Central Bureau for Astronomical Telegrams

Central Bureau for Astronomical Telegrams -- Image credits

CBAT "Transient Object Followup Reports"

PNV J18225925-1914148

PNV J18225925-1914148   2015 10 31.376 *  18 22 59.25 -19 14 14.8  11.5 U             Sgr       9 0

2015 10 31.376

Discovered by H. Nishimura, Kakegawa and M. Yamamoto (on Oct. 31.392 UT), Okazaki, Japan, independently, who write nothing is visible on 2015 Oct. 25.382 UT by Yamamoto and on Oct. 28.387 UT by Nishimura. A discovery image by Nishimura at http://www.oaa.gr.jp/~oaacs/image/PNinSgr20151031.jpg.

2015 10 31.3859

This PNV was discovered independently by Shigehisa Fujikawa, Kan'onji, Kagawa, Japan, on a CCD frame taken using a Minolta F 3.5 f 120mm lens. He reported his discovery to National Astronomical Observatory of Japan at 9:57 UTC on 2015 Oct 31, which was before the above discovery was posted on the TOCP page. His frame was taken on 2015 Oct 31.3859 UT and yielded the position end figures as 59s.33 and 06".8 and the magnitude as 11.8.

2015 10 31.70597

This transient was observed on 2015 10 31.70597 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. 11.3 (R mags for the reference stars from UCAC-4). We also performed astrometry, getting the following end figures: 59.29; 12.8 (J2000.0, mean residuals of 0.2" on both axes).

2015 11 01.0527

Photometry results were B=14.30, V=12.96, Rc=11.63 and Ic=10.28 with 0.50-m f/4.5 CDK astrograph + FLI-PL11002M CCD at iTelescope.NET, Mayhill, NM, USA, remotely. My image available at http://meineko.sakura.ne.jp/ccd/PNV_J18225925-1914148.jpg. Seiichiro Kiyota (Kamagaya, Japan)

2015 11 01.373

Mag.= 11.8, position end figures 59s.29, 12".4 observed by T. Noguchi, Chiba-ken, Japan using 0.23-m f/6.3 Schmidt Cassegrain + unfiltered CCD, An image posted at http://park8.wakwak.com/~ngc/images/PNVinSgr_20151101.jpg.

2015 11 02.417

K. Ayani, Bisei Astronomical Observatory, forwards a report by Mitsugu Fujii (Kurashiki, Okayama, Japan), who obtained spectrograms (R about 500 at H-beta) of this PNV on Nov. 2.417 UT and Nov. 3.389 UT with a 0.4-m telescope of Fujii Kurosaki Observatory. He found a strong and broad H-alpha emission line, an H-beta emission line, He I (501.6, 587.6, 706.5 nm) emission lines, and an N II (567.9 nm) emission line on both nights. The FWHMs of the H-alpha line, measured by Gaussian fitting, are 4800 km/s on Nov. 2 and 4200 km/s on Nov. 3. Fujii's spectrograms are posted at website URL http://otobs.org/FBO/etc/pnv_j18225925-1914148.htm.

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