Weekly Information about Bright Comets (2024 Feb. 10: North)

Japanese version Home page	Updated on February 10, 2024
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Best time and the azimuth, altitude (A,h) are at lat. 35 deg in the Northern Hemisphere. Azimuth indicates 0 for south, 90 for west, 180 for north, 270 for east.

12P/Pons-Brooks It returns for the first time in 70 years. It will brighten up to 4.5 mag in spring. It suddenly brightened in major outburst by 5 mag up to 11.5 mag on July 20 (E. Tamas, Francois Kugel). It brightened again in another major outburst up to 9.4 mag on Nov. 15 (Nick James). Now it is 7.7 mag (Feb. 4, Virgilio Gonano). It will brighten rapidly after this. In the Northern Hemisphere, it will be unobservable in April. 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) Feb. 10 22 1.28 38 6.9 1.833 1.473 53 8.6 19:02 (125, 18) Feb. 17 22 33.88 37 40.7 1.775 1.381 50 8.1 19:08 (124, 17) 62P/Tsuchinshan 1 It brightened up to 7.4 mag from December to January (Dec. 24, Osamu Miyazaki). Now it is 8.7 mag (Feb. 4, Osamu Miyazaki). It will fade out rapidly after this. It stays observable in good condition. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Feb. 10 12 41.25 9 46.7 0.504 1.383 133 8.7 3:24 ( 0, 65) Feb. 17 12 42.50 9 49.6 0.511 1.417 139 9.1 2:58 ( 0, 65) C/2021 S3 ( PanSTARRS ) Now it is 9.9 mag (Feb. 2, Ken-ichi Kadota). Fading slowly. In the Northern Hemisphere, it will be getting higher gradually. In the Southern Hemisphere, it will be getting lower gradually after this, and it will be unobservable in May. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Feb. 10 17 9.68 -20 58.3 1.454 1.322 62 9.2 5:26 (322, 24) Feb. 17 17 31.81 -16 4.5 1.399 1.321 64 9.2 5:20 (319, 28) 144P/Kushida Now it is 10.5 mag (Feb. 8, Osamu Miyazaki). It will fade out rapidly after this. It stays observable in good condition. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Feb. 10 4 33.36 16 19.6 0.740 1.410 108 10.1 19:15 ( 0, 71) Feb. 17 4 53.96 16 47.8 0.779 1.422 106 10.1 19:09 ( 0, 72) C/2022 E2 ( ATLAS ) Now it is 12.4 mag (Feb. 4, Osamu Miyazaki). It stays 13 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 June. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Feb. 10 8 5.50 22 9.3 3.210 4.143 158 12.4 22:45 ( 0, 77) Feb. 17 7 53.41 23 39.2 3.242 4.115 148 12.4 22:05 ( 0, 79) C/2023 S3 ( Lemmon ) Now it is 13.3 mag (Dec. 16, Michael Mattiazzo). Fading rapidly. It will be fainter than 18 mag in April. In the Northern Hemisphere, it is not observable now, but it will be observable soon. In the Southern Hemisphere, it will be getting higher gradually. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Feb. 10 20 7.90 -33 55.7 1.683 0.919 26 12.5 5:26 (303,-13) Feb. 17 19 57.40 -32 44.1 1.620 0.979 34 13.3 5:20 (306, -7) P/2023 W1 ( NEAT ) First return of a new periodic comet which brightened up to 10 mag in 2001. It is expected to brighten up to 12-13 mag from February to March. Now it is 15.3 mag (Jan. 29, Ken-ichi Kadota). It will fade out rapidly after this. It locates somewhat low in the Northern Hemisphere. In the Southern Hemisphere, it will never be observable after this. Thomas Lehmann reported it was bright as 12.5 mag on Feb. 4. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Feb. 10 23 52.46 19 36.5 1.862 1.422 48 13.2 19:02 ( 95, 30) Feb. 17 0 2.32 23 39.6 1.886 1.411 47 12.8 19:08 (102, 27) C/2023 A3 ( Tsuchinshan-ATLAS ) It will approach to Sun down to 0.4 a.u. in late September, and it is expected to brighten up to 0 mag. Now it is 13.6 mag (Feb. 5, Thomas Lehmann). It will brighten rapidly after this. It stays observable in good condition. At the high light, in the Northern Hemisphere, it will be observable in good condition after the perihelion passage. In the Southern Hemisphere, it will be observable in the low sky before and after the perihelion passage. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Feb. 10 15 10.99 -7 51.6 3.608 3.787 92 13.1 5:26 (350, 47) Feb. 17 15 10.25 -7 45.2 3.402 3.704 100 12.8 5:20 (358, 47) C/2020 V2 ( ZTF ) It was observed at 9-10 mag for a long time in 2023. Now it is 12.6 mag (Feb. 2, Chris Wyatt). It stays 14 mag for a while. 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) Feb. 10 23 32.39 -39 36.9 4.499 3.751 36 13.0 19:02 ( 48,-10) Feb. 17 23 36.56 -39 29.1 4.578 3.807 34 13.1 19:08 ( 52,-14) 207P/NEAT Now it is 13.2 mag (Feb. 1, Thomas Lehmann). It will fade out rapidly after this. It will be fainter than 18 mag in May. It stays observable in good condition. Vladimir Bezugly reported it is visible at around 12 mag in the SOHO LASCO images in late January. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Feb. 10 2 40.35 -16 57.0 0.315 0.949 73 13.3 19:02 ( 28, 33) Feb. 17 3 24.64 -17 4.3 0.274 0.971 78 13.1 19:08 ( 25, 34) C/2022 L2 ( ATLAS ) Now it is 14.0 mag (Feb. 2, Ken-ichi Kadota). It stays 13 mag for a while. It locates somewhat low in the Northern Hemisphere. In the Southern Hemisphere, it stays observable in good condition. It is expected to brighten up to 12.5 mag in spring. At the high light, it will be observable in excellent condition in the Southern Hemisphere, but it will be low in the Northern Hemisphere. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Feb. 10 15 18.76 -26 44.1 2.594 2.713 86 13.3 5:26 (351, 28) Feb. 17 15 10.64 -28 39.9 2.444 2.705 94 13.2 5:20 (358, 26) C/2017 K2 ( PanSTARRS ) It brightened up to 8 mag from 2022 summer to 2023 spring. Now it is 13.1 mag (Feb. 4, Osamu Miyazaki). Fading slowly. It will be getting lower gradually after this, and it will be unobservable in May in the Northern Hemisphere, or in June in the Southern Hemisphere. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Feb. 10 5 9.81 3 2.7 4.473 4.965 114 13.4 19:50 ( 0, 58) Feb. 17 5 7.80 4 3.6 4.636 5.026 107 13.5 19:21 ( 0, 59) 29P/Schwassmann-Wachmann 1 Now it is 12.4 mag (Feb. 2, Chris Wyatt). It stays observable in good condition. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Feb. 10 8 15.92 21 22.4 5.236 6.177 160 13.5 22:56 ( 0, 76) Feb. 17 8 12.84 21 26.2 5.281 6.179 153 13.5 22:25 ( 0, 76) 103P/Hartley 2 It approached to Earth down to 0.38 a.u., and brightened up to 8.0 mag in autumn (Sept. 29, Virgilio Gonano). Now it is 14.7 mag (Feb. 2, Chris Wyatt). It will fade out rapidly after this. 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) Feb. 10 8 4.30 -7 55.3 0.939 1.854 148 13.6 22:44 ( 0, 47) Feb. 17 8 1.06 -6 8.8 1.019 1.916 145 14.0 22:13 ( 0, 49) C/2019 U5 ( PanSTARRS ) Now it is 13.9 mag (Feb. 2, Chris Wyatt). Fading slowly. 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) Feb. 10 8 47.84 -45 49.5 4.026 4.582 118 13.7 23:26 ( 0, 9) Feb. 17 8 33.58 -45 31.2 4.058 4.619 119 13.8 22:45 ( 0, 9) 32P/Comas Sola Now it is 14.5 mag (Feb. 1, Chris Wyatt). 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. But it will become high in winter. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Feb. 10 3 12.35 22 55.9 1.852 2.121 91 13.9 19:02 ( 56, 71) Feb. 17 3 22.29 23 49.9 1.911 2.103 86 13.9 19:08 ( 67, 67) 13P/Olbers It returned for the first time in 68 years. It will brighten up to 7.5 mag in summer. Now it is 13.6 mag (Feb. 2, Alan Hale). It will brighten rapidly after this. In the Northern Hemisphere, it will be getting lower gradually. In the Southern Hemisphere, it will be getting lower gradually after this, and it will be unobservable in April. At the high light, it locates low in the Northern Hemisphere, or it is not observable in the Southern Hemisphere. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Feb. 10 2 53.59 -2 53.1 2.252 2.299 80 14.2 19:02 ( 33, 47) Feb. 17 2 56.44 -0 27.3 2.271 2.225 74 13.9 19:08 ( 44, 45) C/2021 G2 ( ATLAS ) Now it is 14.3 mag (Feb. 5, Thomas Lehmann). It stays 14 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) Feb. 10 12 14.62 -38 53.5 4.759 5.242 114 14.1 2:58 ( 0, 16) Feb. 17 12 13.74 -38 53.0 4.663 5.226 119 14.0 2:30 ( 0, 16) C/2021 T4 ( Lemmon ) It brightened up to 7.8 mag in late July (July 20, Thomas Lehmann). Now it is 15.3 mag (Feb. 5, Thomas Lehmann). Fading gradually. It stays observable in good condition. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Feb. 10 14 56.04 2 33.9 2.597 2.921 99 14.2 5:26 (354, 57) Feb. 17 14 47.73 4 33.9 2.530 2.991 108 14.3 5:03 ( 0, 59) C/2019 L3 ( ATLAS ) It brightened up to 8.3 mag in 2021-2022 winter (Jan. 6, 2022, Toshiyuki Takahashi). Now it is 15.7 mag (Jan. 31, ATLAS Chile). It stays 15 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) Feb. 10 11 16.72 -53 24.7 6.918 7.288 108 14.4 2:00 ( 0, 1) Feb. 17 11 12.78 -53 45.8 6.905 7.333 112 14.4 1:29 ( 0, 1) 26P/Grigg-Skjellerup Now it is 15.1 mag (Jan. 23, Ken-ichi Kadota). Fading rapidly. It will be fainter than 18 mag soon. It locates somewhat low. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Feb. 10 19 6.35 -11 34.4 1.907 1.241 35 15.1 5:26 (294, 12) Feb. 17 19 29.22 -9 39.0 1.934 1.286 36 16.2 5:20 (292, 13) C/2020 K1 ( PanSTARRS ) It brightened up to 12.1 mag in 2023 spring (May 20, Jose Guilherme de S. Aguiar). Now it is 14.7 mag (Feb. 2, Chris Wyatt). Fading slowly. In the Northern Hemisphere, it is not observable now. In the Southern Hemisphere, it stays observable in good condition. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Feb. 10 3 51.62 -69 35.4 4.143 4.054 78 15.1 19:02 ( 3,-15) Feb. 17 3 56.60 -67 4.0 4.178 4.096 78 15.2 19:08 ( 6,-12) C/2023 H2 ( Lemmon ) It approached to Earth down to 0.2 a.u. in early November, and brightened up to 6.2 mag (Nov. 11, Marco Goiato). Now it is 14.4 mag (Feb. 5, Thomas Lehmann). Fading gradually. It will be fainter than 18 mag in May. 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) Feb. 10 23 59.45 -43 30.9 2.533 1.928 42 15.1 19:02 ( 42, -8) Feb. 17 0 8.65 -43 43.7 2.640 2.017 41 15.4 19:08 ( 45,-12) P/2023 WM26 ( Elenin ) First return of a new periodic comet which was discovered in 2011, half a year after the perihelion passage. It is expected to brighten up to 14 mag in spring. Now it is 15.4 mag (Feb. 4, Ken-ichi Kadota). Brightening slowly. It stays observable in good condition. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Feb. 10 8 11.66 8 34.1 0.711 1.672 159 15.5 22:51 ( 0, 63) Feb. 17 8 1.78 6 37.1 0.680 1.615 150 15.2 22:14 ( 0, 61) C/2023 P1 ( Nishimura ) It approached to Sun down to 0.23 a.u. and brightened up to 2.5 mag in mid September (Sept. 18, Juan Jose Gonzalez). Now it is 17.0 mag (Jan. 28, Jean-Claude Merlin). It will fade out rapidly after this. It will be fainter than 18 mag in May. In the Northern Hemisphere, it is not observable now, but it will be observable soon. In the Southern Hemisphere, it stays observable in good condition. Thomas Lehmann reported it was bright as 14.1 mag on Feb. 4. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Feb. 10 9 54.01 -56 42.4 2.345 2.817 108 15.3 0:39 ( 0, -2) Feb. 17 9 29.63 -55 22.2 2.394 2.912 112 15.5 23:40 ( 0, 0) 227P/Catalina-LINEAR Now it is 15.4 mag (Jan. 31, ATLAS-MLO, Mauna Loa). 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. 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) Feb. 10 7 24.70 38 56.9 0.746 1.645 143 15.4 22:05 (180, 86) Feb. 17 7 26.46 38 18.8 0.766 1.636 137 15.4 21:40 (180, 87) 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 15.1 mag (Jan. 20, Thomas Lehmann). It stays 16 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) Feb. 10 17 29.77 20 9.9 6.748 6.457 68 15.5 5:26 (281, 51) Feb. 17 17 33.64 20 56.5 6.715 6.497 73 15.5 5:20 (283, 54) C/2023 V4 ( Camarasa-Duszanowicz ) It is expected to brighten up to 12 mag in early summer. Now it is 15.5 mag (Feb. 7, Thomas Lehmann). It will brighten rapidly after this. It locates somewhat low in the Northern Hemisphere. In the Southern Hemisphere, it will be getting lower gradually after this, and it will be unobservable in April. At the high light, it is not observable in the Southern Hemisphere, or it locates low in the Northern Hemisphere. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Feb. 10 2 3.40 -16 12.7 2.219 2.017 65 15.7 19:02 ( 39, 30) Feb. 17 2 6.35 -12 26.9 2.226 1.937 60 15.5 19:08 ( 48, 28) C/2023 C2 ( ATLAS ) It is expected to brighten up to 12.5 mag in summer. Now it is 15.8 mag (Feb. 7, Thomas Lehmann). Brightening gradually. In the Northern Hemisphere, it is not observable now. In the Southern Hemisphere, it stays observable in good condition. Around the high light, it is observable in good condition in the Southern Hemisphere, but it locates very low in the Northern Hemisphere. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Feb. 10 15 28.01 -66 11.3 3.906 3.806 76 15.8 5:26 (355,-12) Feb. 17 15 40.89 -67 24.0 3.790 3.753 80 15.6 5:20 (356,-13) C/2022 QE78 ( ATLAS ) Now it is 15.6 mag (Jan. 11, 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 May in the Northern Hemisphere, or in June in the Southern Hemisphere. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Feb. 10 4 28.50 -8 23.1 6.619 6.884 101 15.8 19:09 ( 0, 47) Feb. 17 4 28.97 -7 41.0 6.686 6.855 95 15.8 19:08 ( 9, 47) C/2014 UN271 ( Bernardinelli-Bernstein ) Very large comet. It is expected to brighten up to 13 mag in 2031. Now it is 16.6 mag (Jan. 23, ATLAS Chile). It stays 16 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) Feb. 10 2 52.69 -63 47.8 16.978 16.709 72 15.9 19:02 ( 10,-10) Feb. 17 2 53.73 -63 29.0 16.968 16.685 71 15.9 19:08 ( 13,-11) 226P/Pigott-LINEAR-Kowalski Now it is 15.4 mag (Jan. 15, Toshihiko Ikemura, Hirohisa Sato). It will fade out rapidly after this. It will be fainter than 18 mag in April. In the Northern Hemisphere, it will be getting lower gradually. In the Southern Hemisphere, it will be unobservable in March. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Feb. 10 1 36.30 12 36.2 1.975 1.823 66 15.9 19:02 ( 70, 47) Feb. 17 1 46.90 15 45.2 2.062 1.839 63 16.1 19:08 ( 78, 44) 65P/Gunn It will be observable at 15-16 mag from 2024 to 2025. Now it is 17.3 mag (Jan. 24, ATLAS South Africa). It stays 16 mag for a while. It stays observable in good condition. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Feb. 10 13 19.40 1 42.8 3.054 3.676 122 16.1 4:03 ( 0, 57) Feb. 17 13 19.17 1 55.3 2.954 3.660 129 16.0 3:35 ( 0, 57) C/2022 S4 ( Lemmon ) Now it is 16.0 mag (Jan. 1, Ken-ichi Kadota). It stays 16 mag for a while. In the Northern Hemisphere, it will be unobservable in March. In the Southern Hemisphere, it will be getting lower gradually. But it will be getting higher again after May. The brightness evolution is slower than originally expected. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Feb. 10 1 43.07 -30 41.2 3.593 3.207 59 16.1 19:02 ( 34, 15) Feb. 17 1 45.86 -30 42.4 3.628 3.172 55 16.1 19:08 ( 40, 11) 150P/LONEOS Now it is 16.1 mag (Jan. 29, ATLAS Chile). 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) Feb. 10 8 50.72 -13 57.8 0.849 1.772 149 16.3 23:30 ( 0, 41) Feb. 17 8 45.34 -15 10.7 0.849 1.762 147 16.3 22:57 ( 0, 40) 125P/Spacewatch It is expected to brighten up to 15.5 mag from March to April. Now it is 16.9 mag (Jan. 27, ATLAS-HKO, Haleakala). Brightening slowly. It locates somewhat low in the Northern Hemisphere. But it will become high in spring. In the Southern Hemisphere, it stays observable in good condition. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Feb. 10 17 11.46 -14 32.3 1.732 1.549 62 16.7 5:26 (318, 29) Feb. 17 17 33.61 -14 29.8 1.684 1.539 64 16.4 5:20 (318, 29) C/2021 Y1 ( ATLAS ) It brightened up to 13 mag in early 2023. 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) Feb. 10 16 30.72 -48 1.6 4.026 3.790 69 16.4 5:26 (342, 3) Feb. 17 16 33.90 -47 57.4 3.986 3.850 74 16.4 5:20 (345, 5) C/2022 T1 ( Lemmon ) Now it is 16.9 mag (Jan. 20, ATLAS Chile). It stays 16 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) Feb. 10 14 2.95 -28 23.7 3.111 3.446 101 16.5 4:46 ( 0, 26) Feb. 17 14 7.21 -28 38.9 3.019 3.445 107 16.5 4:23 ( 0, 26) C/2023 F3 ( ATLAS ) It stays 16 mag in the Southern sky for a long time from 2024 to 2025. 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) Feb. 10 16 55.42 -45 16.7 6.195 5.844 64 16.6 5:26 (337, 4) Feb. 17 16 54.75 -45 57.9 6.059 5.821 71 16.6 5:20 (341, 5) 471P/2023 KF3 Now it is 16.5 mag (Jan. 31, Thomas Lehmann). It will fade out rapidly after this. It will be fainter than 18 mag in April. In the Northern Hemisphere, it will be getting lower gradually. In the Southern Hemisphere, it will be unobservable in March. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Feb. 10 0 56.20 9 59.3 2.561 2.177 56 16.7 19:02 ( 75, 38) Feb. 17 1 10.56 11 16.4 2.637 2.193 53 16.8 19:08 ( 79, 34) C/2022 U3 ( Bok ) Now it is 17.0 mag (Jan. 9, Toshihiko Ikemura, Hirohisa Sato). 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) Feb. 10 4 35.16 29 44.2 4.567 5.005 110 16.8 19:16 ( 0, 85) Feb. 17 4 36.82 29 6.7 4.656 4.991 104 16.8 19:08 ( 33, 83) C/2019 E3 ( ATLAS ) Very far object. Now it is 17.0 mag (Jan. 27, 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) Feb. 10 2 12.17 -70 4.9 10.627 10.323 69 16.8 19:02 ( 11,-18) Feb. 17 2 11.94 -69 15.9 10.635 10.325 69 16.8 19:08 ( 14,-18) C/2021 S4 ( Tsuchinshan ) Now it is 16.8 mag (Jan. 29, D. Buczynski). 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 April. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Feb. 10 4 32.49 40 13.9 6.276 6.694 111 17.0 19:14 (180, 85) Feb. 17 4 33.81 40 1.0 6.379 6.696 104 17.0 19:08 (143, 84) C/2022 R6 ( PanSTARRS ) Now it is 16.5 mag (Jan. 25, 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) Feb. 10 4 45.74 -36 35.5 7.398 7.558 95 17.0 19:26 ( 0, 19) Feb. 17 4 46.21 -35 45.3 7.433 7.536 92 17.0 19:08 ( 2, 19) 30P/Reinmuth 1 Now it is 17.3 mag (Jan. 15, ATLAS-HKO, Haleakala). Brightening slowly. It will be unobservable in May. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Feb. 10 1 56.86 4 37.7 2.620 2.439 68 17.1 19:02 ( 56, 45) Feb. 17 2 5.50 5 46.0 2.667 2.403 63 17.1 19:08 ( 63, 42) C/2023 K1 ( ATLAS ) It brightened very rapidly up to 14.9 mag in early summer (July 13, Taras Prystavski). Now it is 17.2 mag (Jan. 16, Ken-ichi Kadota). Fading gradually. It will be fainter than 18 mag in April. 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) Feb. 10 14 53.22 13 27.6 2.343 2.730 102 17.1 5:26 (353, 68) Feb. 17 14 46.12 17 11.3 2.275 2.782 110 17.1 5:02 ( 0, 72) P/2023 Y3 ( ATLAS ) Now it is 17.5 mag (Jan. 29, D. Buczynski). 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) Feb. 10 6 46.68 19 9.0 1.609 2.452 140 17.3 21:27 ( 0, 74) Feb. 17 6 45.54 19 57.1 1.658 2.443 133 17.3 20:59 ( 0, 75) C/2022 A3 ( Lemmon-ATLAS ) Now it is 17.6 mag (Jan. 22, Jean-Claude Merlin). It stays 18 mag for a while. In the Northern Hemisphere, it will never be observable after this. In the Southern Hemisphere, it stays observable in good condition. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Feb. 10 5 31.39 -71 34.2 3.850 3.890 84 17.3 20:09 ( 0,-16) Feb. 17 5 8.56 -70 26.6 3.886 3.910 84 17.4 19:19 ( 0,-15) C/2023 T3 ( Fuls ) Now it is 17.3 mag (Jan. 30, ATLAS Chile). It stays 17 mag for a while. It stays observable in good condition. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Feb. 10 7 51.86 -9 27.5 3.868 4.714 145 17.4 22:32 ( 0, 45) Feb. 17 7 48.89 -9 17.5 3.865 4.676 141 17.3 22:01 ( 0, 46) 299P/Catalina-PanSTARRS Now it is 17.7 mag (Jan. 11, Ken-ichi Kadota). It stays 17 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) Feb. 10 15 34.28 -27 47.9 3.157 3.183 82 17.5 5:26 (347, 26) Feb. 17 15 41.02 -28 15.7 3.056 3.178 87 17.5 5:20 (351, 26) C/2022 V2 ( Lemmon ) Now it is 17.0 mag (Jan. 27, ATLAS South Africa). Fading gradually. It will be fainter than 18 mag in March. 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) Feb. 10 9 5.77 -35 14.5 1.606 2.362 129 17.5 23:43 ( 0, 20) Feb. 17 8 37.21 -36 9.9 1.665 2.401 127 17.6 22:47 ( 0, 19) 216P/LINEAR Now it is 17.4 mag (Jan. 10, ATLAS Chile). It will fade out rapidly after this. It will be fainter than 18 mag in March. It stays observable in good condition. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Feb. 10 12 16.39 2 28.4 1.311 2.144 137 17.5 3:00 ( 0, 57) Feb. 17 12 14.97 2 2.4 1.268 2.152 144 17.5 2:31 ( 0, 57) C/2023 R2 ( PanSTARRS ) Now it is 18.0 mag (Jan. 29, Ken-ichi Kadota). It will brighten rapidly after this. It will be getting lower gradually after this, and it will be unobservable in April in the Northern Hemisphere, or in June in the Southern Hemisphere. It will brighten up to 11 mag in summer. But it is not observable at the high light. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Feb. 10 2 18.48 -7 17.3 3.097 2.922 70 17.6 19:02 ( 40, 39) Feb. 17 2 22.83 -6 36.5 3.107 2.839 65 17.5 19:08 ( 48, 35) C/2023 H5 ( Lemmon ) Now it is 17.7 mag (Jan. 31, 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) Feb. 10 10 54.65 3 24.5 5.007 5.925 156 17.6 1:38 ( 0, 58) Feb. 17 10 50.47 4 32.8 4.929 5.889 165 17.5 1:07 ( 0, 59) 170P/Christensen Now it is 16.7 mag (Jan. 30, ATLAS Chile). Fading slowly. It will be fainter than 18 mag in March. In the Northern Hemisphere, it will be getting lower gradually. It locates somewhat low in the Southern Hemisphere. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Feb. 10 3 28.98 8 20.7 3.147 3.324 91 17.5 19:02 ( 27, 61) Feb. 17 3 33.78 9 2.1 3.262 3.341 85 17.7 19:08 ( 40, 58) C/2020 F2 ( ATLAS ) Now it is 17.3 mag (Jan. 20, ATLAS-HKO, Haleakala). 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) Feb. 10 12 17.26 17 15.8 8.643 9.421 140 17.5 3:01 ( 0, 72) Feb. 17 12 13.57 17 50.5 8.591 9.435 147 17.5 2:30 ( 0, 73) C/2020 Y2 ( ATLAS ) It brightened up to 14.1 mag in 2022 spring (Mar. 22, 2022, Chris Wyatt). Now it is 17.2 mag (Jan. 13, ATLAS-MLO, Mauna Loa). It stays 18 mag for a while. It will be unobservable in March. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Feb. 10 1 17.83 4 3.5 6.667 6.220 59 17.6 19:02 ( 65, 38) Feb. 17 1 19.19 4 41.2 6.818 6.268 52 17.7 19:08 ( 72, 32) C/2022 E3 ( ZTF ) It approached to Earth down to 0.29 a.u. in early last February, and it brightened up to 4.5 mag (Feb. 1, Juan Jose Gonzalez). Now it is 17.7 mag (Feb. 7, Thomas Lehmann). Fading slowly. It will be fainter than 18 mag in March. 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) Feb. 10 3 0.59 -54 28.8 5.215 5.028 73 17.6 19:02 ( 12, -1) Feb. 17 2 59.96 -53 21.1 5.323 5.095 71 17.7 19:08 ( 17, -2) C/2024 A1 ( ATLAS ) Now it is 17.8 mag (Jan. 19, ATLAS Chile). It stays 17 mag for a while. In the Northern Hemisphere, it is not observable now, but it will appear in March. In the Southern Hemisphere, it stays observable in good condition. It stays 15 mag for a long time from late 2024 to early 2026. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Feb. 10 6 15.86 -60 28.5 5.476 5.654 95 17.7 20:55 ( 0, -5) Feb. 17 6 10.43 -58 57.2 5.437 5.614 95 17.7 20:22 ( 0, -4) C/2023 T2 ( Borisov ) Now it is 17.3 mag (Jan. 22, ATLAS-HKO, Haleakala). Fading gradually. It will be fainter than 18 mag soon. 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) Feb. 10 3 54.06 65 54.5 1.586 2.082 105 17.7 19:02 (175, 59) Feb. 17 4 23.59 62 28.1 1.641 2.108 103 17.8 19:08 (173, 62) 408P/2020 M7 ( Novichonok-Gerke ) Now it is 17.2 mag (Jan. 19, ATLAS-HKO, Haleakala). Fading slowly. 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) Feb. 10 8 26.46 -2 50.7 3.191 4.113 156 17.9 23:06 ( 0, 52) Feb. 17 8 22.91 -2 12.8 3.229 4.128 152 18.0 22:35 ( 0, 53) (468861) 2013 LU28 Far asteroid moving along a cometary orbit. It brightens up to 18 mag from 2024 to 2025. 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) Feb. 10 8 15.89 50 42.5 7.987 8.775 140 17.9 22:56 (180, 74) Feb. 17 8 8.89 50 26.9 8.036 8.771 135 17.9 22:22 (180, 75)