Central Bureau for Astronomical Telegrams

CBAT "Transient Object Followup Reports"

PSN J13303600+4706330

PSN J13303600+4706330   2011 01 01.967 *  13 30 36  0 +47 06 33.0  14   U  150E  90S  M51       0 0

2011 05 31

CCD magnitude about 14 on May 31 and on June 1.89 UT but not present on May 10, according to A. Riou of France; position from T. Griga (Germany) on June 1.97; offset from T. Reiland (PA, U.S.A.) on June 2.19

2011 06 02.72089

The new object approximately located at R.A.=13h30m05s.14 Decl.=+47°10'11".0 (equinox 2000.0).Which is about 138" east and 92" north of the center of the NGC5194.Magnitude 14.4 V, limiting magnitude 19. Observer: G.Sun, X.Gao CHINA (C42) PSN J12565170+2629167 Location is not the same，Are they the two goals?

2011 06 02.72089

The new object approximately located at R.A.=13h30m05s.14 Decl.=+47°10'11".0 (equinox 2000.0).Which is about 138" east and 92" north of the center of the NGC5194.Magnitude 14.4 V, limiting magnitude 19. Observer: G.Sun, X.Gao CHINA (C42) PSN J12565170+2629167 Location is not the same，Are they the two goals?

2011 06 03.18

Nothing visible at original coordinates to limiting mag of 19.5. However, PSN visible at coordinates 13 30 05.56 +47 10 10.3 (UCAC3) (as reported by Sun and Gao). This object not visible on DSS. Magnitude 14.8U with uncertainty due to galaxy glow. Used sum of 20 x 30 sec images. Observer: R. A. Koff, Bennett, Colorado USA (H09) Image posted at website: http://antelopehillsobservatory.org/SNpictures/PSNJ13303600+4706330final.jpg

2011 05 30.90

Unfiltered (4x60s) CCD image of M51 field, obtained around 2011 05 30.90UT with 0.25-m, f/5 reflector at Univ. of Ljubljana Astronomical Observatory show nothing at original coordinates to limiting R mag 19.5. Also there is nothing present to limiting R mag 19.5 at coordinates R.A.=13h30m05s.14 Decl.=+47°10'11".0 (equinox 2000.0) as reported by G.Sun and X.Gao. Limiting magnitude derived from USNO-B1 1370-0275376 comparison star R=15.63. H. Mikuz, B. Dintinjana University of Ljubljana

2011 06 03.4695

CCD magnitude 14.5, under the limiting magnitude 18.5. Position end figures 05.12, 11.1. Measured using UCAC3. Values are average of 6x60-sec images. Observer: T. Yusa, Osaki, Japan (D92).