, 46)  
Feb. 26   2  8.45   18 31.8   1.779   1.533    59   17.9  19:16 ( 85, 41)  

* C/2021 C5 ( PanSTARRS )

Now it is 17.7 mag (Feb. 10, Toshihiko Ikemura, Hirohisa Sato). 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)  
Feb. 19  10 19.79  -15 11.4   3.714   4.618   153   18.0   0:26 (  0, 40)  
Feb. 26  10 13.90  -15 36.5   3.659   4.575   154   17.9  23:48 (  0, 39)  

* 440P/2021 W2 ( Kobayashi )

First return of a new periodic comet which brightened up to 16.5 mag in 1997. Now it is 17.8 mag (Feb. 7, H. Nohara). It is fainter than originally predicted, but it is brightening rapidly. It is observable in good condition from January to March.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Feb. 19   8 26.94   24 32.4   1.168   2.096   152   18.3  22:30 (  0, 79)  
Feb. 26   8 24.77   23 23.8   1.190   2.083   145   18.2  22:00 (  0, 78)  

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

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