https://www.astronomerstelegram.org Variables, from The Astronomer's Telegram en-us https://www.astronomerstelegram.org/?read=17811 Y. Motogami, H. Noda, Y. Kanemaru, A. Miyamoto, Y. Omiya, Y. Uchida, T. Yoneyama, M. Audard, E. Behar, K. Fukushima, T. Hakamata, S. Inoue, Y. Ishihara, C. Kang, T. Kiyomoto, T. Kohmura, H. Kuramoto, Y. Maeda, H. Matsumoto, A. Miyamoto, M. Mizumoto, T. Narita, M. Nobukawa, S. Ogawa, Y. Sakamoto, M. Shidatsu, H. Takahashi, T. Takagi, S. Takatsuka, F. Takisawa, Y. Terada, Y. Terashima, Y. Tsuboi, H. Uchida, A. Yoshimoto, M. Yoshimoto, P. P. Plucinsky Y. Motogami, H. Noda, Y. Kanemaru, A. Miyamoto, Y. Omiya, Y. Uchida, T. Yoneyama, M. Audard, E. Behar, K. Fukushima, T. Hakamata, S. Inoue, Y. Ishihara, C. Kang, T. Kiyomoto, T. Kohmura, H. Kuramoto, Y. Maeda, H. Matsumoto, A. Miyamoto, M. Mizumoto, T. Narita, M. Nobukawa, S. Ogawa, Y. Sakamoto, M. Shidatsu, H. Takahashi, T. Takagi, S. Takatsuka, F. Takisawa, Y. Terada, Y. Terashima, Y. Tsuboi, H. Uchida, A. Yoshimoto, M. Yoshimoto, P. P. Plucinsky yoneyama.tomokage@jaxa.jp Credentialed by: Tomokage Yoneyama (tyoneyama263@g.chuo-u.ac.jp) The Astronomer's Telegram ATel17811 XRISM/Xtend Transient Search (XTS) detected a new X-ray transient source candidate XRISM J2326+5843 on an observation during 2026-05-23 to 2026-05-24 TT, whose exposure is 47 ks. ... 2026-05-25T07:24:39-00:00 https://www.astronomerstelegram.org/?read=17796 Akash Anumarlapudi, David Kaplan, Kovi Rose and Tara Murphy, on behalf of the VAST collaboration. Akash Anumarlapudi, David Kaplan, Kovi Rose and Tara Murphy, on behalf of the VAST collaboration. akasha@unc.edu Credentialed by: Akash Anumarlapudi (akasha@unc.edu) The Astronomer's Telegram ATel17796 SPT-SV J222602.8-540533 (ATel #17781) was discovered as a millimeter (mm) transient by the South Pole telescope (SPT) on 2026 April 13 UT. The source exhibited flaring behavior with a inverted spectrum (brighter at 150 GHz than 95 GHz) suggesting that the transient might be self-absorbed at lower frequencies. ... 2026-05-12T13:41:58-00:00 https://www.astronomerstelegram.org/?read=17791 Hiromasa Hoke, Keisuke Isogai, Hiroshi Itoh, Masayuki Moriyama Hiromasa Hoke, Keisuke Isogai, Hiroshi Itoh, Masayuki Moriyama hoke@kusastro.kyoto-u.ac.jp Credentialed by: Keisuke Isogai (isogai@kusastro.kyoto-u.ac.jp) The Astronomer's Telegram ATel17791 We report on spectral features seen in the transient TCP J07151825+4753167 on 2026-05-09.534 UT and TCP J15030519+2202041 on 2026-05-09.554 obtained by using a fiber-fed integral field spectrograph (KOOLS-IFU; Matsubayashi et al. ... 2026-05-10T17:43:21-00:00 https://www.astronomerstelegram.org/?read=17784 Marchev, D. ; Borisov, B. ; Atanasova-Sartliiska, T. ; Yordanova, G. ; Georgiev, A. ; Marchev, V. Marchev, D. ; Borisov, B. ; Atanasova-Sartliiska, T. ; Yordanova, G. ; Georgiev, A. ; Marchev, V. vlad.marchev@gmail.com Credentialed by: Vladislav Marchev (vlad.marchev@gmail.com) The Astronomer's Telegram ATel17784 We present our recent photometric observations of T CrB obtained on the 5th and 6th of May 2026 and we compare them with the ones from ATel#17052 an year ago. ... 2026-05-09T14:36:32-00:00 https://www.astronomerstelegram.org/?read=17767 Yoshinori Yonekura, Ross A. Burns Yoshinori Yonekura, Ross A. Burns yoshinori.yonekura.sci@vc.ibaraki.ac.jp Credentialed by: Yoshinori Yonekura (yoshinori.yonekura@gmail.com) The Astronomer's Telegram ATel17767 We have detected the second flux rise since 2023-2024 in the 6.668 GHz Class II methanol maser toward G11.497-1.485 (IRAS 18134-1942) (RA, DEC) = (18h16m22.13s, -19d41'27.100") using Hitachi 32-m radio telescope operated by Ibaraki University. ... 2026-04-27T11:23:05-00:00 https://www.astronomerstelegram.org/?read=17761 J. Kurashima, K. Mori, Y. Kanemaru, Y. Omiya, Y. Uchida, T. Yoneyama, M. Audard, E. Behar, K. Fukushima, T. Hakamata, S. Inoue, Y. Ishihara, C. Kang, T. Kiyomoto, T. Kohmura, H. Kuramoto, Y. Maeda, H. Matsumoto, A. Miyamoto, M. Mizumoto, Y. Motogami, T. Narita, M. Nobukawa, H. Noda, S. Ogawa, Y. Sakamoto, M. Shidatsu, H. Takahashi, T. Takagi, S. Takatsuka, F. Takisawa, Y. Terashima, Y. Tsuboi, H. Uchida, A. Yoshimoto, M. Yoshimoto, Y. Terada J. Kurashima, K. Mori, Y. Kanemaru, Y. Omiya, Y. Uchida, T. Yoneyama, M. Audard, E. Behar, K. Fukushima, T. Hakamata, S. Inoue, Y. Ishihara, C. Kang, T. Kiyomoto, T. Kohmura, H. Kuramoto, Y. Maeda, H. Matsumoto, A. Miyamoto, M. Mizumoto, Y. Motogami, T. Narita, M. Nobukawa, H. Noda, S. Ogawa, Y. Sakamoto, M. Shidatsu, H. Takahashi, T. Takagi, S. Takatsuka, F. Takisawa, Y. Terashima, Y. Tsuboi, H. Uchida, A. Yoshimoto, M. Yoshimoto, Y. Terada yoneyama.tomokage@jaxa.jp Credentialed by: Tomokage Yoneyama (tyoneyama263@g.chuo-u.ac.jp) The Astronomer's Telegram ATel17761 XRISM/Xtend Transient Search (XTS) detected an X-ray flare from an X-ray source XRISM J0534-6855, on 2026-04-17 TT. The source position is determined to be (R.A., Dec.) = (83.396, -68.915) with a systematic error of & sim; 40 arcsec. ... 2026-04-23T13:59:33-00:00