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THE ASTRONOMER Electronic Circular No 2921      2013 Jun 05 14.21UT
Ed:Guy M Hurst, 16,Westminster Close, Kempshott Rise,  Basingstoke,
Hants, RG22 4PP,England.Telephone/FAX(01256)471074Int:+441256471074
INTERNET: GUY@TAHQ.DEMON.CO.UK      Backup: gmh@wdcc1.bnsc.rl.ac.uk
WORLD WIDE WEB                         http://www.theastronomer.org
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NOVA SCORPII 2013 
Koichi Nishiyama and Fujio Kabashima, Japan, report their discovery of a
possible magnitude 11.1 nova in Scorpius on unfiltered 40-s CCD frames of
2013 June 3.614UT (limiting magnitude 13.5) using a 105-mm f/4 camera lens +
CCD. Confirmatory images were obtained on June 3.6728 (limiting magnitude
17.4) using a 0.40-m f/9.8 reflector + CCD.

It is located at RA 17h 33m 59.43s DEC -36 06' 21.6" (2000).  Additional CCD
magnitudes for the variable:  June 3.589, I_c = 10.39 (Kiyota, Japan; 85-mm
f/2 camera lens + CCD); 3.628, 11.9 (Takao, Japan; 100-mm-f.l. f/4 camera
lens + CCD); 4.480, 13.5 V (Terry Bohlsen, NSW, Australia); 

Ernesto Guido, Italy has e-mailed TAHQ on behalf of himself and Nick Howes
to report imaging on June 3.7UT with itelescope network 0.50-m f/6.8
astrograph gave position end figures 59s.44, 20".7 and magnitude 11.5
(unfiltered).

Christian Buil, France, reports a spectrum on June 3.960UT with an Alpy 600
spectrograph (R =600) on a 0.2-m telescope shows a very reddened object,
with an intense H-alpha emission line (equivalent width 2.9 nm; FWHM = 1200
km/s), indicating a probable nova.

Charts: Charts for N Sco 2013 may be created using the AAVSO Variable Star
Plotter (VSP) at http://www.aavso.org/vsp.

Guy M Hurst