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Possible Nova Candidate detected by MASTER

ATel #4202; E. Gorbovskoy, D. Denisenko, P. Balanutsa, V. Lipunov, N. Tiurina, V. Kornilov, A. Belinski, N. Shatskiy, V. Chazov, A. Kuznetsov, D. Zimnukhov, D. Gareeva (Moscow State University, SAI) , H. Levato, C. Saffe (ICATE), C. Mallamaci, C. Lopez and F. Podest (Observatorio Astronomico Felix Aguilar; OAFA) V. Krushinsky, I. Zalozhnih, A. Popov (Ural State 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), V. Shumkov, P. Podvorotniy, S. Shurpakov (MASTER team members)
on 22 Jun 2012; 18:03 UT
Credential Certification: Vladimir Lipunov (lipunov2007@gmail.com)

Subjects: Optical, Request for Observations, Cataclysmic Variable, Nova

Referred to by ATel #: 4221

MASTER-ICATE auto-detection system discovered OT source at (RA, Dec) = 20h 08m 45.06s -35d 54m 03.1s on 2012-06-21 08:01:53.343 UT. Typical astrometric error is about 6 arcsec. The OT unfiltered magnitude is 11.8m (limit 13.0m).

Object was detected by MASTER-VWF very wide field camera (D=70 mm f/1.2 + 11 Mpix CCD, scale 22"/pixel) located in Argentina. It is visible on 21 combined images with 300-sec effective exposures. We have reference image without OT on 2012-05-20.212 UT with unfiltered magnitude limit 13.0m.

The nearest star in USNO-B1.0 and 2MASS catalogues is located in 14" from the possible Nova position: 2MASS 20084438-3554143 (J=16.09 H=15.64 K=15.48) = USNO-B1.0 0540-0789553 (B2=18.12 R2=17.09 I=17.10). There are no other stars on DSS plates up to 20m. The Galactic latitude is -30 degrees. We suggest the OT is possible Nova.

There is nothing at this position in 1RXS and GALEX catalogues, as well as in GCVS and AAVSO VSX.

Spectral observations are required.

The discovery and reference images are available at: http://master.sai.msu.ru/static/OT/PNVJ20084506-3554031-MASTER.jpg

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