The MAVEN navigation team executed maneuvers on Tuesday and Wednesday of this week that provided a total delta-V (∆V) of 4.0 m/sec. to the spacecraft and lowered the periapsis (lowest altitude) by a total of 24.5 km to 120.5 km above the Martian surface.
This Deep Dip campaign—the 6th of the mission to-date—is located in shadow near midnight on the red planet, and spans both sides of Mars’ equator. [More at link]