Weekly Information about Bright Comets (2025 Mar. 15: South)

Japanese version Home page	Updated on March 16, 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.

323P/SOHO It approached to Earth down to 0.2 a.u. in mid February, and it was observed at 20.4 mag (Feb. 8, Steward Observatory, Mt. Lemmon Station). It approached to Sun down to 0.04 a.u. on Mar. 14. It is appearing in the evening low sky. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Mar. 15 23 49.65 -0 43.5 1.045 0.074 3 9.4 19:43 ( 79,-16) Mar. 22 1 25.26 10 26.0 1.005 0.388 22 18.7 19:32 ( 99, -7) 21P/Giacobini-Zinner It is visible at 11 mag in the SWAN images (Jan. 27, Vladimir Bezugly). It will fade out rapidly after this. Now it is not observable. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Mar. 15 23 37.51 3 23.0 2.005 1.020 5 10.6 4:33 (281,-21) Mar. 22 0 7.98 4 9.3 2.002 1.010 3 10.6 19:32 ( 82,-19) 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. Now it is 8.5 mag (Feb. 23, Marco Goiato). Fading rapidly. In the Northern Hemisphere, it will never be observable after this. 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) Mar. 15 0 18.41 -41 40.3 2.231 1.608 40 10.8 19:43 ( 48, 13) Mar. 22 0 32.64 -42 20.4 2.321 1.736 43 11.2 19:32 ( 47, 13) C/2023 A3 ( Tsuchinshan-ATLAS ) It brightened up to -3 mag due to the forward scattering on Oct. 9 in the SOHO coronagraph images (Q.-c. Zhang, Charles S. Morris). It became a great comet of 0 mag on the ground. Now it is 11.9 mag (Mar. 9, Ken-ichi Kadota). Fading 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) Mar. 15 20 24.84 15 40.2 3.532 3.011 51 12.3 4:33 (243, 10) Mar. 22 20 25.79 16 51.6 3.542 3.102 56 12.4 4:40 (236, 15) 29P/Schwassmann-Wachmann 1 Now it is 12.6 mag (Mar. 3, Toru Yusa). It stays observable in good condition. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Mar. 15 9 42.78 10 24.8 5.386 6.267 150 13.6 22:10 (180, 45) Mar. 22 9 40.48 10 33.9 5.448 6.268 142 13.7 21:40 (180, 45) C/2021 G2 ( ATLAS ) Now it is 13.8 mag (Mar. 8, 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) Mar. 15 15 34.71 -14 0.9 4.624 5.185 119 14.0 4:05 (180, 69) Mar. 22 15 34.59 -13 11.4 4.545 5.200 126 13.9 3:37 (180, 68) C/2022 E2 ( ATLAS ) Now it is 13.7 mag (Feb. 28, Hiroshi Abe). It stays 14 mag for a while. It locates somewhat low in the Northern Hemisphere. But it will become high in summer. In the Southern Hemisphere, it is not observable now. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Mar. 15 1 28.31 48 41.0 4.476 4.009 56 14.0 19:43 (134,-24) Mar. 22 1 30.48 48 18.0 4.582 4.034 51 14.1 19:32 (133,-26) 13P/Olbers It returned for the first time in 68 years. It brightened up to 6.2 mag in early last summer (July 1, Virgilio Gonano). Now it is 14.6 mag (Feb. 8, Ken-ichi Kadota). 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) Mar. 15 18 40.19 -20 50.5 3.626 3.502 74 14.1 4:33 (258, 53) Mar. 22 18 43.25 -21 18.1 3.585 3.571 81 14.2 4:40 (252, 59) 49P/Arend-Rigaux Now it is 14.3 mag (Mar. 2, Roland Fichtl). Fading slowly. It locates somewhat low in the Northern Hemisphere. It stays extremely low in the Southern Hemisphere. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Mar. 15 2 53.56 5 41.0 1.903 1.462 49 14.5 19:43 (110, 16) Mar. 22 3 13.28 8 14.4 1.919 1.448 47 14.4 19:32 (112, 15) 48P/Johnson It stays 15 mag for a while. Now it is not observable. It will appear soon in the Southern Hemisphere, or in June in the Northern Hemisphere. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Mar. 15 22 50.62 -13 20.4 2.944 2.009 16 14.5 4:33 (288, -2) Mar. 22 23 7.06 -12 2.4 2.928 2.012 19 14.5 4:40 (284, 1) C/2022 N2 ( PanSTARRS ) It is expected to brighten up to 13 mag in autumn, and it will be observable in good condition. Now it is 14.9 mag (Feb. 4, A. Diepvens). It stays 14 mag for a while. Now it is not observable. It will appear in May. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Mar. 15 0 19.76 5 51.4 4.977 4.015 12 14.5 19:43 ( 87,-15) Mar. 22 0 28.23 6 48.6 4.979 3.997 8 14.5 19:32 ( 87,-17) C/2022 QE78 ( ATLAS ) Now it is 14.7 mag (Feb. 27, Ken-ichi Kadota). It stays 15 mag for a while. It will be getting lower gradually after this, and it will be unobservable in June. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Mar. 15 6 17.96 11 48.3 5.376 5.634 99 14.7 19:43 (161, 41) Mar. 22 6 19.77 12 26.8 5.472 5.622 93 14.7 19:32 (157, 40) P/2023 S1 Now it is 14.2 mag (Feb. 23, Thomas Lehmann). Fading slowly. It stays observable in good condition. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Mar. 15 8 32.80 17 34.7 1.852 2.622 131 14.7 21:00 (180, 38) Mar. 22 8 32.97 17 11.9 1.923 2.624 124 14.8 20:33 (180, 38) C/2024 L5 ( ATLAS ) Now it is 15.2 mag (Mar. 9, Ken-ichi Kadota). 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) Mar. 15 14 3.84 -29 42.4 2.677 3.433 132 14.8 2:35 (180, 85) Mar. 22 13 46.12 -28 37.6 2.587 3.434 142 14.8 1:50 (180, 84) C/2024 J2 ( Wierzchos ) Brightened rapidly. Now it is 14.6 mag (Jan. 31, Thomas Lehmann). It stays 15 mag for a while. In the Northern Hemisphere, it will be unobservable in April. In the Southern Hemisphere, it is not observable now, but it will appear in May. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Mar. 15 23 9.86 22 12.4 2.658 1.812 25 14.8 4:33 (260,-26) Mar. 22 23 27.32 21 14.3 2.690 1.811 22 14.9 4:40 (259,-22) C/2023 C2 ( ATLAS ) It brightened up to 12.7 mag in last summer (Aug. 7, Thomas Lehmann). Now it is 14.2 mag (Dec. 10, Ken-ichi Kadota). It stays 15 mag for a while. It locates somewhat low in the Northern Hemisphere. But it will become high in spring. In the Southern Hemisphere, it is not observable now, but it will be observable soon. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Mar. 15 22 1.97 10 14.2 3.550 2.704 27 14.9 4:33 (261, -6) Mar. 22 22 11.41 12 31.5 3.552 2.741 30 14.9 4:40 (256, -2) 217P/LINEAR It brightens up to 13 mag in early summer. But the condition in this apparition is bad. Brightening slowly. 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) Mar. 15 22 10.62 -12 40.5 2.365 1.514 24 15.2 4:33 (281, 6) Mar. 22 22 33.36 -11 10.6 2.302 1.467 25 14.9 4:40 (278, 7) 496P/2024 S3 ( Hill ) First return of a new periodic comet which brightened up to 15 mag in 2010. Now it is 15.3 mag (Mar. 10, A. Diepvens). Fading gradually. It will be fainter than 18 mag in July. 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) Mar. 15 4 28.34 32 57.9 1.534 1.622 76 15.3 19:43 (146, 12) Mar. 22 4 50.22 34 6.3 1.582 1.627 74 15.3 19:32 (147, 11) C/2014 UN271 ( Bernardinelli-Bernstein ) Very large comet. It is expected to brighten up to 13 mag in 2031. Now it is 15.1 mag (Feb. 5, 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) Mar. 15 3 40.63 -67 2.1 15.542 15.345 76 15.3 19:43 ( 27, 46) Mar. 22 3 43.75 -66 43.9 15.509 15.321 77 15.3 19:32 ( 28, 45) (3200) Phaethon Parent asteroid of Geminids meteor shower. Now it is 15.9 mag (Jan. 12, E. Prosperi, M. Jaeger). It brightens up to 13.5 mag, but it will turn to fade out rapidly after that. It will be fainter than 18 mag in June. In the Northern Hemisphere, it will be unobservable soon. But it will be observable again in May. In the Southern Hemisphere, it is not observable now, but it will appear in June. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Mar. 15 1 25.47 4 13.4 0.919 0.458 27 15.4 19:43 ( 95, 0) Mar. 22 0 57.48 0 17.0 0.843 0.261 13 15.8 19:32 ( 85, -8) C/2023 T3 ( Fuls ) Now it is 15.4 mag (Feb. 28, Andrew Pearce). 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) Mar. 15 13 21.14 -35 58.1 2.803 3.576 134 15.5 1:52 ( 0, 89) Mar. 22 13 19.75 -35 41.7 2.757 3.584 140 15.4 1:23 ( 0, 89) 43P/Wolf-Harrington Now it is 15.9 mag (Feb. 23, Thomas Lehmann). It stays 15 mag for a while. It will be unobservable in May. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Mar. 15 3 3.66 17 0.5 3.107 2.648 53 15.6 19:43 (120, 11) Mar. 22 3 14.86 17 30.3 3.161 2.629 49 15.6 19:32 (120, 10) C/2023 Q1 ( PanSTARRS ) Now it is 15.6 mag (Feb. 18, Michael Jager). Fading gradually. It will be fainter than 18 mag in July. In the Northern Hemisphere, it stays observable in good condition. In the Southern Hemisphere, it is not observable now, but it will appear in April. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Mar. 15 7 55.25 61 8.2 2.336 2.804 107 15.7 20:24 (180, -6) Mar. 22 8 1.83 58 53.5 2.420 2.834 104 15.8 20:03 (180, -4) C/2023 H5 ( Lemmon ) Now it is 14.9 mag (Mar. 7, Ken-ichi Kadota). 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) Mar. 15 11 48.34 60 51.0 3.802 4.403 121 15.7 0:20 (180, -6) Mar. 22 11 38.12 62 18.3 3.849 4.392 116 15.8 23:37 (180, -7) C/2023 F3 ( ATLAS ) Now it is 15.9 mag (Feb. 28, Andrew Pearce). It stays 16 mag for a while. In the Northern Hemisphere, it will be unobservable in June. In the Southern Hemisphere, it stays observable in good condition. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Mar. 15 12 16.91 -46 37.6 4.500 5.200 130 15.9 0:48 ( 0, 78) Mar. 22 12 3.88 -45 51.3 4.454 5.203 134 15.9 0:08 ( 0, 79) P/2025 A5 ( Catalina ) It approaches to Earth down to 0.3 a.u. in March. Now it is 16.5 mag (Mar. 14, Ken-ichi Kadota). It will fade out rapidly after this. It will be fainter than 18 mag in May. 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) Mar. 15 3 51.92 40 47.9 0.344 0.944 71 15.9 19:43 (145, 0) Mar. 22 4 23.32 54 6.6 0.345 0.967 75 16.0 19:32 (155, -8) C/2024 A1 ( ATLAS ) Now it is 15.5 mag (Feb. 26, Toshihiko Ikemura, Hirohisa Sato). It stays 16 mag for a while. It will be getting lower gradually after this, and it will be unobservable in June. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Mar. 15 6 31.44 -2 6.4 3.612 3.955 102 16.0 19:43 (160, 55) Mar. 22 6 30.33 0 0.0 3.706 3.944 96 16.0 19:32 (154, 52) 65P/Gunn Now it is 16.3 mag (Feb. 5, Thomas Lehmann). 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) Mar. 15 18 19.50 -25 27.5 2.971 2.963 79 16.1 4:33 (261, 59) Mar. 22 18 27.56 -25 41.6 2.872 2.957 85 16.0 4:40 (256, 65) C/2022 R6 ( PanSTARRS ) Now it is 16.1 mag (Mar. 9, ATLAS South Africa). It stays 16 mag for a while. In the Northern Hemisphere, it will be getting lower gradually after this, and it will be unobservable in May. In the Southern Hemisphere, it stays observable in good condition. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Mar. 15 6 40.52 -22 0.6 6.358 6.658 103 16.2 19:43 (147, 75) Mar. 22 6 41.65 -20 58.2 6.424 6.650 98 16.3 19:32 (138, 72) C/2024 J3 ( ATLAS ) It will brighten up to 13 mag in 2026. Now it is 16.9 mag (Mar. 5, ATLAS Chile). Brightening slowly. It locates somewhat low in the Northern Hemisphere. But it will become high in summer. In the Southern Hemisphere, it stays observable in good condition. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Mar. 15 19 41.09 -25 15.6 6.838 6.425 61 16.5 4:33 (274, 42) Mar. 22 19 43.45 -24 47.3 6.690 6.383 67 16.4 4:40 (269, 49) C/2017 K2 ( PanSTARRS ) It brightened up to 8 mag from 2022 summer to 2023 spring. Now it is 15.8 mag (Feb. 27, Ken-ichi Kadota). It stays 17 mag for a while. It will be unobservable in May. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Mar. 15 5 21.98 23 26.9 8.185 8.193 86 16.4 19:43 (151, 26) Mar. 22 5 22.50 23 38.6 8.357 8.246 80 16.5 19:32 (148, 24) 472P/2023 RL75 ( NEAT-LINEAR ) Now it is 15.8 mag (Feb. 18, Thomas Lehmann). Fading gradually. It will be fainter than 18 mag in June. In the Northern Hemisphere, it will be getting lower gradually. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Mar. 15 6 15.95 11 42.6 3.489 3.782 99 16.4 19:43 (161, 41) Mar. 22 6 19.94 11 58.9 3.608 3.803 93 16.6 19:32 (157, 40) (465402) 2008 HW1 It approached to Sun down to 0.1 a.u. on Jan. 29, and to Earth down to 0.1 a.u. in early March. Now it is 15.5 mag (Mar. 3, Guy Wells). 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 locates somewhat low in the Southern Hemisphere. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Mar. 15 10 17.56 44 15.9 0.276 1.204 134 16.5 22:43 (180, 12) Mar. 22 10 0.94 36 9.6 0.429 1.328 133 17.6 22:00 (180, 19) 249P/LINEAR It has not been observed yet in this apparition. Fading rapidly. It will be fainter than 18 mag soon. It stays extremely low in the Northern Hemisphere. 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) Mar. 15 0 57.38 7 48.2 1.810 0.963 21 16.5 19:43 ( 94, -8) Mar. 22 1 27.35 10 22.0 1.912 1.065 22 17.3 19:32 ( 98, -7) C/2024 B1 ( Lemmon ) It brightened up to 13.1 mag in autumn (Nov. 1, Thomas Lehmann). Now it is 16.2 mag (Mar. 5, ATLAS-MLO, Mauna Loa). Fading gradually. It will be fainter than 18 mag in June. It stays observable in good condition. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Mar. 15 18 8.07 14 5.7 2.520 2.603 83 16.6 4:33 (217, 33) Mar. 22 18 7.77 13 55.1 2.490 2.668 89 16.7 4:40 (208, 37) 105P/Singer Brewster It stays 17 mag for a while. In the Southern Hemisphere, it stays observable in good condition. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Mar. 15 19 2.71 -14 43.3 2.223 2.089 69 16.6 4:33 (255, 45) Mar. 22 19 15.79 -13 55.3 2.164 2.099 72 16.6 4:40 (249, 49) 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 16.8 mag (Mar. 9, A. Diepvens). It stays 17 mag for a while. It locates somewhat low in the Northern Hemisphere. But it will become high in spring. In the Southern Hemisphere, it is not observable now, but it will appear in May. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Mar. 15 22 43.59 33 5.9 5.681 4.932 37 16.6 4:33 (246,-26) Mar. 22 22 50.39 33 37.8 5.751 4.997 37 16.7 4:40 (243,-21) P/2008 Y12 = P/2014 K3 ( SOHO ) It approached to Sun down to 0.07 a.u. on Mar. 3. It will fade out rapidly after this. It will be fainter than 18 mag soon. In the Southern Hemisphere, it is appearing in the morning sky. In the Northern Hemisphere, it will never be observable after this. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Mar. 15 22 17.43 -24 18.2 0.877 0.491 29 16.6 4:33 (292, 11) Mar. 22 22 2.58 -29 44.7 0.914 0.688 41 18.2 4:40 (291, 23) C/2020 V2 ( ZTF ) It was observed at 9-10 mag for a long time in 2023. Now it is 15.8 mag (Dec. 7, A. Pearce). 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) Mar. 15 22 0.41 -60 45.8 7.352 6.932 61 16.7 4:33 (325, 30) Mar. 22 22 4.62 -61 6.6 7.335 6.986 65 16.8 4:40 (325, 34) C/2024 E1 ( Wierzchos ) It is expected to brighten up to 5 mag in 2026 January. Now it is 16.9 mag (Mar. 9, A. Diepvens). Brightening gradually. In the Northern Hemisphere, it stays observable in good condition. In the Southern Hemisphere, it will be unobservable in May. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Mar. 15 18 20.87 46 19.4 4.548 4.561 84 16.9 4:33 (203, 3) Mar. 22 18 24.00 47 23.7 4.438 4.486 86 16.8 4:40 (198, 4) 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 17.3 mag (Feb. 25, Ken-ichi Kadota). It stays 17 mag for a while. In the Northern Hemisphere, it will be unobservable in May. In the Southern Hemisphere, it stays observable in good condition. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Mar. 15 5 32.92 -28 6.1 6.706 6.738 87 16.8 19:43 (101, 67) Mar. 22 5 33.62 -26 56.3 6.829 6.786 83 16.8 19:32 (100, 63) C/2019 L3 ( ATLAS ) It brightened up to 8.3 mag in 2021-2022 winter (Jan. 6, 2022, Toshiyuki Takahashi). Now it is 17.1 mag (Dec. 30, 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) Mar. 15 12 20.68 -60 19.6 9.336 9.826 116 16.8 0:52 ( 0, 65) Mar. 22 12 16.66 -60 19.8 9.331 9.869 120 16.8 0:20 ( 0, 65) 12P/Pons-Brooks It returns for the first time in 70 years. It brightened up to 3.7 mag in early April in 2024 (Apr. 6, 2024, Jose Guilherme Aguiar). Now it is 17.2 mag (Feb. 7, Thomas Lehmann). Fading slowly. It will be fainter than 18 mag in June. 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) Mar. 15 17 16.73 -50 47.7 4.261 4.405 91 16.8 4:33 (325, 69) Mar. 22 17 14.97 -51 4.7 4.221 4.473 98 16.9 4:40 (340, 72) C/2019 U5 ( PanSTARRS ) Now it is 16.0 mag (Feb. 22, ATLAS Chile). It stays 17 mag for a while. In the Northern Hemisphere, it will be unobservable in April. In the Southern Hemisphere, it stays observable in good condition. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Mar. 15 5 24.42 -43 29.8 6.997 6.995 85 16.9 19:43 ( 60, 67) Mar. 22 5 23.17 -42 32.8 7.096 7.039 82 16.9 19:32 ( 64, 64) 195P/Hill Now it is 16.7 mag (Feb. 18, A. Diepvens). It stays 17 mag for a while. In the Northern Hemisphere, it will be getting lower gradually after this, and it will be unobservable in May. In the Southern Hemisphere, it stays observable in good condition. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Mar. 15 6 21.21 -7 15.0 4.205 4.488 100 17.0 19:43 (153, 60) Mar. 22 6 23.09 -6 54.3 4.292 4.484 94 17.1 19:32 (146, 58) C/2024 G2 ( ATLAS ) Now it is 17.1 mag (Mar. 10, ATLAS Chile). It stays 17 mag for a while. In the Northern Hemisphere, it will be unobservable in July. But it will be observable again in March. In the Southern Hemisphere, it stays observable in good condition. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Mar. 15 12 3.78 -45 11.0 4.671 5.390 132 17.2 0:35 ( 0, 80) Mar. 22 11 55.11 -43 57.1 4.617 5.384 136 17.1 23:54 ( 0, 81) 32P/Comas Sola It brightened up to 13.5 mag in last winter (Dec. 5, 2023, Chris Wyatt). Now it is 18.0 mag (Feb. 22, Ken-ichi Kadota). Fading slowly. It will be fainter than 18 mag in May. It stays observable in good condition. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Mar. 15 14 27.27 -7 47.9 2.539 3.335 136 17.3 2:58 (180, 63) Mar. 22 14 23.86 -7 35.5 2.510 3.372 144 17.4 2:27 (180, 63) 47P/Ashbrook-Jackson Brightening slowly. In the Northern Hemisphere, it is not observable now, but it will appear in April. In the Southern Hemisphere, it will be getting higher gradually. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Mar. 15 21 25.05 -24 4.6 3.793 3.085 39 17.5 4:33 (285, 21) Mar. 22 21 35.67 -23 13.4 3.718 3.070 43 17.4 4:40 (282, 25) (308607) 2005 WY3 Peculiar asteroid moving along a cometary orbit. Now it is 17.4 mag (Jan. 11, ATLAS South Africa). It stays 17 mag for a while. In the Northern Hemisphere, it will be getting lower gradually after this, and it will be unobservable in June. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Mar. 15 4 16.63 -6 17.1 2.208 2.076 69 17.5 19:43 (115, 40) Mar. 22 4 28.63 -5 6.7 2.228 2.040 66 17.5 19:32 (115, 38) 362P/(457175) 2008 GO98 Now it is 17.4 mag (Sept. 20, Taras Prystavski). It stays 17 mag for a while. It will be getting higher gradually. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Mar. 15 20 40.61 -5 26.5 3.752 3.123 44 17.5 4:33 (262, 20) Mar. 22 20 49.61 -4 39.6 3.699 3.137 48 17.5 4:40 (258, 25) 276P/Vorobjov Now it is 17.3 mag (Mar. 3, Erik Bryssinck). It stays 18 mag for a while. It will be unobservable in May. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Mar. 15 3 21.62 11 6.2 4.375 3.922 56 17.6 19:43 (119, 18) Mar. 22 3 28.58 11 29.3 4.463 3.925 51 17.6 19:32 (117, 16) 242P/Spahr Now it is 17.5 mag (Mar. 8, ATLAS-MLO, Mauna Loa). It stays 18 mag for a while. In the Northern Hemisphere, it will be getting lower gradually after this, and it will be unobservable in May. In the Southern Hemisphere, it will be getting lower gradually. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Mar. 15 4 11.89 -8 42.3 4.252 3.989 68 17.6 19:43 (111, 41) Mar. 22 4 17.82 -7 56.3 4.334 3.992 63 17.7 19:32 (110, 38) P/2025 C1 ( ATLAS ) Bright new periodic comet. It brightened up to 15.9 mag (Feb. 7, P. Sicoli). It seems to have brightened temporarily in outburst. Now it is 17.3 mag (Mar. 8, ATLAS Chile). It will fade out rapidly after this. It will be fainter than 18 mag soon. It stays observable in good condition. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Mar. 15 14 25.93 -17 30.0 1.966 2.755 134 17.7 2:56 (180, 73) Mar. 22 14 24.37 -17 48.4 1.908 2.759 141 18.0 2:27 (180, 73) C/2022 L2 ( ATLAS ) Now it is 16.6 mag (Mar. 11, ATLAS Chile). Fading slowly. It will be fainter than 18 mag soon. 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) Mar. 15 6 15.84 -30 11.9 4.301 4.528 96 17.7 19:43 (107, 76) Mar. 22 6 12.53 -28 32.5 4.435 4.579 91 17.8 19:32 (105, 72) C/2024 M1 ( ATLAS ) Almost stellar. It brightened up to 13.7 mag from late November to early December (Dec. 5, Toshihiko Ikemura, Hirohisa Sato). Now it is 17.5 mag (Feb. 14, Ken-ichi Kadota). Fading slowly. It will be fainter than 18 mag soon. 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) Mar. 15 2 44.68 57 46.7 2.350 2.225 70 17.7 19:43 (149,-19) Mar. 22 2 54.85 59 12.9 2.468 2.279 67 17.9 19:32 (150,-20) C/2024 V1 ( Borisov ) Now it is 17.4 mag (Feb. 24, ATLAS-MLO, Mauna Loa). 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 higher gradually. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Mar. 15 8 4.37 42 30.8 1.696 2.329 117 17.8 20:32 (180, 13) Mar. 22 8 2.00 38 42.0 1.757 2.323 112 17.9 20:02 (180, 17) C/2023 V1 ( Lemmon ) Now it is 18.1 mag (Oct. 11, Erik Bryssinck). 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. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Mar. 15 19 36.87 51 37.1 5.357 5.174 74 17.9 4:33 (210, -8) Mar. 22 19 35.46 52 49.5 5.313 5.165 76 17.9 4:40 (205, -6) C/2021 S4 ( Tsuchinshan ) Now it is 17.3 mag (Feb. 4, ATLAS-HKO, Haleakala). 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) Mar. 15 7 12.23 40 18.4 6.876 7.262 109 17.9 19:43 (180, 15) Mar. 22 7 13.10 39 58.2 6.996 7.280 102 18.0 19:32 (176, 15) C/2024 G6 ( ATLAS ) Now it is 18.6 mag (Aug. 31, ATLAS Chile). It stays 18 mag for a while. It locates somewhat low in the Northern Hemisphere. But it will become high in summer. In the Southern Hemisphere, it stays observable in good condition. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Mar. 15 17 22.78 -27 17.6 6.717 6.834 92 18.0 4:33 (251, 71) Mar. 22 17 21.30 -26 52.5 6.576 6.818 99 17.9 4:40 (233, 78) 30P/Reinmuth 1 It is fading very rapidly after the perihelion passage. Now it is 18.3 mag (Feb. 28, Toshihiko Ikemura, Hirohisa Sato). It will fade out rapidly after this. It will be fainter than 18 mag soon. It stays observable in good condition. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Mar. 15 15 7.19 -5 45.9 1.817 2.547 127 17.9 3:38 (180, 61) Mar. 22 15 5.67 -5 16.6 1.785 2.584 134 18.0 3:09 (180, 60) C/2022 U1 ( Leonard ) Now it is 17.8 mag (Nov. 12, ATLAS-HKO, Haleakala). It stays 18 mag for a while. In the Northern Hemisphere, it stays observable in good condition. In the Southern Hemisphere, it will be getting higher gradually. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Mar. 15 19 45.54 14 0.6 5.537 5.115 60 17.9 4:33 (237, 18) Mar. 22 19 45.61 14 15.1 5.480 5.147 65 17.9 4:40 (231, 24) (431760) 2008 HE It approached to Sun down to 0.11 a.u. on Mar. 9. It becomes unobseravble temporarily in March. But it will be observable in good condition in April. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Mar. 15 0 21.78 -0 58.5 0.798 0.257 10 20.6 19:43 ( 82,-10) Mar. 22 1 2.61 -0 17.8 0.556 0.478 14 23.2 19:32 ( 86, -5)