[vsnet-alert 26501] MASTER OT J030227.28+191754.5: stage A superhumps, eventually
MASTER OT J030227.28+191754.5: stage A superhumps, eventually The most recent data by Tonny Vanmunster, Tamas Tordai and Itoh-san have recorded emerging ordinary superhumps since 2021 Dec. 30 -- 32 d after the outburst detection! (The longest record, probably related to the large outburst amplitude). The period of stage A superhumps is 0.0616(2) d (2-d baseline). The period of early superhumps is 0.059851(5) d. The corresponding mass ratio is 0.076(10), which will be updated as more observations become available. This value corresponds to a "borderline" period bouncer. List of observers and numbers of measurements: Code Mode Corr SD Obs OKU B -0.401 0.051 1503 KU1 CV -0.427 0.044 19437 Van CV -0.503 0.022 512 KU1 V -0.281 0.038 8153 Ioh C -0.283 0.050 20707 Trt V -0.291 0.030 358 HaC CV -0.242 0.067 262 KU1 Ic 0.012 0.033 109 KU1 Rc -0.051 0.026 119 KU1 B -0.424 0.024 118 Kis C -0.380 0.060 1812 Vih V -0.282 0.032 242 Vih Ic -0.001 0.030 245 Trt CV -0.207 0.031 1440 RFD V -0.173 0.014 175 OKU C 12.103 0.059 1539 GCH CV -0.457 0.018 7
My additional observations : Observer: Filipp Romanov (Russia). Remotely using 0.355-m f/6.2 Schmidt-Cassegrain telescope of Abbey Ridge Observatory (Canada). PNVJ03022732+1917552 20211222.03464 14.486V RFD 0.009 PNVJ03022732+1917552 20211222.03383 14.491V RFD 0.009 PNVJ03022732+1917552 20211222.03300 14.485V RFD 0.010 PNVJ03022732+1917552 20211222.03216 14.507V RFD 0.011 PNVJ03022732+1917552 20211222.03134 14.470V RFD 0.009 PNVJ03022732+1917552 20211222.03052 14.519V RFD 0.009 PNVJ03022732+1917552 20211222.02970 14.489V RFD 0.011 PNVJ03022732+1917552 20211222.02879 14.502V RFD 0.010 PNVJ03022732+1917552 20211222.02796 14.479V RFD 0.008 PNVJ03022732+1917552 20211222.02715 14.481V RFD 0.007 PNVJ03022732+1917552 20211222.02633 14.477V RFD 0.009 PNVJ03022732+1917552 20211222.02551 14.490V RFD 0.011 PNVJ03022732+1917552 20211222.02470 14.481V RFD 0.013 PNVJ03022732+1917552 20211222.02388 14.491V RFD 0.008 PNVJ03022732+1917552 20211222.02304 14.524V RFD 0.010 PNVJ03022732+1917552 20211222.02222 14.499V RFD 0.011 PNVJ03022732+1917552 20211222.02140 14.474V RFD 0.012 PNVJ03022732+1917552 20211222.02057 14.479V RFD 0.008 PNVJ03022732+1917552 20211222.01975 14.478V RFD 0.010 PNVJ03022732+1917552 20211222.01892 14.494V RFD 0.011 PNVJ03022732+1917552 20211222.01811 14.453V RFD 0.011 PNVJ03022732+1917552 20211222.01729 14.465V RFD 0.011 PNVJ03022732+1917552 20211222.01647 14.460V RFD 0.010 PNVJ03022732+1917552 20211222.01565 14.478V RFD 0.011 PNVJ03022732+1917552 20211222.01483 14.492V RFD 0.007 PNVJ03022732+1917552 20211222.01402 14.468V RFD 0.011 PNVJ03022732+1917552 20211222.01319 14.471V RFD 0.009 PNVJ03022732+1917552 20211222.01238 14.503V RFD 0.012 PNVJ03022732+1917552 20211222.01156 14.495V RFD 0.010 PNVJ03022732+1917552 20211222.01074 14.487V RFD 0.014 PNVJ03022732+1917552 20211222.00992 14.479V RFD 0.009 PNVJ03022732+1917552 20211222.00911 14.460V RFD 0.011 PNVJ03022732+1917552 20211222.00829 14.494V RFD 0.009 PNVJ03022732+1917552 20211222.00746 14.475V RFD 0.009 PNVJ03022732+1917552 20211222.00664 14.475V RFD 0.010 PNVJ03022732+1917552 20211222.00582 14.459V RFD 0.009 PNVJ03022732+1917552 20211222.00500 14.464V RFD 0.010 PNVJ03022732+1917552 20211222.00418 14.472V RFD 0.012 PNVJ03022732+1917552 20211222.00336 14.441V RFD 0.010 PNVJ03022732+1917552 20211222.00253 14.462V RFD 0.009 PNVJ03022732+1917552 20211222.00171 14.492V RFD 0.010 PNVJ03022732+1917552 20211222.00088 14.492V RFD 0.012 PNVJ03022732+1917552 20211222.00006 14.464V RFD 0.009 PNVJ03022732+1917552 20211221.99924 14.448V RFD 0.015 PNVJ03022732+1917552 20211221.99843 14.472V RFD 0.008 PNVJ03022732+1917552 20211221.99760 14.453V RFD 0.014 PNVJ03022732+1917552 20211221.99677 14.474V RFD 0.008 PNVJ03022732+1917552 20211221.99596 14.460V RFD 0.008 PNVJ03022732+1917552 20211221.99514 14.479V RFD 0.010 PNVJ03022732+1917552 20211221.99432 14.465V RFD 0.014 PNVJ03022732+1917552 20211221.99351 14.443V RFD 0.015
I also detected the superhumps of AT 2021afpi with period 0.06 d. I reported my unfiltered CCD observations (time-resolved photometry): http://ooruri.kusastro.kyoto-u.ac.jp/mailarchive/vsnet-obs/94668
participants (2)
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Filipp Romanov -
Taichi Kato