[vsnet-outburst 23872] TCP J20225930+5239030: new transient (12.2 mag) in Cygnus

[Patrick Schmeer pasc1312-aavso@yahoo.de via vsnet-outburst]

TCP J20225930+5239030  (UG:)

Discovery details:
R.A. 20h22m59.30s, Decl. +52°39'03.0" (J2000.0)
2019 July 7.6524 UT, 12.2 mag (CCD, unfiltered)
Discoverer: Yuji Nakamura (Kameyama, Mie, Japan)
http://www.cbat.eps.harvard.edu/unconf/followups/J20225930+5239030.html

Likely (blue) progenitor: Gaia DR2 position end
figures 59.369s, 05.48" (equinox J2000.0, epoch
2015.5, Gmag. 20.08, parallax 0.9657 ± 0.5002 mas).
A fainter Gaia DR2 source (Gmag. 21.10) is 0.9"
to the NE.
No outbursts were recorded by the ASAS-SN Sky
Patrol (Shappee et al. 2014ApJ...788...48S and
Kochanek et al. 2017PASP..129j4502K) between
2015 March 2 and 2019 July 6:
https://asas-sn.osu.edu/light_curves/194cc108-7b48-40a9-9adc-cd658bdd623f

Spectroscopy, precise astrometry, and multiband
as well as time-resolved photometry are urgently
required.

Clear skies,
Patrick