Central Bureau for Astronomical Telegrams

CBAT "Transient Object Followup Reports"

TCP J18111965-2822416

TCP J18111965-2822416   2024 07 22.4868*  18 11 19.65 -28 22 41.6  13.3 U             Sgr       9 9

2024 07 22.4868

Discovered by Tadashi Kojima, Tsumagoi,Gunma-ken, Japan, on three frames(4_s exp) under limiting mag.= 14.0 taken by Canon EOS 6D digital camera + 300mm f/2.8 lens. Nothing is visible at this location taken on 2024 Jul07.519UT under limiting mag.=14.3 with same instrument. It may be a long-period variable star.

2024 07 25.921

Position end figures 19s.59, 38.7" measured with 0.36m f/8 reflector + CCD at Skygems Observatory, Namibia. J2000, Gaia DR2 positions. Position appears to correspond with Gaia DR3 4050854622092706816 (magnitude 14.6 G). Photometry V=13.12, B=14.76 and R=12.20. Andrew Pearce, Nedlands, Western Australia

2024 07 30.523

Mitsugu Fujii taken using the spectrograph(NLS-Ⅱ,R～1000) on the 0.4-mSCT telescope at Fujii Kurosaki Observatory in Okayama, Japan. His spectrum image at https://otobs.org/FBO/fko/microlens/tcp_j18111965-2822416.htm. T.Kojima

2024 08 03.458

This object is the same as OGLE-2024-BLG-0156 and AT 2024pwg. T.Kojima