[vsnet-alert 12161] Re: V4641 Sgr active
Masayuki Yamanaka
myamanaka at hiroshima-u.ac.jp
Fri Sep 10 23:36:30 JST 2010
Photometry of V4641 Sgr
We performed the photometric observations of V4641 Sgr using
an optical image HOWPol attached to Kanata telescope at HHAO.
We confirmed the magnitude of V4641 Sgr as 13.5 mag in V-band.
The object would photometrically be in quiescent state.
SGRV4641 20100910.490527 13.5V
SGRV4641 20100910.492703 13.3R
SGRV4641 20100910.494716 13.1I
Yamanaka, M., Itoh, R., Komatsu, T., Sato, H. (Hiroshima Univ.)
Arai, A.(Kyoto Sangyo Univ.)
2010/9/10 Hiroyuki Maehara <mira at cetus-net.org>
> The object was at normal brightness a few minutes before the outburst
> detection by Stubbings.
>
> object YYYYMMDD(UT) mag code
> SGRV4641 20100909.42550 13.51V Mhh.VSOLJ
> SGRV4641 20100910.43697 13.45V Mhh.VSOLJ
>
> --
> Hiroyuki Maehara
> mira at cetus-net.org
>
> On Fri, Sep 10, 2010 at 21:27:44, Rod Stubbings wrote:
> > V4641 Sgr appears to be above its normal optical brightness as shown by
> the
> > observations tonight. Clouds prevented further obs.
> >
> > SGRV4641 100910.439 124 Stu.RASNZ
> > SGRV4641 100910.443 127 Stu.RASNZ
> > SGRV4641 100910.449 127 Stu.RASNZ
> > SGRV4641 100910.451 126 Stu.RASNZ
> > SGRV4641 100910.453 127 Stu.RASNZ
> > SGRV4641 100910.458 124 Stu.RASNZ
> > SGRV4641 100910.485 125 Stu.RASNZ
> >
> > Regards,
> > Rod.
> >
> > ________________________________
> >
> > Rod Stubbings,
> > Tetoora Observatory,
> > Tetoora Road,
> > Vic, Australia.
> > stubbo at sympac.com.au
> > http://rodstubbingsobservatory.wordpress.com/
> >
> > _________________________________
>
--
Masayuki Yamanaka (D3)
Department of Physical Science,
Hiroshima University
E-mail:myamanaka at hiroshima-u.ac.jp <E-mail%3Amyamanaka at hiroshima-u.ac.jp>
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