Central Bureau for Astronomical Telegrams

CBAT "Transient Object Followup Reports"

TCP J18010780-2631434

TCP J18010780-2631434   2016 08 09.5323*  18 01 07.80 -26 31 43.4  10.7 U             Sgr       N 0

2016 08 09.5323

Koichi Nishiyama, Kurume,Japan and Fujio Kabashima, Miyaki,Japan report a discovery of possible nova (mag.= 10.7) in Sgr on two 40-s unfiltered CCD frames taken around 2016 Aug. 08.53233 UT ( limiting magnitude=13.0 ), using a 135-mm f/4 camera lens (+FLI 09000 camera). We have confirmed immediately the appearance of our discovery this PN on five 5-s unfiltered CCD frames taken around 2016 Aug 08.5323 UT ( limiting magnitude=17.7 ), using a 0.50-m f/6.8 reflector (+FLI 1001E camera). (magnitude of referred catalogue Hipparcos, others reference catalogue GSC-ACT) Nothing is visible at this location on two past survey frames taken on 2016 Aug 02.535 UT(limiting mag.= 12.9) and 08.556 UT (limiting mag.= 11.9) nor on DSS, USNO-B1.0, We have checked in Minor Planets. nearest star in USNO B1.0 has position end figures 07s74, 45"0, distance 1"8, magnitudes R1=20.71 I=18.58

2016 08 06.96

Discovered on 2016 Aug. 6.96 UT and reported on Aug. 8.773 UT as ASASSN-16ig by the All Sky Automated Survey for SuperNovae: http://www.astronomerstelegram.org/?read=9343 --- Spectrum by Mitsugu Fujii (Taichi Kato, vsnet-alert message 20058): http://otobs.org/FBO/fko/nova/asassn-16ig_20160808.png --- Patrick Schmeer (Bischmisheim, Germany)

2016 08 06.96

Excerpt from vsnet-alert message 20050 (Kris Stanek; 2016 Aug. 7, 22:59:16 UTC; http://ooruri.kusastro.kyoto-u.ac.jp/mailarchive/vsnet-alert/20050): "ASASSN-16ig 18:1:7.76 -26:31:43.5 2016-08-6.96 13.3 - very bright CV candidate caught very early, very close to the Galactic center, so could also be a classical nova, V>17.3 on 2016-08-05.96, V=13.3 on 2016-08-06.965. If ASASSN-16ig is a Galactic classical nova, it should appear much brighter in redder bands (R-band or I-band)" --- Patrick Schmeer (Bischmisheim, Germany)