Changes

The star is a semi-regular [[variable star]], meaning its intrinsic brightness varies slowly over time. Several periods have been observed including multiple periods of 820, 350, 510, and 645 days.<ref name=illinois/> These periods appear to themselves vary, meaning the star is quite unpredictable.

The star is a semi-regular [[variable star]], meaning its intrinsic brightness varies slowly over time. Several periods have been observed including multiple periods of 820, 350, 510, and 645 days.<ref name=illinois/> These periods appear to themselves vary, meaning the star is quite unpredictable.

The star is thought to be loosing mass at a rate of 10^-4 solar masses per year or equivalently, 33 earth masses.<ref name=Gorlova/> This is lost in a [[solar wind]] being projected from the star at a speed of 10&nbsp;km/s. However every 50 years, the star undergoes an "outburst" event in which up to 10,000 earth masses of material may be lost.<ref name=constellation-guide/> Such outbursts occured in the summer of 1946 and more recently in june-September 2000.<ref name=illinois/><ref>

The star is thought to be loosing mass at a rate of 10^-4 solar masses per year or equivalently, 33 earth masses.<ref name=Gorlova/> This is lost in a [[solar wind]] being projected from the star at a speed of 10&nbsp;km/s. However every 50 years, the star undergoes an "outburst" event in which up to 10,000 earth masses of material may be lost.<ref name=constellation-guide/> Such outbursts occurred in the summer of 1946 and more recently in June-September 2000.<ref name=illinois/><ref>

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  |last1=Lobel |first1=Alex