[vsnet-alert 21955] NN Cam outburst

Denis Denisenko d.v.denisenko@gmail.com via vsnet-alert vsnet-alert at ooruri.kusastro.kyoto-u.ac.jp
Fri Mar 9 20:00:07 JST 2018

This SU UMa-type dwarf nova (formerly known as NSV 1485) is in
outburst on the recent image from Open University's COAST telescope on
March 08.0 UT and rising in ASAS-SN data 5 hours later.

NN Cam
  20180306.249  <154V   ASAS-SN (Shappee et al., 2014; Kochanek et al., 2017)
  20180308.005  13.72CV COAST  Outburst!
  20180308.220  13.20V  ASAS-SN

Note: ASAS-SN data are contaminated by V=15.3 star 8" East of NN Cam.
When the variable is at V=13.2 level, the contribution from the
neighbor is about 0.15m.

Previous superoutbursts in ASAS-SN data were detected 190 and 450 days ago:

  20170830.528  13.15V  ASAS-SN
  20170831.554  13.22V  ASAS-SN
  20170903.528  13.56V  ASAS-SN
  20170906.511  14.05V  ASAS-SN

  20161213.413  13.10V  ASAS-SN
  20161222.465  14.23V  ASAS-SN

The current outburst may be a superoutburst as well.

Denis Denisenko

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