[vsnet-alert 24364] TCP J02041514+4053325: new transient (14.5 mag) in Andromeda

Wed Jun 17 17:20:50 JST 2020

TCP J02041514+4053325  (UGWZ:)

RA 02h04m15.14s DE +40°53'32.5" (J2000.0)
2020 June 16.7052 UT, mag. 14.5 (CCD, unfiltered)
Discoverer: Hideo Nishimura (Kakegawa, Shizuoka-ken, Japan)
http://www.cbat.eps.harvard.edu/unconf/followups/J02041514+4053325.html

2020 06 16.705 UT
Discovered by Hideo Nishimura, Kakegawa, Shizuoka-ken, Japan,
who found this star on three frames (limit mag. = 16) taken
with Canon EOS 6D digital camera + 200-mm f/3.2 lens, who writes there
is no past image and a faint blue star on PanSTARRS/DR1 color.

2020 06 17.30 UT
The faint blue Pan-STARRS1 source mentioned above by
Nishimura-san is PSO J020414.836+405333.405 (gmag. 22.2, rmag. 21.9) at
02 04 14.853 +40 53 33.88 (J2000.0). No brightenings were recorded by
the ASAS-SN Sky Patrol (Shappee et al. 2014ApJ...788...48S and Kochanek
et al. 2017PASP..129j4502K); complete light curve and data at
https://asas-sn.osu.edu/light_curves/6e61f5e1-37ad-47e5-b7ae-a0703a3ef44a

WZ Sagittae-type dwarf nova outburst? Multiband and time-resolved
photometry as well as spectroscopy are required.

Clear skies,
Patrick