Weekly Information about Bright Comets (2024 Oct. 19: South)

Japanese version Home page	Updated on October 18, 2024
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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.

C/2023 A3 ( Tsuchinshan-ATLAS ) It brightened up to -4.9 mag due to the forward scattering on Oct. 9 in the SOHO coronagraph images (M. Paradowski). It became a great comet of 0 mag on the ground. Now it is 2.6 mag (Oct. 16, Carlos Labordena). It will fade out rapidly after this. It will be unobservable in January in the Northern Hemisphere, or in November in the Southern Hemisphere. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Oct. 19 16 10.31 2 0.9 0.561 0.675 40 3.5 19:47 ( 97, 6) Oct. 26 17 25.12 3 21.0 0.771 0.810 52 4.8 19:55 (103, 13) C/2024 S1 ( ATLAS ) Bright new Kreutz sungrazer comet. It will approach to Sun down to 0.008 a.u. on Oct. 28. It is expected to brighten up to 2 mag, or -4.5 mag at best. Although the brightness evolution almost stopped until mid October, a large outburst occured on Oct. 18 and it brightened up to 10.0 mag (Andrew Pearce). It brightens up to 2 mag, but it will turn to fade out rapidly after that. In the Northern Hemisphere, it is not observable now, but it will appear in November. In the Southern Hemisphere, it will be unobservable soon. But it will be observable again in November. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Oct. 19 11 41.11 -18 42.8 0.914 0.485 29 9.3 3:43 (286, 10) Oct. 26 13 25.40 -17 16.6 0.893 0.194 10 6.1 3:33 (298, -7) 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 9.2 mag (Oct. 13, Osamu Miyazaki). It will fade out rapidly after this. In the Northern Hemisphere, it will be unobservable in November. But it will be observable again in January. In the Southern Hemisphere, it is not observable now, but it will appear in January. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Oct. 19 15 19.45 -1 26.1 2.813 1.980 27 10.6 19:47 ( 86, -3) Oct. 26 15 33.72 -3 31.1 2.918 2.054 24 11.0 19:55 ( 81, -6) C/2022 E2 ( ATLAS ) Now it is 12.6 mag (Oct. 13, Osamu Miyazaki). It stays 12 mag for a while. 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) Oct. 19 7 22.06 56 20.7 3.371 3.680 100 11.9 3:43 (195, -4) Oct. 26 7 11.46 58 44.4 3.268 3.685 107 11.9 3:33 (191, -5) 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 11.3 mag (Sept. 23, Jose Guilherme Aguiar). Fading gradually. In the Northern Hemisphere, it is not observable now, but it will appear in February. It stays extremely low in the Southern Hemisphere. But it will become high in winter. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Oct. 19 14 27.71 -47 31.1 3.555 2.852 39 12.3 19:47 ( 42, 15) Oct. 26 14 42.40 -47 31.6 3.677 2.933 36 12.5 19:55 ( 39, 12) C/2023 C2 ( ATLAS ) Now it is 13.0 mag (Sept. 20, Taras Prystavski). It stays 13 mag for a while. It will be unobservable in January in the Northern Hemisphere, or in December in the Southern Hemisphere. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Oct. 19 17 58.18 -32 29.2 2.649 2.390 64 12.9 19:47 ( 77, 45) Oct. 26 18 11.01 -30 29.7 2.718 2.381 59 12.9 19:55 ( 77, 39) C/2024 B1 ( Lemmon ) It became much brighter than expected. Now it is 13.8 mag (Sept. 8, Michael Jager). It will fade out rapidly after this. It locates somewhat low in the Northern Hemisphere. But it will become high in winter. 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) Oct. 19 13 21.04 45 9.4 1.991 1.641 55 13.4 3:43 (238,-42) Oct. 26 13 54.90 42 39.4 2.006 1.652 55 13.5 3:33 (242,-44) 37P/Forbes Now it is 13.9 mag (Oct. 3, ATLAS South Africa). It will fade out rapidly after this. It will be unobservable in February in the Northern Hemisphere, or in December in the Southern Hemisphere. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Oct. 19 17 13.76 -26 7.6 1.992 1.620 53 13.9 19:47 ( 80, 33) Oct. 26 17 36.43 -25 54.3 2.035 1.624 52 14.0 19:55 ( 78, 31) C/2023 R2 ( PanSTARRS ) It will fade out rapidly after this. It will be fainter than 18 mag in February. In the Northern Hemisphere, it will be unobservable in December. But it will be observable again in January. 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) Oct. 19 15 7.00 -1 43.4 2.325 1.474 24 14.0 19:47 ( 84, -5) Oct. 26 15 29.49 -2 10.6 2.417 1.561 23 14.4 19:55 ( 82, -8) 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 15.6 mag (Sept. 15, ATLAS Chile). It will brighten rapidly after this. In the Northern Hemisphere, it will never be observable after this. In the Southern Hemisphere, it will be unobservable in December. But it will be observable again in January. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Oct. 19 14 30.18 -45 54.5 2.756 2.062 37 14.3 19:47 ( 43, 14) Oct. 26 14 41.96 -45 7.8 2.690 1.944 33 14.0 19:55 ( 41, 10) 29P/Schwassmann-Wachmann 1 Now it is 14.6 mag (Sept. 29, Toshiyuki Takahashi). 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) Oct. 19 9 58.19 11 9.6 6.709 6.238 57 14.1 3:43 (247, 12) Oct. 26 10 1.47 10 46.5 6.610 6.240 64 14.1 3:33 (245, 15) 333P/LINEAR It is expected to brighten very rapidly up to 10 mag from November to Decemebr. Now it is 18.9 mag (July 7, J. L. Virlichie, P. Traverse, H. Roy). It brightens up to 9.5 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 unobservable in December. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Oct. 19 10 38.36 -0 38.5 1.737 1.250 45 15.5 3:43 (263, 12) Oct. 26 10 45.42 1 47.6 1.561 1.210 50 14.1 3:33 (259, 12) C/2021 G2 ( ATLAS ) Now it is 14.1 mag (Aug. 29, Chris Wyatt). It stays 14 mag for a while. Now it is not observable. It will appear in November in the Northern Hemisphere, or in December in the Southern Hemisphere. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Oct. 19 13 48.61 -19 1.2 5.971 4.992 9 14.4 19:47 ( 58,-10) Oct. 26 13 55.95 -19 5.5 5.981 4.995 6 14.4 3:33 (304,-12) 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 14.4 mag (Oct. 17, Ken-ichi Kadota). 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 February. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Oct. 19 22 36.12 -5 29.1 3.823 4.558 132 14.5 20:43 (180, 60) Oct. 26 22 35.61 -5 30.3 3.874 4.526 125 14.5 20:15 (180, 60) C/2022 QE78 ( ATLAS ) Now it is 15.3 mag (Oct. 7, Andrew Pearce). 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) Oct. 19 6 45.81 2 57.0 5.676 5.976 102 14.6 3:43 (208, 48) Oct. 26 6 46.62 2 55.2 5.557 5.956 109 14.6 3:33 (202, 50) 487P/2024 N5 ( Siding Spring ) First return of a new periodic comet which brightened up to 16 mag in 2012. Now it is 15.6 mag (Oct. 9, ATLAS-MLO, Mauna Loa). It will turn to fade out rapidly after the peak. 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 after this, and it will be unobservable in December. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Oct. 19 4 46.11 22 21.8 0.985 1.815 132 14.8 2:56 (180, 33) Oct. 26 4 41.87 26 43.4 0.938 1.816 139 14.6 2:25 (180, 28) C/2024 M1 ( ATLAS ) It is expected to brighten up to 13.5 mag, and it will be observable in good condition in winter. Now it is 16.0 mag (Oct. 9, ATLAS South Africa). It brightens up to 13.5 mag, but it will turn to fade out rapidly after that. 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) Oct. 19 6 52.85 -21 40.5 1.340 1.752 96 15.1 3:43 (238, 68) Oct. 26 6 48.94 -19 40.5 1.221 1.733 102 14.8 3:33 (224, 70) C/2023 Q1 ( PanSTARRS ) Now it is 16.3 mag (Oct. 2, D. Buczynski). 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. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Oct. 19 7 1.85 64 31.3 2.213 2.617 102 15.4 3:43 (190,-11) Oct. 26 7 19.73 66 6.1 2.155 2.605 105 15.3 3:33 (189,-12) C/2020 V2 ( ZTF ) It was observed at 9-10 mag for a long time in 2023. Now it is 15.2 mag (Oct. 2, ATLAS South Africa). Fading slowly. 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) Oct. 19 21 6.67 -68 32.4 5.724 5.789 88 15.4 19:47 ( 5, 56) Oct. 26 21 0.45 -67 47.1 5.866 5.845 83 15.5 19:55 ( 12, 56) C/2021 S3 ( PanSTARRS ) It brightened up to 9.6 mag from February to March (Feb. 25, Thomas Lehmann). Now it is 14.2 mag (Oct. 1, Ken-ichi Kadota). Fading gradually. In the Northern Hemisphere, it stays observable in good condition. In the Southern Hemisphere, it will be unobservable in November. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Oct. 19 19 50.83 41 39.6 3.184 3.488 99 15.4 19:47 (160, 9) Oct. 26 19 58.21 40 3.9 3.296 3.560 97 15.6 19:55 (154, 9) C/2017 K2 ( PanSTARRS ) It brightened up to 8 mag from 2022 summer to 2023 spring. Now it is 15.7 mag (Oct. 9, 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) Oct. 19 6 23.90 18 37.3 6.655 7.058 110 15.5 3:43 (195, 35) Oct. 26 6 21.87 18 50.7 6.600 7.114 117 15.5 3:33 (189, 36) C/2014 UN271 ( Bernardinelli-Bernstein ) Very large comet. It is expected to brighten up to 13 mag in 2031. Now it is 15.2 mag (Sept. 26, Martin Masek). 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) Oct. 19 4 15.67 -69 37.2 15.708 15.839 95 15.5 2:24 ( 0, 55) Oct. 26 4 12.84 -69 57.2 15.705 15.815 94 15.5 1:54 ( 0, 55) C/2022 L2 ( ATLAS ) Now it is 15.6 mag (July 24, Thomas Lehmann). It stays 16 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) Oct. 19 9 52.74 -32 21.5 3.974 3.513 55 15.7 3:43 (287, 37) Oct. 26 9 50.09 -33 40.4 3.935 3.557 60 15.7 3:33 (287, 41) 130P/McNaught-Hughes Now it is 15.5 mag (Oct. 7, A. Pearce). It will fade out rapidly after this. It will be fainter than 18 mag in January. It stays observable in good condition. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Oct. 19 2 20.62 7 7.0 1.392 2.376 168 15.7 0:31 (180, 48) Oct. 26 2 13.98 6 52.4 1.419 2.409 173 15.9 23:52 (180, 48) 30P/Reinmuth 1 Now it is 16.5 mag (Apr. 3, Taras Prystavski). It stays 16 mag for a while. In the Northern Hemisphere, it will be getting higher gradually. In the Southern Hemisphere, it is not observable now, but it will appear in November. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Oct. 19 11 40.92 6 3.5 2.660 1.900 32 15.7 3:43 (266, -5) Oct. 26 11 56.80 4 40.6 2.640 1.920 35 15.8 3:33 (267, -4) P/2023 S1 Now it is 15.9 mag (Sept. 30, Ken-ichi Kadota). Brightening slowly. In the Northern Hemisphere, it stays observable in good condition. It locates somewhat low in the Southern Hemisphere. But it will become high in winter. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Oct. 19 8 37.99 23 39.3 2.718 2.728 80 15.9 3:43 (224, 17) Oct. 26 8 46.37 23 3.9 2.618 2.717 84 15.8 3:33 (222, 19) 472P/2023 RL75 ( NEAT-LINEAR ) Now it is 15.8 mag (Oct. 9, 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) Oct. 19 6 37.81 12 45.4 3.044 3.455 106 15.8 3:43 (201, 40) Oct. 26 6 40.19 12 14.7 2.964 3.465 112 15.8 3:33 (196, 41) C/2024 A1 ( ATLAS ) Now it is 16.9 mag (Oct. 9, ATLAS South Africa). Brightening slowly. It locates somewhat low in the Northern Hemisphere. But it will become high in winter. In the Southern Hemisphere, it stays observable in good condition. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Oct. 19 8 16.33 -26 31.9 4.511 4.387 76 16.2 3:43 (268, 54) Oct. 26 8 16.82 -26 41.3 4.399 4.360 81 16.1 3:33 (265, 58) C/2022 R6 ( PanSTARRS ) Now it is 16.5 mag (Oct. 9, Ken-ichi Kadota). 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) Oct. 19 7 8.90 -28 25.6 6.799 6.889 91 16.2 3:43 (259, 69) Oct. 26 7 9.90 -28 53.9 6.715 6.875 95 16.2 3:33 (256, 72) 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 will be getting higher gradually. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Oct. 19 12 3.70 -49 22.5 9.595 8.903 43 16.3 3:43 (316, 21) Oct. 26 12 8.36 -49 55.3 9.634 8.947 44 16.3 3:33 (316, 24) C/2023 H5 ( Lemmon ) It will be observable at 15 mag for a long time in 2025 in the Northern Hemisphere. Brightening slowly. In the Northern Hemisphere, it will be getting higher gradually. In the Southern Hemisphere, it is not observable now, but it will appear in December. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Oct. 19 11 37.04 24 29.7 5.444 4.791 44 16.4 3:43 (250,-14) Oct. 26 11 42.58 25 6.6 5.335 4.767 50 16.3 3:33 (248,-12) C/2019 U5 ( PanSTARRS ) Now it is 15.9 mag (Oct. 10, ATLAS Chile). 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) Oct. 19 7 49.93 -43 59.9 6.146 6.062 80 16.5 3:43 (299, 62) Oct. 26 7 46.36 -45 8.7 6.130 6.106 83 16.5 3:33 (304, 66) C/2023 T3 ( Fuls ) Brightening slowly. It locates somewhat 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) Oct. 19 11 18.33 -19 4.6 4.438 3.659 34 16.6 3:43 (284, 14) Oct. 26 11 27.78 -20 12.0 4.379 3.644 37 16.5 3:33 (284, 16) 43P/Wolf-Harrington Now it is 16.5 mag (Oct. 9, 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) Oct. 19 2 8.85 20 23.1 2.168 3.146 166 16.6 0:20 (180, 34) Oct. 26 2 4.03 19 45.1 2.131 3.119 172 16.6 23:43 (180, 35) 154P/Brewington It brightened up to 12.0 mag in June (June 13, Ken-ichi Kadota). Now it is 16.1 mag (Oct. 1, Toshiyuki Takahashi). Fading slowly. 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) Oct. 19 9 6.71 33 11.4 2.066 2.082 77 16.6 3:43 (222, 6) Oct. 26 9 16.95 32 45.0 2.035 2.129 81 16.7 3:33 (222, 7) 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 16.8 mag (Oct. 4, 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) Oct. 19 6 58.24 -39 54.4 5.620 5.719 90 16.6 3:43 (293, 73) Oct. 26 6 55.71 -40 23.4 5.609 5.767 94 16.6 3:33 (298, 76) 305P/Skiff It will brighten up to 16 mag and will be observable in good condition in winter. Now it is 17.3 mag (Oct. 9, 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) Oct. 19 21 48.66 9 57.6 0.647 1.461 124 16.9 19:56 (180, 45) Oct. 26 22 1.17 8 58.6 0.654 1.443 120 16.7 19:55 (175, 46) C/2022 U3 ( Bok ) Now it is 18.9 mag (Sept. 30, Yasukazu Ikari). 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) Oct. 19 8 5.30 9 12.3 4.866 4.870 84 16.7 3:43 (227, 33) Oct. 26 8 7.85 8 19.1 4.768 4.877 90 16.7 3:33 (224, 36) C/2023 R1 ( PanSTARRS ) Now it is 16.8 mag (Oct. 9, ATLAS-MLO, Mauna Loa). It stays 17 mag for a while. In the Northern Hemisphere, it stays observable in good condition. In the Southern Hemisphere, it will be unobservable in December. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Oct. 19 22 40.02 26 57.8 5.129 5.879 135 16.7 20:46 (180, 28) Oct. 26 22 33.75 25 56.0 5.154 5.835 129 16.7 20:13 (180, 29) 253P/PanSTARRS Now it is 16.0 mag (Oct. 9, ATLAS South Africa). Fading gradually. It will be fainter than 18 mag in December. It stays observable in good condition. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Oct. 19 0 41.74 -3 24.2 1.059 2.027 161 16.7 22:48 (180, 58) Oct. 26 0 39.32 -3 46.2 1.087 2.027 153 16.8 22:18 (180, 59) 146P/Shoemaker-LINEAR It brightened up to 14.4 mag in summer (Aug. 17, Hiroshi Abe). Now it is 16.9 mag (Sept. 30, Hiroshi Abe). It will fade out rapidly after this. It will be fainter than 18 mag in December. 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) Oct. 19 6 18.87 28 3.6 1.004 1.653 111 16.7 3:43 (191, 26) Oct. 26 6 22.71 30 45.4 0.986 1.694 117 16.9 3:33 (188, 24) C/2019 E3 ( ATLAS ) Very far object. Now it is 17.0 mag (Oct. 5, 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) Oct. 19 1 48.56 -69 35.8 10.245 10.471 100 16.8 23:54 ( 0, 56) Oct. 26 1 39.13 -69 23.7 10.291 10.477 98 16.8 23:17 ( 0, 56) 299P/Catalina-PanSTARRS It brightened very rapidly in outburst in late May, and brightened up to 14.9 mag (May 19, Taras Prystavski). Now it is 17.2 mag (Oct. 3, ATLAS Chile). It stays 17 mag for a while. It will be unobservable in December. But it will be observable again in February. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Oct. 19 16 55.74 -23 5.2 3.833 3.274 49 16.9 19:47 ( 80, 28) Oct. 26 17 5.84 -23 7.1 3.913 3.284 44 17.0 19:55 ( 77, 23) 48P/Johnson Now it is 16.9 mag (Oct. 11, ATLAS Chile). Brightening gradually. It will be unobservable in December. It will brighten up to 14.5 mag in 2025 spring. But the condition is bad. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Oct. 19 17 0.17 -20 13.0 2.764 2.261 50 17.1 19:47 ( 84, 28) Oct. 26 17 13.85 -20 57.0 2.801 2.237 46 16.9 19:55 ( 80, 24) 190P/Mueller Now it is 17.5 mag (Sept. 23, A. Diepvens). Fading slowly. It will be fainter than 18 mag in February. It stays observable in good condition. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Oct. 19 22 37.40 -7 11.6 1.295 2.100 132 17.0 20:45 (180, 62) Oct. 26 22 39.37 -6 53.7 1.338 2.084 126 17.0 20:19 (180, 62) C/2022 U1 ( Leonard ) Now it is 16.5 mag (Oct. 1, A. Diepvens). It stays 18 mag for a while. In the Northern Hemisphere, it will be getting lower gradually. But it will be getting higher again after January. In the Southern Hemisphere, it will be unobservable in November. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Oct. 19 19 6.02 26 23.4 4.468 4.542 87 17.1 19:47 (144, 19) Oct. 26 19 5.22 24 37.3 4.585 4.565 82 17.2 19:55 (136, 15) P/2010 A3 ( 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. But actually, it is fainter than this ephemeris. Now it is 19.3 mag (Oct. 8, John Maikner). Brightening gradually. It stays observable in good condition. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Oct. 19 3 2.23 4 38.3 1.301 2.255 157 17.4 1:13 (180, 50) Oct. 26 2 57.29 4 51.6 1.232 2.206 164 17.1 0:40 (180, 50) 49P/Arend-Rigaux It will brighten up to 14 mag in 2025 spring. Now it is 17.3 mag (Oct. 13, Ken-ichi Kadota). Brightening 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) Oct. 19 23 43.04 -30 53.6 1.491 2.273 131 17.1 21:50 (180, 86) Oct. 26 23 38.68 -30 56.6 1.504 2.225 124 17.2 21:18 (180, 86) 242P/Spahr Now it is 17.6 mag (Oct. 9, 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) Oct. 19 4 20.31 -12 10.8 3.231 3.983 133 17.2 2:30 (180, 67) Oct. 26 4 18.25 -13 12.9 3.189 3.981 137 17.2 2:01 (180, 68) C/2023 TD22 ( Lemmon ) Brightened rapidly. Now it is 16.2 mag (Sept. 28, A. Diepvens). Fading slowly. It will be fainter than 18 mag in November. It will be getting lower gradually. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Oct. 19 19 47.08 -13 38.3 2.158 2.384 90 17.2 19:47 (123, 57) Oct. 26 19 38.70 -14 13.1 2.334 2.396 81 17.4 19:55 (111, 49) C/2019 T4 ( ATLAS ) It brightened up to 11.1 mag in early 2022 (Mar. 31, 2022, F. Kugel, J.-G. Bosch, J. Nicolas). Now it is 16.7 mag (Oct. 9, ATLAS-MLO, Mauna Loa). It stays 18 mag for a while. 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 be unobservable soon. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Oct. 19 17 29.37 25 42.7 8.246 7.912 67 17.3 19:47 (127, 5) Oct. 26 17 32.98 25 18.3 8.343 7.953 63 17.3 19:55 (121, 0) 302P/Lemmon-PanSTARRS Now it is 17.0 mag (Oct. 4, ATLAS South Africa). It stays 18 mag for a while. It will be unobservable in January. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Oct. 19 19 16.53 -22 35.7 3.343 3.350 81 17.4 19:47 (102, 57) Oct. 26 19 23.26 -22 30.1 3.435 3.344 76 17.4 19:55 ( 97, 51) C/2024 J2 ( Wierzchos ) Now it is 17.5 mag (Oct. 9, D. Buczynski). Brightening slowly. It locates somewhat low in the Northern Hemisphere. In the Southern Hemisphere, it is not observable now. It will brighten up to 15.5 mag from winter to spring. But it is not observable around the high light. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Oct. 19 15 31.69 38 19.0 3.028 2.594 55 17.5 19:47 (122,-22) Oct. 26 15 47.70 37 48.6 2.956 2.537 55 17.4 19:55 (120,-25) 492P/2024 O3 ( LINEAR ) First return of a new periodic comet which brightened up to 15 mag in 2010. Now it is 17.4 mag (Oct. 13, Ken-ichi Kadota). 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) Oct. 19 8 49.17 30 1.3 1.950 2.021 79 17.5 3:43 (222, 10) Oct. 26 9 1.48 29 44.0 1.913 2.056 83 17.4 3:33 (221, 11) 338P/McNaught Now it is 17.2 mag (Oct. 9, ATLAS-MLO, Mauna Loa). Fading gradually. It will be fainter than 18 mag in November. 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) Oct. 19 2 25.20 36 17.3 1.432 2.355 151 17.4 0:36 (180, 19) Oct. 26 2 16.23 37 20.1 1.429 2.367 154 17.5 23:55 (180, 17) C/2021 S4 ( Tsuchinshan ) Now it is 17.6 mag (Oct. 13, Ken-ichi Kadota). 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) Oct. 19 7 38.96 39 36.0 6.780 6.949 95 17.5 3:43 (204, 10) Oct. 26 7 40.90 39 48.5 6.688 6.962 101 17.5 3:33 (201, 11) 89P/Russell 2 Now it is 17.0 mag (Oct. 10, ATLAS Chile). It will fade out rapidly after this. It will be fainter than 18 mag in November. It stays observable in good condition. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Oct. 19 23 10.14 -18 38.5 1.865 2.657 134 17.5 21:17 (180, 73) Oct. 26 23 9.19 -17 50.6 1.956 2.682 127 17.7 20:49 (180, 73) C/2024 J3 ( ATLAS ) Now it is 17.5 mag (Oct. 2, ATLAS Chile). It stays 17 mag for a while. It will be unobservable in December. But it will be observable again in January in the Southern Hemisphere, or in February in the Northern Hemisphere. It is expected to brighten up to 13 mag in 2026, and it will be observable in excellent condition in the Northern Hemisphere. In the Southern Hemisphere, it locates very low at the high light. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Oct. 19 18 25.23 -35 11.4 7.608 7.327 69 17.6 19:47 ( 75, 51) Oct. 26 18 27.23 -34 40.3 7.672 7.284 63 17.5 19:55 ( 73, 44) (3200) Phaethon Parent asteroid of Geminids meteor shower. Now it is 18.5 mag (Sept. 12, ATLAS-HKO, Haleakala). Brightening slowly. 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) Oct. 19 5 19.40 38 32.7 1.449 2.156 122 17.9 3:30 (180, 16) Oct. 26 5 11.02 39 3.7 1.334 2.120 130 17.6 2:54 (180, 16) 117P/Helin-Roman-Alu 1 Now it is 17.0 mag (Sept. 14, Ken-ichi Kadota). 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) Oct. 19 3 28.78 16 46.9 3.591 4.492 151 17.7 1:39 (180, 38) Oct. 26 3 24.74 16 38.5 3.560 4.505 159 17.7 1:08 (180, 38) 50P/Arend Now it is 18.5 mag (Oct. 10, D. Buczynski). 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) Oct. 19 9 26.26 32 58.8 2.457 2.369 73 17.7 3:43 (226, 3) Oct. 26 9 36.58 32 33.0 2.410 2.402 77 17.7 3:33 (225, 4) (308607) 2005 WY3 Peculiar asteroid moving along a cometary orbit. 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) Oct. 19 4 3.77 -5 53.7 2.212 3.042 139 17.9 2:14 (180, 61) Oct. 26 4 1.41 -7 28.4 2.128 2.992 144 17.7 1:44 (180, 62) 328P/LONEOS-Tucker Now it is 17.8 mag (Oct. 10, Yasukazu Ikari). It will fade out rapidly after this. 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) Oct. 19 4 9.70 48 59.8 1.239 2.024 129 17.7 2:20 (180, 6) Oct. 26 4 6.59 50 10.8 1.226 2.049 134 17.9 1:50 (180, 5) 276P/Vorobjov Now it is 17.3 mag (Oct. 4, Mt. Lemmon Survey). 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) Oct. 19 3 7.45 13 30.6 2.969 3.906 157 17.8 1:18 (180, 41) Oct. 26 3 4.13 12 53.2 2.936 3.904 164 17.8 0:47 (180, 42) C/2022 S4 ( Lemmon ) It has started fading before the perihelion passage. Now it is 17.0 mag (Aug. 11, Thomas Lehmann). It stays 18 mag for a while. In the Northern Hemisphere, it will never be observable after this. It locates somewhat low in the Southern Hemisphere. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Oct. 19 13 8.82 -62 7.3 3.419 2.920 52 17.8 3:43 (333, 21) Oct. 26 13 29.04 -61 28.5 3.492 2.944 49 17.9 3:33 (333, 20) (343158) Marsyas Peculiar asteroid moving along a cometary orbit. It will approach to Sun down to 0.49 a.u. on Nov. 29. It brightens up to 17 mag, but it will turn to fade out rapidly after that. It locates somewhat low in the Northern Hemisphere. In the Southern Hemisphere, it will be unobservable in December. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Oct. 19 10 4.46 2 50.8 1.113 0.964 54 18.2 3:43 (254, 16) Oct. 26 10 24.56 -3 37.3 0.873 0.861 54 17.8 3:33 (260, 20) C/2021 X1 ( Maury-Attard ) It brightened up to 14 mag in early 2023 and 2023 autumn. Now it is 17.9 mag (Sept. 6, Ken-ichi Kadota). Fading slowly. It will be fainter than 18 mag soon. 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) Oct. 19 20 15.31 15 14.6 5.321 5.615 102 17.9 19:47 (155, 36) Oct. 26 20 13.21 14 33.3 5.475 5.661 95 18.0 19:55 (144, 33) 192P/Shoemaker-Levy 1 It brightened up to 15.9 mag in summer (July 8, Hidetaka Sato). Now it is 17.8 mag (Sept. 12, ATLAS-HKO, Haleakala). It will fade out rapidly after this. 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) Oct. 19 7 28.04 37 21.6 1.912 2.268 97 17.9 3:43 (203, 13) Oct. 26 7 33.12 38 47.1 1.885 2.325 103 18.1 3:33 (200, 13)