You can see this datacron while questing on Taris up in a pipe, but you’ll need to find the secret path to getting to it elsewhere.
This datacron is the same location as the Republic-only Blue Mastery datacron, but you’ll do the jumping puzzle during the day time on that side.
Quick Travel / Taxi[HEROIC 2+] Blackout will put you really close to the start of this datacron.
Run all the way North
Go through the large red pipe, go up the trail
At the end of the pipe look left for a switchback trail leading up a hill
Get on the Ledge
Just past the switchback trail there will be a ledge on the right that you can jump up on to, and carefully follow the ledge for a long time along the edge of a ruined building.
The ledge will eventually lead you back to the top of the big red pipe and you can carefully jump onto the top of the red pipe.
Jump from the Big Red Pipe to the Small Metal Pipe
On the side of the big red pipe is a small, thin metal gray pipe you can very carefully jump down on to.
I like to jump towards it at an angle so if I go a little too far with my jump, I just land further up the pipe instead of jumping all the way over it.
Follow the grey pipe towards its end along the building.
Jump from the Metal Pipe, Down to the Ledge
At the end of the metal pipe, there will be nowhere else to go, so look down and there will be a very small ledge below. You will need to fall down onto it. You can make this fall easier by getting off your speeder, pressing the slash key above your number pad on your keyboard so you can walk, and just slowly walk forward off the metal pipe.
Follow the ledge around the building carefully. Once you see the hole where the datacron is going to be, with a red pipe inside it, you can fall down onto the large metal platform down below.
Jump Down to the Datacron
From there, carefully walk and fall your way down to the datacron in the red pipe!