Weekly Information about Bright Comets (2024 Oct. 12: South)

Japanese version Home page	Updated on October 13, 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 ) Now it is -1.5 mag (Oct. 11, Virgilio Gonano). It had a long tail of 10-20 degrees in early October. It will fade out rapidly after this. It will be unobservable in January in the Northern Hemisphere, or in November in the Southern Hemisphere. J. N. Marcus predicted the comet would brighten up to -4 mag at best on Oct. 9 due to the forward scattering. Hirohisa Sato reported the comet brightend up to between -2 and -3 mag in the SOHO LASCO images and STEREO spacecraft images. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Oct. 12 13 52.89 -1 28.2 0.473 0.545 12 1.1 19:08 ( 85, -5) Oct. 19 16 10.31 2 0.9 0.561 0.675 40 3.5 19:15 (102, 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. However, the comet seems to be disintegrated based on the recent images. Now it is 11.9 mag (Oct. 9, Osamu Miyazaki). It brightens up to 2 mag, but it will turn to fade out rapidly after that. 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. 12 10 29.27 -16 39.6 1.048 0.704 40 10.9 3:54 (277, 19) Oct. 19 11 41.32 -18 43.1 0.914 0.484 28 9.3 3:43 (286, 10) 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 9.0 mag (Sept. 27, Hiroshi Abe). 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. 12 15 4.56 0 51.5 2.707 1.907 29 10.3 19:39 ( 91, 0) Oct. 19 15 19.45 -1 26.1 2.813 1.980 27 10.6 19:47 ( 86, -3) C/2022 E2 ( ATLAS ) Now it is 12.6 mag (Sept. 30, Hiroshi Abe). 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. 12 7 29.28 54 4.2 3.484 3.675 93 12.0 3:54 (199, -4) Oct. 19 7 22.06 56 20.7 3.371 3.680 100 11.9 3:43 (195, -4) 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. 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. 12 14 12.26 -47 31.2 3.426 2.771 42 12.0 19:39 ( 44, 18) Oct. 19 14 27.71 -47 31.1 3.555 2.852 39 12.3 19:47 ( 42, 15) 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. 12 17 45.34 -34 31.4 2.580 2.402 68 12.9 19:39 ( 76, 50) Oct. 19 17 58.18 -32 29.2 2.649 2.390 64 12.9 19:47 ( 77, 45) C/2024 B1 ( Lemmon ) It became much brighter than expected. Now it is 13.8 mag (Sept. 8, Michael Jager). Fading gradually. It stays extremely 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. 12 12 43.91 47 15.3 1.990 1.635 54 13.4 3:54 (234,-39) Oct. 19 13 21.04 45 9.4 1.991 1.641 55 13.4 3:43 (238,-42) C/2023 R2 ( PanSTARRS ) It will fade out rapidly after this. In the Northern Hemisphere, it will be unobservable in 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) Oct. 12 14 43.10 -1 10.7 2.237 1.387 24 13.7 19:39 ( 86, -3) Oct. 19 15 7.00 -1 43.4 2.325 1.474 24 14.0 19:47 ( 84, -5) 37P/Forbes Now it is 13.9 mag (Oct. 3, ATLAS South Africa). Fading gradually. It will be unobservable in January in the Southern Hemisphere, or in February in the Northern Hemisphere. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Oct. 12 16 51.25 -26 9.8 1.951 1.618 55 13.9 19:39 ( 81, 36) Oct. 19 17 13.76 -26 7.6 1.992 1.620 53 13.9 19:47 ( 80, 33) 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. 12 9 54.60 11 33.9 6.801 6.237 52 14.1 3:54 (249, 10) Oct. 19 9 58.19 11 9.6 6.709 6.238 57 14.1 3:43 (247, 12) 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. 12 14 18.95 -46 44.0 2.811 2.176 42 14.6 19:39 ( 45, 18) Oct. 19 14 30.18 -45 54.5 2.756 2.062 37 14.3 19:47 ( 43, 14) 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. 12 13 41.27 -18 57.1 5.952 4.989 13 14.4 19:39 ( 63, -5) Oct. 19 13 48.61 -19 1.2 5.971 4.992 9 14.4 19:47 ( 58,-10) 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 14.3 mag (Sept. 30, Masayoshi Yoshimi). 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. 12 22 37.25 -5 24.8 3.781 4.590 139 14.5 21:12 (180, 60) Oct. 19 22 36.12 -5 29.1 3.823 4.558 132 14.5 20:43 (180, 60) C/2022 QE78 ( ATLAS ) Now it is 15.2 mag (Sept. 30, Hiroshi Abe). 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. 12 6 44.47 2 60.0 5.799 5.996 96 14.7 3:54 (213, 47) Oct. 19 6 45.81 2 57.0 5.676 5.976 102 14.6 3:43 (208, 48) 487P/2024 N5 ( Siding Spring ) First return of a new periodic comet which brightened up to 16 mag in 2012. It is expected to brighten rapidly up to 14.5 mag in autumn. Now it is 15.6 mag (Oct. 9, ATLAS-MLO, Mauna Loa). Fading gradually. 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. 12 4 47.65 18 22.4 1.042 1.817 125 15.0 3:25 (180, 37) Oct. 19 4 46.11 22 21.8 0.985 1.815 132 14.8 2:56 (180, 33) 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). Brightening slowly. 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. 12 6 54.24 -23 14.5 1.458 1.775 90 15.3 3:54 (248, 66) Oct. 19 6 52.85 -21 40.5 1.340 1.752 96 15.1 3:43 (238, 68) C/2021 S3 ( PanSTARRS ) It brightened up to 9.6 mag from February to March (Feb. 25, Thomas Lehmann). Now it is 13.7 mag (Sept. 27, Hiroshi Abe). 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. 12 19 43.93 43 21.8 3.078 3.416 101 15.3 19:39 (165, 10) Oct. 19 19 50.83 41 39.6 3.184 3.488 99 15.4 19:47 (160, 9) C/2020 V2 ( ZTF ) It was observed at 9-10 mag for a long time in 2023. Now it is 15.2 mag (Sept. 24, 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. 12 21 15.17 -69 15.1 5.583 5.733 93 15.3 19:50 ( 0, 56) Oct. 19 21 6.67 -68 32.4 5.724 5.789 88 15.4 19:47 ( 5, 56) 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. 12 6 43.84 62 52.4 2.276 2.631 99 15.5 3:54 (190, -9) Oct. 19 7 1.85 64 31.3 2.213 2.617 102 15.4 3:43 (190,-11) 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. 12 6 25.40 18 24.5 6.715 7.003 102 15.4 3:54 (200, 34) Oct. 19 6 23.90 18 37.3 6.655 7.058 110 15.5 3:43 (195, 35) 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). Brightening rapidly. In the Northern Hemisphere, it will be getting higher gradually. 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. 12 10 31.96 -2 36.4 1.900 1.296 39 16.9 3:54 (266, 11) Oct. 19 10 38.36 -0 38.5 1.737 1.250 45 15.5 3:43 (263, 12) 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. 12 4 18.02 -69 14.7 15.713 15.863 96 15.5 2:54 ( 0, 56) Oct. 19 4 15.67 -69 37.2 15.708 15.839 95 15.5 2:24 ( 0, 55) 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. 12 2 27.01 7 23.4 1.378 2.344 160 15.6 1:05 (180, 47) Oct. 19 2 20.62 7 7.0 1.392 2.376 168 15.7 0:31 (180, 48) 30P/Reinmuth 1 Now it is 16.5 mag (Apr. 3, Taras Prystavski). It stays 16 mag for a while. 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 November. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Oct. 12 11 24.67 7 27.7 2.679 1.882 30 15.7 3:54 (265, -6) Oct. 19 11 40.92 6 3.5 2.660 1.900 32 15.7 3:43 (266, -5) 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. 12 9 54.50 -31 5.7 4.006 3.469 51 15.7 3:54 (287, 33) Oct. 19 9 52.74 -32 21.5 3.974 3.513 55 15.7 3:43 (287, 37) 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. 12 6 34.53 13 16.1 3.127 3.446 100 15.9 3:54 (205, 38) Oct. 19 6 37.81 12 45.4 3.044 3.455 106 15.8 3:43 (201, 40) P/2023 S1 Now it is 15.6 mag (Sept. 25, ATLAS-HKO, Haleakala). 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. 12 8 28.97 24 14.9 2.818 2.739 75 16.0 3:54 (225, 15) Oct. 19 8 37.99 23 39.3 2.718 2.728 80 15.9 3:43 (224, 17) 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. 12 8 15.09 -26 22.2 4.619 4.415 72 16.3 3:54 (270, 51) Oct. 19 8 16.33 -26 31.9 4.511 4.387 76 16.2 3:43 (268, 54) C/2022 R6 ( PanSTARRS ) Now it is 16.6 mag (Oct. 9, 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) Oct. 12 7 7.40 -27 56.5 6.883 6.904 87 16.3 3:54 (261, 65) Oct. 19 7 8.90 -28 25.6 6.799 6.889 91 16.2 3:43 (259, 69) 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. 12 11 58.88 -48 51.8 9.548 8.859 44 16.3 3:54 (317, 20) Oct. 19 12 3.70 -49 22.5 9.595 8.903 43 16.3 3:43 (316, 21) 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. 12 11 31.43 23 58.0 5.545 4.816 39 16.5 3:54 (252,-16) Oct. 19 11 37.04 24 29.7 5.444 4.791 44 16.4 3:43 (250,-14) C/2019 U5 ( PanSTARRS ) Now it is 15.5 mag (Oct. 3, 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. 12 7 52.62 -42 50.5 6.162 6.018 77 16.4 3:54 (297, 59) Oct. 19 7 49.93 -43 59.9 6.146 6.062 80 16.5 3:43 (299, 62) 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. 12 6 12.74 25 27.3 1.025 1.615 105 16.5 3:54 (194, 28) Oct. 19 6 18.87 28 3.6 1.004 1.653 111 16.7 3:43 (191, 26) 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. 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. 12 8 55.11 33 41.0 2.094 2.036 72 16.5 3:54 (223, 4) Oct. 19 9 6.71 33 11.4 2.066 2.082 77 16.6 3:43 (222, 6) 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. 12 6 59.98 -39 23.4 5.632 5.670 87 16.6 3:54 (290, 69) Oct. 19 6 58.24 -39 54.4 5.620 5.719 90 16.6 3:43 (293, 73) 43P/Wolf-Harrington Now it is 16.8 mag (Oct. 4, 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) Oct. 12 2 13.28 20 55.3 2.219 3.173 159 16.8 0:51 (180, 34) Oct. 19 2 8.85 20 23.1 2.168 3.146 166 16.6 0:20 (180, 34) 253P/PanSTARRS Now it is 16.0 mag (Oct. 9, ATLAS South Africa). Fading gradually. 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. 12 0 44.91 -2 51.5 1.041 2.028 168 16.7 23:19 (180, 58) Oct. 19 0 41.74 -3 24.2 1.059 2.027 161 16.7 22:48 (180, 58) 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. 12 1 58.15 -69 41.3 10.203 10.464 102 16.7 0:36 ( 0, 55) Oct. 19 1 48.56 -69 35.8 10.245 10.471 100 16.8 23:54 ( 0, 56) 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. 12 22 46.95 27 57.2 5.119 5.923 140 16.8 21:21 (180, 27) Oct. 19 22 40.02 26 57.8 5.129 5.879 135 16.7 20:46 (180, 28) 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. 12 8 2.18 10 5.2 4.963 4.863 78 16.8 3:54 (229, 30) Oct. 19 8 5.30 9 12.3 4.866 4.870 84 16.7 3:43 (227, 33) 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 November. But it will be observable again in February in the Southern Hemisphere. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Oct. 12 16 45.90 -23 2.0 3.748 3.265 54 16.8 19:39 ( 84, 33) Oct. 19 16 55.74 -23 5.2 3.833 3.274 49 16.9 19:47 ( 80, 28) 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. 12 21 38.95 11 1.2 0.643 1.483 127 17.0 20:14 (180, 44) Oct. 19 21 48.78 9 58.6 0.646 1.461 124 16.9 19:57 (180, 45) 190P/Mueller Now it is 17.5 mag (Sept. 23, A. Diepvens). Fading slowly. 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. 12 22 36.96 -7 21.4 1.258 2.117 139 17.0 21:11 (180, 62) Oct. 19 22 37.40 -7 11.6 1.295 2.100 132 17.0 20:45 (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 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. 12 19 7.73 28 17.4 4.356 4.521 93 17.0 19:39 (153, 21) Oct. 19 19 6.02 26 23.4 4.468 4.542 87 17.1 19:47 (144, 19) 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. 12 19 58.45 -12 51.7 1.984 2.373 100 17.0 19:39 (142, 63) Oct. 19 19 47.08 -13 38.3 2.158 2.384 90 17.2 19:47 (123, 57) 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. 12 16 47.15 -19 24.8 2.723 2.285 54 17.2 19:39 ( 88, 32) Oct. 19 17 0.17 -20 13.0 2.764 2.261 50 17.1 19:47 ( 84, 28) 49P/Arend-Rigaux It will brighten up to 14 mag in 2025 spring. Now it is 17.1 mag (Sept. 23, Taras Prystavski). 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. 12 23 48.55 -30 31.6 1.485 2.321 137 17.1 22:22 (180, 85) Oct. 19 23 43.04 -30 53.6 1.491 2.273 131 17.1 21:50 (180, 86) 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 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. 12 17 26.03 26 9.6 8.145 7.871 70 17.2 19:39 (132, 10) Oct. 19 17 29.37 25 42.7 8.246 7.912 67 17.3 19:47 (127, 5) 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. 12 4 21.63 -11 5.5 3.284 3.985 128 17.3 2:59 (180, 66) Oct. 19 4 20.31 -12 10.8 3.231 3.983 133 17.2 2:30 (180, 67) 89P/Russell 2 Now it is 16.7 mag (Sept. 22, ATLAS South Africa). 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. 12 23 12.29 -19 20.0 1.783 2.632 140 17.3 21:47 (180, 74) Oct. 19 23 10.14 -18 38.5 1.865 2.657 134 17.5 21:17 (180, 73) 302P/Lemmon-PanSTARRS Now it is 17.0 mag (Oct. 4, ATLAS South Africa). It stays 18 mag for a while. 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. 12 19 10.48 -22 38.8 3.250 3.356 87 17.3 19:39 (109, 62) Oct. 19 19 16.53 -22 35.7 3.343 3.350 81 17.4 19:47 (102, 57) 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. 12 3 5.83 4 29.5 1.381 2.305 150 17.6 1:44 (180, 50) Oct. 19 3 2.23 4 38.3 1.301 2.255 157 17.4 1:13 (180, 50) 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. 12 2 33.25 34 59.3 1.446 2.343 146 17.4 1:12 (180, 20) Oct. 19 2 25.20 36 17.3 1.432 2.355 151 17.4 0:36 (180, 19) 492P/2024 O3 ( LINEAR ) First return of a new periodic comet which brightened up to 15 mag in 2010. Now it is 17.8 mag (Oct. 9, ATLAS-MLO, Mauna Loa). 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. 12 8 35.66 30 20.1 1.987 1.988 75 17.5 3:54 (222, 10) Oct. 19 8 49.17 30 1.3 1.950 2.021 79 17.5 3:43 (222, 10) C/2021 S4 ( Tsuchinshan ) Now it is 18.2 mag (Oct. 2, ATLAS-MLO, Mauna Loa). 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. 12 7 36.47 39 24.7 6.874 6.937 89 17.5 3:54 (207, 9) Oct. 19 7 38.96 39 36.0 6.780 6.949 95 17.5 3:43 (204, 10) 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. 12 15 16.82 38 50.7 3.098 2.652 54 17.7 19:39 (125,-19) Oct. 19 15 31.69 38 19.0 3.028 2.594 55 17.5 19:47 (122,-22) 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 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. 12 4 10.45 47 34.2 1.259 2.001 124 17.5 2:49 (180, 7) Oct. 19 4 9.70 48 59.8 1.239 2.024 129 17.7 2:20 (180, 6) 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. 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. 12 18 23.68 -35 43.2 7.540 7.370 76 17.6 19:39 ( 77, 58) Oct. 19 18 25.23 -35 11.4 7.608 7.327 69 17.6 19:47 ( 75, 51) 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. 12 9 14.93 33 27.5 2.501 2.336 68 17.7 3:54 (226, 2) Oct. 19 9 26.26 32 58.8 2.457 2.369 73 17.7 3:43 (226, 3) 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. 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. 12 7 21.37 36 0.2 1.940 2.211 91 17.7 3:54 (206, 13) Oct. 19 7 28.04 37 21.6 1.912 2.268 97 17.9 3:43 (203, 13) 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. 12 3 32.29 16 53.8 3.635 4.480 143 17.7 2:10 (180, 38) Oct. 19 3 28.78 16 46.9 3.591 4.492 151 17.7 1:39 (180, 38) 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. 12 12 46.52 -62 46.7 3.343 2.898 55 17.7 3:54 (333, 22) Oct. 19 13 8.82 -62 7.3 3.419 2.920 52 17.8 3:43 (333, 21) 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. 12 20 18.20 15 59.4 5.170 5.568 108 17.8 19:39 (166, 38) Oct. 19 20 15.31 15 14.6 5.321 5.615 102 17.9 19:47 (155, 36) 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. 12 3 10.26 14 6.1 3.014 3.908 149 17.8 1:48 (180, 41) Oct. 19 3 7.45 13 30.6 2.969 3.906 157 17.8 1:18 (180, 41) (3200) Phaethon Parent asteroid of Geminids meteor shower. 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. 12 5 24.43 37 59.1 1.571 2.190 115 18.1 3:54 (182, 17) Oct. 19 5 19.40 38 32.7 1.449 2.156 122 17.9 3:30 (180, 16) (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. 12 4 5.09 -4 21.0 2.308 3.092 134 18.0 2:43 (180, 59) Oct. 19 4 3.77 -5 53.7 2.212 3.042 139 17.9 2:14 (180, 61)