[vsnet-alert 23502] Re: AT 2019olv - bright (14m) large-amplitude object in Corona Australis

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

I have obtained BVR images of AT 2019olv remotely with iTelescope.Net
T17 on Aug. 26 at 12:38-12:49 UT. The object is blue - likely a dwarf
nova.

AT 2019olv
  20190826.527  14.91R  iTelescope.Net T17
  20190826.530  14.70V  iTelescope.Net T17
  20190826.533  14.44B  iTelescope.Net T17

Reference star used with magnitudes from APASS:
19 13 04.51 -41 28 11.6
V=13.141+/-0.086 B=13.764 r=12.934+/-0.022

Color-combined iTelescope image on Aug. 26.53 UT (10'x10' FOV):
http://scan.sai.msu.ru/~denis/AT2019olv-20190826-T17-RGB.jpg

Large outburst amplitude, rapid fading - may be an AM CVn (IBWD)
object. Time series are encouraged.

Denis Denisenko

On Mon, Aug 26, 2019 at 9:12 AM Denis Denisenko <d.v.denisenko at gmail.com> wrote:
>
> AT 2019olv
>   20190823.0655  >172g   ASAS-SN
>   20190823.2469  >167g   ASAS-SN
>   20190823.8734  15.44g  ASAS-SN
>   20190825.0765  13.85g  ASAS-SN