[vsnet-alert 20291] DDE 48 likely superoutburst

[Denis Denisenko]

Following [vsnet-alert 20290], Nikolay Mishevskiy has reported 2.2
hours of DDE 48 photometry. The variable is showing superhump-like
variations with an amplitude about 0.2m (15.36-15.56V). The most
likely period is 0.067d.

According to October observations by Nikolay Mishevskiy, DDE 48 has a
very short ourtburst cycle (3-4 days). Thus, it can be a dwarf nova of
SU UMa or ER UMa type.

Details for the star were given in [vsnet-alert 20146]. ID and coordinates:

DDE 48 = GALEX J204611.8+242057 = USNO-B1.0 1143-0497954
20 46 11.80 +24 20 57.2
AAVSO VSX entry: https://www.aavso.org/vsx/index.php?view=detail.top&oid=473984

The object is in Vulpecula, so the evening visibility is shrinking.
Observations from other longitudes are requested, if possible, while
the star is in its first detected superoutburst.

Denis Denisenko (DDE)