[vsnet-alert 22177] Re: SDSS J141118.31+481257.6 outburst

[Gianluca Masi]

Dear All,

this transient was shortly observed by G. Masi (virtual Telescope Project) and  
M. Schwartz (Tenagra Observatories) from Arizona, for about one hour, just  
before dawn.

We see a small (0.05 mag) amplitude modulation. Data sent to Kyoto for further  
analysis.

Sincerely
Gianluca Masi

Il 20/05/2018 03:29, Keisuke Isogai ha scritto:
> 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)
>>
> 
>