Central Bureau for Astronomical Telegrams

Central Bureau for Astronomical Telegrams -- Image credits

CBAT "Transient Object Followup Reports"

PSN J06463985+6021028

PSN J06463985+6021028   2011 08 20.1208*  06 46 39.85 +60 21 02.8  15.6 U   60E  36N  N2273B    9 0


2011 08 20.1208

PSN J06463985+6021028 2011 08 20.1208a 0.3-m s.c., Col Druscie obs, Italian Supernovae Search P. PSN J06463985+6021028 2011 08 20.1208b observer A. Dimai, m.v. +15,0 U, no minor planet present, PSN J06463985+6021028 2011 08 20.1208c nothing was present in our last images of 2011-04-21



2011 08 20.1208

POSSIBLE DISCOVERY BY : ALESSANDRO DIMAI AT COL DRUSCIE' OBS.- CORTINA D'AMPEZZO (ITALY) IN THE COURS OF THE ITALIAN SUPERNOVAE SEARCH PROJECT - TELESCOPE C11 - CCD SBIG ST8 - PSN PRESENT ON TWO IMAGES OF 60 SEC. OF EXPOSURE - LIMIT. MAG. ABOUT +18.0 - OUR PRECEDENT IMAGES (2011 APRIL 21st SHOWED NOTHING AT THE POSITION OF THE PSN , AND IT DOESN'T APPEAR ON POSS (RED AND BLUE PLATES). NO KNOWN MINOR PLANET IS MARKED IN THE POSITION OF THE PSN . BEST REGARDS.



2011 08 20.1208

More accurate measures of the magnitude of the PSN indicate a value of + 15.0



2011 08 21.1243

MAGNITUDE ESTIMATE TAKEN ON 2011 AUGUST 21.1243 UT AT THE COL DRUSCIE' OBS. GIVE A VALUE OF +14.8 U



2011 08 23.4190

Object detected at position end figures 39.74, 02.0 (UCAC3). Magnitude 15.44U +/- 0.2. Used average of 8 x 60-sec images. Nothing visible at this position on DSS. Observer: R. A. Koff, Bennett, Colorado USA (H09). Image posted at http://antelopehillsobservatory.org/SNpictures/PSNJ06463985+6021028final.jpg



2011 08 22.1118

MAGNITUDE ESTIMATE TAKEN ON 2011 AUGUST 22.1118 UT AT THE COL DRUSCIE' OBS. GIVE A VALUE OF +15.1 U Image posted at http://www.cortinastelle.it/cross/PSN_J06463985+6021028_20110822_024156UT.jpg



2011 08 23.449

This possible supernova in NGC 2273B was seen with 4 x 600 sec images using a clear filter. Astrometry: RA 06 46 39.77 Dec 60 21 02.8 Photometry: Mag 15.6 +/- 0.1 C These data were collected by Joseph Brimacombe, Cairns, Australia. Link to image and further information: http://www.flickr.com/photos/43846774@N02/6075087091/


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