Last updated 12:47 on 24 February 2021 (All objects mentioned in this section are in the International Variable Star Index; additionally, VSX links have been given for selected cataclysmic variables) 20210223 HS Vir CRTS J084358.1+425037 MASTER OT J193922.39+665346.0 SDSS J153634.42+332851.9 20210222 BI Ori ASASSN-13bj Current superoutbursts (since ...) IY UMa (20210218, UGSU, eclipsing, orbital period 0.07390897 d (106.42892 min)) DDE 163 (20210217, UGSU:, time-resolved photometry is required) V496 Aur (20210209, UGSU) ASASSN-15kf (20210209, AM CVn star) DDE 31 (20210209, UGSU) FL Lyn (20210207, UGSU) V418 Ser (20210201, EI Psc star) SDSS J161027.61+090738.4 # (20210131, UGWZ, first recorded outburst since 1998 and 2009) ASASSN-14gg (20210130) PU CMa (20210121, UGSU) CT Hya (20210119, UGSU) VX For # (20210117, UGWZ, time-resolved photometry is urgently required) NSV 4618 (20210112, UGSU, eclipsing) HV Aur (20210109, UGSU) GZ Cnc (20210108, UGSU) TCP J09370380+1657350 # (20210107, UGWZ, time-resolved photometry is urgently required) MN Lac : (20210106, UGSU) ASASSN-21aa #: (20210101, time-resolved photometry is required) ASASSN-20qq #: (20210101, time-resolved photometry is required) ASASSN-15ql (20201230, UGSU) ASASSN-20qp : (20201230, UGSU:, time-resolved photometry is required) DDE 39 = 1RXS J040253.8+435553 (20201229; UGSU, time-resolved photometry is required) V713 Cep (20201224; eclipsing, Porb= 0.085418432 d, time-resolved photometry is urgently required)CRTS J004500.3+222708 : (20201226, UGSU, time-resolved photometry is required) MASTER OT J221811.12+654219.9 (20201222, UGSU) ASASSN-20pv # (20201215, AM CVn star?) CC Scl (20201209; UGSU, intermediate polar) ASASSN-14hq (20201204) ASASSN-17gf (20201130, UGSU, EI Psc star, time-resolved photometry is encouraged) Z Cam-type dwarf novae at standstill IM Eri (since 20201130; IW And star) # indicates a noteworthy or unusual outburst : indicates confirmation required 'Activity at a Glance' is gleaned from observations reported to AAVSO MyNewsFlash, BAAVSS-Alert, CVnet-Outburst, VSObs-share and VSNET-outburst. We sincerely thank all the observers who contribute timely observations and reports of activity to these email lists. RECENT PAPERS ON CVs 16 October 2020 For new papers on CV's see arxiv.org astro-ph Joseph Patterson (1), Jonathan Kemp (2), Berto Monard (3), Gordon Myers (3), Enrique de Miguel (4), Franz-Josef Hambsch (3), Paul Warhurst (5), Robert Rea (3), Shawn Dvorak (3), Kenneth Menzies (3), Tonny Vanmunster (3), George Roberts (3), Tut Campbell (3), Donn Starkey (3), Joseph Ulowetz (3), John Rock (3), Jim Seargeant (3), James Boardman (3), Damien Lemay (3), David Cejudo (3) ((1) Columbia Univ., (2) Middlebury Coll., (3) Center for Backyard Astrophysics, (4) Univ. de Huelva, (5) Univ. of Auckland) E.J. Harvey, M.P. Redman, P. Boumis, S. Akras, K. Fitzgerald, S. Dulaimi, S.C. Williams, M.J. Darnley, M.C. Lam, 1 M. Kopsacheilli, S. Derlopa Mariko Kimura, Keisuke Isogai, Taichi Kato, Naoto Kojiguchi, Yasuyuki Wakamatsu, Ryuhei Ohnishi, Yuki Sugiura, Hanami Matsumoto, Sho Sumiya, Daiki Ito, Kengo Nikai, Katsura Matsumoto, Sergey Yu. Shugarov, Natalia Kathysheva, Hiroshi Itoh, Pavol A. Dubovsky, Igor Kudzej, Hiroshi Akitaya, Kohei Oide, Takahiro Kanai, Chihiro Ishioka, Yumiko Oasa, Tonny Vanmunster, Arto Oksanen, Tamás Tordai, Katsuhiro L. Murata, Kazuki Shiraishi, Ryo Adachi, Motoki Oeda, Yutaro Tachibana, Seiichiro Kiyota, Elena P. Pavlenko, Kirill Antonyuk, Oksana Antonyuk, Nikolai Pit, Aleksei Sosnovskij, Julia Babina, Alex Baklanov, Koji S. Kawabata, Miho Kawabata, Tatsuya Nakaoka, Masayuki Yamanaka, Kiyoshi Kasai, Ian Miller, Stephen M. Brincat, Wei Liu, Mahito Sasada, Daisaku Nogami Han Zhongtao, Boonrucksar Soonthornthum, Qian Shengbang, Fang Xiaohui, Wang Qishan, Zhu Liying, Dong Aijun, Zhi Qijun U. Munari, S. Moretti, A. Maitan Christopher Lloyd, Lewis M. Cook, Seiichiro Kiyota, Hanjie Tan, Di Hu, Wei Shi, Mi Zhang, Shenwei Zhang, Xiaowei Zhang, Jingyuan Zhao, Guoyou Sun, Xing Gao, David Boyd D. M. Hewitt, M. L. Pretorius, P. A. Woudt, E. Tremou, J. C. A. Miller-Jones, C. Knigge, N. Castro Segura, D. R. A. Williams, R. P. Fender, R. Armstrong, P. Groot, I. Heywood, A. Horesh, A. J. van der Horst, E. Koerding, V. A. McBride, K. P. Mooley, A. Rowlinson, B. Stappers, R.A.M.J. Wijers John R. Thorstensen, Mokhine Motsoaledi, David A. H. Buckley, Patrick Woudt, Brian Warner Susanne M Hoffmann, Nikolaus Vogt M. D. Stritzinger (Aarhus), F. Taddia (Aarhus), M. Fraser (Dublin), T. M. Tauris (Aarhus), C. Contreras, S Drybye, L. Galbany, S. Holmbo, N. Morrell, A. Pastorello, M. M. Phillips, G. Pignata, L. Tartaglia, N.B. Suntzeff, J. Anais, C. Ashall, E. Baron, C. R. Burns, P. Hoeflich, E. Y. Hsiao, E. Karamehmetoglu, T. J. Moriya, G. Bock, A. Campillay, S. Castellon, C. Inserra, C. Gonzalez, P. Marples, S. Parker, D. Reichart, S. Torres-Robledo, D. R. Young O. Segura Montero, S.H. Ramirez, J. Echevarria Mariko Kimura, Yoji Osaki, Taichi Kato, Shin Mineshige Raymundo Baptista, Eduardo Wojcikiewicz Susanne M Hoffmann, Nikolaus Vogt, Philipp Protte Taichi Kato, Yasuyuki Wakamatsu, Naoto Kojiguchi, Mariko Kimura, Ryuhei Ohnishi, Keisuke Isogai, Keito Niijima, Tomohiro Yoshitake (Kyoto U), Yuki Sugiura, Sho Sumiya, Daiki Ito, Kengo Nikai, Hanami Matsumoto, Katsura Matsumoto, Tonny Vanmunster, Franz-Josef Hambsch, Hiroshi Itoh, Julia V. Babina, Oksana I. Antonyuk, Alex V. Baklanov, Elena P. Pavlenko, Berto Monard, Shawn Dvorak Susanne M. Hoffmann E.Pavlenko, K. Niijima, P. Mason, N.Wells, A. Sosnovskij, K. Antonyuk, A. Simon, N. Pit, C. Littlefield, H. Itoh, S. Kiyota, T.Tordai, P. Dubovsky, T.Vanmunster, G. Stone, T. Kato, A. Sergeev, V. Godunova, E. Lyumanov, O. Antonyuk, A. Baklanov, Ju. Babina, K. Isogai, Ya. Romanyuk, V.Troianskyi, V. Kashuba J. Casares, T. Muñoz-Darias, D. Mata Sanchez, P.A. Charles, M.A.P. Torres, M. Armas Padilla, R.P. Fender, J. Garcia-Rojas G. J. M. Luna (1,2), T. Nelson (3), K. Mukai (4,5), J. L. Sokoloski (6,7) ((1) CONICET-Universidad de Buenos Aires, Instituto de Astronomía y Física del Espacio (IAFE), (2) Universidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales, Buenos Aires, Argentina, (3) Department of Physics and Astronomy, University of Pittsburgh, (4) CRESST and X-ray Astrophysics Laboratory, NASA Goddard Space Flight Center, (5) Department of Physics, University of Maryland, Baltimore County, (6) Columbia Astrophysics Lab, Columbia University, (7) Large Synoptic Survey Telescope Corporation) Bradley E. Schaefer, David Boyd, Geoffrey C. Clayton, Juhan Frank, Christopher Johnson, Jonathan Kemp, Ashley Pagnotta, Joseph O. Patterson, Miguel Rodriguez Marco, Limin Xiao |
