PNV J17592412+2520317 2014 04 09.7551* 17 59 24.12 +25 20 31.7 12.8 U Her 9 0
2014 04 10
Prediscovery Rc photometry of this object by B. Dintinjana, from images obtained in the course of Crni Vrh Observatory Wide Field Sky Survey with the 105 mm f.l., f/4 camera lens + AP16E CCD + Rc photometric filter by B. Mikuz, S. Maticic and J. Skvarc. For each night, photometry was performed on several co-added 60 second consecutive exposures. Object was not detected on Mar. 29 and 30, but is clearly visible on Apr. 7 and 8 co-added images posted at http://www.observatorij.org/vstars/PNVHer/PNHer2014.jpg --2014 Mar 29.979UT, Rc = <13.7; Mar 30.967, Rc = <14.0; Apr 07.034, Rc = 13.2 +/- 0.2; Apr 08.047, Rc = 13.7 +/- 0.3. B. Dintinjana and H. Mikuz, Crni Vrh Observatory.
2014 04 10.944
This transient was observed on 2014 04 10.944 by Gianluca Masi, Francesca Nocentini and Patrick Schmeer, remotely using the 17"-f/6.8 corrected Dall-Kirkham robotic unit part of the Virtual Telescope Project facility, at Bellatrix Astronomical Observatory in Ceccano, Italy. 40-seconds exposures, unfiltered, show the source at mag. 13.0 (R mags for the reference stars from UCAC-4). We also performed astrometry, getting the following end figures: 24.12; 32.3 (J2000.0, mean residuals of 0.2" on both axes).
2014 04 09.755
Vladimir Lipunov reports the discovery of a possible Nova by Vladimir Vladimirov using MASTER-Amur robotic telescope (0.40-m f/2.5 reflector + 4Kx4K CCD) and auto-detection system on the unfiltered survey images (60-sec exposures, limit 18.0m) obtained on 2014-04-09.755 UT. The new object (unfiltered magnitude 12.8) is located at R.A. = 17h59m24s.12, +25o20'31".7 (J2000.0). The object is seen in 9 images. We have reference image without OT on 2012-08-20.593 UT with unfiltered magnitude limit 18.3m. The object was not present on MASTER-Kislovodsk images obtained on 2014-03-16.024 UT (limit 18.0m). MASTER-Amur discovery and reference images are available at: http://master.sai.msu.ru/static/OT/175924.12252031.7.png (ref. ATel 6059, http://www.astronomerstelegram.org/?read=6059 )
2014 04 10.984
P. Berardi, C. Buil, R. Leadbeater (ARAS Spectroscopy Group), obtained low-resolution optical spectra of this transient. The blue continuum with a relatively faint emission of H-alpha suggest that the object could be a dwarf nova outburst of a WZ Sge cataclysmic. P. Berardi spectrum (Apr, 10.984): http://quasar.teoth.it/html/spectra/PNVJ17592412+2520317.jpg C. Buil spectrum (Apr, 11.009): http://www.astrosurf.com/buil/nova3/_pnvj17592412+2520317_20140411_009_cbuil.png Similar spectral profile is observed by R. Leadbeater on Apr, 11.046
2014 04 04 11.4623
L. Elenin (Lyubertsy, Russia) and I. Molotov (Moscow, Russia) confirm an optical transient PNV J17592412+2520317. Object visible on 3x150sec images remotely taken at ISON-NM Observatory (Mayhill, NM, USA) with 0.4-m f/3 telescope + CCD (KAF09000) on Apr. 04 11.4623, 2014. Object located at 17h 59m 24s.13 +/- 0".07, +25d 20' 32".5 +/- 0".07 (UCAC-4) with magnitude 13.8R (mag. limit ~19.0m). Nothing is visible at this position on the POSS and POSSII images. Image of PNV J17592412+2520317 available at http://spaceobs.org/images/TOCP/PNVJ17592412+2520317-20140411.png