Format for the VLBI Observations



columns     1-2  Planet Number

           3-22  Date

          23-32  aldel [arcseconds]

          33-40  apriori sigma [arcseconds]

          41-48  theta [degrees]

A VLBI observation is a one-dimensional angular correction.

The position of the planet is observed to be displaced from the
base ephemeris (DE405) by the angle, "aldel", along a line which
makes an angle, "theta", measured counter-clockwise from the
right ascension axis.

I.e., for theta=0, aldel is the equivalent of an observation
in right ascension only; for theta=45, aldel is partioned
equally, sqrt(0.5) each,  into right ascension X cos(dec) and
into declination, with 100% correlation between the two.