[vsnet-alert 23865] MGAB-V1111 outburst

[Denis Denisenko d.v.denisenko@gmail.com via vsnet-alert]

This SU UMa-type dwarf nova in Cassiopeia is in its first outburst since
the start of monitoring with the Open University's COAST telescope from
2019 Nov. 29.

MGAB-V1111 = IPHAS J233843.55+571720.0
  2020013.9111   <195CV  COAST
  2020015.8762   <195CV  COAST  Last non-detection
  2020017.8429  15.64CV  COAST  Outburst!

Gaia DR2 position (J2000.0): 23 38 43.54 +57 17 20.0

Color-combined DSS chart with 10'x10' FOV:
http://scan.sai.msu.ru/~denis/MGAB-V1111-compstars.jpg

Three reference stars are marked with their V magnitudes from APASS DR9. I
have used 142 as a reference star and 158 as a check star.

Follow up observations are strongly recommended to see if this outburst is
a superoutburst. Light curve from ZTF DR2 with the previous superoutburst
in July-August 2018:
http://scan.sai.msu.ru/~denis/MGAB-V1111-ZTF-DR2-LC.gif

Denis Denisenko