Central Bureau for Astronomical Telegrams

CBAT "Transient Object Followup Reports"

PNV J18365700-2855420

PNV J18365700-2855420   2015 03 15.634 *  18 36 57.00 -28 55 42.0   6.0 U             Sgr       9 1

2015 03 15.634

Possible nova in Sagittarius discovered by John Seach, Chatsworth Island, NSW, Australia. Magnitude 6.0 object visible on 3 images taken with DSLR and 50mm f/1.0 lens, limiting magnitude 11.0. No object visible on images taken with same instrument on March 14.590 UT, limiting magnitude 10.5. No bright variable star, or minor planet at location.

2015 03 15.726

Follow up observations by John Seach. Bright H-alpha source visible on 6 DSLR images, 50mm f/1.0 lens and H-alpha filter.

2015 03 15.802

Mag=5.3 , position end figures 56s.87, 39".3 , K.Itagaki:0.5m f6.8

2015 03 16.5275

We performed some follow-up of this object remotely through a 0.61-m f/6.5 astrograph + CCD) of ITelescope network (MPC Code U69 - Auberry, California - USA). On our images taken on March 16.5, 2015 we can confirm the presence of an optical counterpart with R-CCD magnitude 5.8 at coordinates: R.A. = 18 36 56.85, Decl.= -28 55 40.0(equinox 2000.0; UCAC-4 catalogue reference stars). An animation showing a comparison between our confirmation image and the archive POSS2/UKSTU plate (R Filter - 1996): http://bit.ly/1EpSCS9 - Our annotated confirmation image: http://bit.ly/1FrQLhi by Ernesto Guido & Nick Howes

2015 03 16.7274

Photomety: B=6.39, V=6.06, R=5.66, position end figures 56s.85, 39".7, remotely using a 0.32-m f/9.3 Ritchey-Chretien + CCD(SBIG ST8 XME) + f/7.4 Focal Reducer at the iTelescopeNET Siding Spring, Australia. Observer T. Yusa, Osaki, Japan. See a color image at: http://space.geocities.jp/yusastar77/supernova/NovaSgr2015_2_150316.htm