Central Bureau for Astronomical Telegrams

CBAT "Transient Object Followup Reports"

PNV J15384000-4744500

PNV J15384000-4744500   2018 06 03.4306*  15 38 40.00 -47 44 50.0   9.1 U              Lup       0 0

2018 06 03.4306

Object discovered by Rob Kaufman (Bright, Victoria, Australia) at White Cliffs, NSW, Australia; object visible in 5 DSLR frames taken with 55mm lens. Position approximate - astrometry required. No minor planets or comets at this position, nor known variables in VSX. Last ASAS-SN observation 22 May 2018, nothing to 15.697 V. Discovery image here: http://i727.photobucket.com/albums/ww271/Rob_Kau/PNV%20J15384000-4744500%20discovery%20image.jpg~original

2018 06 03.5670

Photometry results were B=9.69, V=8.98, Rc=8.60 and Ic=8.19 with iTelescope T17( 0.43-m f/6.8 CDK astrograph + FLI PL4710 CCD) at Siding Spring Observatory, NSW, Australia. Position end figures were 43.84 and 41.07 in R.A. and Dec. Low resolution spectrum ,taken with same telescope, might showed Ha emission but not significant. http://meineko.sakura.ne.jp/ccd/PNV_J15384000-4744500.jpg Seiichiro Kiyota (Kamagaya, Japan)

2018 06 03.63

A Gaia DR2 star of magnitude 19.36 G is 1.0" from the position reported by Kiyota-san; another designation for this star is GSC2.3 S8TZ090424 (15 38 43.898 -47 44 40.87; F= 17.55, Bj= 20.19, N= 17.70 mag). No previous outbursts or eruptions were recorded by the ASAS-SN Sky Patrol (Shappee et al. 2014ApJ...788...48S and Kochanek et al. 2017PASP..129j4502K) since 2016 March; the latest available observation is 2018 May 22.2374 UT, fainter than magnitude 15.8 V: https://asas-sn.osu.edu/light_curves/599236bc-d453-4a7e-a72b-7d7e591ed126 --- Patrick Schmeer (Saarbrücken-Bischmisheim, Germany)