New bright CV with outburst amplitude 7m
ATel #4593; D. Denisenko, P. N. Tiurina, E. Gorbovskoy, N. Tiurina, V. Lipunov, V. Kornilov, A. Belinski, N. Shatskiy, V. Chazov, A. Kuznetsov, D. Zimnukhov (Moscow State University, SAI), V. Krushinsky, I. Zalozhnih, A. Popov, A. Bourdanov, A. Punanova (Ural Federal University), K. Ivanov, S. Yazev, N. Budnev, E. Konstantinov, O. Chuvalaev, V. Poleshchuk, O. Gress (Irkutsk State University), A. Parkhomenko, A. Tlatov, D. Dormidontov, V. Senik (Kislovodsk solar station of the Pulkovo observatory RAS), V. Yurkov, Y. Sergienko, D. Varda, E. Sinyakov (Blagoveshchensk Educational University), P. Podvorotny, S. Shurpakov, V. Shumkov, (MASTER team members), H. Levato, C. Saffe (ICATE), C. Mallamaci, C. Lopez and F. Podest (Observatorio Astronomico Felix Aguilar; OAFA)
on 21 Nov 2012; 06:26 UT
Credential Certification: Vladimir Lipunov (lipunov2007@gmail.com)
Subjects: Optical, Cataclysmic Variable
MASTER OT J082049.30+640307.6 - new bright CV with outburst amplitude 7m
MASTER-Amur auto-detection system discovered OT source at (RA, Dec) =
08h 20m 49.30s +64d 03m 07.6s on 2012-11-20.65846 UT. The OT
unfiltered magnitude is 14.2m (limit 18.5m). The OT is seen in 2
images. There is no minor planet at this place.
We have reference image without OT on 2011-02-08.59435 UT with
unfiltered magnitude limit 19.4m. The discovery and reference images
are available at: http://master.sai.msu.ru/static/OT/082049.30640307.6.png
There is nothing at this position in 2MASS, USNO-B1.0, GSC 2.3.2,
GALEX, 1RXS and GCVS catalogs, as well as in AAVSO VSX. No previous
outbursts were detected by CRTS. This area of sky is not covered by
SDSS and NEAT. The faint star (magnitude B~21) is visible on blue
Palomar plates at the following position (J2000.0): 08 20 49.11 +64 03
09.2 (1955-01-28), 08 20 49.28 +64 03 08.4 (1997-02-05). Comparison of
1955 and 1997 POSS plates is posted at http://master.sai.msu.ru/static/OT/J082049+640307-DSS-Blue.jpg
Based on the amplitude of variability (~7m) and proper motion of the
progenitor we conclude that MASTER OT J082049.30+640307.6 is a new
cataclysmic variable of UGSU or UGWZ type in outburst.
Follow up observations are required.
Global MASTER Robotic Net
