PNV J17422408-2053088: possible nova (11.1 mag) in Ophiuchus

Association Francaise des Observateurs d'Etoiles Variables (AFOEV)
Thu, 08/09/2018 - 06:46

PNV J17422408-2053088 (N:)

Discovery details:
R.A. 17h42m24.08s, Decl. -20°53'08.8" (J2000.0)
2018 August 8.9596, 11.1 mag (unfiltered)
Discoverers: Cristóvão Jacques, João Ribeiro de Barros, Eduardo Pimentel, Paulo Renato Holvorcem (Brazilian Transient Search)

2018 08 9.112 UT
Discovered by C. Jacques, J. Barros, E. Pimentel, P. Holvorcem, on behalf of the Brazilian Transient Search - BraTS - at SONEAR Observatary, Oliveira, Brazil with three frames with 10 seconds exposure using an astrograph 11"f/2.2 + CCD camera under limiting mag = 16.5. Nothing is visible at this location on the previous frame (limit mag = 16.0) taken 2018 July. 8.991 UT.

2018 08 09.24 UT
The Pan-STARRS1 source PSO J174224.016-205308.866 (position end figures 24.013s, 08.90"; i= 20.17 mag) is 0.9" away from the reported position of the transient. Latest available ASAS-SN Sky Patrol observation (Shappee et al. 2014ApJ...788...48S and Kochanek et al. 2017PASP..129j4502K): 2018 Aug. 8.273 UT, fainter than Vmag. 16.0. V-band data at…. --- Patrick Schmeer (Saarbrücken-Bischmisheim, Germany)

*** Spectroscopy, precise astrometry, and multiband photometry are urgently required. ***

Clear skies,

Magyar Csillagaszati Egyesulet, Valtozocsillag Szakcsoport (Hungary) (MCSE)
Still brightening? - 10.50V on 09.3882 August

PNV J17422408-2053088 was 10.50V (-+0.025) on 09.3882 August 2018 with a 2x60s CCD images taken remotely with a 0.43m reflector at Siding Spring, Australia.

File upload
American Association of Variable Star Observers (AAVSO)
AAVSO Alert Notice 647 on N Oph 2018 No. 3

AAVSO Alert Notice 647 announces the discovery of and reports on PNV J17422408-2053 = N Oph 2018 No. 3. Please see the notice for details and observing instructions.

Many thanks, and Good observing,

Elizabeth O. Waagen, AAVSO HQ