In a message dated 4/2/03, Craig Scull writes:
> You forgot to cite that part of my email where I said "I
> have little experience with double stars so please take
> this with a grain of salt (or pepper if you like)."
>
> http://lamar.colostate.edu/~rmoench/doubles.html
> http://my.voyager.net/~stargazer/double_stars.html
> cites Porrima at 3.6
A great resource for doubles is the binary star spreadsheet (Excel format)
available from Tom Polakis at http://www.psiaz.com/polakis/binaries.html
which includes 1721 binaries. This gives you accurate separations and
position angles as well as drawing an orbital diagram for *any* date. The
data uses the latest "Sixth Catalogue of Orbits of Visual Binary Stars" and
shows the current separation of Porrima (epoch 2003.25) at 0.82 arcseconds.
Steve Gottlieb