Central Bureau for Astronomical Telegrams
CBAT "Transient Object Followup Reports"
PSN J17214592+6949141
PSN J17214592+6949141 2014 05 08.5895* 17 21 45.92 +69 49 14.1 17.3 U 10E 7N P2732472 9 0
2014 05 08.589
Vladimir Lipunov reports the discovery of a possible supernova by Vladislav Shumkov 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 18.4m) obtained on 2014-05-08.589 UT. The new object (unfiltered magnitude 17.3) is located at R.A. = 17h21m45s.92, Dec. = +69o49'14".1 (J2000.0) which is 10" east and 7" north of the galaxy PGC 2732472 = Kazarian 654. The object is seen in 6 images. Sum of six 60-sec unfiltered exposures by MASTER-Amur on 2014 May 08.588-08.619 UT is uploaded to http://master.sai.msu.ru/static/OT/J172145+694914-MASTER-Amur.jpg D. Denisenko and E. Gorbovskoy (SAI MSU) report that the object was not present on the unfiltered MASTER-Amur image of 2012-10-22.457 UT (limiting mag 19.1). Nothing but galaxy background is visible at the position of PSN on SDSS color-combined image. MASTER-Amur discovery and reference images are available at http://master.sai.msu.ru/static/OT/172145.92694914.1.png (see ATel #6130, http://www.astronomerstelegram.org/?read=6130 for more detail).
2014 05 09.87062
this transient was observed on 2014 05 09.87062 by Gianluca Masi, 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. 120-seconds exposures, unfiltered, show the source at mag. 17.6 (R mags for the reference stars from UCAC-4). We also performed astrometry, getting the following end figures: 45.89; 14.2 (J2000.0, mean residuals of 0.2" on both axes).
2014 05 10.360
This possible supernova in PGC 2732472 was detected with 8 x 10 min images using a clear filter Photometry: Mag 17.61 +/- 0.13 C (V for ref) Astrometry: RA 17 21 45.94 Dec +69 49 14.1 These data were collected remotely by Joseph Brimacombe, Coral Towers Observatory, Cairns, Australia. Link to image and further information: https://www.flickr.com/photos/43846774@N02/14161031452/
2014 05 23.9223
Mag.: 17.5(V) R.A.: 17 21 45.88; Decl.: +69 49 15.2 (2000.0). Reference: NOMAD Observer: Massimiliano Martignoni - Observatory: Stazione Astronomica Betelgeuse (B75), Magnago, Italy Telescope: Schmidt-Cassegrain 0.25m-f/10.0 - CCD: KAF0261E
