
<DL><DT>
<B>
 Barycentric dynamical time (TDB)
</B><BR><BR>
<DD>
 1<BR>
</DL>
<DL><DT>
<B>
 Terrestrial dynamical time (TDT)
</B><BR><BR>
<DD>
 2<BR>
</DL>
   This assignment is optional; if absent, the parallel time system is
   assumed to be barycentric dynamical time.
<P>
 
<BR><BR>
<A NAME="SCLK type assignment"></A>
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<H3> SCLK type assignment
</H3><P><BR><BR>
   If --ss is the NAIF ID code of a spacecraft, this ID is associated with
   a SCLK t