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VLA Planetary Motion Page
This page will only be displayed if the "Planet/Solar motion?" item on the Initial
condition page page is set to "YES".
Reference IAT
Reference Time (IAT) for the motion of the planet, comet, or Sun.
This field defines the exact time at which the position entered on the
Source Page is valid. The motions entered on this Page are referred to
the Reference Time.
The time is entered as "hh mm ss". If left blank, it is written to the
OBSERVE file as such. The VLA on-line system will interpret a blank as
"00 00 00"; if the other parameters in this page are entered, then this
is probably erroneous.
Equatorial Horizontal Parallax
The Equatorial Horizontal Parallax for the planet, comet, or Sun in
arcseconds.
dRa/dt
The motion of the planet, comet, or Sun in Right Ascension measured in
seconds of RA per day. If left blank, it is written to the OBSERVE file
as such. The VLA on-line system will interpret a blank as "0" (zero).
dDec/dt
The motion of the planet, comet, or Sun in Declination measured in seconds
of Dec per day. If left blank, it is written to the OBSERVE file as such.
The VLA on-line system will interpret a blank as "0" (zero).