Optical counterpart of PNV J00215475+5231007
ATel #15862; Roberto Nesci (INAF/IAPS)
on 15 Jan 2023; 17:30 UT
Credential Certification: Roberto Nesci (roberto.nesci@inaf.it)
Subjects: Optical, Cataclysmic Variable
The optical counterpart, in quiescence, of the likely dwarf nova PNV J00215475+5231007 (ATel #15857) is visible near the plate limit in the DSS POSS II blue plates and in the stacked images of the PanSTARRS survey with a quite blue color. It is not present in the Gaia DR3 database.
Stacked PanSTARRS magnitudes are g=20.48+-0.03, r=21.72+-0.07, i=21.36+-0.05.
I observed the source on 2023-01-14.729 UT with the Foligno Observatory (K56) 30 cm SCT Meade telescope, Johnson-Cousins BVR filters, and QHY174M camera. Comparison stars were taken from the APASS9 catalog. Aperture photometry was made with IRAF/apphot. The star was detected at B=14.90+-0.07, V=14.77+-0.07, r=14.99+-0.05.
Compared with the discovery magnitude 12.9 (unfiltered) by Hideo Nishimura (Shizuoka, Japan) on 2023-01-10.3705 UT, the star has dropped by about 1.9 mag, with a mean slope of 0.44 mag/day.
