Central Bureau for Astronomical Telegrams

CBAT "Transient Object Followup Reports"

PSN J14030581+5416254

PSN J14030581+5416254   2011 08 24.00  *  14 03 05.81 +54 16 25.4  17.2 U   59W 271S  M101      9 2

2011 08 24.000

This is a type Ia found very young. Found by PTF http://www.astronomerstelegram.org/?read=3581

2011 08 24.000

PTF just sent me their discovery image: http://www.RochesterAstronomy.org/supernova.html#PTF11kly

2011 08 25.1591

Object detected at position end figures 05.75, 25.2 (UCAC3). Magnitude 14.85U +/- 0.05. Average of 7 x 60-sec images. Limiting magnitude 18.5. Nothing visible except galaxy background on DSS at these coordinates. Observer: R. A. Koff. Bennett, Colorado USA (H09). Image posted at http://antelopehillsobservatory.org/SNpictures/PSNJ14030581+5416254final.jpg

2011 08 25.200

This possible supernova in M101 was seen with 11 x 300 sec images using a clear filter. Astrometry: RA 14 03 05.74 Dec 54 16 25.3 Photometry: Mag 14.9 +/- 0.1 C These data were collected by Joseph Brimacombe, Cairns, Australia. Link to image and further information: http://www.flickr.com/photos/43846774@N02/6079812340/

2011 08 25.177

This supernova in M101 was seen with 4 x 1200 sec images using a clear filter. Astrometry: RA 14 03 05.8 Dec 54 16 25.2 Photometry: Mag 14.9 +/- 0.3 C These data were collected by Joseph Brimacombe, Cairns, Australia. Link to image and further information: http://www.flickr.com/photos/43846774@N02/6079704081/

2011 08 25.83

R=13.9 +/- 0.3, V=13.8 +/- 0.3, B=13.8 +/- 0.3 (K. Sárneczky, 0.60-m Schmidt, Konkoly Observatory, Hungary)

2011 08 25.8020

B=14.2 +/-0.2, V=14.0 +/-0.2, R=14.1 +/-0.3 (B. Mikuz and J. Vales, 0.60-m reflector at Crni Vrh Observatory, Slovenia)

2011 08 26.8055

B=13.4 +/-0.2, V=13.2 +/-0.2, R=13.2 +/-0.2 (B. Mikuz and J. Vales, 0.60-m reflector at Crni Vrh Observatory, Slovenia)