Weekly Information about Bright Comets (2025 June 28: South)

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Updated on July 4, 2025
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Best time and the azimuth, altitude (A,h) are at lat. 35 deg in the Southern Hemisphere.
Azimuth indicates 0 for south, 90 for west, 180 for north, 270 for east.

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* 217P/LINEAR

Now it is 13.1 mag (June 22, Martin Masek). It will fade out rapidly after this. In the Northern Hemisphere, it is not observable now, but it will appear in July. It stays extremely low in the Southern Hemisphere. But it will become high in autumn.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June 28   4 24.97   13 34.3   2.071   1.302    30   13.4   5:38 (245, 11)  
July  5   4 48.60   14 26.6   2.094   1.334    31   13.6   5:38 (243, 11)  

* C/2023 A3 ( Tsuchinshan-ATLAS )

It brightened up to -3 mag due to the forward scattering in the SOHO coronagraph images (Oct. 9, 2024, Q.-c. Zhang, Charles S. Morris). It became a great comet of 0 mag on the ground. Now it is 13.7 mag (June 23, Thomas Lehmann). Fading gradually. In the Northern Hemisphere, it stays observable in good condition. It locates somewhat low in the Southern Hemisphere. But it will become high in spring.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June 28  19  2.83   28 57.5   3.586   4.277   127   13.6   0:40 (180, 26)  
July  5  18 52.49   28 38.8   3.648   4.355   128   13.7   0:02 (180, 26)  

* C/2022 N2 ( PanSTARRS )

Now it is 15.0 mag (June 17, Thomas Lehmann). It stays 14 mag for a while. In the Northern Hemisphere, it will be getting higher gradually. It locates somewhat low in the Southern Hemisphere.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June 28   2 29.60   19 33.2   4.328   3.837    55   14.0   5:38 (219, 25)  
July  5   2 37.53   20 17.9   4.244   3.833    59   14.0   5:38 (214, 27)  

* 29P/Schwassmann-Wachmann 1

Now it is 13.0 mag (June 5, Osamu Miyazaki). It will be unobservable in July in the Northern Hemisphere, or in August in the Southern Hemisphere. But it will be observable again in September in the Northern Hemisphere, or in October in the Southern Hemisphere.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June 28   9 56.22    8 58.8   6.860   6.284    51   14.2  18:28 (128, 29)  
July  5  10  0.10    8 36.7   6.944   6.285    46   14.2  18:31 (122, 25)  

* C/2021 G2 ( ATLAS )

Now it is 13.6 mag (June 21, Osamu Miyazaki). It stays 15 mag for a while. 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 October.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June 28  15  5.16   -1 48.0   4.792   5.459   126   14.3  20:39 (180, 57)  
July  5  15  4.65   -1 25.9   4.901   5.481   120   14.3  20:11 (180, 57)  

* C/2024 G3 ( ATLAS )

It approached to Sun down to 0.09 a.u. on Jan. 13. It brightened up to -2 or -3 mag and it was detected even in the daylight. The nucleus was disintegrated on Jan. 19. However, its remnant is still visible. Fading gradually. 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)  
June 28   3 23.58  -61 52.2   3.014   3.226    92   14.5   5:38 (326, 49)  
July  5   3 34.41  -64  3.3   3.068   3.319    95   14.6   5:38 (331, 50)  

* C/2024 E1 ( Wierzchos )

It is expected to brighten up to 5 mag in 2026 January. Now it is 14.7 mag (June 26, Juan Jose Gonzalez). It will brighten rapidly after this. In the Northern Hemisphere, it stays observable in good condition. In the Southern Hemisphere, it is not observable now, but it will appear in July.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June 28  16 53.99   57 14.0   3.092   3.373    97   14.7  22:25 (180, -2)  
July  5  16 40.97   56 11.5   3.022   3.288    95   14.6  21:45 (180, -1)  

* 21P/Giacobini-Zinner

It brightened up to 11 mag in the SWAN images (Jan. 27, Vladimir Bezugly). It will fade out rapidly after this. It will be fainter than 18 mag in October. Now it is not observable. It will appear in July in the Southern Hemisphere, or in September in the Northern Hemisphere.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June 28   6 11.67    4  7.4   2.542   1.619    19   14.7   5:38 (268, -4)  
July  5   6 30.40    3 22.6   2.600   1.684    20   15.0   5:38 (267, -2)  

* 48P/Johnson

Now it is 15.4 mag (June 13, A. Sankovich). Fading slowly. In the Northern Hemisphere, it will be getting higher gradually. In the Southern Hemisphere, it stays observable in good condition.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June 28   2 29.89    3 38.6   2.520   2.204    60   14.8   5:38 (230, 38)  
July  5   2 41.79    4 15.2   2.476   2.226    64   14.8   5:38 (225, 40)  

* C/2022 E2 ( ATLAS )

It was observed at 12-13 mag for a long time in 2024. Now it is 14.7 mag (June 20, Thomas Lehmann). It stays 15 mag for a while. In the Northern Hemisphere, it stays observable in good condition. In the Southern Hemisphere, it is not observable now, but it will appear in September.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June 28   1 50.43   52 48.8   4.890   4.455    59   14.8   5:38 (196, -1)  
July  5   1 47.54   53 31.6   4.836   4.489    64   14.8   5:38 (192,  0)  

* C/2023 R1 ( PanSTARRS )

It is expected to brighten up to 13 mag in early summer in 2026. Now it is 15.5 mag (June 20, Roland Fichtl). It stays 15 mag for a while. In the Northern Hemisphere, it stays observable in good condition. It locates somewhat low in the Southern Hemisphere. But it will become high in summer.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June 28  22  5.23   25 15.6   3.983   4.409   108   14.9   3:42 (180, 30)  
July  5  21 56.42   25 28.3   3.847   4.373   114   14.8   3:05 (180, 29)  

* C/2022 QE78 ( ATLAS )

Now it is 14.6 mag (May 10, Alfons Diepvens). It stays 15 mag for a while. Now it is not observable. It will appear in August.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June 28   7 28.50   17 58.9   6.478   5.504    15   15.0  18:28 (110, -3)  
July  5   7 35.14   18  7.9   6.497   5.499    10   15.0  18:31 (107, -8)  

* 65P/Gunn

Now it is 15.2 mag (June 3, Thomas Lehmann). Fading slowly. 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)  
June 28  18 40.44  -31 24.2   1.917   2.926   171   15.1   0:18 (180, 86)  
July  5  18 34.89  -31 46.3   1.921   2.927   169   15.1  23:40 (180, 87)  

* C/2014 UN271 ( Bernardinelli-Bernstein )

Very large comet. It is expected to brighten up to 13 mag in 2031. Now it is 14.7 mag (May 24, 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)  
June 28   4 52.24  -65 59.8  14.944  14.998    91   15.1   5:38 (330, 39)  
July  5   4 57.61  -66 14.4  14.908  14.975    91   15.1   5:38 (331, 41)  

* C/2024 J3 ( ATLAS )

It will brighten up to 13 mag in 2026. Now it is 15.5 mag (June 23, Thomas Lehmann). It stays 15 mag for a while. It stays observable in good condition.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June 28  19 20.20  -17 57.6   4.806   5.799   166   15.2   0:57 (180, 73)  
July  5  19 14.75  -17 25.8   4.748   5.758   173   15.2   0:24 (180, 72)  

* 43P/Wolf-Harrington

Now it is 16.5 mag (Apr. 7, Alfons Diepvens). It stays 15 mag for a while. Now it is not observable. It will appear in August.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June 28   6 25.23   19 48.2   3.473   2.459     3   15.2   5:38 (257,-16)  
July  5   6 39.84   19 24.1   3.465   2.454     5   15.2   5:38 (255,-13)  

* C/2025 K1 ( ATLAS )

It is expected to brighten up to 7.5 mag in October. Now it is 15.6 mag (June 25, Roland Fichtl). Brightening rapidly. It will be getting lower gradually after this, and it will be unobservable in September in the Northern Hemisphere, or in October in the Southern Hemisphere. But it will be observable again in August in the Southern Hemisphere. It is not observable for a month around the perihelion passage. But in the Northern Hemisphere, it stays observable in good condition until mid September and after late October. In the Southern Hemisphere, it is observable only before the perihelion passage.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June 28  22 12.00   20 26.1   1.552   2.125   109   15.9   3:48 (180, 34)  
July  5  22  0.56   21 41.5   1.343   2.017   116   15.4   3:10 (180, 33)  

* C/2023 C2 ( ATLAS )

It brightened up to 12.7 mag in 2024 summer (Aug. 7, 2024, Thomas Lehmann). Now it is 14.7 mag (June 22, Thomas Lehmann). Fading slowly. In the Northern Hemisphere, it stays observable in good condition. In the Southern Hemisphere, it will be unobservable in August.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June 28  23 41.05   44 48.3   3.373   3.375    81   15.6   5:17 (180, 10)  
July  5  23 42.32   46 51.9   3.358   3.426    85   15.7   4:51 (180,  8)  

* 47P/Ashbrook-Jackson

Now it is 16.9 mag (June 24, ATLAS South Africa). 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)  
June 28  23 21.60  -12 54.8   2.385   2.894   109   15.9   4:58 (180, 68)  
July  5  23 24.25  -12 31.7   2.293   2.884   115   15.8   4:33 (180, 67)  

* C/2024 J2 ( Wierzchos )

It brightened rapidly up to 14.6 mag in winter (Jan. 31, Thomas Lehmann). Fading gradually. 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)  
June 28   2 29.05    2 49.6   2.506   2.200    60   15.8   5:38 (230, 39)  
July  5   2 38.16    0 34.5   2.455   2.249    66   15.9   5:38 (227, 43)  

* 49P/Arend-Rigaux

Now it is 14.5 mag (May 23, Thomas Lehmann). Fading gradually. It will be fainter than 18 mag in August. It will be unobservable in July.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June 28   8 33.82   24  5.2   2.481   1.666    28   15.8  18:28 (124,  5)  
July  5   8 55.17   23 30.0   2.542   1.704    27   16.1  18:31 (122,  4)  

* C/2025 F2 ( SWAN )

It brightened rapidly up to 7.8 mag on Apr. 8 (Osamu Miyazaki). The nucleus was disintegrated, however, its remnant had been visible until mid May. Fading rapidly. It will be fainter than 18 mag in August. In the Northern Hemisphere, it will never be observable after this. In the Southern Hemisphere, it will be getting higher gradually.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June 28   5 59.74  -31 54.1   1.681   1.388    55   16.0   5:38 (297, 18)  
July  5   6  7.16  -35 39.9   1.746   1.512    59   16.4   5:38 (298, 24)  

* C/2023 T3 ( Fuls )

Now it is 16.2 mag (June 15, ATLAS South Africa). Fading slowly. In the Northern Hemisphere, it will be unobservable in October. In the Southern Hemisphere, it stays observable in good condition.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June 28  13 19.94  -23  4.3   3.336   3.811   110   16.1  18:54 (180, 78)  
July  5  13 24.54  -22 28.6   3.448   3.835   104   16.2  18:31 (180, 78)  

* P/2023 S1 ( PanSTARRS )

It brightened up to 14.4 mag in winter (Feb. 4, Ken-ichi Kadota). Now it is 17.4 mag (June 14, ATLAS-HKO, Haleakala). Fading slowly. It will be unobservable in July in the Northern Hemisphere, or in September in the Southern Hemisphere.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June 28  10  8.11    6 59.4   3.166   2.721    55   16.2  18:28 (129, 33)  
July  5  10 18.13    5 55.8   3.248   2.732    51   16.3  18:31 (123, 30)  

* C/2024 L5 ( ATLAS )

Now it is 16.3 mag (June 9, ATLAS Chile). Fading slowly. It will be unobservable in July in the Northern Hemisphere, or in August in the Southern Hemisphere. But it will be observable again in October.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June 28  11  3.13   -3 51.4   3.758   3.584    72   16.3  18:28 (134, 50)  
July  5  11  2.00   -3 10.1   3.908   3.604    65   16.4  18:31 (126, 44)  

* C/2023 H5 ( Lemmon )

Now it is 16.6 mag (June 23, Thomas Lehmann). It stays 16 mag for a while. In the Northern Hemisphere, it stays observable in good condition. 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)  
June 28  10 52.59   64 21.1   4.748   4.313    58   16.3  18:28 (167,-12)  
July  5  10 59.60   64  7.1   4.781   4.313    57   16.4  18:31 (165,-13)  

* C/2023 F3 ( ATLAS )

Now it is 16.7 mag (June 4, ATLAS Chile). It stays 17 mag for a while. In the Northern Hemisphere, it is not observable now, but it will appear in October. In the Southern Hemisphere, it will be getting lower gradually. But it will be getting higher again after September.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June 28  10 35.40  -26 14.8   5.426   5.306    77   16.4  18:28 ( 97, 59)  
July  5  10 35.70  -25 22.3   5.546   5.317    71   16.5  18:31 ( 93, 53)  

* 88P/Howell

It will brighten up to 9 mag in 2026 spring. Now it is 17.6 mag (June 18, ATLAS-HKO, Haleakala). Brightening gradually. It will be unobservable in August in the Northern Hemisphere, or in September in the Southern Hemisphere.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June 28  10 46.92   11 22.6   3.094   2.778    62   16.5  18:28 (141, 35)  
July  5  10 54.00   10 30.5   3.136   2.736    57   16.4  18:31 (135, 32)  

* C/2019 E3 ( ATLAS )

Very far object. Now it is 16.8 mag (June 6, Taras Prystavski). 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)  
June 28   1 31.17  -54 10.4  10.561  10.783    99   16.9   5:38 (328, 65)  
July  5   1 31.01  -54 29.6  10.510  10.794   103   16.9   5:38 (336, 68)  

* C/2024 T5 ( ATLAS )

Now it is 16.4 mag (June 13, ATLAS South Africa). It stays 17 mag for a while. In the Northern Hemisphere, it is not observable now, but it will appear in July. In the Southern Hemisphere, it stays observable in good condition. It is expected to brighten up to 13 mag in winter between 2026 and 2027.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June 28   2 55.30  -37 32.9   6.900   6.772    78   17.0   5:38 (287, 55)  
July  5   3  0.04  -37 48.2   6.793   6.729    82   16.9   5:38 (286, 60)  

* C/2019 U5 ( PanSTARRS )

Now it is 16.4 mag (May 4, ATLAS South Africa). It stays 17 mag for a while. In the Northern Hemisphere, it is not observable now, but it will appear in August. In the Southern Hemisphere, it will be getting higher gradually.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June 28   5 47.39  -36 17.1   8.118   7.665    60   17.0   5:38 (299, 22)  
July  5   5 49.92  -36 26.4   8.147   7.710    61   17.0   5:38 (297, 27)  

* 362P/(457175) 2008 GO98

Now it is 18.6 mag (June 4, Toshihiko Ikemura, Hirohisa Sato). 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)  
June 28  21 54.90    4 24.8   2.697   3.352   122   17.1   3:31 (180, 50)  
July  5  21 53.76    4 32.2   2.638   3.369   128   17.1   3:03 (180, 50)  

* C/2020 V2 ( ZTF )

It was observed at 9-10 mag for a long time in 2023. Now it is 15.5 mag (June 6, Martin Masek). 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. It is brighter than this ephemeris recently.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June 28  21 41.68  -72 20.4   7.104   7.720   124   17.1   3:19 (  0, 53)  
July  5  21 29.01  -73  5.6   7.137   7.772   125   17.2   2:40 (  0, 52)  

* 302P/Lemmon-PanSTARRS

Now it is 16.9 mag (June 21, 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)  
June 28   0 37.33   -1  6.1   3.202   3.327    88   17.2   5:38 (196, 55)  
July  5   0 42.12   -0 50.9   3.111   3.332    93   17.1   5:38 (186, 56)  

* 3I/2025 N1 ( ATLAS )

Third interstellar object in history following 1I/'Oumuamua and 2I/Borisov. The eccentricity is extremely big as 6. It approaches to Sun down to 1.38 a.u. in late October. It is not observable around the perihelion passage. But it is expected to be observable at 12 mag before and after that time. Now it is 17.2 mag (July 1, M. Jaeger, G. Rhemann, E. Prosperi). It will brighten rapidly after this. It will be getting lower gradually after this, and it will be unobservable in October.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June 28  18 13.89  -18 43.5   3.628   4.641   174   17.5  23:46 (180, 74)  
July  5  17 59.49  -18 38.6   3.412   4.406   166   17.1  23:04 (180, 74)  

* C/2021 S3 ( PanSTARRS )

It brightened up to 9.6 mag from February to March in 2024 (Feb. 25, 2024, Thomas Lehmann). Now it is 17.6 mag (June 4, 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)  
June 28  23 43.76   42 48.4   5.944   5.887    81   17.3   5:20 (180, 12)  
July  5  23 43.46   43 20.2   5.919   5.948    86   17.3   4:52 (180, 12)  

* 351P/Wiegert-PanSTARRS

Now it is brighter than expected. Now it is 17.3 mag (June 7, ATLAS Chile). Fading slowly. It will be fainter than 18 mag in September. It stays observable in good condition.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June 28  20 16.70  -16  4.8   2.229   3.171   153   17.3   1:54 (180, 71)  
July  5  20 12.50  -15 48.5   2.199   3.176   160   17.3   1:22 (180, 71)  

* C/2025 L1 ( ATLAS )

It is expected to brighten up to 13.5 mag and to be observable in good condition in 2026 spring. Now it is 17.6 mag (June 18, ATLAS Chile). Brightening slowly. 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)  
June 28   3 30.00  -55 36.0   2.856   2.988    87   17.5   5:38 (317, 49)  
July  5   3 49.89  -58  6.0   2.746   2.923    89   17.4   5:38 (321, 50)  

* C/2019 L3 ( ATLAS )

It brightened up to 8.3 mag in 2021-2022 winter (Jan. 6, 2022, Toshiyuki Takahashi). Now it is 17.7 mag (May 13, Jean-Claude Merlin). 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)  
June 28  11 53.82  -54 52.7  10.176  10.474   104   17.4  18:28 ( 23, 67)  
July  5  11 55.77  -54 28.2  10.289  10.516   100   17.4  18:31 ( 31, 65)  

* C/2024 G2 ( ATLAS )

Now it is 17.3 mag (June 4, ATLAS Chile). It stays 18 mag for a while. It will be unobservable in July in the Northern Hemisphere, or in September in the Southern Hemisphere. But it will be observable again in October.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June 28  11  6.01  -20 53.4   5.413   5.349    81   17.5  18:28 (113, 62)  
July  5  11  7.69  -19 48.5   5.528   5.351    74   17.5  18:31 (108, 56)  

* C/2024 G6 ( ATLAS )

Now it is 16.5 mag (June 1, Toshihiko Ikemura, Hirohisa Sato). 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)  
June 28  16 13.00  -17 36.8   5.743   6.628   148   17.5  21:46 (180, 73)  
July  5  16  8.06  -16 52.4   5.804   6.617   140   17.5  21:14 (180, 72)  

* 240P/NEAT

It will brighten up to 14 mag and will be observable in good condition from autumn to winter. Now it is 17.0 mag (June 14, A. Sankovich). Brightening gradually. In the Northern Hemisphere, it will be getting higher gradually. In the Southern Hemisphere, it stays observable in good condition.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June 28   2 26.59   -6 19.9   2.750   2.509    65   17.7   5:38 (238, 46)  
July  5   2 37.52   -5 35.3   2.655   2.483    69   17.5   5:38 (232, 48)  

* C/2024 G4 ( PanSTARRS )

Now it is 17.5 mag (June 14, ATLAS-MLO, Mauna Loa). 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)  
June 28  16 47.07   16 45.4   4.568   5.314   133   17.6  22:20 (180, 38)  
July  5  16 45.12   16 19.9   4.590   5.294   129   17.5  21:51 (180, 39)  

* C/2023 V1 ( Lemmon )

Now it is 17.6 mag (June 18, Alfons Diepvens). It stays 18 mag for a while. In the Northern Hemisphere, it stays observable in good condition. In the Southern Hemisphere, it is not observable now, but it will appear in August.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June 28  16 37.43   62  0.9   4.958   5.094    91   17.6  22:08 (180, -7)  
July  5  16 21.58   60 52.6   4.978   5.093    90   17.6  21:25 (180, -6)  

* 2024 XK14

Peculiar asteroid moving along a cometary orbit. Michael Mattiazzo detected a 25-arcsec tail on May 31. Now it is 17.8 mag (May 31, Michael Mattiazzo). It will fade out rapidly after this. It will be fainter than 18 mag in July. 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)  
June 28   4 34.00  -38 35.9   2.275   2.103    67   17.7   5:38 (295, 37)  
July  5   4 50.41  -42 28.3   2.213   2.121    71   17.8   5:38 (299, 40)  

* C/2023 U1 ( Fuls )

Now it is 17.8 mag (June 18, ATLAS Chile). 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)  
June 28   3 25.39  -51 35.6   5.347   5.351    84   17.8   5:38 (311, 50)  
July  5   3 26.24  -52 40.4   5.307   5.371    88   17.8   5:38 (313, 54)  

* C/2023 H1 ( PanSTARRS )

Now it is 16.5 mag (June 22, ATLAS South Africa). Fading slowly. It will be fainter than 18 mag in July. It stays observable in good condition.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June 28  20 12.36  -18 13.2   3.824   4.764   154   17.9   1:49 (180, 73)  
July  5  20  9.37  -17 55.9   3.807   4.785   162   17.9   1:19 (180, 73)  

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