IAU Central Bureau for Astronomical Telegrams

Central Bureau for Astronomical Telegrams -- Image credits

CBAT "Transient Object Followup Reports"

PSN J21253403-4016432

PSN J21253403-4016432   2012 06 27.18  *  21 25 34.03 -40 16 43.2  15.8 U 37W 16S   IC5105A     9 0



2012 06 25.45

mag>17.0R; 0.25m reflector TAROT; observer A. klotz




2012 06 27.42

mag=15.7R; 0.25m reflector TAROT; observer A. klotz




2012 07 01.695

This possible supernova in IC 5105A was seen with 4 x 15 min images Astrometry: RA 21 25 34.03 Dec -40 16 43.1 Photometry: 15.9 +/- 0.1 IR > 700 nm (R as ref) These data were collected by Joseph Brimacombe, Cairns, Australia Link to image and further information http://www.flickr.com/photos/43846774@N02/7483217444/




2012 07 10.38

A. Klotz (IRAP France) used the robotic TAROT telescope at la Silla, Chile. Refined photometry has been performed using an archive image without the supernova as a substractive mask. Images are R filtered. The star NOMAD-1 0497-0870484 R=15.76 is choosen as the photometric calibrator. 2012 Jun. 08.37 mag>18.1R. 2012 Jul. 25.45 mag=18.1R. 2012 Aug. 01.42 mag=16.1R. 2012 Aug. 10.38 mag=15.5R. Using NED data for extinction and luminosity distance, we deduce an absolute R magnitude -18.8 at the date 2012 Aug. 10.38. The brightness continues to increase.




2012 07 10.380

Erratum for dates published by A. Klotz in the follow-up 2012 07 10.38. Please replace the dates by: 2012 Jun. 08.37 mag>18.1R. 2012 Jun. 25.45 mag=18.1R. 2012 Jul. 01.42 mag=16.1R. 2012 Jul. 10.38 mag=15.5R. Using NED data for extinction and luminosity distance, we deduce an absolute R magnitude -18.8 at the date 2012 Jul. 10.38.



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