Marked locations on map are the areas from where you can spot MCR-99 Droids.
1. Droid PositionNorthern Dromund Kaas, The Imperial Citadel, the first speeder pad from right to left, look toward South East.
2. Droid PositionDark Temple Approach, at the top of a crane.
3. Droid PositionDark Temple Approach, at the top of the Temple.
4. Droid PositionSouthern Dromund Kaas, at the top of the Lord Grathan’s Estate.
5. Droid PositionRiverfall Wilds, at the middle of the big tower structure.
6. Droid PositionRiverfall Wilds, at the top of the waterfall.
Source: Official MCR-99 droid locations (hidden planetary achievements), MCR-99 Droid Locations post 2.0 on Swtor official Forums.
We would like to thank SWTOR community members for all additional information.