Central Bureau for Astronomical Telegrams

Central Bureau for Astronomical Telegrams -- Image credits

CBAT "Transient Object Followup Reports"

TCP J18224935-2408280

TCP J18224935-2408280   2021 05 19.6831*  18 22 49.35 -24 08 28.0  13.3 U             Sgr       9 9


2021 05 19.683

Discovered by Tadashi Kojima, Tsumagoi,Gunma-ken, Japan, on three frames under limiting mag.= 14.0 taken by Canon EOS 6D + 300mm f/3.2 lens. Nothing is visible at this location taken on 2021 May09.698 UT under limiting mag.= 14.5, Mag=13.6 on 2021 May31.711UT with same instrument.



2021 06 06.4159

Photometry results were B=14.15, V=13.50, Rc=12.83 and Ic=12.07 with 0.43-m f/4.5 CDK astrograph + FLI-PL6303E CCD (T21, iTelescope.NET) Seiichiro Kiyota, Japan



2021 05 16.9164

Observed on the rise at gmag. 15.2 on 2021 May 16.9 UT by the ASAS-SN Sky Patrol (Shappee et al. 2014ApJ...788...48S and Kochanek et al. 2017PASP..129j4502K), at gmag. 13.6–14.1 since May 21, no previous outbursts recorded since 2016 March 14, see https://asas-sn.osu.edu/sky-patrol/coordinate/5aac39b8-a487-48b3-a4e5-bcd3d6ae920b and https://asas-sn.osu.edu/sky-patrol/coordinate/fde3a0a5-f190-4d60-b03c-d2da99c20247 —— Patrick Schmeer (Saarbrücken-Bischmisheim, Germany)



2021 06 06.76

There is a Gaia DR2 "LPV" (reported period of very roughly 800 days) 2" away from the position provided by Kojima-san. Gaia EDR3 position end figures are 49.446s in RA and 29.34" in DE (equinox J2000.0, epoch J2016; mean Gmag. 14.4). Also catalogued as VVV J182249.44-240829.25. Symbiotic outburst? Patrick Schmeer (Saarbrücken-Bischmisheim, Germany)



2021 06 08.3146

Spectroscopy, precise astrometry and follow-up multiband photometry are encouraged. Latest ASAS-SN Sky Patrol (see above) light curve and data at https://asas-sn.osu.edu/sky-patrol/coordinate/e9fc1941-6af0-4c22-8a4d-943f8a2f8cd9 —— Patrick Schmeer (Saarbrücken-Bischmisheim, Germany)



2021 06 09.4421

Position end figures 49s.45 RA and 29".3 DEC. Photometry results were V=13.10 remotely with 0.43-m f/4.5 CDK astrograph + FLI-PL6303E CCD (T21, Mayhill, New Mexico, US) iTelescope.NET -- Robert Fidrich, Hungary. Photo: https://twitter.com/fidusz/status/1402665083684196361


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