A bright nova ignited in the constellation Cassiopeia, which is also available in the binoculars. The current brightness is around 7.8 mag (March 19, 2021) and still is getting brighter. Nova was given the designation Nova Cas 2021. It can be found close to the M52.
The flare of the nova discovered Japanese Yuji Nakamura March 18, 2021 as an object 9.6 mag. The interesting thing about this object is that the variable this star was known before it ignited. It was discovered as an eclipsing variable star by the Czech observer Zbyněk Henzl, who entered it in the Czech catalog of variable stars as CzeV3217.
This is most likely a geometric variable star and in this case it would be possible to calculate orbital elements of the components and estimate their weight, which would help to understand this nova burst nature.