coord-eq does not work

[bgottula]

The coord-eq target type does not work properly. I think this is perhaps because the _ra and _dec arguments to the ephem.FixedBody constructor do not work as expected. I think the attributes of the class need to be set directly, as strange as that sounds.

See:

• https://rhodesmill.org/pyephem/quick.html#bodies-with-orbital-elements
• brandon-rhodes/pyephem#88