Do not go to the Published Co-ordinates, the Cache is not there.
This is my fourth attempt at a puzzle cache, but am confident that most will find this easy to solve.
To solve this puzzle you will need to identify the Season number that is associated with named episode, this will give you the number you need.
So the cache is at N51 AB. C (D - 4) E W000 FG. H (i - 3) (J + 1)
A = " Grey 17 is Missing"
B = "Babylon Squared"
C = "Objects in Motion"
D = "Rumours Bargains and Lies"
E = "The Coming of Shadows"
F = "Whatever Happened to Mr Garibaldi"
G = "TKO"
H = "The Corps is Mother, The Corps is Father"
i = "Sic Transit Vir"
J = "Sleeping in Light"