Central Bureau for Astronomical Telegrams

Central Bureau for Astronomical Telegrams -- Image credits

CBAT "Transient Object Followup Reports"

PNV J16521887-3754189

PNV J16521887-3754189   2017 02 01.862 *  16 52 18.87 -37 54 18.9  11.7 U             Sco       9 0


2017 02 01.862

Discovered by H. Nishimura, Shizuoka-ken, Japan, on three 10-s frames using 200-mm f/3.2 lens + a Canon digital camera, who writes nothing is visible at this location on his frames taken before 2017 Jan. 25.872 UT, but he found a star (mag.= 12.5) on 2017 Jan. 30.868, mag.= 12.1 on Feb. 2.857 and mag.= 12.7 on Feb. 6.836 UT. Note a red star within several arc seconds. Also Kaneko reports mag.= 12.1 (R 11.4, V 13.3, B 15.2) on 2017 Feb.6.68 UT.



2017 02 10.7018

Photometry results were B=14.73, V=14.10, Rc=11.781 and Ic=12.48 with 0.50-m f/4.5 CDK astrograph + FLI PL6303E at iTelescope.NET, Siding Spring Observatory, NSW, Australia. Position end figures were 18.63 and 16.44 in RA and Dec. http://meineko.sakura.ne.jp/ccd/PNV_16521887-3754189.jpg Seichiro Kiyota (Kamagaya, Japan)



2017 02 10.835

Mag.= 12.6, position end figures 18s.66, 16".7 observed by T. Noguchi, Chiba-ken, Japan, using 0.23-m f/6.3 Schmidt Cassegrain + unfiltered CCD, who notes there is a star (mag.= 15.9) at same position on DSS (1995) and put an image at http://park8.wakwak.com/~ngc/images/PNVinSco_20170210.jpg.



2017 02 10.84

The "red star within several arc seconds" (see first comment) is only about 0.3" from the positions reported by S. Kiyota and T. Noguchi, respectively. Magnitudes for this star from several catalogues: USNO-B1.0 0520-0568078 (R1= 15.04, B2= 18.54, R2= 15.86, I= 12.46), GSC2.3 S8V6023335 (F= 16.30, j= 20.16, V= 16.97, N= 13.14), 2MASS J16521864-3754166 (J= 10.282, H= 9.104, K= 8.596), WISE J165218.64-375416.5 (W1= 8.437, W2= 8.399, W3= 7.954, W4= 7.950). -- Patrick Schmeer (Bischmisheim, Germany)



2017 02 23.7179

Mag.= 11.7 R, position end figures 18s.65, 16".3 observed by S. Foglia, L. Buzzi, P. Concari, C. Cremaschini, G. Galli, M. Tombelli,using 0.15-m f/7 Refractor + CCD at iTelescope.NET, Siding Spring Observatory, NSW, Australia. Image posted at http://www.asteroids.altervista.org/obs/PNV_J16521887-3754189.gif


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