Central Bureau for Astronomical Telegrams

CBAT "Transient Object Followup Reports"

PSN J16495254+5532345

PSN J16495254+5532345   2015 09 16.5201*  16 49 52.54 +55 32 34.5  16.1 U    1W   2S  NGC6246   1 9

2015 09 16.5201

Discovery Report from Ken'ichi Nishimura, Ebetsu, Hokkaido, Japan. Instruments: 0.3-m refl. + unfiltered CCD. 30 sec * 5 exposures.

2015 09 16.5201

Discovery image from Ken'ichi Nishimura. http://yubeotsu.web.fc2.com/6246.jpg

2015 09 08.0551

I took confirmation images of this PSN with 0.50-m f/4.5 CDK astrograph + FLI-PL11002M at iTelescope.NET, Mayhill, NM, USA, remotely. I could not see any new object on my image in comparison with CCD image of NGC6246 taken on Jan. 12, 2015 and provided from Kunihiro Shima. I also checked several images of NGC6246 on Internet. A star existed at reported position in all images that I checked and its brightness were almost constant in them. My image is available at http://meineko.sakura.ne.jp/ccd/NGC6246-150918-L.jpg for validation. Seiichiro Kiyota (Kamagaya, Japan)

2015 09 18.0551

Date of my last report should be 18.0551, not 08.0551. Seiichiro Kiyota

2015 09 16.5201

I'm sorry mistake report. Ken'ichi Nishimura, Ebetsu, Hokkaido, Japan.

2015 09 19.75125

This transient was observed on 2015 09 19.75125 by G. Masi, remotely using the 17"-f/6.8 robotic unit part of the Virtual Telescope Project facility, at Bellatrix Astronomical Observatory in Ceccano, Italy. 120-seconds exposures, unfiltered, show the source at mag. 16.8 (R mags for the reference stars from UCAC-4). We also performed astrometry, getting the following end figures: 52.61; 34.5 (J2000.0, mean residuals of 0.2" on both axes).