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The ecliptic latitude of Jupiter can be determined with the aid of Tables 50, 69, and 70. Table 50 allows
the mean argument of latitude, , of Jupiter to be calculated as a function of
time. Next, Table 69 permits the deferential latitude, , to
be determined as a function of the true argument of latitude, . Finally, Table 70 allows the quantities
, , and to be calculated as functions of the epicyclic
anomaly, . The procedure for using these tables is analogous to the previously described procedure for
using the Mars tables.
One example of this procedure is given below.
Example: May 5, 2005 CE, 00:00 UT:
From Cha. 8,
JD,
,
,
, and
.
Making use of
Table 50, we find:


(JD) 



+1000 

+900 

+50 

+.5 

Epoch 



Modulus 



Thus,
It follows from Table 69 that
Since
, Table 70 yields
so
Finally,
Thus,
the ecliptic latitude of Jupiter at 00:00 UT on May 5, 2005 CE was .
Next: Saturn
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Previous: Mars
Richard Fitzpatrick
20100721