Skip to main content

TCP J05515391+6504346: likely dwarf nova outburst (13.2 mag) in Camelopardalis

2 posts / 0 new
Last post
SPK's picture
TCP J05515391+6504346: likely dwarf nova outburst (13.2 mag) in Camelopardalis

TCP J05515391+6504346 (UG:)

Discovery details:
R.A. 05h51m53.91s, Decl. +65°04'34.6" (J2000.0)
2019 Apr. 1.4504 UT, 13.2 mag (CCD, unfiltered)
Discoverer: Hideo Nishimura (Shizuoka-ken, Japan)

2019 04 01.450 UT
Discovered by H. Nishimura, Shizuoka-ken, Japan, on three frames with 15 second exposure using Canon EOS 6D digital camera + 200-mm f/3.2 lens under the limiting mag = 14.7, who writes there is no previous image since this is not his survey area and also because of a faint star, he has confirmed the appearance of this star on April 1.593 UT.

2019 04 01.65 UT
A (blue) progenitor candidate is 2.3" away at Gaia DR2 position end figures 53.825s, 36.80" (equinox J2000.0, epoch 2015.5; Gmag. 20.62). Other designations are USNO-B1.0 1550-0122180 (Bmag. 20.9, Rmag. 20.2), GSC2.3 NAQ5009716 (Fmag. 20.08, Bjmag. 21.52), PSO J055153.857+650436.965 (gmag. 20.59, rmag. 20.63), and CSS_J055153.8+650436. No outbursts were recorded by the ASAS-SN Sky Patrol (Shappee et al. 2014ApJ...788...48S and Kochanek et al. 2017PASP..129j4502K) between 2012 Jan. 11 and 2019 Mar. 30; complete light curve at The transient is probably a dwarf nova outburst with an amplitude of about 7 magnitudes (WZ Sge type?).
*** Spectroscopy as well as multiband and time-resolved photometry are strongly recommended. ***
--- Patrick Schmeer (Saarbrücken-Bischmisheim, Germany)

Clear skies,

MZK's picture
TCP J05515391+6504346 190402

Already faded to CV=14.5. LC and period analysis shown below. Thin clouds impacted last half of time series. Period ~0.0571 d

Log in to post comments
AAVSO 49 Bay State Rd. Cambridge, MA 02138 617-354-0484