ER Uma is close to the next superoutburst.

Home Forums Variable Stars ER Uma and RZ Lmi: Observations requested. ER Uma is close to the next superoutburst.

#583639
Stewart John Bean
Participant

Last night’s result from AAVSOnet gave a V Mag of 13.5. Er Uma has displayed a series of gradually more intense normal outbursts. It is now 40 days since the start of the last superoutburst.

With a supercycle length of around 45-50 days in the present epoch the next superoutburst may occur shortly. The graph below shows how the supercycle period has varied over the last 200 cycles  (27 years).

Previous superoutbursts have reached Mag 12.5.

Stewart