Weekly Information about Bright Comets (2024 Dec. 7: North)

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 Updated on December 10, 2024
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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/2023 A3 ( Tsuchinshan-ATLAS )

It brightened up to -3 mag due to the forward scattering on Oct. 9 in the SOHO coronagraph images (Q.-c. Zhang, Charles S. Morris). It became a great comet of 0 mag on the ground. Now it is 9.3 mag (Dec. 8, Yoshimi Nagai). Fading rapidly. In the Northern Hemisphere, it will be unobservable in January. But it will be observable again in January. In the Southern Hemisphere, it is not observable now, but it will appear in March. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec.  7  19 15.39    4 44.1   2.129   1.574    43    9.1  18:18 ( 77, 26)  
Dec. 14  19 23.51    5  5.6   2.316   1.690    40    9.5  18:20 ( 81, 22)

* 333P/LINEAR

Now it is 10.8 mag (Dec. 8, Carlos Labordena). It will fade out rapidly after this. It will be fainter than 18 mag in March. In the Northern Hemisphere, it will be getting lower gradually. But it will be getting higher again after December. In the Southern Hemisphere, it will never be observable after this. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec.  7  13 42.01   56 33.7   0.547   1.118    88    9.6   5:24 (222, 52)  
Dec. 14  17 17.93   66 24.7   0.565   1.132    89    9.9   5:29 (208, 31)

* C/2024 G3 ( ATLAS )

It approaches to Sun down to 0.09 a.u. on Jan. 13. According to the calculation, it will brighten up to -1 mag. But probably, it will be disintegrated. At the high light, it may be observable after the perihelion passage only in the Southern Hemisphere. Now it is 9.7 mag (Dec. 3, Martin Masek). It brightens up to -1 mag, but it will turn to fade out rapidly after that. In the Northern Hemisphere, it will never be observable after this. In the Southern Hemisphere, it will be unobservable soon. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec.  7  16  8.64  -39 42.3   2.023   1.145    19   11.1   5:24 (306,-18)  
Dec. 14  16 27.70  -38  7.7   1.860   0.988    19   10.3   5:29 (306,-15)

* 13P/Olbers

It returned for the first time in 68 years. It brightened up to 6.2 mag in early summer (July 1, Virgilio Gonano). Now it is 10.1 mag (Nov. 10, Mike Olason). Fading gradually. Now it is not observable. It will appear in January. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec.  7  16 49.20  -12 25.2   3.462   2.499    10   11.7   5:24 (277,-11)  
Dec. 14  17  0.31  -13 25.7   3.530   2.573    11   12.0   5:29 (281, -8)

* C/2022 E2 ( ATLAS )

Now it is 12.7 mag (Dec. 8, Osamu Miyazaki). Fading slowly. In the Northern Hemisphere, it stays observable in good condition. In the Southern Hemisphere, it is not observable now. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec.  7   4 11.65   68 23.3   2.993   3.743   133   12.6  23:03 (180, 57)  
Dec. 14   3 31.32   67 38.8   3.023   3.756   132   12.7  21:56 (180, 57)

* C/2023 C2 ( ATLAS )

Now it is 13.4 mag (Oct. 31, Thomas Lehmann). Fading slowly. It will be unobservable soon in the Southern Hemisphere, or in January in the Northern Hemisphere. But it will be observable again in March. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec.  7  19 26.81  -18 58.3   3.110   2.379    35   13.2  18:18 ( 56, 12)  
Dec. 14  19 39.07  -17  3.0   3.167   2.388    31   13.3  18:20 ( 60, 11)

* 12P/Pons-Brooks

It returns for the first time in 70 years. It brightened up to 3.7 mag in early April (Apr. 6, Jose Guilherme Aguiar). Now it is 14.6 mag (Oct. 22, Hidetaka Sato). Fading slowly. In the Northern Hemisphere, it is not observable now, but it will appear in February. In the Southern Hemisphere, it will be getting higher gradually. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec.  7  15 57.19  -47 50.2   4.243   3.402    27   13.4   5:24 (315,-21)  
Dec. 14  16  7.63  -47 56.1   4.303   3.478    29   13.6   5:29 (317,-18)

* C/2024 M1 ( ATLAS )

Now it is 13.9 mag (Nov. 30, L. Hudin). It will fade out rapidly after this. In the Northern Hemisphere, it stays observable in good condition. In the Southern Hemisphere, it will be getting lower gradually after this, and it will be unobservable in January. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec.  7   4 59.73   13 45.9   0.737   1.717   171   13.7  23:50 (  0, 70)  
Dec. 14   4 27.41   22 18.3   0.758   1.731   166   13.8  22:51 (  0, 78)

* 29P/Schwassmann-Wachmann 1

Major outburst occured between Nov. 1 and 2. Another outburst occured in late November. Now it is 11.4 mag (Dec. 8, Seiichi Yoshida). It stays observable in good condition. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec.  7  10 12.70    9  7.3   5.949   6.248   103   13.8   5:09 (  0, 64)  
Dec. 14  10 12.92    8 59.1   5.841   6.250   110   13.8   4:42 (  0, 64)

* C/2022 QE78 ( ATLAS )

Now it is 15.1 mag (Dec. 1, ATLAS South Africa). It stays 14 mag for a while. It stays observable in good condition. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec.  7   6 40.62    3 36.4   4.983   5.843   148   14.2   1:38 (  0, 59)  
Dec. 14   6 38.10    3 55.1   4.925   5.826   153   14.2   1:08 (  0, 59)

* C/2021 G2 ( ATLAS )

Now it is 14.1 mag (Aug. 29, Chris Wyatt). It stays 14 mag for a while. It will be getting higher gradually. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec.  7  14 38.60  -19 17.9   5.838   5.029    31   14.3   5:24 (302,  9)  
Dec. 14  14 45.19  -19 15.0   5.782   5.037    37   14.3   5:29 (306, 14)

* C/2024 B1 ( Lemmon )

It brightened up to 13.1 mag in autumn (Nov. 1, Thomas Lehmann). Now it is 15.5 mag (Nov. 28, Ken-ichi Kadota). It will fade out rapidly after this. In the Northern Hemisphere, it will be getting higher gradually. In the Southern Hemisphere, it is not observable now, but it will appear in February. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec.  7  16 14.62   26 52.7   2.282   1.821    50   14.5   5:24 (249, 18)  
Dec. 14  16 30.26   24 49.7   2.338   1.863    49   14.7   5:29 (253, 20)

* C/2022 N2 ( PanSTARRS )

It is expected to brighten up to 13 mag in 2025 autumn, and it will be observable in good condition. Now it is 14.6 mag (Nov. 19, Ken-ichi Kadota). It stays 15 mag for a while. It will be getting lower gradually after this, and it will be unobservable in February in the Southern Hemisphere, or in March in the Northern Hemisphere. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec.  7  22 46.69   -4 19.3   4.295   4.346    86   14.5  18:18 ( 14, 50)  
Dec. 14  22 50.77   -3 54.1   4.371   4.318    80   14.6  18:20 ( 24, 49)

* 37P/Forbes

Now it is 12.9 mag (Dec. 4, Mike Olason). It will fade out rapidly after this. It will be fainter than 18 mag in March. It will be unobservable in January in the Southern Hemisphere, or in February in the Northern Hemisphere. It is brighter than this ephemeris recently. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec.  7  19 48.32  -20 49.3   2.341   1.710    40   14.9  18:18 ( 51, 15)  
Dec. 14  20  8.69  -19 26.8   2.400   1.733    38   15.1  18:20 ( 54, 14)

* P/2023 S1

Now it is 16.1 mag (Dec. 3, ATLAS-MLO, Mauna Loa). It stays 15 mag for a while. It stays observable in good condition. It is fainter than this ephemeris recently. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec.  7   9 18.33   20  6.1   2.039   2.662   119   15.1   4:15 (  0, 75)  
Dec. 14   9 19.76   19 46.9   1.956   2.655   125   14.9   3:49 (  0, 75)

* 487P/2024 N5 ( Siding Spring )

First return of a new periodic comet which brightened up to 16 mag in 2012. Now it is 14.8 mag (Nov. 30, Hiroshi Abe). It will fade out rapidly after this. It will be fainter than 18 mag in February. In the Northern Hemisphere, it stays observable in good condition. In the Southern Hemisphere, it will be unobservable soon. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec.  7   3 20.73   50 24.9   0.976   1.879   146   15.0  22:14 (180, 74)  
Dec. 14   3  5.75   52 21.2   1.032   1.898   140   15.2  21:31 (180, 72)

* C/2023 Q1 ( PanSTARRS )

Now it is 16.0 mag (Nov. 23, Ken-ichi Kadota). Fading slowly. In the Northern Hemisphere, it stays observable in good condition. In the Southern Hemisphere, it is not observable now, but it will appear in April. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec.  7   8 40.94   73 42.7   1.929   2.576   120   15.0   3:39 (180, 51)  
Dec. 14   8 44.78   74 33.4   1.913   2.579   122   15.0   3:15 (180, 51)

* C/2024 J2 ( Wierzchos )

Brightening rapidly. Now it is 14.7 mag (Dec. 1, Ken-ichi Kadota). Brightening slowly. It locates somewhat low in the Northern Hemisphere. In the Southern Hemisphere, it is not observable now. It will brighten up to 14 mag from winter to spring. But it is not observable at the high light. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec.  7  17 48.67   34 50.3   2.562   2.218    58   15.2  18:18 (117, 24)  
Dec. 14  18 12.58   34 14.5   2.516   2.170    58   15.1  18:20 (117, 23)

* 21P/Giacobini-Zinner

Now it is 18.2 mag (Oct. 13, F. Kugel, J. Nicolas). It will brighten rapidly after this. In the Northern Hemisphere, it will be unobservable soon. In the Southern Hemisphere, it is not observable now. It will brighten up to 10 mag in 2025 spring. But the condition of this apparition is bad. It is not observable when the comet is bright. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec.  7  17 51.01   -2 44.5   2.600   1.747    24   15.5  18:18 ( 84,  4)  
Dec. 14  18  9.15   -2 58.3   2.545   1.682    22   15.2  18:20 ( 85,  2)

* C/2021 S3 ( PanSTARRS )

It brightened up to 9.6 mag from February to March (Feb. 25, Thomas Lehmann). Now it is 15.6 mag (Nov. 28, A. Diepvens). Fading slowly. In the Northern Hemisphere, it will be getting lower gradually. But it will be getting higher again after March. In the Southern Hemisphere, it is not observable now. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec.  7  20 48.48   33 11.9   4.057   3.984    78   15.2  18:18 ( 98, 58)  
Dec. 14  20 57.31   32 31.6   4.192   4.054    75   15.4  18:20 ( 99, 54)

* C/2014 UN271 ( Bernardinelli-Bernstein )

Very large comet. It is expected to brighten up to 13 mag in 2031. Now it is 15.3 mag (Nov. 10, Thomas Lehmann). It stays 15 mag for a while. In the Northern Hemisphere, it is not observable now. In the Southern Hemisphere, it stays observable in good condition. In the Northern Hemisphere, it is not observable until 2030. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec.  7   3 50.12  -70 48.7  15.713  15.673    85   15.4  22:42 (  0,-16)  
Dec. 14   3 46.33  -70 45.1  15.714  15.649    84   15.4  22:11 (  0,-16)

* C/2024 A1 ( ATLAS )

Now it is 16.3 mag (Dec. 3, ATLAS South Africa). It stays 15 mag for a while. In the Southern Hemisphere, it stays observable in good condition. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec.  7   8  0.63  -26 20.6   3.716   4.208   113   15.6   2:57 (  0, 29)  
Dec. 14   7 54.53  -25 49.6   3.616   4.185   119   15.5   2:24 (  0, 29)

* 472P/2023 RL75 ( NEAT-LINEAR )

Now it is 15.5 mag (Dec. 1, ATLAS South Africa). Fading slowly. It stays observable in good condition. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec.  7   6 35.06    9 45.5   2.632   3.537   152   15.5   1:32 (  0, 65)  
Dec. 14   6 31.57    9 31.9   2.614   3.551   159   15.5   1:01 (  0, 65)

* C/2017 K2 ( PanSTARRS )

It brightened up to 8 mag from 2022 summer to 2023 spring. Now it is 15.5 mag (Dec. 3, ATLAS-MLO, Mauna Loa). It stays 16 mag for a while. It stays observable in good condition. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec.  7   6  0.38   20 21.2   6.488   7.442   164   15.6   0:58 (  0, 75)  
Dec. 14   5 55.85   20 36.7   6.520   7.497   172   15.6   0:26 (  0, 76)

* 43P/Wolf-Harrington

Now it is 15.4 mag (Dec. 1, W. Pei). It stays 16 mag for a while. In the Northern Hemisphere, it stays observable in good condition. In the Southern Hemisphere, it will be getting lower gradually. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec.  7   1 42.11   15 27.1   2.191   2.962   134   15.7  20:36 (  0, 71)  
Dec. 14   1 41.58   14 56.2   2.241   2.937   126   15.7  20:08 (  0, 70)

* C/2023 H5 ( Lemmon )

It will be observable at 15 mag for a long time in 2025 in the Northern Hemisphere. Now it is 16.3 mag (Dec. 2, Hirohisa Sato). It stays 15 mag for a while. In the Northern Hemisphere, it stays observable in good condition. In the Southern Hemisphere, it will be unobservable in February. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec.  7  12 12.42   31 17.0   4.587   4.632    86   15.8   5:24 (273, 68)  
Dec. 14  12 16.35   32 49.6   4.462   4.612    92   15.7   5:29 (273, 74)

* 130P/McNaught-Hughes

It brightened up to 14 mag from summer to autumn. Now it is 16.6 mag (Nov. 30, ATLAS South Africa). Fading gradually. It will be fainter than 18 mag in February. In the Northern Hemisphere, it stays observable in good condition. In the Southern Hemisphere, it will be getting lower gradually. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec.  7   1 49.07    7  9.5   1.840   2.611   132   15.9  20:43 (  0, 62)  
Dec. 14   1 49.04    7 33.2   1.946   2.645   125   16.1  20:15 (  0, 63)

* 48P/Johnson

Now it is 16.6 mag (Oct. 9, Hidetaka Sato). Brightening slowly. It will be unobservable soon. But it will be observable again in March in the Southern Hemisphere. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec.  7  18 47.37  -23 22.7   2.959   2.116    25   16.1  18:18 ( 59,  3)  
Dec. 14  19  4.40  -23 23.4   2.974   2.100    22   15.9  18:20 ( 61,  0)

* C/2022 R6 ( PanSTARRS )

Now it is 16.8 mag (Dec. 1, ATLAS Chile). It stays 16 mag for a while. It locates somewhat low in the Northern Hemisphere. But it will become high in autumn. In the Southern Hemisphere, it stays observable in good condition. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec.  7   7  5.26  -30 44.8   6.277   6.798   118   16.0   2:02 (  0, 24)  
Dec. 14   7  2.97  -30 46.5   6.223   6.786   121   15.9   1:32 (  0, 24)

* C/2020 V2 ( ZTF )

It was observed at 9-10 mag for a long time in 2023. Now it is 15.8 mag (Nov. 14, ATLAS Chile). It stays 16 mag for a while. In the Northern Hemisphere, it will never be observable after this. In the Southern Hemisphere, it will be getting lower gradually. But it will be getting higher again after February. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec.  7  20 56.57  -63 26.6   6.660   6.175    56   16.0  18:18 ( 16,-13)  
Dec. 14  20 59.48  -62 51.1   6.771   6.230    53   16.1  18:20 ( 19,-14)

* 496P/2024 S3 ( Hill )

First return of a new periodic comet which brightened up to 15 mag in 2010. It is expected to brighten up to 15 mag from winter to spring, and it will be observable in excellent condition in the Northern Hemisphere. Now it is 17.0 mag (Nov. 30, ATLAS South Africa). Brightening slowly. In the Northern Hemisphere, it stays observable in good condition. In the Southern Hemisphere, it will be getting lower gradually. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec.  7   2 17.64    9  4.9   1.074   1.935   139   16.2  21:11 (  0, 64)  
Dec. 14   2 14.25   10 24.7   1.083   1.894   132   16.0  20:40 (  0, 66)

* 30P/Reinmuth 1

Now it is 16.5 mag (Nov. 2, Martin Masek). It stays 16 mag for a while. In the Northern Hemisphere, it stays observable in good condition. In the Southern Hemisphere, it will be getting higher gradually. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec.  7  13 23.80   -2 31.1   2.473   2.071    54   16.1   5:24 (303, 34)  
Dec. 14  13 36.69   -3 26.8   2.436   2.100    58   16.1   5:29 (308, 37)

* C/2019 U5 ( PanSTARRS )

Now it is 16.0 mag (Dec. 2, ATLAS South Africa). It stays 17 mag for a while. It stays extremely low in the Northern Hemisphere. In the Southern Hemisphere, it stays observable in good condition. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec.  7   7  5.13  -50 34.3   6.103   6.371   101   16.1   2:02 (  0,  4)  
Dec. 14   6 55.44  -51  0.9   6.119   6.416   103   16.1   1:25 (  0,  4)

* 305P/Skiff

Now it is 16.8 mag (Dec. 3, ATLAS Chile). Fading gradually. It will be fainter than 18 mag in March. It stays observable in good condition. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec.  7  23 56.15    6 27.4   0.804   1.439   106   16.1  18:52 (  0, 62)  
Dec. 14   0 18.46    6 42.1   0.850   1.455   104   16.1  18:46 (  0, 62)

* C/2023 T3 ( Fuls )

Now it is 16.8 mag (Nov. 30, ATLAS South Africa). It stays 16 mag for a while. It locates somewhat low in the Northern Hemisphere. In the Southern Hemisphere, it stays observable in good condition. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec.  7  12 21.54  -26 59.8   3.941   3.577    61   16.2   5:24 (333, 22)  
Dec. 14  12 29.67  -28  5.0   3.857   3.569    65   16.2   5:29 (339, 23)

* (3200) Phaethon

Parent asteroid of Geminids meteor shower. Now it is 16.0 mag (Nov. 30, Katsumi Yoshimoto). Brightening gradually. It will be unobservable in March. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec.  7   3  2.54   34 34.5   0.907   1.839   152   16.2  21:54 (  0, 89)  
Dec. 14   2 37.97   31 42.2   0.898   1.780   142   16.3  21:03 (  0, 87)

* C/2023 F3 ( ATLAS )

Now it is 16.5 mag (June 6, Giuseppe Pappa). It stays 16 mag for a while. It stays extremely low in the Northern Hemisphere. In the Southern Hemisphere, it will be getting higher gradually. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec.  7  13 44.18  -42 12.5   5.871   5.209    44   16.5   5:24 (326,  1)  
Dec. 14  13 44.20  -42 45.8   5.791   5.205    49   16.5   5:29 (331,  4)

* C/2019 L3 ( ATLAS )

It brightened up to 8.3 mag in 2021-2022 winter (Jan. 6, 2022, Toshiyuki Takahashi). Now it is 15.1 mag (Aug. 2, Thomas Lehmann). It stays 17 mag for a while. In the Northern Hemisphere, it will never be observable after this. In the Southern Hemisphere, it stays observable in good condition. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec.  7  12 31.39  -53 41.5   9.699   9.212    57   16.5   5:24 (342, -3)  
Dec. 14  12 34.04  -54 21.6   9.686   9.256    61   16.5   5:29 (347, -2)

* C/2022 L2 ( ATLAS )

Now it is 16.7 mag (Dec. 2, ATLAS South Africa). Fading slowly. It will be fainter than 18 mag in March. It stays extremely low in the Northern Hemisphere. In the Southern Hemisphere, it stays observable in good condition. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec.  7   9  7.23  -41 26.4   3.647   3.834    93   16.6   4:04 (  0, 13)  
Dec. 14   8 54.58  -42 22.2   3.609   3.882    98   16.7   3:24 (  0, 13)

* C/2023 R1 ( PanSTARRS )

Now it is 16.7 mag (Nov. 28, A. Diepvens). It stays 16 mag for a while. It will be unobservable soon in the Southern Hemisphere, or in February in the Northern Hemisphere. But it will be observable again in March in the Northern Hemisphere, or in April in the Southern Hemisphere. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec.  7  22 12.03   20 13.7   5.514   5.573    88   16.7  18:18 ( 52, 68)  
Dec. 14  22 10.92   19 30.5   5.588   5.530    81   16.7  18:20 ( 62, 63)

* 276P/Vorobjov

Now it is 16.9 mag (Nov. 30, ATLAS South Africa). It stays 17 mag for a while. It stays observable in good condition. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec.  7   2 43.43    9 30.8   3.044   3.899   145   16.7  21:37 (  0, 65)  
Dec. 14   2 41.45    9 10.0   3.108   3.899   138   16.8  21:08 (  0, 64)

* C/2020 K1 ( PanSTARRS )

It brightened up to 12.1 mag in 2023 spring (May 20, 2023, Jose Guilherme de S. Aguiar). Now it is 16.7 mag (Nov. 12, ATLAS South Africa). It stays 17 mag for a while. It locates somewhat low in the Northern Hemisphere. In the Southern Hemisphere, it stays observable in good condition. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec.  7   6 26.06  -41 28.9   5.612   6.058   112   16.8   1:23 (  0, 13)  
Dec. 14   6 19.61  -41 12.7   5.634   6.107   114   16.8   0:49 (  0, 14)

* C/2019 E3 ( ATLAS )

Very far object. Now it is 16.8 mag (Nov. 6, ATLAS Chile). It stays 17 mag for a while. In the Northern Hemisphere, it is not observable now. In the Southern Hemisphere, it stays observable in good condition. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec.  7   0 56.45  -66 11.3  10.635  10.519    80   16.9  19:50 (  0,-11)  
Dec. 14   0 52.50  -65 25.3  10.696  10.526    77   16.9  19:18 (  0,-10)

* 32P/Comas Sola

It brightened up to 13.5 mag in last winter (Dec. 5, 2023, Chris Wyatt). Now it is 16.6 mag (Nov. 10, J. Nicolas, F. Kugel). It stays 17 mag for a while. In the Northern Hemisphere, it stays observable in good condition. In the Southern Hemisphere, it will be getting higher gradually. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec.  7  13 35.17   -3 13.4   3.306   2.810    52   16.9   5:24 (301, 32)  
Dec. 14  13 43.77   -4  3.1   3.264   2.847    56   16.9   5:29 (307, 35)

* 154P/Brewington

It brightened up to 12.0 mag in June (June 13, Ken-ichi Kadota). Now it is 18.0 mag (Nov. 28, Ken-ichi Kadota). Fading gradually. It will be fainter than 18 mag in February. In the Northern Hemisphere, it stays observable in good condition. It locates somewhat low in the Southern Hemisphere. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec.  7   9 46.19   31 59.3   1.828   2.425   115   17.0   4:43 (  0, 87)  
Dec. 14   9 45.04   32 11.7   1.800   2.475   122   17.1   4:14 (  0, 87)

* 242P/Spahr

Now it is 17.3 mag (Dec. 2, ATLAS Chile). It stays 17 mag for a while. It stays observable in good condition. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec.  7   3 57.12  -16 54.2   3.185   3.972   138   17.1  22:50 (  0, 38)  
Dec. 14   3 53.70  -16 57.1   3.225   3.972   133   17.1  22:19 (  0, 38)

* 492P/2024 O3 ( LINEAR )

First return of a new periodic comet which brightened up to 15 mag in 2010. Now it is 19.1 mag (Nov. 28, Yasukazu Ikari). Fading gradually. It will be fainter than 18 mag in February. In the Northern Hemisphere, it stays observable in good condition. It locates somewhat low in the Southern Hemisphere. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec.  7   9 45.21   29 33.0   1.688   2.292   115   17.3   4:42 (  0, 84)  
Dec. 14   9 46.70   29 51.7   1.659   2.335   122   17.3   4:16 (  0, 85)

* (308607) 2005 WY3

Peculiar asteroid moving along a cometary orbit. Now it is 18.5 mag (Sept. 11, ATLAS-HKO, Haleakala). It stays 17 mag for a while. It stays observable in good condition. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec.  7   3 33.21  -15  0.9   1.885   2.694   137   17.3  22:26 (  0, 40)  
Dec. 14   3 28.54  -15 32.6   1.886   2.646   131   17.4  21:54 (  0, 40)

* 49P/Arend-Rigaux

It will brighten up to 14 mag in 2025 spring. Now it is 17.3 mag (Dec. 2, ATLAS South Africa). It will brighten rapidly after this. In the Southern Hemisphere, it will be getting lower gradually. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec.  7  23 45.98  -25 45.4   1.660   1.944    90   17.4  18:40 (  0, 29)  
Dec. 14  23 52.71  -24 12.5   1.687   1.899    86   17.4  18:20 (  0, 31)

* C/2021 S4 ( Tsuchinshan )

Now it is 17.8 mag (Nov. 6, Toshihiko Ikemura, Hirohisa Sato). It stays 18 mag for a while. In the Northern Hemisphere, it stays observable in good condition. It stays extremely low in the Southern Hemisphere. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec.  7   7 40.19   41 15.6   6.251   7.042   140   17.4   2:37 (180, 84)  
Dec. 14   7 38.17   41 28.4   6.211   7.056   146   17.4   2:08 (180, 84)

* 253P/PanSTARRS

Now it is 17.4 mag (Nov. 30, ATLAS South Africa). Fading gradually. It will be fainter than 18 mag in January. In the Northern Hemisphere, it stays observable in good condition. In the Southern Hemisphere, it will be getting lower gradually. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec.  7   0 50.63   -1 49.4   1.431   2.059   115   17.5  19:45 (  0, 53)  
Dec. 14   0 56.86   -0 56.2   1.509   2.070   110   17.6  19:24 (  0, 54)

* C/2022 U1 ( Leonard )

Now it is 17.4 mag (Nov. 7, ATLAS-HKO, Haleakala). It stays 18 mag for a while. It locates somewhat low in the Northern Hemisphere. But it will become high in spring. In the Southern Hemisphere, it is not observable now, but it will appear in March. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec.  7  19 13.32   16 58.0   5.251   4.709    52   17.5  18:18 ( 89, 32)  
Dec. 14  19 15.96   16  9.4   5.342   4.735    47   17.6  18:20 ( 92, 26)

* 195P/Hill

Now it is 17.5 mag (Dec. 1, ATLAS South Africa). It stays 18 mag for a while. It stays observable in good condition. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec.  7   6 56.25   -6  2.0   3.785   4.573   138   17.8   1:53 (  0, 49)  
Dec. 14   6 52.74   -6 46.5   3.738   4.565   143   17.7   1:22 (  0, 48)

* C/2024 A2 ( ATLAS )

Now it is 17.8 mag (Nov. 30, Ken-ichi Kadota). Fading gradually. It will be fainter than 18 mag soon. In the Northern Hemisphere, it stays observable in good condition. It stays extremely low in the Southern Hemisphere. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec.  7   4  7.65   41 24.6   2.223   3.161   158   17.7  23:00 (180, 83)  
Dec. 14   3 46.27   41 41.1   2.316   3.220   152   17.9  22:11 (180, 83)

* 50P/Arend

Now it is 18.8 mag (Dec. 1, Yasukazu Ikari). Fading slowly. It will be fainter than 18 mag in January. In the Northern Hemisphere, it stays observable in good condition. It locates somewhat low in the Southern Hemisphere. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec.  7  10 13.47   31 41.0   2.105   2.613   110   17.8   5:10 (  0, 87)  
Dec. 14  10 14.70   31 52.7   2.059   2.649   116   17.8   4:44 (  0, 87)

* C/2024 G2 ( ATLAS )

Now it is 17.9 mag (May 17, J. L. Virlichie, P. Traverse, H. Roy). It stays 17 mag for a while. It stays extremely low in the Northern Hemisphere. But it will become high in autumn. In the Southern Hemisphere, it stays observable in good condition. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec.  7  12 58.80  -47 29.6   6.066   5.527    52   17.8   5:24 (336,  1)  
Dec. 14  13  0.30  -47 42.0   5.982   5.514    57   17.8   5:29 (340,  3)

* (468861) 2013 LU28

Now it is 18.0 mag (Aug. 18, Taras Prystavski). It stays 18 mag for a while. In the Northern Hemisphere, it stays observable in good condition. It stays extremely low in the Southern Hemisphere. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec.  7   7 40.98   37 45.0   8.005   8.797   141   17.9   2:38 (180, 87)  
Dec. 14   7 35.82   37 43.7   7.945   8.801   148   17.9   2:06 (180, 87)

* C/2023 U1 ( Fuls )

Now it is 17.8 mag (Dec. 1, ATLAS South Africa). It stays 18 mag for a while. In the Northern Hemisphere, it will never be observable after this. In the Southern Hemisphere, it stays observable in good condition. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec.  7   5  0.13  -59 56.5   4.767   4.991    97   17.9  23:51 (  0, -5)  
Dec. 14   4 42.76  -60 23.1   4.797   4.996    95   17.9  23:06 (  0, -5)

* 117P/Helin-Roman-Alu 1

Now it is 17.7 mag (Nov. 28, A. Diepvens). Fading slowly. It will be fainter than 18 mag soon. In the Northern Hemisphere, it stays observable in good condition. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec.  7   2 58.25   15 40.5   3.688   4.579   151   17.9  21:52 (  0, 71)  
Dec. 14   2 54.96   15 35.0   3.760   4.591   143   18.0  21:21 (  0, 71)

* P/2024 S2 ( Rankin )

Now it is 17.4 mag (Oct. 1, Martin Masek). Fading gradually. It will be fainter than 18 mag soon. In the Northern Hemisphere, it stays observable in good condition. It locates somewhat low in the Southern Hemisphere. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Dec.  7   7  2.77   35 33.6   1.281   2.187   149   17.9   2:00 (180, 89)  
Dec. 14   6 58.88   35 55.6   1.273   2.210   156   18.0   1:29 (180, 89)

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