SS Cyg – Unusual Outburst

[Mr Ian David Sharp]

Hi all,

Just to say that SS Cyg is currently undergoing an unusual outburst showing a second peak. See attached.

This is not a photometry error as I can see supporting observation on the AAVSO curve.

Cheers
Ian.

Attachments:

1. 

   Screenshot-2026-11-10-100318.png
   

[Jeremy Shears]

Interesting result and well spotted, Ian. Definitely worth following up on.

There was a similar event in 2010 as in this 2016 MNRAS paper: https://academic.oup.com/mnras/article/460/4/3720/2609136

Another possible is mentioned in Robert Smith’s article in VSSC 157

There are quite a few examples in UGSU systems in which the rise to superoutburst is punctuated by a dip. It can look like a normal outburst superposed on the rise. Which is a bit like what you show here.

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