Did you ever take a challenge to write a poem on the "most impossible subject"?

Apsidal precession

Oh mark my words I never

Thought I'd come this way

My only chain and tether

Between the night and day

Was draw a line and find it

Or throw a chord about

My apsidal precession

Was surely not in doubt

I know your perturbation

A true anomaly

Can’t be the right rotation

And all in spite of me

And angling for your orbit

But I deviated much

You never knew I loved you

As you never felt my touch

Your periapsis argument

Your anomalistic year

The deviousness of your intent

That clever little sneer

Just tipped me off my lover

That you were not the one

I thought you were my true moon

But then you were the sun

You tried to change my apsis

You leaned upon my node

You juxtaposed your forces

And on my heart you rode

Hint: See http://answers.yahoo.com/question/index;_ylt=AtpfK... and http://en.wikipedia.org/wiki/Apsidal_precession