[vsnet-outburst 25047] Re: [vsnet-alert 24221] SBS 1108+574 superoutburst (apparently since Apr. 18)

Sat Apr 25 19:20:49 JST 2020

Recent data by Mitsutaka Hiraga:

object         YYYYMMDD(UT)   mag      code
SBS1108+574    20200421.672   150c     Hrm.VSOLJ
SBS1108+574    20200422.560   156c     Hrm.VSOLJ
SBS1108+574    20200423.469   156c     Hrm.VSOLJ
SBS1108+574    20200424.567   155c     Hrm.VSOLJ

Observer: M. Hiraga (Yamaguchi, Japan)
Instruments: 20cmL + PENTAX K-5IIs

On Sat, Apr 25, 2020 at 08:43:53, Patrick Schmeer pasc1312-aavso at yahoo.de via vsnet-alert wrote:
> SBS 1108+574  (UGSU, EI Psc star)
> https://www.aavso.org/vsx/index.php?view=detail.top&oid=281975
> 
> Recent ASAS-SN Sky Patrol (Shappee et al. 2014ApJ...788...48S
> and Kochanek et al. 2017PASP..129j4502K) light curve and data:
> https://asas-sn.osu.edu/light_curves/2c7421e2-984b-486d-9480-9f6133887126
> 
> ZTF light curve:
> https://lasair.roe.ac.uk/object/ZTF17aaajmqk/
> 
> A detection (16.2 mag, probably near the limit) was reported
> by Mitsutaka Hiraga for Apr. 18.560 UT (vsnet-obs 91513).
>  
> Time-resolved photometry is encouraged.
>  
> Clear skies,
> Patrick