Weekly Information about Bright Comets (2026 June 6: South)

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 Updated on June 8, 2026
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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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* 220P/McNaught

Major outburst of about 9 mag occured from May 31 to June 1. Now it is 8.3 mag (June 3, Marco Goiato). Probably, it will fade out rapidly after this. 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  6   0 12.42    2  2.0   1.555   1.561    71    8.4   5:31 (219, 46)  
June 13   0 31.24    3 23.5   1.514   1.559    73    8.6   5:34 (214, 46)

* C/2025 R3 ( PanSTARRS )

It brightened up to 4.0 mag in late April (Apr. 30, Chris Wyatt). It brightened up to 1.3 mag due to the forward scattering in the SOHO LASCO images (Apr. 25, Mikolaj Kaszczyk). Now it is 8.8 mag (May 31, Marco Goiato). Fading rapidly. In the Northern Hemisphere, it is not observable now, but it will appear in September. It locates somewhat 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  6   6 42.16  -10 46.1   1.664   1.143    42    9.5  18:25 ( 92, 22)  
June 13   6 50.51  -11  5.5   1.852   1.262    40   10.2  18:25 ( 89, 19)

* 10P/Tempel 2

It is expected to brighten up to 8 mag in summer. Now it is 12.9 mag (May 29, Mitsunori Tsumura). Brightening gradually. It stays observable in good condition. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June  6  20 19.62   -8 25.6   0.683   1.538   128   10.3   3:23 (180, 63)  
June 13  20 32.31   -8 58.9   0.626   1.512   132    9.9   3:08 (180, 64)

* 88P/Howell

Now it is 11.1 mag (May 29, Toru Yusa). Fading 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  6   1 15.97    4 22.1   1.936   1.604    55   10.7   5:31 (234, 34)  
June 13   1 31.06    5 52.4   1.927   1.643    58   10.9   5:34 (229, 35)

* 78P/Gehrels 2

It stays 12 mag for a while. In the Northern Hemisphere, it is not observable now, but it will be observable soon. 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  6   3  3.89   16 55.9   2.866   2.011    26   12.5   5:31 (244,  6)  
June 13   3 20.83   17 48.5   2.831   2.007    29   12.4   5:34 (241,  8)

* C/2023 R1 ( PanSTARRS )

Now it is 12.9 mag (May 31, Toru Yusa). Fading slowly. It stays observable in good condition. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June  6  17 51.76   -6 28.6   2.638   3.603   158   13.3   0:57 (180, 61)  
June 13  17 34.43   -7 10.0   2.626   3.612   163   13.3   0:12 (180, 62)

* 141P/Machholz 2

The condition is very bad in this apparition. It is not observable at all. It will fade out rapidly after this. It will be fainter than 18 mag in July. It will never be observable after this. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June  6   5 48.59   18 54.9   2.028   1.065    13   13.6  18:25 (109, -5)  
June 13   6 18.31   18  4.1   2.095   1.134    13   14.2  18:25 (109, -4)

* C/2024 T5 ( ATLAS )

Now it is 13.9 mag (Mar. 12, ATLAS South Africa). Brightening slowly. 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. It is expected to brighten up to 11 mag in next winter. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June  6   4 15.83  -16  8.8   5.532   4.798    39   13.7   5:31 (282, 12)  
June 13   4 22.85  -15 32.5   5.477   4.763    41   13.7   5:34 (278, 16)

* C/2024 J3 ( ATLAS )

Now it is 14.1 mag (May 29, Toru Yusa). It stays 14 mag for a while. 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)  
June  6  20 14.44   30 28.9   3.711   4.146   108   13.8   3:18 (180, 25)  
June 13  20  9.63   32 33.1   3.641   4.125   111   13.7   2:46 (180, 22)

* 29P/Schwassmann-Wachmann 1

Now it is 12.2 mag (May 30, Toru Yusa). It will be getting lower gradually after this, and 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  6  11  1.51   -0 56.3   6.200   6.316    91   14.0  18:25 (170, 56)  
June 13  11  3.22   -1  2.8   6.310   6.316    85   14.0  18:25 (159, 54)

* C/2014 UN271 ( Bernardinelli-Bernstein )

Very large comet. It is expected to brighten up to 13 mag in 2031. Now it is 14.9 mag (May 19, Andrew Pearce). 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  6   5 51.32  -68  5.3  13.859  13.918    91   14.6  18:25 ( 27, 35)  
June 13   5 58.23  -68  1.3  13.835  13.897    91   14.6  18:25 ( 26, 33)

* 235P/LINEAR

It became brighter than expected. Now it is 14.2 mag (May 17, Ken-ichi Kadota). It will fade out rapidly after this. It will be fainter than 18 mag in August. It stays observable in good condition. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June  6  16 53.85   -8 35.3   1.353   2.350   165   14.6  23:54 (180, 64)  
June 13  16 48.59   -8 16.3   1.388   2.377   162   14.9  23:21 (180, 63)

* 63P/Wild 1

Now it is 14.8 mag (May 31, Toru Yusa). It stays 15 mag for a while. 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  6   8 55.31   24 23.8   2.403   1.997    54   14.9  18:25 (144, 21)  
June 13   9 10.25   22 23.2   2.447   1.988    51   14.8  18:25 (140, 21)

* P/2021 N1 ( ZTF )

First return of a new periodic comet which brightened up to 17 mag in 2021. It will approach to Earth down to 0.17 a.u. from June to July. It is expected to brighten up to 14 mag. It brightens up to 14 mag, but it will turn to fade out rapidly after that. In the Northern Hemisphere, it will be getting higher gradually. In the Southern Hemisphere, it will be getting lower gradually. But it will be getting higher again after June. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June  6  20 47.13  -51  1.6   0.285   1.209   127   15.6   3:50 (  0, 74)  
June 13  21 53.16  -47  4.3   0.232   1.155   121   15.0   4:28 (  0, 78)

* 260P/McNaught

It will brighten up to 13 mag and will be observable in good condition from summer to autumn. Now it is 15.9 mag (May 28, Ken-ichi Kadota). 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  6   0 26.62   -3 23.5   1.584   1.567    70   15.4   5:31 (228, 48)  
June 13   0 45.03   -0 24.0   1.518   1.536    71   15.0   5:34 (221, 47)

* C/2022 QE78 ( ATLAS )

Now it is 15.2 mag (May 18, Toru Yusa). It stays 15 mag for a while. It will be unobservable in July in the Southern Hemisphere, or in August in the Northern Hemisphere. But it will be observable again in September in the Northern Hemisphere. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June  6   9 28.25   31  9.2   6.243   5.814    60   15.1  18:25 (154, 19)  
June 13   9 33.33   30 54.4   6.347   5.831    55   15.2  18:25 (150, 17)

* C/2021 G2 ( ATLAS )

Now it is 15.3 mag (May 25, Ken-ichi Kadota). 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  6  17 15.61   15 14.3   6.050   6.876   141   15.3   0:20 (180, 40)  
June 13  17 12.80   15 34.4   6.090   6.910   141   15.3  23:46 (180, 39)

* C/2024 R4 ( PanSTARRS )

Now it is 15.4 mag (May 27, ATLAS-MLO, Mauna Loa). It stays 15 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  6  22 10.79   39 57.1   6.008   5.981    83   15.4   5:14 (180, 15)  
June 13  22  7.89   41 16.0   5.893   5.945    87   15.3   4:44 (180, 14)

* 24P/Schaumasse

It brightened up to 8.4 mag in January (Jan. 14, Mitsunori Tsumura). Now it is 14.3 mag (May 31, Toru Yusa). Fading rapidly. 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  6  14 15.84   -4 22.2   1.280   2.141   137   15.4  21:17 (180, 60)  
June 13  14 15.81   -5 30.7   1.392   2.200   131   15.9  20:50 (180, 61)

* C/2022 N2 ( PanSTARRS )

Now it is 15.8 mag (May 7, Ken-ichi Kadota). It stays 16 mag for a while. Now it is not observable. It will appear in July in the Northern Hemisphere, or in August in the Southern Hemisphere. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June  6   5 31.34   26 57.7   5.665   4.667     9   15.5  18:25 (114,-13)  
June 13   5 39.91   26 59.9   5.711   4.701     5   15.5  18:25 (111,-17)

* 123P/West-Hartley

It will brighten up to 15 mag from autumn to winter. Now it is 17.6 mag (May 17, Kunihiro Shima). It stays 15 mag for a while. In the Northern Hemisphere, it will be unobservable soon. But it will be observable again in September. In the Southern Hemisphere, it is not observable now. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June  6   6 45.33   33  6.8   3.176   2.313    26   15.8  18:25 (128, -4)  
June 13   7  2.06   32 50.4   3.188   2.295    23   15.7  18:25 (127, -6)

* 93P/Lovas 1

Now it is 16.0 mag (Jan. 18, Kunihiro Shima). Fading slowly. Now it is not observable. It will appear in August 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  6   4 47.57   30  7.6   2.725   1.725     7   15.7   5:31 (247,-20)  
June 13   5 10.10   30 37.0   2.741   1.741     8   15.8   5:34 (245,-19)

* C/2025 Y1 ( ATLAS )

Now it is 16.3 mag (May 24, ATLAS-MLO, Mauna Loa). It stays 16 mag for a while. It will be getting lower gradually after this, and it will be unobservable in September. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June  6  12 39.79    4 41.7   5.005   5.467   112   16.4  19:41 (180, 50)  
June 13  12 39.71    4 39.7   5.055   5.415   105   16.4  19:14 (180, 50)

* C/2024 G6 ( ATLAS )

Now it is 16.6 mag (May 26, 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)  
June  6  15 39.02   13 19.8   5.664   6.470   139   16.5  22:39 (180, 42)  
June 13  15 33.58   13 55.5   5.727   6.475   134   16.5  22:06 (180, 41)

* C/2025 A6 ( Lemmon )

It brightened up to 3.7 mag in late October (Oct. 26, Juan Jose Gonzalez). Now it is 16.4 mag (May 25, ATLAS Chile). It will fade out rapidly after this. It will be fainter than 18 mag in July. In the Northern Hemisphere, it will be unobservable soon. 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  6  10 46.84  -37 51.2   3.055   3.416   102   16.6  18:25 ( 66, 82)  
June 13  10 47.86  -36 10.0   3.233   3.500    96   16.9  18:25 ( 80, 77)

* C/2022 R6 ( PanSTARRS )

Now it is 16.5 mag (May 22, ATLAS Chile). It stays 17 mag for a while. It will be unobservable soon in the Northern Hemisphere, or in August in the Southern Hemisphere. But it will be observable again in September. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June  6   8 49.39    3 49.3   7.291   6.835    59   16.7  18:25 (129, 37)  
June 13   8 53.18    4  9.0   7.396   6.848    53   16.7  18:25 (124, 33)

* 65P/Gunn

Now it is 18.0 mag (May 24, Andrew Pearce). It stays 17 mag for a while. 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  6   0 25.04   -6 30.6   3.545   3.373    72   17.0   5:31 (230, 51)  
June 13   0 30.97   -6  4.2   3.466   3.388    77   17.0   5:34 (222, 54)

* 169P/NEAT

It will approach to Earth down to 0.17 a.u. in August. It is expected to brighten up to 10 mag from August to September. Now it is 17.7 mag (May 23, W. Hasubick). It will brighten rapidly after this. It will be getting lower gradually after this, and it will be unobservable in August. But it will be observable again in 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  6  19 36.73    1  6.8   0.898   1.761   133   17.4   2:41 (180, 54)  
June 13  19 35.86    3 13.4   0.784   1.684   138   17.0   2:13 (180, 52)

* C/2025 M2 ( PanSTARRS )

It is expected to brighten up to 12 mag from 2027 to 2028. Now it is 17.1 mag (May 23, ATLAS-MLO, Mauna Loa). 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  6  20 50.47  -17 12.2   5.130   5.767   124   17.2   3:55 (180, 72)  
June 13  20 45.15  -17 28.5   4.979   5.716   132   17.1   3:22 (180, 72)

* C/2024 G4 ( PanSTARRS )

Now it is 17.6 mag (May 25, Alfons Diepvens). 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  6  20 22.76    4 17.2   4.316   4.936   122   17.1   3:27 (180, 51)  
June 13  20 22.27    4 12.6   4.246   4.943   128   17.1   2:59 (180, 51)

* C/2026 A2 ( Bok )

It will brighten up to 14 mag from autumn to winter. Now it is 17.1 mag (May 22, ATLAS-MLO, Mauna Loa). Brightening gradually. 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)  
June  6  18 16.12   74 38.7   3.014   3.041    81   17.2   1:19 (180,-20)  
June 13  18  4.44   76  7.3   2.977   2.983    80   17.1   0:40 (180,-21)

* C/2025 E1 ( PanSTARRS )

Now it is 17.3 mag (May 16, ATLAS South Africa). 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)  
June  6   8 34.87  -63  6.8   3.877   4.107    95   17.1  18:25 ( 29, 52)  
June 13   8 38.24  -62 49.6   3.893   4.094    94   17.1  18:25 ( 31, 49)

* C/2023 X2 ( Lemmon )

Now it is 17.0 mag (May 17, Kunihiro Shima). It stays 18 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  6  13 19.51   83 29.3   5.467   5.231    71   17.3  20:19 (180,-28)  
June 13  13 16.64   81 53.1   5.489   5.244    70   17.3  19:49 (180,-27)

* C/2022 E2 ( ATLAS )

It was observed at 12-13 mag for a long time in 2024. Now it is 17.2 mag (May 17, ATLAS-HKO, Haleakala). It stays 18 mag for a while. 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)  
June  6  23 13.09   31 30.5   6.641   6.449    74   17.3   5:31 (190, 23)  
June 13  23 11.45   31 46.1   6.583   6.493    80   17.3   5:34 (183, 23)

* C/2019 E3 ( ATLAS )

Very far object. 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. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June  6   0 42.96  -42 29.6  11.445  11.439    87   17.4   5:31 (296, 63)  
June 13   0 43.50  -42 37.4  11.374  11.455    92   17.4   5:34 (298, 68)

* C/2025 V2 ( Rankin )

It is expected to brighten up to 12.5 mag in 2027 spring. Now it is 17.6 mag (May 21, ATLAS-HKO, Haleakala). Brightening slowly. It will be unobservable in August. But it will be observable again in October in the Northern Hemisphere. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June  6   9 22.42   23 22.0   4.214   3.827    61   17.5  18:25 (149, 25)  
June 13   9 28.24   23 16.1   4.243   3.766    55   17.4  18:25 (145, 23)

* 218P/LINEAR

It will fade out rapidly after this. It will be fainter than 18 mag soon. 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  6  23 25.11   -1 24.6   1.359   1.602    83   17.6   5:31 (205, 54)  
June 13  23 33.65   -0 33.6   1.346   1.656    87   17.9   5:34 (195, 54)

* C/2023 F3 ( ATLAS )

Now it is 17.5 mag (May 17, Kunihiro Shima). It stays 18 mag for a while. In the Northern Hemisphere, it will be unobservable soon. In the Southern Hemisphere, it will be getting lower gradually. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June  6   9  0.40   -5 43.7   6.670   6.331    66   17.6  18:25 (123, 46)  
June 13   9  1.35   -5 12.2   6.804   6.360    60   17.7  18:25 (117, 41)

* C/2023 H5 ( Lemmon )

Now it is 17.8 mag (May 25, Alfons Diepvens). It stays 18 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  6  22 15.08   66 23.6   5.329   5.130    73   17.7   5:18 (180,-12)  
June 13  22 12.53   66 48.7   5.320   5.160    75   17.7   4:48 (180,-12)

* P/2012 K3 ( Gibbs )

It was observed at 17 mag in 2012. It was not recovered at the previous return in 2019. It stays 18 mag for a while. It stays observable in good condition. Now it is fainter than 20 mag (May 24, Jean-Francois Soulier). 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June  6  20 19.98  -11  4.5   1.326   2.123   129   17.9   3:24 (180, 66)  
June 13  20 22.45  -11 31.6   1.265   2.116   135   17.8   2:59 (180, 66)

* C/2026 C1 ( Tsuchinshan )

It is expected to brighten up to 4 mag in 2028 autumn. Now it is 17.3 mag (May 18, Alfons Diepvens). It stays 18 mag for a while. It will be getting lower gradually after this, and it will be unobservable in August in the Northern Hemisphere, or in September in the Southern Hemisphere. At the high light, it is observable in excellent condition in the Southern Hemisphere. In the Northern Hemisphere, it becomes observable after the perihelion passage. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June  6  12  7.54    7 41.7   8.838   9.129   103   17.8  19:09 (180, 47)  
June 13  12  6.43    7 33.9   8.901   9.076    96   17.8  18:40 (180, 48)

* 195P/Hill

Now it is 17.4 mag (May 21, ATLAS South Africa). It stays 18 mag for a while. It stays extremely low in the Northern Hemisphere. In the Southern Hemisphere, it will be getting lower gradually. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June  6   9 43.77  -23 32.5   4.641   4.646    84   17.8  18:25 (111, 66)  
June 13   9 49.29  -23 10.3   4.733   4.655    79   17.9  18:25 (106, 61)

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