[vsnet-alert 22175] Re: SDSS J141118.31+481257.6 outburst

Keisuke Isogai isogai at kusastro.kyoto-u.ac.jp
Sun May 20 10:29:41 JST 2018

The object is an AM CVn star which has a long orbital period of 46min.
The Pan-STARRS magnitude is g=19.44, so the outburst amplitude is
7 mag. Judging from the large outburst amplitude and the expected low
mass ratio, the object may show a WZ Sge-type superoutburst with
early superhumps. Further observations are strongly encouraged.

On 2018年05月19日 14:30, Hiroyuki Maehara wrote:
> Kojima-san reported an outburst of SDSS J141118.31+481257.6.
> Time-resolved photometry is encouraged.
> object                  YYYYMMDD(UT)    mag      code
> SDSSJ141118.31+481257.6 20180514.494  <130c      TKo
> SDSSJ141118.31+481257.6 20180519.514   124c      TKo
> SDSSJ141118.31+481257.6 20180519.599   127c      TKo
> Observer: Tadashi Kojima (Gunma, Japan)
> Instruments: f.l.=200mm lens + Canon EOS 6D (May 19)
>               f.l.=135mm lens + Canon EOS 6D (May 14)

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