https://www.astronomerstelegram.org Variables, from The Astronomer's Telegram en-us https://www.astronomerstelegram.org/?read=18025 Robbie Webbe, Natalie A. Webb, Erwan Quintin, Laurent Michel Robbie Webbe, Natalie A. Webb, Erwan Quintin, Laurent Michel robbie.webbe@cnrs.fr Credentialed by: Robbie Webbe (robbie.webbe@cnrs.fr) The Astronomer's Telegram ATel18025 We report the detection of X-ray brightening from the source IGR J13020-6359 with the XMM-Newton X-ray telescope in the energy range 0.2-12.0 keV. On 7th August 2026 IGR J13020-6359 was observed in the field of view of an XMM-Newton observation, and the long-term variability was assessed using the multi-observatory STONKS pipeline. ... 2026-09-01T10:23:44-00:00 https://www.astronomerstelegram.org/?read=18009 Katie Barnhart, Kirill Sokolovsky, Darien Perla, Pragati Acharya, John Worley, Anthony Pearce, Vallia Antoniou, Elias Aydi, Bassam Debs, and Omar Kilo . Katie Barnhart, Kirill Sokolovsky, Darien Perla, Pragati Acharya, John Worley, Anthony Pearce, Vallia Antoniou, Elias Aydi, Bassam Debs, and Omar Kilo . eaydi@ttu.edu Credentialed by: Elias Aydi (eaydi@ttu.edu) The Astronomer's Telegram ATel18009 We report the discovery of the likely Galactic nova NMW-TTU-26bp (PNV J19450648+1822422). The transient was discovered by the NMW-TexasTech survey on 2026-08-25.12 UTC at an unfiltered magnitude of 9.0. ... 2026-08-25T18:04:56-00:00 https://www.astronomerstelegram.org/?read=18008 Kenta Taguchi, Akira Arai Kenta Taguchi, Akira Arai kentagch@kusastro.kyoto-u.ac.jp Credentialed by: Keisuke Isogai (isogai@kusastro.kyoto-u.ac.jp) The Astronomer's Telegram ATel18008 We report the spectroscopic observation of PNV J19450648+1822422. We obtained its spectrum on 2026-08-25.431 UT with the fiber-fed integral field spectrograph (KOOLS-IFU; Matsubayashi et al. ... 2026-08-25T11:52:59-00:00 https://www.astronomerstelegram.org/?read=18005 A. O. Simon, D. Yu. Rusanova, F.-J. Hambsch, W. Ogloza, N. Karaman, A. Yu. Korosko, P. J. Mikolajczyk, L. Wyrzykowski, K. Kotysz A. O. Simon, D. Yu. Rusanova, F.-J. Hambsch, W. Ogloza, N. Karaman, A. Yu. Korosko, P. J. Mikolajczyk, L. Wyrzykowski, K. Kotysz andrii.o.simon@gmail.com Credentialed by: Andrew Simon (skazhenijandrew@gmail.com) The Astronomer's Telegram ATel18005 Gaia16amd/MASTER OT J203529.80+063652.8/AT 2016dyj was identified by our Outbursts Alerting System as a promising candidate for an SU UMa-type dwarf nova. ... 2026-08-25T09:06:51-00:00 https://www.astronomerstelegram.org/?read=17989 Kenta Taguchi Kenta Taguchi kentagch@kusastro.kyoto-u.ac.jp Credentialed by: Keisuke Isogai (isogai@kusastro.kyoto-u.ac.jp) The Astronomer's Telegram ATel17989 I report the spectroscopic classification of TCP J18251276-2225293 (ATel #17987) as a classical nova. I obtained its spectrum on 2026-08-19.482 UT with the fiber-fed integral field spectrograph (KOOLS-IFU; Matsubayashi et al. ... 2026-08-19T14:56:50-00:00 https://www.astronomerstelegram.org/?read=17981 A. O. Simon, S. A. Simon-Reshetnik, D. Yu. Rusanova, A. V. Grytsai, M. V. Matiushenko, A. Yu. Korosko, P. J. Mikolajczyk, {\L}. Wyrzykowski, K. Kotysz, Y. V. Rudnieva A. O. Simon, S. A. Simon-Reshetnik, D. Yu. Rusanova, A. V. Grytsai, M. V. Matiushenko, A. Yu. Korosko, P. J. Mikolajczyk, {\L}. Wyrzykowski, K. Kotysz, Y. V. Rudnieva andrii.o.simon@gmail.com Credentialed by: Andrew Simon (skazhenijandrew@gmail.com) The Astronomer's Telegram ATel17981 Gaia22dbc/ASASSN-15qa/AT 2022qcr was identified by our Outbursts Alerting System as a promising candidate for an SU UMa-type dwarf nova. Analysis of its long-term light curve revealed, in addition to relatively short outbursts lasting about 4 days, two substantially longer outbursts that are likely superoutbursts. ... 2026-08-17T20:25:07-00:00 https://www.astronomerstelegram.org/?read=17972 Pragati Acharya, Willem Hoogendam, Kirill V. Sokolovsky, Darien Perla, Katie Barnhart, John Worley, Anthony Pearce, Vallia Antoniou, Elias Aydi Pragati Acharya, Willem Hoogendam, Kirill V. Sokolovsky, Darien Perla, Katie Barnhart, John Worley, Anthony Pearce, Vallia Antoniou, Elias Aydi eaydi@ttu.edu Credentialed by: Elias Aydi (eaydi@ttu.edu) The Astronomer's Telegram ATel17972 We report optical spectroscopy and photometry of Nova Tauri 2026 (TCP J05210763+2338194), which was discovered on 2026 Aug 06.41 UTC at unfiltered magnitude of 11.2 by the NMW-TexasTech survey (ATel #17947) and spectroscopically confirmed as a classical nova on 2026 Aug 8.125 (ATel #17950). ... 2026-08-15T23:40:36-00:00 https://www.astronomerstelegram.org/?read=17962 D. Yu. Rusanova, A. O. Simon, A. Yu. Korosko, P. J. Mikolajczyk, L. Wyrzykowski, K. Kotysz, M. V. Matiushenko, V. V. Vasylenko D. Yu. Rusanova, A. O. Simon, A. Yu. Korosko, P. J. Mikolajczyk, L. Wyrzykowski, K. Kotysz, M. V. Matiushenko, V. V. Vasylenko andrii.o.simon@gmail.com Credentialed by: Andrew Simon (skazhenijandrew@gmail.com) The Astronomer's Telegram ATel17962 Gaia24aeg/AT 2024re/ASASSN-18hr is an ER UMa-type dwarf nova characterized by frequent superoutbursts, with a typical superoutburst recurrence time of 55-65 days. ... 2026-08-12T20:16:31-00:00 https://www.astronomerstelegram.org/?read=17951 D. Yu. Rusanova, F.-J. Hambsch, A. O. Simon, P. J. Mikolajczyk, L. Wyrzykowski, K. Kotysz D. Yu. Rusanova, F.-J. Hambsch, A. O. Simon, P. J. Mikolajczyk, L. Wyrzykowski, K. Kotysz andrii.o.simon@gmail.com Credentialed by: Andrew Simon (skazhenijandrew@gmail.com) The Astronomer's Telegram ATel17951 We report the detection of superhumps during a superoutburst in the cataclysmic variable Gaia20ffw/AT2020znz/ASASSN-18jq, which was detected by our Outbursts Alerting System. ... 2026-08-09T08:57:22-00:00 https://www.astronomerstelegram.org/?read=17947 Elias Aydi, Kirill Sokolovsky, Katie Barnhart, Darien Perla, Pragati Acharya, John Worley, Anthony Pearce, Vallia Antoniou, Bassam Debs, Omar Kilo Elias Aydi, Kirill Sokolovsky, Katie Barnhart, Darien Perla, Pragati Acharya, John Worley, Anthony Pearce, Vallia Antoniou, Bassam Debs, Omar Kilo eaydi@ttu.edu Credentialed by: Elias Aydi (eaydi@ttu.edu) The Astronomer's Telegram ATel17947 We report photometric follow-up of the possible Galactic nova TCP J05210763+2338194, which was discovered by the NMW-TexasTech survey on 2026-08-06.4109 UT at an unfiltered magnitude of 11.2. ... 2026-08-07T16:55:31-00:00