[vsnet-alert 24392] CH UMa outburst (started June 24)

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

CH Ursae Majoris  (UGSS)
https://www.aavso.org/vsx/index.php?view=detail.top&oid=37213
 
Visual magnitude estimates by P. Schmeer, Bischmisheim, Germany:
UMACH 20200623.954 <137 Scp
UMACH 20200624.926  132 Scp
Sequence: AAVSO (V magnitudes)
Instrument: 203-mm SCT

Complete 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/979e76a7-5167-430a-8a90-e49e77322146
UMACH 20200624.152  14.76g ASN
UMACH 20200624.153  14.96g ASN
UMACH 20200625.136  12.82g ASN
UMACH 20200625.137  12.81g ASN
UMACH 20200625.139  12.80g ASN
 
AAVSO data (including Eddy Muyllaert's obs. for June 24):
https://www.aavso.org/apps/webobs/results/?star=CH+UMa
 
ZTF light curve:
https://lasair.roe.ac.uk/object/ZTF18aabjlca/
 
The previous outburst began on 2019 June 19 and lasted until
at least June 28.
 
Clear skies,
Patrick