Quote:
Originally Posted by PeterM
Hi Liz,
"Ruby Crucis" coined by JANITA HILL from ASSA, Discovered to be variable by FRASER FARRELL ASSA in 1990, range 8.6-12 vmag.
Regards
PeterM.
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Discovered to be a variable in 1990 - goodness.
A site that Justin gave has the magnitudes over a period of time similiar to above ranges, but will have to become familiar with the Julian date calandar to get a rough time period.
Had alook at the graph for ESB
http://www.kusastro.kyoto-u.ac.jp/vs...vs2/CRUDY.html
and looks like it has about a 17month period ... which, extremely rough ..... had it peaking in mag ~ late 2009 so should be getting dimmer/redder until early 2011. That could all be totally wrong as not a mathematician/astronomer.