Central Bureau for Astronomical Telegrams

CBAT "Transient Object Followup Reports"

PSN J11473508+5558147

PSN J11473508+5558147   2015 06 17.2990*  11 47 35.08 +55 58 14.7  16.3 R             N3888

2015 06 18.89776

This transient was observed on 2015 06 18.89776 by G. Masi on P. Wiggins (the discoverer) request, remotely using the 17"-f/6.8 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. 16.3 (R mags for the reference stars from UCAC-4). We also performed astrometry, getting the following end figures: 35.08; 14.7 (J2000.0, mean residuals of 0.1" on both axes).

2015 06 19.90471

R.Belligoli, F.Castellani and C.Marangoni from Monte Baldo Astronomic Observatory Ferrara Monte Baldo Verona Italy "ISSP Italian Supernovae Search Program" member, confirme this transient in two 180s unfiltered images taken on 2015 06 19,90471 by Ritchey-Chretien 0.4m f/8. Astrometric measurements: RA 11h 47m 35.06s DEC +55° 58' 15.3" mag.16.3. Offset 5.6 East 12.9 North . Confirm image at http://www.osservatoriomontebaldo.it/uploads/ISSP/NGC3888-PSN-J11473508+5558147.jpg

2015 06 19.235

This Type 1a supernova in NGC 3888 was detected with 4 x 10 min images using a clear filter Photometry: Mag 17.45 +/- 0.47 C (V for ref; USNOA2) Astrometry: RA 11 47 35.22 Dec +55 58 15.2 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@N02/18981738816/