[vsnet-alert 21562] Re: TCP J05074264+2447555: new transient (10.8 mag) in Taurus

[francois teyssier]

Paolo Berardi got a spectrum of the event

http://spectro-aras.com/forum/viewtopic.php?f=5&t=1888

Classical star, classification ~ F5

F. Teyssier






Le 31/10/2017 à 22:56, Patrick Schmeer pasc1312-aavso at yahoo.de via 
vsnet-alert a écrit :
> TCP J05074264+2447555  (CV:)
>
> RA 05h07m42.64s, DEC +24°47'55.5" (J2000.0)
>
> 2017 Sept. 2.762 UT, 13.0 mag
> 2017 Oct. 25.688 UT, 11.7 mag
> 2017 Oct. 31.734 UT, 10.8 mag
> (all CCD, unfiltered)
>
> Discoverer: Tadashi Kojima, Gunma-ken, Japan
>
> 2017 10 31.734 UT
> Discovered by T. Kojima, Gunma-ken, Japan, who found
> this on three frames taken using Canon EOS 6D + 135-mm
> f3.2 lens with the limiting mag.= 13.0. Star is visible
> on 2017 Sept. 2.762 (mag.= 13.0) and on Oct. 25.688
> (mag.= 11.7) UT. Also this star is cataloged on USNO-A2
> as mag.= B14.7 and R13.6. An image at
> http://www.oaa.gr.jp/~oaacs/image/TCPinTau2017.jpg
>
> Follow up-reports:
> http://www.cbat.eps.harvard.edu/unconf/followups/J05074264+2447555.html
>
> Spectroscopy and time-resolved photometry are urgently
> required.
>
> Clear skies,
> Patrick
>
>