Central Bureau for Astronomical Telegrams

CBAT "Transient Object Followup Reports"

PSN J22370560+3424319

PSN J22370560+3424319   2014 01 05.09  *  22 37 05.60 +34 24 31.9  15.5 U   20E  24S  N7331     L 0

2014 01 04.8610

I found a pre-discovery image of the possible supernova after seeing it registered on the TOCP. It was deeply hidden in an image taken with the 35m f/6 SCT on 2014.04.861 U.T.. Its unfiltered mag. was 15.8 with end figures of 05.59s and 31.3". Astrometry of the galaxy and psn gives offsets of 18"E and 25"S. Ron Arbour Pennell Observatory South Wonston U.K.

2014 01 04.358

Image = http://www.k-itagaki.jp/images/7331.jpg

2014 01 06.702

This transient was observed on 2014 01 06.702 by Gianluca Masi, Francesca Nocentini and Patrick Schmeer, remotely using the 17"-f/6.8 robotic unit part of the Virtual Telescope Project facility in Ceccano, Italy. 120-seconds exposures, unfiltered, show the source at mag. 15.3 (R mags for the reference stars from UCAC-4). We also performed astrometry, getting the following end figures: 05.59; 31.4" (J2000.0, mean residuals of 0.2" on both axes).

2014 01 8.09

Mag = 14.5 from KAIT clear band (roughly R) measurement after subtraction.

2014 01 07.725

This transient was observed on 2014 01 07.725 by Gianluca Masi, Patrick Schmeer and Francesca Nocentini, remotely using the 14" robotic unit part of the Virtual Telescope Project facility in Ceccano, Italy. Twelve low res spectra were taken, using a 100 lines/mm grating with a dispersion of about 34 Angstrom/pixel. Averaging them, we do NOT see neither evidence of Si II absorption nor H-alpha emission.