[vsnet-alert 15973] Re: Next HST observations: HS2214+2845 (V513 Peg) & OT J213806.6+261957

Arto Oksanen arto.oksanen at jklsirius.fi
Sat Jul 13 16:29:22 JST 2013

Hi Brian,

The SE star? Are you sure?  I have been measuring the NW star with 5 arc
sec radius aperture. The NW star outbursted, not the SE star of the close

This is the correct identification:


2013/7/12 Brian Skiff <bas at lowell.edu>

>      For what it's worth, comparison of POSS-I plate-scans
> with recent images clearly show that the cv has modest
> proper motion, and is presently the southeastern of the
> optical pair.  The SDSS DR9 astrometry indicates a
> separation of 2".5 at epoch 2009.8, which is increasing.
> \Brian
> >
> > OTJ213806.6+261957 was discovered as a bright WZ Sge
> > dwarf nova in May 2010, reaching V~8.5, the only other
> > outburst found on historic plates was in 1942. This CV has
> > a nearby (~1.5") visual companion, a red / low-mass star,
> > that is somewhat brighter than the CV in the V-band,
> > whereas the CV wins at shorter wavelengths (U-band,
> > and in the ultraviolet where HST will observe).
> >
> > You will probably struggle to resolve the two stars, thus
> > please report the combined magnitude for both, which is
> > V~15 when OTJ213806.6+261957 is in quiescence.

Arto Oksanen
arto.oksanen at jklsirius.fi
Muurame, Finland

"In a world where I feel so small, I can't stop thinking big."

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