Central Bureau for Astronomical Telegrams

CBAT "Transient Object Followup Reports"

TCP J18102829-2729590

TCP J18102829-2729590   2016 10 20.3828*  18 10 28.29 -27 29 59.0  10.7 U             Sgr       I 0

2016 10 20.383

Discovered by K. Itagaki, Yamagata, Japan using 180-mm f/4.0 lens, who has confirmed this object using 0.60-m f/5.7 reflector immediately. Nothing is visible at this location on a past frame taken on 2016 Oct. 4.447 UT using same 180-mm lens (limit mag.= 13.0). See a CCD image at http://www.k-itagaki.jp/sgr.jpg.

2016 10 20.4310

Photometry results were V=10.95 and Ic=10.24 with 0.70-m f/6.6 CDK astrograph + FLI PL09000 CCD, iTelescope @ NSW, Australia remotely. My image is available at http://meineko.sakura.ne.jp/ccd/TCP_J18102829-2729590.jpg Seiichiro Kiyota (Kamagaya, Japan)

2016 10 20.391

Mag= 10.5 by T. Kojima, Gunma, Japan using 135-mm f/2.8 lens, who found on his patrol frame.

2016 10 23.4187

20161023.4187 7.9 U observed with 180 mm lens and unfiltered STL-6303E. Akira Takao ( Kitakyushu, Japan )

2016 10 23.368

Mag.= 7.7 observed by K. Itagaki with 0.50-m reflector at Tochigi station.

2016 10 24.38

K. Ayani, Bisei Astronomical Observatory (BAO), Ibara, Okayama, Japan, obtained a low-resolution spectrogram (range 400-800 nm; resolution 0.5 nm at H-alpha) of this Nova in Sagittarius (TCP J18102829-2729590, CBET 4332) with the BAO 1.01-m telescope on Oct. 24.38 UT. The spectrum shows absorption lines of Balmer lines, Fe II (42), Na D, and O I 777.4. The H-alpha and O I line show P-Cyg profile. The absorption bottom of H-alpha is blueshifted by 600 km/s with respect to the emission peak. Our result confirms the report by Lucas (ATel #9658) that this TCP is a nova in early phase. The spectrum is viewable via website URL http://www.bao.city.ibara.okayama.jp/astro/2016/nova/TCP_J18102829-2729590_Oct24.png.

2016 10 24.38

I made a mistake in last report. The author's name of ATel #9658 is Paul Lukas. Very sorry.

2016 10 25.70

Actually his name is Paul Luckas (typo in ATel #9658): http://www.web.uwa.edu.au/people/paul.luckas --- Patrick Schmeer (Bischmisheim, Germany