Fitting equation inside a column

I am using twocolumn revtex mode, and for my matrix to fit inside the column I used this 'trick'

$$\resizebox{1.\hsize}{!}{ \bordermatrix{~ & \tau & r & \theta & \varphi \cr & h_{\tau\tau}=\bigo(r^2) & h_{\tau\tau}=\bigo(r^2) & h_{\tau\tau}=\bigo(r^2) & h_{\tau\tau}=\bigo(r^2) &\cr & h_{\tau\tau}=\bigo(r^2) & h_{\tau\tau}=\bigo(r^2) & h_{\tau\tau}=\bigo(r^2) & h_{\tau\tau}=\bigo(r^2) & \cr & h_{\tau\tau}=\bigo(r^2) & h_{\tau\tau}=\bigo(r^2) & h_{\tau\tau}=\bigo(r^2) & h_{\tau\tau}=\bigo(r^2) \cr & h_{\tau\tau}=\bigo(r^2) & h_{\tau\tau}=\bigo(r^2) & h_{\tau\tau}=\bigo(r^2) & h_{\tau\tau}=\bigo(r^2) \cr}}$$


Which is fine, since this fits my matrix inside the column, but I don't like what it does to the numbering:

Is there a way to have one line of space between the matrix and the numbering? Or do I need to load some dreaded code inside for it to work? I looked at some examples here, but I would like a minimal code adjustment (like \resizebox for example)...

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I think this is the usual way to put an equation tag when there is no enough space. amsmath package has the \raisetag command to move the tag. By the way, all elements of the matrix are equal, is this a fake matrix or it is what you really want to typesset? – zunbeltz Jan 23 at 8:41
Fake matrix :D Don't worry XD So I could try with \raisetag... Is there a \lowertag command? :D – dingo_d Jan 23 at 9:22
@dingo_d -- as with many commands that accept values, \raisetag with a negative argument will do the opposite, namely lower the tag. – barbara beeton Jan 23 at 13:31
why have the first two rows got an extra & that is making the right hand bracket be misplaced? If you removed then and changed the scale to .8\textwidth the number would probably fit to the side – David Carlisle Jan 23 at 14:04
extra &? If I remove the & at the beginning I loose the matrix parenthesis... :\ – dingo_d Jan 23 at 15:37