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

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

TCP J19284200+1942480 (N:)
https://www.aavso.org/vsx/index.php?view=detail.top&oid=1543685

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 https://asas-sn.osu.edu/light_curves/7c9d1f13-3135-4f62-a491-9aa8ed34ede1 --- Patrick Schmeer (Saarbrücken-Bischmisheim, Germany)

http://www.cbat.eps.harvard.edu/unconf/followups/J19284200+1942480.html

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

Clear skies,
Patrick

Deconinck Michel
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Thank you Patrick

Thank you Patrick

Position in Vulpeculae, not in Sagitta?

Michel

 

VAastro
Sequence for TCP J19284200+1942480

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

Regards

Erik Schwendeman

AAVSO Sequence Team Member

SPK
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Not an astronomical transient

TCP J19284200+1942480 was no astronomical transient, but CCD noise – according to the "discoverer(s)":
http://www.cbat.eps.harvard.edu/unconf/followups/J19284200+1942480.html

Refards,
Patrick

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