[vsnet-alert 24619] V493 Gem full outburst! (12.7 mag on Aug. 30)

[Patrick Schmeer pasc1312-aavso@yahoo.de via vsnet-alert]

 V493 Geminorum = ASASSN-14mv (AM CVn star, "helium dwarf nova")
https://www.aavso.org/vsx/index.php?view=detail.top&oid=399953
 
Recent ASAS-SN Sky Patrol (Shappee et al. 2014ApJ...788...48S
and Kochanek et al. 2017PASP..129j4502K) light curve and data:
https://asas-sn.osu.edu/light_curves/aac6cc91-df12-493e-9951-f4b2a6429dbf
 
AAVSO data (latest observations by Josch Hambsch, HMB):
https://www.aavso.org/apps/webobs/results/?star=V493+Gem
 
At mag. ~15.6 on August 23-29, then a further (sudden)
brightening to mag. 12.7 on August 30.
 
Time-resolved photometry is encouraged.
 
Clear skies,
Patrick
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     Am Donnerstag, 27. August 2020, 01:12:51 MESZ hat Taichi Kato <tkato at kusastro.kyoto-u.ac.jp> Folgendes geschrieben:  
 
 V493 Gem (AM CVn) outburst

http://gsaweb.ast.cam.ac.uk/alerts/alert/Gaia20dyy/
Gaia20dyy    AT2020sak    2020-08-24 19:48:46    108.36359    20.93121    15.60    17.95    0.63    CV    2020-08-26 10:58:28    outburst in known AM CVn star V0493 Gem (ASASSN-14mv)

  The last outburst was in 2015 (superoutburst with
rebrightenings).  There have apparently been no major
(WZ Sge-type) outburst since then.