[vsnet-outburst 22778] IM Eri campaign

[Taichi Kato]

IM Eri campaign

   I would like to call a campaign for time-series
photometry of IM Eri, which has recently been
identified as a peculiar Z Cam star.
(vsnet-chat 8119)
http://ooruri.kusastro.kyoto-u.ac.jp/mailarchive/vsnet-chat/8119

   The object is now IW And-type (anomalous Z Cam) state
and is currently around the peak before (an expected)
deep fading.

ASAS-SN data:
https://asas-sn.osu.edu/light_curves/13bb7e36-d245-490c-bbeb-80edbdde0865

   Observations from now on will test whether negative
superhumps are present in this state (this object
is a negative superhumper during its long standstill
in 2012, http://adsabs.harvard.edu/abs/2013MNRAS.435..707A).

   For northern observers, there is a competition
with EG Cnc, but if you have a small second telescope,
please observe IM Eri, too.  The object is bright
enough (around 12 mag) and is an easy target.
Porb = 0.14563 d.