PSN J12355235+2755563 2014 06 22.8900* 12 35 52.35 +27 55 56.3 17.0 U 70W 100S N4559 9 0
2014 06 22.8900
Giancarlo Cortini (Monte Maggiore Observatory-Predappio-ITALY) reports the discovery of a possible supernova in NGC 4559 by 0.35m. Sch.-Cass.F/5.5 + SXVR-H9 CCD camera on several unfiltered images taken on: 2014/06/22.8900(U.T.), 120sec.exposure, mag.+17.0, limit mag.about+19.0; the new object is located at: R.A.12 35 52.35, DECL.+27 55 56.3(2000.0) wich is: 100 arcsec. S and 70.3 arcsec. W from the centre of the parent galaxy. My past images of the same field taken on 2014/05/26.93 showed nothing at that position (limit mag.+19.0) and it doesn't appear on P.O.S.S. II red and blue plates. No known minor planet is marked in that position for the time of the discovery. This PSN is in the same position of the LBV discovered by L.O.S.S. two years ago, so it could be a new outburst of the LBV, the second one this year.
2014 06 23.296
This luminous blue variable in NGC 4559 was seen with 3 x 10 min images using a clear filter Photometry: Mag 16.93 +/- 0.44 C (V for ref; USNOA2) Astrometry: RA 12 35 52.23 Dec +27 55 56.5 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@N02/14467419706/