Skip to main content

TCP J19284200+1942480: new transient (11.9 mag) in Vulpecula (not yet confirmed)

4 posts / 0 new
Last post
SPK's picture
TCP J19284200+1942480: new transient (11.9 mag) in Vulpecula (not yet confirmed)

TCP J19284200+1942480 (N:)

RA 19h28m42.00s, DE +19°42'48.0" (J2000.0)
2020 March 19.7836 UT, mag. 11.9 (CCD, unfiltered)
Discoverer: Koichi Nishiyama (Kurume, Fukuoka Prefecture, Japan)

2020 03 18.4477 UT
Crowded field. The near-infrared source UGPS J192842.03+194247.9 (Hmag. 18.4) with position end figures 42.04s in RA and 47.9" in DE (J2000.0) is only 0.5" east of the reported position of the transient. According to the ASAS-SN Sky Patrol (Shappee et al. 2014ApJ...788...48S and Kochanek et al. 2017PASP..129j4502K) the transient was fainter than gmag. 16.4 on 2020 March 18.448 UT; no brightenings were recorded since 2015 February 8. Complete light curve at --- Patrick Schmeer (Saarbrücken-Bischmisheim, Germany)

Highly reddened galactic classical nova? Spectroscopy, multiband photometry, and precise astrometry are urgently required.

Clear skies,

Deconinck Michel
Deconinck Michel's picture
Thank you Patrick

Thank you Patrick

Position in Vulpeculae, not in Sagitta?



Sequence for TCP J19284200+1942480

The sequence has been made for TCP J19284200+1942480  and is in VSP for F scale


Erik Schwendeman

AAVSO Sequence Team Member

SPK's picture
Not an astronomical transient

TCP J19284200+1942480 was no astronomical transient, but CCD noise – according to the "discoverer(s)":


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