Central Bureau for Astronomical Telegrams

Central Bureau for Astronomical Telegrams -- Image credits

CBAT "Transient Object Followup Reports"

PSN J21134481+1334335

PSN J21134481+1334335   2013 10 22.6303*  21 13 44.81 +13 34 33.5  17.1 U   11W   4N  N7042     R 3


2013 10 23.2443

This PSN detected at coordinates 21 13 44.77 +13 34 33.1 (UCAC3). Magnitude 16.2 +/- 0.2 U. Limiting magnitude 18.3 . Sum of 6 x 60-sec images. Nothing visible other than galaxy background at these coordinates on DSS. Observer: R. A. Koff, Antelope Hills Observatory, Bennett, Colorado USA (H09). Image posted at: http://antelopehillsobservatory.org/SNpictures/PSNJ21134481+1334335final.jpg



2013 10 23.711

This transient was observed on 2013 10 23.711 by Gianluca Masi, Francesca Nocentini and Patrick Schmeer, remotely using the 17" robotic unit part of the Virtual Telescope Project facility in Ceccano, Italy. Unfiltered images show a source at mag. 16.5 (R mags for the reference stars from UCAC-4). We also performed astrometry (with a seeing of 1.5" and a scale of 0.63"/pixel to better see the suspect, just a few arcseconds away from the galaxy's nucleus), getting the following end figures: 44.78s 33.1" (J2000.0, mean residuals of 0.15" on both axes).



2013 10 23.743

Confirmed object not on DSS at position 21 13 44.77 +13 34 33.3, mag 16.6 unfiltered ST9XE+C11. Nick James. Image here: http://nickdjames.com/supernovae/2013/PSNJ21134481+1334335_20131023_ndj.jpg



2013 10 25.767

Several low resolution spectra of this transient were obtained on 2013 10 25.74 by Gianluca Masi, Francesca Nocentini and Patrick Schmeer, remotely using the 14" robotic unit part of the Virtual Telescope Project facility in Ceccano, Italy. For this, we used a 100 lines/mm grating, with a dispersion of 34.7 angstroms/pixel. We see clear Si II absorption around 6150 angstroms, suggesting this is a type Ia supernova. Also, we observed this transient on 2013 10 25.767 remotely using the 17" robotic unit part of the Virtual Telescope Project facility in Ceccano, Italy. Unfiltered images show a faint source at mag. 16.2.



2013 10 24.080

This possible supernova in NGC 7042 was detected with 5 x 15 min images using a clear filter Photometry: Mag 16.59 +/- 0.12 L (V for ref) Astrometry: RA 21 13 44.76 Dec +13 34 33.6 These data were collected remotely by Joseph Brimacombe, Cairns, Australia. Link to image and further information: http://www.flickr.com/photos/43846774@N02/10485931233/



2013 11 03.3660

Astrometry: R.A. 21 13 44.79 Dec. +13 34 33.4 , Unfiltered CCD mag 16.0 (K. Nishimura, Ebetsu, Hokkaido, Japan; with 0.35-m refl. SBIC ST-8XME CCD).


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